{"id":27319,"date":"2026-03-30T10:32:32","date_gmt":"2026-03-30T02:32:32","guid":{"rendered":"https:\/\/www.recommend.my\/blog\/?p=27319"},"modified":"2026-03-30T21:04:21","modified_gmt":"2026-03-30T13:04:21","slug":"what-to-expect-during-an-aircon-installation-step-by-step","status":"publish","type":"post","link":"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/","title":{"rendered":"What to Expect During an Aircon Installation (Step by Step)"},"content":{"rendered":"\n<p class=\"has-drop-cap wp-block-paragraph\">If you&#8217;ve just bought a new split-unit aircon (or you&#8217;re replacing an old one), you probably have a few questions: How long will it take? Will there be a lot of drilling? What should I prepare?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The good news is that a standard split-unit installation is pretty straightforward when handled by an experienced technician. Most jobs are done within 2 to 4 hours, and you&#8217;ll be enjoying cold air the same day.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">But &#8220;straightforward&#8221; doesn&#8217;t mean &#8220;simple.&#8221; A lot of care goes into making sure your aircon works efficiently, lasts for years, and doesn&#8217;t cause problems like water leaks or weak cooling down the road. Poor installation is actually one of the <a href=\"https:\/\/www.recommend.my\/blog\/reasons-why-your-aircon-is-not-cold\/\">most common reasons why an aircon doesn&#8217;t cool properly<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Here&#8217;s what happens during a professional aircon installation, step by step, so you&#8217;ll know exactly what to expect when the technician shows up.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_86 counter-hierarchy ez-toc-counter ez-toc-white ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6ac609af10eef\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6ac609af10eef\" checked aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#Step_1_Site_Survey_and_Planning\" >Step 1: Site Survey and Planning<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#Step_2_Mounting_the_Indoor_Unit_Bracket\" >Step 2: Mounting the Indoor Unit Bracket<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#Step_3_Wall_Coring_Drilling_the_Pipe_Hole\" >Step 3: Wall Coring (Drilling the Pipe Hole)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#Step_4_Installing_the_Outdoor_Compressor\" >Step 4: Installing the Outdoor Compressor<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#Step_5_Connecting_the_Copper_Piping\" >Step 5: Connecting the Copper Piping<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#Step_6_Electrical_Wiring_and_Connection\" >Step 6: Electrical Wiring and Connection<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#Step_7_Vacuum_Testing\" >Step 7: Vacuum Testing<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#Step_8_Refrigerant_Charging_Gas_Release\" >Step 8: Refrigerant Charging (Gas Release)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#Step_9_Drainage_Setup\" >Step 9: Drainage Setup<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#Step_10_Testing_and_Commissioning\" >Step 10: Testing and Commissioning<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#How_Long_Does_Aircon_Installation_Take\" >How Long Does Aircon Installation Take?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#What_Should_You_Prepare_Before_Installation_Day\" >What Should You Prepare Before Installation Day?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#After_Installation_What_About_Maintenance\" >After Installation: What About Maintenance?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#How_Much_Does_Aircon_Installation_Cost_in_Malaysia\" >How Much Does Aircon Installation Cost in Malaysia?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#What_Customers_Are_Saying\" >What Customers Are Saying<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#Top-Rated_Aircon_Pros_in_KL_Selangor\" >Top-Rated Aircon Pros in KL &amp; Selangor<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#Ready_to_Book_Your_Aircon_Installation\" >Ready to Book Your Aircon Installation?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#FAQ\" >FAQ<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step_1_Site_Survey_and_Planning\"><\/span>Step 1: Site Survey and Planning<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Before anything gets mounted or drilled, a good installer will walk through your home and check a few things:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Where should the indoor unit go?<\/strong> The ideal spot is high on the wall (around 2.1 metres above the floor), away from direct sunlight, and positioned so air flows evenly across the room. They&#8217;ll also check whether the wall can support the weight of the unit.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Where will the outdoor compressor sit?<\/strong> It needs good ventilation, shade if possible, and enough clearance around it for airflow and future servicing. For condos, the installer will need to follow your building management&#8217;s rules on <a href=\"https:\/\/www.recommend.my\/blog\/delivery-of-vacant-possession-new-house-keys\/\">compressor placement<\/a> and use the designated aircon ledge or bracket points.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>What&#8217;s the piping route?<\/strong> The installer maps out the shortest, cleanest path for the copper piping and drainage hose between the indoor unit and the outdoor compressor. Shorter pipe runs are better for cooling performance and cost less.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Is the electrical supply ready?<\/strong> Your installer will check whether you have a dedicated power point for the aircon. Some older homes may need a new circuit or isolator switch installed first. If you have a <a href=\"https:\/\/www.recommend.my\/blog\/malaysia-house-3-phase-wiring\/\">3-phase wiring setup<\/a>, the technician will confirm which phase the unit should run on.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This planning stage is quick, usually around 15 to 20 minutes, but it&#8217;s one of the most important parts. Skipping it leads to problems later.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step_2_Mounting_the_Indoor_Unit_Bracket\"><\/span>Step 2: Mounting the Indoor Unit Bracket<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">With the plan confirmed, the technician installs a metal mounting plate (also called a back plate) on the wall. This plate is what the indoor unit hooks onto.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">They&#8217;ll use a spirit level to make sure the plate is perfectly horizontal. This matters more than you might think. If the indoor unit is tilted even slightly, water from condensation won&#8217;t drain properly and you could end up with <a href=\"https:\/\/www.recommend.my\/blog\/common-reasons-aircon-leaking\/\">aircon water leaks<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The bracket is secured with wall plugs and screws rated for the wall type (concrete, brick, or drywall). For concrete walls common in Malaysian condos and apartments, this means drilling into solid material for a secure hold.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step_3_Wall_Coring_Drilling_the_Pipe_Hole\"><\/span>Step 3: Wall Coring (Drilling the Pipe Hole)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"562\" src=\"https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/IMG_0036-1000x562.jpg\" alt=\"Above: Wall coring and mounting aircon back plate\" class=\"wp-image-27326\" style=\"box-shadow:var(--wp--preset--shadow--natural)\" srcset=\"https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/IMG_0036-1000x562.jpg 1000w, https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/IMG_0036-534x300.jpg 534w, https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/IMG_0036-218x122.jpg 218w, https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/IMG_0036.jpg 1200w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\"><em>Above: Wall coring and mounting aircon back plate<\/em><\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">This is usually the noisiest part of the job. The technician drills a hole through the exterior wall, typically around 65mm to 75mm in diameter, to create a passage for the copper piping, drainage hose, and electrical cable that connect the indoor unit to the outdoor compressor.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For standard brick or concrete walls, the installer uses a core drill with a diamond-tipped bit. This produces a clean, round hole without cracking the surrounding wall. The hole is drilled at a slight downward angle towards the outside, so that any condensation water naturally flows outward and doesn&#8217;t pool inside the wall.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>A few things to expect during wall coring:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>There will be dust and some debris, so lay down protective sheets.<\/li>\n\n\n\n<li>The drilling takes around 10 to 30 minutes depending on wall thickness.<\/li>\n\n\n\n<li>The technician should check for hidden electrical wiring or water pipes in the wall before drilling.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">After the piping is routed through, the hole is sealed with putty or polyurethane foam to prevent rain, insects, and warm air from getting in.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step_4_Installing_the_Outdoor_Compressor\"><\/span>Step 4: Installing the Outdoor Compressor<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"667\" src=\"https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/IMG_0101-1000x667.jpg\" alt=\"Above: Mounting outdoor aircon unit\" class=\"wp-image-27327\" style=\"box-shadow:var(--wp--preset--shadow--natural)\" srcset=\"https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/IMG_0101-1000x667.jpg 1000w, https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/IMG_0101-450x300.jpg 450w, https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/IMG_0101-218x145.jpg 218w, https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/IMG_0101-1536x1024.jpg 1536w, https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/IMG_0101-2048x1365.jpg 2048w, https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/IMG_0101-600x400.jpg 600w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\">Above: Mounting outdoor aircon unit<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The outdoor unit (compressor) is placed on a wall-mounted bracket or on the designated aircon ledge. The technician ensures the bracket is level, securely bolted, and can support the weight of the compressor.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A few placement principles matter here:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The compressor needs at least 30cm of clearance on all sides for proper airflow.<\/li>\n\n\n\n<li>It should be kept out of direct afternoon sun where possible, since heat exposure makes the compressor work harder and <a href=\"https:\/\/www.recommend.my\/blog\/aircon-electricity-cost-malaysia\/\">increases your electricity bill<\/a>.<\/li>\n\n\n\n<li>It should be accessible for future servicing. Technicians need to reach the unit for <a href=\"https:\/\/www.recommend.my\/blog\/how-often-do-you-really-need-to-service-your-aircon\/\">regular maintenance<\/a> like coil cleaning and gas top-ups.<\/li>\n\n\n\n<li>Proper drainage below the unit is also considered, since the outdoor unit releases water during humid conditions.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">For landed homes, the compressor is sometimes placed on a concrete pad on the ground. This works well as long as it&#8217;s elevated slightly to prevent flooding during heavy rain.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"490\" src=\"https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2025\/10\/aircon-install-1024x502-1-1000x490.jpg\" alt=\"\" class=\"wp-image-27121\" srcset=\"https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2025\/10\/aircon-install-1024x502-1-1000x490.jpg 1000w, https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2025\/10\/aircon-install-1024x502-1-612x300.jpg 612w, https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2025\/10\/aircon-install-1024x502-1-218x107.jpg 218w, https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2025\/10\/aircon-install-1024x502-1.jpg 1024w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step_5_Connecting_the_Copper_Piping\"><\/span>Step 5: Connecting the Copper Piping<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This is the step that connects your indoor unit to the outdoor compressor, and it&#8217;s where the quality of the installation really shows.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The technician runs insulated copper piping (usually 1\/4&#8243; and 3\/8&#8243; or 1\/4&#8243; and 1\/2&#8243; depending on your unit&#8217;s HP) between the two units. These pipes carry the refrigerant gas that makes your aircon cold.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Why copper piping quality matters:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pipes must be the correct diameter for your unit. Using the wrong size reduces cooling efficiency.<\/li>\n\n\n\n<li>Bends in the piping should be smooth and gradual. Kinks restrict refrigerant flow and make the compressor work harder.<\/li>\n\n\n\n<li>All joints, especially flare connections, must be tight and properly sealed. Loose connections are one of the most common causes of refrigerant leaks.<\/li>\n\n\n\n<li>The pipes are wrapped in insulation to prevent condensation from forming on the outside, which could cause water dripping along walls and ceilings.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Standard installations include around 5 to 10 feet of copper piping. If your indoor and outdoor units are far apart (say, the compressor is on the ground floor and the indoor unit is upstairs), additional piping will be needed, and this usually costs extra per foot.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For a neat finish, many installers use PVC trunking to cover the exposed piping along exterior walls. If you&#8217;d prefer a concealed look where piping runs inside the wall, this needs to be planned during renovation stage, before walls are plastered.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Did you know?<\/strong> There&#8217;s been research into using <a href=\"https:\/\/www.recommend.my\/blog\/using-aluminium-instead-of-copper-piping-could-drastically-reduce-aircon-installation-costs\/\">aluminium piping as a cheaper alternative to copper<\/a> for aircon installation. While it&#8217;s not yet mainstream in Malaysia, it&#8217;s worth knowing about.<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step_6_Electrical_Wiring_and_Connection\"><\/span>Step 6: Electrical Wiring and Connection<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The installer connects the electrical wiring between the indoor and outdoor units, and hooks everything up to your power supply.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This includes:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A communication cable between the indoor and outdoor unit (so they can &#8220;talk&#8221; to each other, especially important for inverter models).<\/li>\n\n\n\n<li>Power supply wiring to a dedicated circuit breaker or isolator switch.<\/li>\n\n\n\n<li>Proper grounding to protect the unit (and your home) from electrical faults and power surges.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">If your home doesn&#8217;t already have a dedicated circuit for the aircon, the technician may recommend adding one. Running an aircon on a shared circuit with other heavy appliances can <a href=\"https:\/\/www.recommend.my\/blog\/why-does-my-power-supply-trip-when-i-turn-on-my-aircond\/\">cause your power supply to trip<\/a>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"836\" height=\"214\" src=\"https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/Screenshot-2026-03-30-103024.png\" alt=\"aircon installer review recommend.my\n\" class=\"wp-image-27323\" srcset=\"https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/Screenshot-2026-03-30-103024.png 836w, https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/Screenshot-2026-03-30-103024-696x178.png 696w, https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/Screenshot-2026-03-30-103024-218x56.png 218w\" sizes=\"auto, (max-width: 836px) 100vw, 836px\" \/><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step_7_Vacuum_Testing\"><\/span>Step 7: Vacuum Testing<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This is one of the most critical steps in the entire installation, and it&#8217;s the one most commonly skipped by inexperienced installers.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">After the piping is connected but before the refrigerant is released, the technician connects a vacuum pump to the system and removes all the air and moisture from inside the copper pipes. This process is called evacuation, and it usually takes 15 to 30 minutes.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Why is vacuum testing so important?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Air and moisture trapped inside the refrigerant lines cause real problems:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Moisture reacts with refrigerant<\/strong> to form acids that corrode internal components, especially the compressor. This damage happens slowly, and the compressor may fail 1 to 2 years later, often just after the warranty expires.<\/li>\n\n\n\n<li><strong>Air in the system<\/strong> takes up space that should be filled with refrigerant, reducing your aircon&#8217;s cooling capacity and increasing energy consumption.<\/li>\n\n\n\n<li><strong>Moisture can freeze<\/strong> at the expansion valve, causing blockages that disrupt the entire cooling cycle.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">A proper vacuum test also serves as a leak check. After evacuating the system, the technician monitors the pressure gauge. If the vacuum holds steady for 15 to 20 minutes, the system is sealed. If the reading drops, there&#8217;s a leak that needs to be found and fixed before proceeding.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>How to tell if your installer did this step:<\/strong> Ask to see the vacuum pump and gauge being connected. A professional installer won&#8217;t mind showing you. If they skip this step or rush through it, that&#8217;s a red flag.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step_8_Refrigerant_Charging_Gas_Release\"><\/span>Step 8: Refrigerant Charging (Gas Release)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"667\" src=\"https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/IMG_0157-1000x667.jpg\" alt=\"Above: Checking aircon refrigerant pressure\" class=\"wp-image-27328\" style=\"box-shadow:var(--wp--preset--shadow--natural)\" srcset=\"https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/IMG_0157-1000x667.jpg 1000w, https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/IMG_0157-450x300.jpg 450w, https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/IMG_0157-218x145.jpg 218w, https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/IMG_0157-1536x1024.jpg 1536w, https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/IMG_0157-2048x1365.jpg 2048w, https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/IMG_0157-600x400.jpg 600w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\"><em>Above: Checking aircon refrigerant pressure<\/em><\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Once the vacuum test confirms the system is leak-free, the technician opens the service valves on the outdoor compressor to release the factory-charged refrigerant into the system.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Most new split units come pre-charged with enough refrigerant (R32 or R410A) for a standard pipe length (usually up to 5 to 7.5 metres). If your installation requires longer pipe runs, the technician will add extra refrigerant accordingly.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For replacement installations where the existing refrigerant is being reused or topped up, the technician measures pressure levels carefully to ensure the system is charged to the manufacturer&#8217;s specifications.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Good to know:<\/strong> Older aircon units may use R22 refrigerant, which is being phased out globally due to its ozone-depleting properties. If you&#8217;re replacing an old unit, your new aircon will likely use the more environmentally-friendly <a href=\"https:\/\/www.recommend.my\/blog\/the-gas-that-cooled-and-harmed-the-world-for-100-years\/\">R32 or R410A<\/a>.<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step_9_Drainage_Setup\"><\/span>Step 9: Drainage Setup<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The condensate drain line carries water away from the indoor unit. During cooling, moisture from the air condenses on the evaporator coil and collects in a drain tray. This water needs to flow out of the unit through the drain pipe.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The installer makes sure the drain line has a consistent downward slope towards the exit point (usually the nearest floor drain or exterior outlet). If the slope is even slightly wrong, water can pool inside the drain tray and eventually overflow, causing the <a href=\"https:\/\/www.recommend.my\/blog\/common-reasons-aircon-leaking\/\">aircon to leak water<\/a> inside your home.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For concealed installations (where the pipe runs through the wall or ceiling void), the technician may also install a condensate pump to push water upward to a drain point. This adds a small ongoing maintenance item, but it&#8217;s sometimes the only option in certain layouts.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step_10_Testing_and_Commissioning\"><\/span>Step 10: Testing and Commissioning<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">With everything connected, the technician powers on the unit and runs through a final checklist:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Cooling test:<\/strong> Is the aircon blowing cold air? They&#8217;ll check the temperature difference between the air going in and the air coming out. A healthy split unit should produce a 8\u00b0C to 12\u00b0C drop.<\/li>\n\n\n\n<li><strong>Airflow check:<\/strong> Is the air distributing evenly across the room?<\/li>\n\n\n\n<li><strong>Drainage check:<\/strong> Is condensate water flowing properly through the drain line?<\/li>\n\n\n\n<li><strong>Noise check:<\/strong> Are there any unusual rattling, buzzing, or vibrating sounds? A properly installed unit should run quietly. If it&#8217;s <a href=\"https:\/\/www.recommend.my\/blog\/aircon-noisy-how-to-identify-the-problem-and-when-to-call-a-pro\/\">making noise<\/a>, something may need adjustment.<\/li>\n\n\n\n<li><strong>Remote control setup:<\/strong> The technician will pair the remote, walk you through the basic settings, and show you how to use features like timer, sleep mode, and fan speed.<\/li>\n\n\n\n<li><strong>Leak inspection:<\/strong> A final visual check around all connections and joints for any signs of refrigerant or water leaks.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Once everything checks out, the installation is complete. The technician should leave you with documentation for both the product warranty and the installation workmanship warranty. Keep these safe.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_Long_Does_Aircon_Installation_Take\"><\/span>How Long Does Aircon Installation Take?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">For a single split-unit installation in a standard room, expect the job to take <strong>2 to 4 hours<\/strong>. Here&#8217;s a rough breakdown:<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><thead><tr><th>Stage<\/th><th>Estimated Time<\/th><\/tr><\/thead><tbody><tr><td>Site survey and planning<\/td><td>15 \u2013 20 min<\/td><\/tr><tr><td>Mounting indoor bracket<\/td><td>15 \u2013 20 min<\/td><\/tr><tr><td>Wall coring<\/td><td>10 \u2013 30 min<\/td><\/tr><tr><td>Mounting outdoor compressor<\/td><td>15 \u2013 30 min<\/td><\/tr><tr><td>Copper piping and insulation<\/td><td>30 \u2013 45 min<\/td><\/tr><tr><td>Electrical wiring<\/td><td>15 \u2013 20 min<\/td><\/tr><tr><td>Vacuum testing<\/td><td>15 \u2013 30 min<\/td><\/tr><tr><td>Gas release and testing<\/td><td>15 \u2013 20 min<\/td><\/tr><tr><td>Drainage setup and final checks<\/td><td>15 \u2013 20 min<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>What can make it take longer?<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Thick concrete walls (more time for wall coring)<\/li>\n\n\n\n<li>Long piping runs between indoor and outdoor units<\/li>\n\n\n\n<li>Difficult compressor placement (high floors, narrow ledges)<\/li>\n\n\n\n<li>Multiple units being installed on the same day<\/li>\n\n\n\n<li>Replacement jobs that include removing and disposing of the old unit<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">If you&#8217;re installing multiple units (say, 3 or 4 for a whole house), a professional team can typically complete the work within a full day.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Should_You_Prepare_Before_Installation_Day\"><\/span>What Should You Prepare Before Installation Day?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A little bit of preparation on your end helps the installation go smoothly:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Clear the area<\/strong> around where the indoor unit will be mounted. Move furniture, curtains, and anything fragile away from the wall.<\/li>\n\n\n\n<li><strong>Make sure there&#8217;s access<\/strong> to the outdoor compressor location. If it&#8217;s on a balcony or aircon ledge, clear any items blocking the way.<\/li>\n\n\n\n<li><strong>Confirm your electrical setup.<\/strong> If you know you&#8217;ll need a new circuit or power point, arrange for an electrician beforehand, or check if your aircon installer handles electrical work too.<\/li>\n\n\n\n<li><strong>Know your unit&#8217;s specifications.<\/strong> Have the brand, model, HP, and refrigerant type handy. If you bought the unit separately from the installer, have the receipt and warranty card ready.<\/li>\n\n\n\n<li><strong>Inform your condo management<\/strong> if you live in a high-rise. Some buildings require written approval before installation, and there may be specific rules about work hours and compressor placement.<\/li>\n\n\n\n<li><strong>Expect some noise and dust.<\/strong> Wall coring is loud. If you have young children, pets, or neighbours who might be sensitive, give them a heads up.<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"After_Installation_What_About_Maintenance\"><\/span>After Installation: What About Maintenance?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A properly installed aircon is easier and cheaper to maintain in the long run. When the indoor unit is mounted level, the drainage is set correctly, and the piping is well-sealed, your technician can service the unit efficiently every visit.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Most manufacturers recommend your first servicing after about 3 to 6 months of regular use, and then every 3 months after that for the best performance. Read our guide on <a href=\"https:\/\/www.recommend.my\/blog\/how-often-do-you-really-need-to-service-your-aircon\/\">how often you should service your aircon<\/a> for more details.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">When the time comes for your first service, you can book through Recommend.my for general cleaning, <a href=\"https:\/\/www.recommend.my\/blog\/aircon-chemical-wash-vs-normal-servicing\/\">chemical wash<\/a>, or a full overhaul. All servicing comes with a <a href=\"https:\/\/www.recommend.my\/blog\/guarantee\/\">30-day service warranty<\/a>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_Much_Does_Aircon_Installation_Cost_in_Malaysia\"><\/span>How Much Does Aircon Installation Cost in Malaysia?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Here are the current installation prices on Recommend.my. You can also try our <a href=\"https:\/\/www.recommend.my\/blog\/aircon-installation-price-calculator\/\">aircon installation price calculator<\/a> for a quick estimate.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Split Unit (Wall-Mounted) Aircon<\/h3>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><thead><tr><th>HP<\/th><th>Installation Price (per unit)<\/th><\/tr><\/thead><tbody><tr><td>1.0 HP<\/td><td>RM280<\/td><\/tr><tr><td>1.5 HP<\/td><td>RM320<\/td><\/tr><tr><td>2.0 HP<\/td><td>RM360<\/td><\/tr><tr><td>2.5 HP<\/td><td>RM400<\/td><\/tr><tr><td>3.0 HP<\/td><td>RM440<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Cassette (Ceiling) Unit Aircon<\/h3>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><thead><tr><th>HP<\/th><th>Installation Price (per unit)<\/th><\/tr><\/thead><tbody><tr><td>1.0 HP<\/td><td>RM450<\/td><\/tr><tr><td>1.5 HP<\/td><td>RM500<\/td><\/tr><tr><td>2.0 HP<\/td><td>RM550<\/td><\/tr><tr><td>2.5 HP<\/td><td>RM600<\/td><\/tr><tr><td>3.0 HP<\/td><td>RM650<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">What&#8217;s Included in the Price<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">All installation prices above include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Installation of indoor unit<\/li>\n\n\n\n<li>Installation of outdoor unit with bracket<\/li>\n\n\n\n<li>Up to 10 feet of copper piping with 3\/8&#8243; insulation<\/li>\n\n\n\n<li>Up to 10 feet of wiring<\/li>\n\n\n\n<li>Up to 10 feet of 1\/2&#8243; drain piping<\/li>\n\n\n\n<li>Gas top-up (R-22 or R-410A)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Additional Costs to Budget For<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">If your installation requires piping, wiring, or drain piping beyond the included 10 feet, here&#8217;s what the additional cost per foot looks like:<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><thead><tr><th>HP<\/th><th>Additional Piping\/Wiring Cost (per ft)<\/th><\/tr><\/thead><tbody><tr><td>1.0 HP<\/td><td>RM20<\/td><\/tr><tr><td>1.5 HP<\/td><td>RM24<\/td><\/tr><tr><td>2.0 HP<\/td><td>RM28<\/td><\/tr><tr><td>2.5 HP<\/td><td>RM30<\/td><\/tr><tr><td>3.0 HP<\/td><td>RM34<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Other add-ons:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Units that require <strong>R-32 gas<\/strong> top-up: add RM50 per unit<\/li>\n\n\n\n<li><strong>Dismantling of existing unit<\/strong> (for replacement jobs): add RM80 per unit<\/li>\n\n\n\n<li><strong>Aircon switch installation<\/strong> (includes surface wiring with casing up to 10 ft): RM120<\/li>\n\n\n\n<li><strong>Socket installation<\/strong> (includes surface wiring with casing up to 10 ft): RM70<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Note:<\/strong> Prices do not include power supply wiring, wall hacking, or concealed piping. These are typically handled during renovation and quoted separately. Not sure <a href=\"https:\/\/www.recommend.my\/blog\/what-hp-aircon-size-do-i-need-for-my-room-sizing-guide\/\">what HP you need for your room<\/a>? Check our sizing guide first.<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Customers_Are_Saying\"><\/span>What Customers Are Saying<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Here&#8217;s what recent customers had to say about their aircon service experience on Recommend.my:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Farah<\/strong> from Subang Jaya: &#8220;Very knowledgeable service men. Appreciate the advice on taking care of my aircond. Definitely recommended!&#8221; \u2014 Review for Aa Elite Expert Services, March 2026<\/p>\n<\/blockquote>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Parmeet Singh<\/strong> from KL Sentral: &#8220;Very fast and professional service.&#8221; \u2014 Review for Ridz Global Technology, March 2026<\/p>\n<\/blockquote>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Natalie<\/strong> from Bukit Jalil: &#8220;Fast in solving the problem! Responsive when arranging appointment.&#8221; \u2014 Review for Aircond Care Service, March 2026<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Top-Rated_Aircon_Pros_in_KL_Selangor\"><\/span>Top-Rated Aircon Pros in KL &amp; Selangor<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><thead><tr><th>Company<\/th><th>Rating<\/th><th>Customers Served<\/th><\/tr><\/thead><tbody><tr><td><a href=\"https:\/\/www.recommend.my\/businesses\/fly-force-sdn-bhd\">Fly FORCE SDN BHD<\/a><\/td><td>4.7 (237 reviews)<\/td><td>1,965<\/td><\/tr><tr><td><a href=\"https:\/\/www.recommend.my\/businesses\/aircon-k-service\">Aircon K Service<\/a><\/td><td>4.6 (298 reviews)<\/td><td>2,311<\/td><\/tr><tr><td><a href=\"https:\/\/www.recommend.my\/businesses\/ridz-global-technology\">RIDZ GLOBAL TECHNOLOGY<\/a><\/td><td>4.5 (44 reviews)<\/td><td>321<\/td><\/tr><tr><td><a href=\"https:\/\/www.recommend.my\/businesses\/sky-win-multi-enterprise\">Sky Win Multi Enterprise<\/a><\/td><td>4.7 (20 reviews)<\/td><td>144<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Looking for pros in other states? Browse our directory for <a href=\"https:\/\/www.recommend.my\/professionals\/air-con-maintenance-service\/johor\">Johor<\/a> or <a href=\"https:\/\/www.recommend.my\/professionals\/air-con-maintenance-service\/penang\">Penang<\/a>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Ready_to_Book_Your_Aircon_Installation\"><\/span>Ready to Book Your Aircon Installation?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Whether you&#8217;re installing a brand new unit or replacing an old one, Recommend.my connects you with verified, top-rated aircon technicians who do the job right the first time.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Trained, verified technicians with 4-star ratings and above<\/li>\n\n\n\n<li>Fast booking confirmation (within 1 hour)<\/li>\n\n\n\n<li>Transparent pricing with no hidden charges<\/li>\n\n\n\n<li>30-day service warranty<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/www.recommend.my\/service\/air-conditioning?utm_source=blog&amp;utm_medium=post&amp;utm_campaign=what-to-expect-during-an-aircon-installation-step-by-step\">BOOK AIRCON INSTALLATION<\/a><\/div>\n<\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"FAQ\"><\/span>FAQ<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1774837586520\"><strong class=\"schema-faq-question\">How long does a standard aircon installation take?<\/strong> <p class=\"schema-faq-answer\">A single wall-mounted split unit typically takes 2 to 4 hours. If you&#8217;re installing multiple units on the same day, or if the piping route is complex, it may take a full day.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1774837603297\"><strong class=\"schema-faq-question\">Can I install an aircon unit I bought from a different shop?<\/strong> <p class=\"schema-faq-answer\">Yes. Most professional installers on Recommend.my are happy to install units purchased elsewhere. Just share the brand, model, and HP beforehand so they can prepare the right materials.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1774837635591\"><strong class=\"schema-faq-question\">What is wall coring and will it damage my wall?<\/strong> <p class=\"schema-faq-answer\">Wall coring is the process of drilling a round hole through the wall to route piping between the indoor and outdoor units. Professional installers use a diamond core drill that cuts cleanly without cracking the surrounding wall. The hole is sealed after installation.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1774837649493\"><strong class=\"schema-faq-question\">Why is vacuum testing important during aircon installation?<\/strong> <p class=\"schema-faq-answer\">Vacuum testing removes air and moisture from the refrigerant lines. Moisture inside the system can react with refrigerant to form corrosive acids that damage the compressor over time. Air in the system also reduces cooling efficiency. Skipping this step is a common shortcut that leads to premature breakdowns.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1774837672089\"><strong class=\"schema-faq-question\">How do I know if my installer did a good job?<\/strong> <p class=\"schema-faq-answer\">A good installation should produce cold air with an 8\u201312\u00b0C temperature drop, have no water leaks within the first few days, run quietly, and include proper documentation (product warranty and workmanship warranty). The piping should be neatly routed and insulated, and the hole in the wall should be properly sealed.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1774837685636\"><strong class=\"schema-faq-question\"><strong>Do I need to service my new aircon right after installation?<\/strong><\/strong> <p class=\"schema-faq-answer\">Not immediately. Most manufacturers recommend your first servicing after about 3 to 6 months of regular use. After that, service every 3 months for the best performance. Read our guide on <a href=\"https:\/\/www.recommend.my\/blog\/how-often-do-you-really-need-to-service-your-aircon\/\">how often you should service your aircon<\/a> for more details.<\/p> <\/div> <\/div>\n","protected":false},"excerpt":{"rendered":"<p>If you&#8217;ve just bought a new split-unit aircon (or you&#8217;re replacing an old one), you probably have a few questions: How long will it take? Will there be a lot [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":27320,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","_lmt_disableupdate":"","_lmt_disable":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[244,665,734],"tags":[736,737,735],"class_list":["post-27319","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-air-conditioner","category-home-appliances","category-installation","tag-bracket","tag-mounting","tag-refrigerant"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What to Expect During an Aircon Installation (Step by Step) - Recommend.my<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What to Expect During an Aircon Installation (Step by Step) - Recommend.my\" \/>\n<meta property=\"og:description\" content=\"If you&#8217;ve just bought a new split-unit aircon (or you&#8217;re replacing an old one), you probably have a few questions: How long will it take? Will there be a lot [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/\" \/>\n<meta property=\"og:site_name\" content=\"Recommend.my\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/recommendmy\" \/>\n<meta property=\"article:published_time\" content=\"2026-03-30T02:32:32+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-30T13:04:21+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/recommendmy-aircon-install.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1376\" \/>\n\t<meta property=\"og:image:height\" content=\"768\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Alex Tan\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@recommendmy\" \/>\n<meta name=\"twitter:site\" content=\"@recommendmy\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Alex Tan\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"15 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/what-to-expect-during-an-aircon-installation-step-by-step\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/what-to-expect-during-an-aircon-installation-step-by-step\\\/\"},\"author\":{\"name\":\"Alex Tan\",\"@id\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/#\\\/schema\\\/person\\\/15d09be01048e3fba540342101b6283d\"},\"headline\":\"What to Expect During an Aircon Installation (Step by Step)\",\"datePublished\":\"2026-03-30T02:32:32+00:00\",\"dateModified\":\"2026-03-30T13:04:21+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/what-to-expect-during-an-aircon-installation-step-by-step\\\/\"},\"wordCount\":3097,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/what-to-expect-during-an-aircon-installation-step-by-step\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/recommendmy-aircon-install.jpg\",\"keywords\":[\"bracket\",\"mounting\",\"refrigerant\"],\"articleSection\":[\"Aircon Servicing and Repair\",\"Home Appliances\",\"Installation\"],\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.recommend.my\\\/blog\\\/what-to-expect-during-an-aircon-installation-step-by-step\\\/#respond\"]}]},{\"@type\":[\"WebPage\",\"FAQPage\"],\"@id\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/what-to-expect-during-an-aircon-installation-step-by-step\\\/\",\"url\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/what-to-expect-during-an-aircon-installation-step-by-step\\\/\",\"name\":\"What to Expect During an Aircon Installation (Step by Step) - Recommend.my\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/what-to-expect-during-an-aircon-installation-step-by-step\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/what-to-expect-during-an-aircon-installation-step-by-step\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/recommendmy-aircon-install.jpg\",\"datePublished\":\"2026-03-30T02:32:32+00:00\",\"dateModified\":\"2026-03-30T13:04:21+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/what-to-expect-during-an-aircon-installation-step-by-step\\\/#breadcrumb\"},\"mainEntity\":[{\"@id\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/what-to-expect-during-an-aircon-installation-step-by-step\\\/#faq-question-1774837586520\"},{\"@id\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/what-to-expect-during-an-aircon-installation-step-by-step\\\/#faq-question-1774837603297\"},{\"@id\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/what-to-expect-during-an-aircon-installation-step-by-step\\\/#faq-question-1774837635591\"},{\"@id\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/what-to-expect-during-an-aircon-installation-step-by-step\\\/#faq-question-1774837649493\"},{\"@id\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/what-to-expect-during-an-aircon-installation-step-by-step\\\/#faq-question-1774837672089\"},{\"@id\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/what-to-expect-during-an-aircon-installation-step-by-step\\\/#faq-question-1774837685636\"}],\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.recommend.my\\\/blog\\\/what-to-expect-during-an-aircon-installation-step-by-step\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/what-to-expect-during-an-aircon-installation-step-by-step\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/recommendmy-aircon-install.jpg\",\"contentUrl\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/recommendmy-aircon-install.jpg\",\"width\":1376,\"height\":768,\"caption\":\"recommendmy aircon install\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/what-to-expect-during-an-aircon-installation-step-by-step\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"What to Expect During an Aircon Installation (Step by Step)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/#website\",\"url\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/\",\"name\":\"Recommend.my\",\"description\":\"Malaysia&#039;s best home services platform\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-GB\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/#organization\",\"name\":\"Recommend.my\",\"url\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/wp-content\\\/uploads\\\/2019\\\/05\\\/e062ee55-e4e8-4cc5-95ad-fa7f6c15b72c_recommend-my-logo-800px.jpg\",\"contentUrl\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/wp-content\\\/uploads\\\/2019\\\/05\\\/e062ee55-e4e8-4cc5-95ad-fa7f6c15b72c_recommend-my-logo-800px.jpg\",\"width\":800,\"height\":165,\"caption\":\"Recommend.my\"},\"image\":{\"@id\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/recommendmy\",\"https:\\\/\\\/x.com\\\/recommendmy\",\"https:\\\/\\\/www.instagram.com\\\/recommendmy\",\"https:\\\/\\\/www.linkedin.com\\\/showcase\\\/recommend.my\\\/\",\"https:\\\/\\\/www.pinterest.com\\\/recommendmy\",\"https:\\\/\\\/www.youtube.com\\\/channel\\\/UC1mIYQBg8rjExSj2E_a1IuQ\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/#\\\/schema\\\/person\\\/15d09be01048e3fba540342101b6283d\",\"name\":\"Alex Tan\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/0a5ef0832520309202231eeb4a2347967b475024b27edc5826152b4ddaabf8f3?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/0a5ef0832520309202231eeb4a2347967b475024b27edc5826152b4ddaabf8f3?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/0a5ef0832520309202231eeb4a2347967b475024b27edc5826152b4ddaabf8f3?s=96&d=mm&r=g\",\"caption\":\"Alex Tan\"},\"description\":\"Alex is a content marketer, geek dad, and digital marketing specialist. As the co-founder of the Recommend Group, he drives digital, content marketing and SEO strategy as well as product development. Prior to Recommend, Alex was a software developer at a global consultancy, and a content director at a B2B agency for Fortune 500 tech clients.\",\"sameAs\":[\"https:\\\/\\\/www.recommend.my\"],\"url\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/author\\\/admin\\\/\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/what-to-expect-during-an-aircon-installation-step-by-step\\\/#faq-question-1774837586520\",\"position\":1,\"url\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/what-to-expect-during-an-aircon-installation-step-by-step\\\/#faq-question-1774837586520\",\"name\":\"How long does a standard aircon installation take?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A single wall-mounted split unit typically takes 2 to 4 hours. If you're installing multiple units on the same day, or if the piping route is complex, it may take a full day.\",\"inLanguage\":\"en-GB\"},\"inLanguage\":\"en-GB\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/what-to-expect-during-an-aircon-installation-step-by-step\\\/#faq-question-1774837603297\",\"position\":2,\"url\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/what-to-expect-during-an-aircon-installation-step-by-step\\\/#faq-question-1774837603297\",\"name\":\"Can I install an aircon unit I bought from a different shop?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. Most professional installers on Recommend.my are happy to install units purchased elsewhere. Just share the brand, model, and HP beforehand so they can prepare the right materials.\",\"inLanguage\":\"en-GB\"},\"inLanguage\":\"en-GB\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/what-to-expect-during-an-aircon-installation-step-by-step\\\/#faq-question-1774837635591\",\"position\":3,\"url\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/what-to-expect-during-an-aircon-installation-step-by-step\\\/#faq-question-1774837635591\",\"name\":\"What is wall coring and will it damage my wall?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Wall coring is the process of drilling a round hole through the wall to route piping between the indoor and outdoor units. Professional installers use a diamond core drill that cuts cleanly without cracking the surrounding wall. The hole is sealed after installation.\",\"inLanguage\":\"en-GB\"},\"inLanguage\":\"en-GB\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/what-to-expect-during-an-aircon-installation-step-by-step\\\/#faq-question-1774837649493\",\"position\":4,\"url\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/what-to-expect-during-an-aircon-installation-step-by-step\\\/#faq-question-1774837649493\",\"name\":\"Why is vacuum testing important during aircon installation?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Vacuum testing removes air and moisture from the refrigerant lines. Moisture inside the system can react with refrigerant to form corrosive acids that damage the compressor over time. Air in the system also reduces cooling efficiency. Skipping this step is a common shortcut that leads to premature breakdowns.\",\"inLanguage\":\"en-GB\"},\"inLanguage\":\"en-GB\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/what-to-expect-during-an-aircon-installation-step-by-step\\\/#faq-question-1774837672089\",\"position\":5,\"url\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/what-to-expect-during-an-aircon-installation-step-by-step\\\/#faq-question-1774837672089\",\"name\":\"How do I know if my installer did a good job?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A good installation should produce cold air with an 8\u201312\u00b0C temperature drop, have no water leaks within the first few days, run quietly, and include proper documentation (product warranty and workmanship warranty). The piping should be neatly routed and insulated, and the hole in the wall should be properly sealed.\",\"inLanguage\":\"en-GB\"},\"inLanguage\":\"en-GB\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/what-to-expect-during-an-aircon-installation-step-by-step\\\/#faq-question-1774837685636\",\"position\":6,\"url\":\"https:\\\/\\\/www.recommend.my\\\/blog\\\/what-to-expect-during-an-aircon-installation-step-by-step\\\/#faq-question-1774837685636\",\"name\":\"Do I need to service my new aircon right after installation?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Not immediately. Most manufacturers recommend your first servicing after about 3 to 6 months of regular use. After that, service every 3 months for the best performance. Read our guide on <a href=\\\"https:\\\/\\\/www.recommend.my\\\/blog\\\/how-often-do-you-really-need-to-service-your-aircon\\\/\\\">how often you should service your aircon<\\\/a> for more details.\",\"inLanguage\":\"en-GB\"},\"inLanguage\":\"en-GB\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"What to Expect During an Aircon Installation (Step by Step) - Recommend.my","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/","og_locale":"en_GB","og_type":"article","og_title":"What to Expect During an Aircon Installation (Step by Step) - Recommend.my","og_description":"If you&#8217;ve just bought a new split-unit aircon (or you&#8217;re replacing an old one), you probably have a few questions: How long will it take? Will there be a lot [&hellip;]","og_url":"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/","og_site_name":"Recommend.my","article_publisher":"https:\/\/www.facebook.com\/recommendmy","article_published_time":"2026-03-30T02:32:32+00:00","article_modified_time":"2026-03-30T13:04:21+00:00","og_image":[{"width":1376,"height":768,"url":"https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/recommendmy-aircon-install.jpg","type":"image\/jpeg"}],"author":"Alex Tan","twitter_card":"summary_large_image","twitter_creator":"@recommendmy","twitter_site":"@recommendmy","twitter_misc":{"Written by":"Alex Tan","Estimated reading time":"15 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#article","isPartOf":{"@id":"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/"},"author":{"name":"Alex Tan","@id":"https:\/\/www.recommend.my\/blog\/#\/schema\/person\/15d09be01048e3fba540342101b6283d"},"headline":"What to Expect During an Aircon Installation (Step by Step)","datePublished":"2026-03-30T02:32:32+00:00","dateModified":"2026-03-30T13:04:21+00:00","mainEntityOfPage":{"@id":"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/"},"wordCount":3097,"commentCount":0,"publisher":{"@id":"https:\/\/www.recommend.my\/blog\/#organization"},"image":{"@id":"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#primaryimage"},"thumbnailUrl":"https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/recommendmy-aircon-install.jpg","keywords":["bracket","mounting","refrigerant"],"articleSection":["Aircon Servicing and Repair","Home Appliances","Installation"],"inLanguage":"en-GB","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#respond"]}]},{"@type":["WebPage","FAQPage"],"@id":"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/","url":"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/","name":"What to Expect During an Aircon Installation (Step by Step) - Recommend.my","isPartOf":{"@id":"https:\/\/www.recommend.my\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#primaryimage"},"image":{"@id":"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#primaryimage"},"thumbnailUrl":"https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/recommendmy-aircon-install.jpg","datePublished":"2026-03-30T02:32:32+00:00","dateModified":"2026-03-30T13:04:21+00:00","breadcrumb":{"@id":"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#breadcrumb"},"mainEntity":[{"@id":"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#faq-question-1774837586520"},{"@id":"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#faq-question-1774837603297"},{"@id":"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#faq-question-1774837635591"},{"@id":"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#faq-question-1774837649493"},{"@id":"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#faq-question-1774837672089"},{"@id":"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#faq-question-1774837685636"}],"inLanguage":"en-GB","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/"]}]},{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#primaryimage","url":"https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/recommendmy-aircon-install.jpg","contentUrl":"https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/recommendmy-aircon-install.jpg","width":1376,"height":768,"caption":"recommendmy aircon install"},{"@type":"BreadcrumbList","@id":"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.recommend.my\/blog\/"},{"@type":"ListItem","position":2,"name":"What to Expect During an Aircon Installation (Step by Step)"}]},{"@type":"WebSite","@id":"https:\/\/www.recommend.my\/blog\/#website","url":"https:\/\/www.recommend.my\/blog\/","name":"Recommend.my","description":"Malaysia&#039;s best home services platform","publisher":{"@id":"https:\/\/www.recommend.my\/blog\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.recommend.my\/blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-GB"},{"@type":"Organization","@id":"https:\/\/www.recommend.my\/blog\/#organization","name":"Recommend.my","url":"https:\/\/www.recommend.my\/blog\/","logo":{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/www.recommend.my\/blog\/#\/schema\/logo\/image\/","url":"https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2019\/05\/e062ee55-e4e8-4cc5-95ad-fa7f6c15b72c_recommend-my-logo-800px.jpg","contentUrl":"https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2019\/05\/e062ee55-e4e8-4cc5-95ad-fa7f6c15b72c_recommend-my-logo-800px.jpg","width":800,"height":165,"caption":"Recommend.my"},"image":{"@id":"https:\/\/www.recommend.my\/blog\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/recommendmy","https:\/\/x.com\/recommendmy","https:\/\/www.instagram.com\/recommendmy","https:\/\/www.linkedin.com\/showcase\/recommend.my\/","https:\/\/www.pinterest.com\/recommendmy","https:\/\/www.youtube.com\/channel\/UC1mIYQBg8rjExSj2E_a1IuQ"]},{"@type":"Person","@id":"https:\/\/www.recommend.my\/blog\/#\/schema\/person\/15d09be01048e3fba540342101b6283d","name":"Alex Tan","image":{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/secure.gravatar.com\/avatar\/0a5ef0832520309202231eeb4a2347967b475024b27edc5826152b4ddaabf8f3?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/0a5ef0832520309202231eeb4a2347967b475024b27edc5826152b4ddaabf8f3?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/0a5ef0832520309202231eeb4a2347967b475024b27edc5826152b4ddaabf8f3?s=96&d=mm&r=g","caption":"Alex Tan"},"description":"Alex is a content marketer, geek dad, and digital marketing specialist. As the co-founder of the Recommend Group, he drives digital, content marketing and SEO strategy as well as product development. Prior to Recommend, Alex was a software developer at a global consultancy, and a content director at a B2B agency for Fortune 500 tech clients.","sameAs":["https:\/\/www.recommend.my"],"url":"https:\/\/www.recommend.my\/blog\/author\/admin\/"},{"@type":"Question","@id":"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#faq-question-1774837586520","position":1,"url":"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#faq-question-1774837586520","name":"How long does a standard aircon installation take?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"A single wall-mounted split unit typically takes 2 to 4 hours. If you're installing multiple units on the same day, or if the piping route is complex, it may take a full day.","inLanguage":"en-GB"},"inLanguage":"en-GB"},{"@type":"Question","@id":"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#faq-question-1774837603297","position":2,"url":"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#faq-question-1774837603297","name":"Can I install an aircon unit I bought from a different shop?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes. Most professional installers on Recommend.my are happy to install units purchased elsewhere. Just share the brand, model, and HP beforehand so they can prepare the right materials.","inLanguage":"en-GB"},"inLanguage":"en-GB"},{"@type":"Question","@id":"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#faq-question-1774837635591","position":3,"url":"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#faq-question-1774837635591","name":"What is wall coring and will it damage my wall?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Wall coring is the process of drilling a round hole through the wall to route piping between the indoor and outdoor units. Professional installers use a diamond core drill that cuts cleanly without cracking the surrounding wall. The hole is sealed after installation.","inLanguage":"en-GB"},"inLanguage":"en-GB"},{"@type":"Question","@id":"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#faq-question-1774837649493","position":4,"url":"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#faq-question-1774837649493","name":"Why is vacuum testing important during aircon installation?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Vacuum testing removes air and moisture from the refrigerant lines. Moisture inside the system can react with refrigerant to form corrosive acids that damage the compressor over time. Air in the system also reduces cooling efficiency. Skipping this step is a common shortcut that leads to premature breakdowns.","inLanguage":"en-GB"},"inLanguage":"en-GB"},{"@type":"Question","@id":"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#faq-question-1774837672089","position":5,"url":"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#faq-question-1774837672089","name":"How do I know if my installer did a good job?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"A good installation should produce cold air with an 8\u201312\u00b0C temperature drop, have no water leaks within the first few days, run quietly, and include proper documentation (product warranty and workmanship warranty). The piping should be neatly routed and insulated, and the hole in the wall should be properly sealed.","inLanguage":"en-GB"},"inLanguage":"en-GB"},{"@type":"Question","@id":"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#faq-question-1774837685636","position":6,"url":"https:\/\/www.recommend.my\/blog\/what-to-expect-during-an-aircon-installation-step-by-step\/#faq-question-1774837685636","name":"Do I need to service my new aircon right after installation?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Not immediately. Most manufacturers recommend your first servicing after about 3 to 6 months of regular use. After that, service every 3 months for the best performance. Read our guide on <a href=\"https:\/\/www.recommend.my\/blog\/how-often-do-you-really-need-to-service-your-aircon\/\">how often you should service your aircon<\/a> for more details.","inLanguage":"en-GB"},"inLanguage":"en-GB"}]}},"modified_by":"Alex Tan","featured_image_src":"https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/recommendmy-aircon-install-600x400.jpg","featured_image_src_square":"https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/recommendmy-aircon-install-600x600.jpg","author_info":{"display_name":"Alex Tan","author_link":"https:\/\/www.recommend.my\/blog\/author\/admin\/"},"uagb_featured_image_src":{"full":["https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/recommendmy-aircon-install.jpg",1376,768,false],"thumbnail":["https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/recommendmy-aircon-install-218x122.jpg",218,122,true],"medium":["https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/recommendmy-aircon-install-538x300.jpg",538,300,true],"medium_large":["https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/recommendmy-aircon-install.jpg",1376,768,false],"large":["https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/recommendmy-aircon-install-1000x558.jpg",1000,558,true],"1536x1536":["https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/recommendmy-aircon-install.jpg",1376,768,false],"2048x2048":["https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/recommendmy-aircon-install.jpg",1376,768,false],"gb-block-post-grid-landscape":["https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/recommendmy-aircon-install-600x400.jpg",600,400,true],"gb-block-post-grid-square":["https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/recommendmy-aircon-install-600x600.jpg",600,600,true],"gform-image-choice-sm":["https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/recommendmy-aircon-install.jpg",300,167,false],"gform-image-choice-md":["https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/recommendmy-aircon-install.jpg",400,223,false],"gform-image-choice-lg":["https:\/\/www.recommend.my\/blog\/wp-content\/uploads\/2026\/03\/recommendmy-aircon-install.jpg",600,335,false]},"uagb_author_info":{"display_name":"Alex Tan","author_link":"https:\/\/www.recommend.my\/blog\/author\/admin\/"},"uagb_comment_info":1,"uagb_excerpt":"If you&#8217;ve just bought a new split-unit aircon (or you&#8217;re replacing an old one), you probably have a few questions: How long will it take? Will there be a lot [&hellip;]","_links":{"self":[{"href":"https:\/\/www.recommend.my\/blog\/wp-json\/wp\/v2\/posts\/27319","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.recommend.my\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.recommend.my\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.recommend.my\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.recommend.my\/blog\/wp-json\/wp\/v2\/comments?post=27319"}],"version-history":[{"count":1,"href":"https:\/\/www.recommend.my\/blog\/wp-json\/wp\/v2\/posts\/27319\/revisions"}],"predecessor-version":[{"id":27329,"href":"https:\/\/www.recommend.my\/blog\/wp-json\/wp\/v2\/posts\/27319\/revisions\/27329"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.recommend.my\/blog\/wp-json\/wp\/v2\/media\/27320"}],"wp:attachment":[{"href":"https:\/\/www.recommend.my\/blog\/wp-json\/wp\/v2\/media?parent=27319"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.recommend.my\/blog\/wp-json\/wp\/v2\/categories?post=27319"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.recommend.my\/blog\/wp-json\/wp\/v2\/tags?post=27319"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}