Aiman is standing in front of the aircon wall at Senheng. He’s been there for 15 minutes. The salesperson is telling him the Daikin SMARTO Premium is a 5-star inverter, and the Midea Xtreme on the next shelf is “good enough lah, 3-star, non-inverter.”
The price difference is RM1,200.
He nods, smiles politely, and asks the question almost every Malaysian buyer asks at this exact moment: “OK, but… what does 5-star actually mean?”
Most of us know the yellow sticker exists. Most of us know more stars is “better”. Most of us have no idea how to translate that into ringgit on next month’s TNB bill.
This guide unpacks the Malaysia aircon energy label section by section, explains what CSPF is and why it matters, shows you how much each star rating actually saves you in a year, and walks through whether paying more for 5-star pays back for your usage pattern.
TLDR: The yellow energy label on Malaysian aircons is issued by Suruhanjaya Tenaga (the Energy Commission) under the MEPS scheme. The star rating runs from 1 to 5, where 5 stars is the most efficient. A 5-star 1HP aircon typically uses 40% to 50% less electricity than a 1-star unit of the same size, which works out to roughly RM150 to RM250 in annual savings for a bedroom running 8 hours a night.
Table of Contents
What is the Malaysia aircon energy label?
The yellow sticker on the side of every new aircon sold in Malaysia is the official Energy Efficiency Label, issued by Suruhanjaya Tenaga (the Energy Commission). It’s part of a scheme called MEPS — Minimum Energy Performance Standards.
The idea is simple. Aircon manufacturers send their units to be tested in accredited labs. ST then rates each model from 1 to 5 stars based on how efficiently it cools relative to the electricity it consumes. The label is mandatory for every residential air conditioner sold in Malaysia with a cooling capacity of 7.1 kW or less, which covers basically every domestic split unit from 1HP up to 2.5HP.
Before the EECA came in, the scheme ran under the older Guidelines on Energy-Using Product. From 1 January 2025, the new Energy Efficiency and Conservation Act (EECA) took over. Manufacturers now need a Certificate of Efficiency (COE) to sell any new aircon model in Malaysia. The star bar also got higher in 2026, which we’ll cover later.
Without the sticker (or with a sticker that doesn’t match the ST product registration database), the unit is technically not allowed to be sold here. So if you ever see a brand-new aircon at a “too good to be true” price with no yellow label or a label that looks photocopied, walk away.
What each part of the energy label tells you
If you’ve never actually looked at one closely, here’s what the yellow sticker is telling you.
Star rating (1 to 5). This is the headline figure. More stars equals more efficient. A 5-star unit is the most efficient class on sale; a 2-star unit is the legal minimum allowed in Malaysia today. (You used to see 1-star units, but those are no longer compliant with the 2026 MEPS update.)
CSPF value (Wh/Wh). This is the actual efficiency number behind the stars. CSPF stands for Cooling Seasonal Performance Factor. The higher the number, the more cooling the unit delivers per watt of electricity it consumes. As of the 2026 update, a 2-star unit needs at least CSPF 4.1 Wh/Wh (for units below 4.5 kW cooling capacity), while a 5-star unit needs a substantially higher CSPF. The exact thresholds rise gradually toward 2030.
Annual energy consumption (kWh/year). This is the most useful number for budgeting. It’s an estimate of how much electricity the unit will use over a year of typical operation. Multiply it by your effective TNB tariff (about 44 sen/kWh for most Malaysian households on the current restructured tariff) and you get your annual running cost. We’ll work through actual numbers in the next sections.
Cooling capacity (kW). This is the size of the unit, expressed in kilowatts. Roughly: 1 HP ≈ 0.75 kW cooling, 1.5 HP ≈ 1.1 kW, 2 HP ≈ 1.5 kW. For more on matching cooling capacity to room size, see our HP sizing guide for Malaysian rooms.
Brand and model number. Use this to cross-check the unit against the ST product database. If the model number on the box doesn’t match the label, that’s a red flag.
ST approval number. A unique reference issued by Suruhanjaya Tenaga when the model passes its efficiency test. You can search this number to verify the unit is genuinely registered.
What does CSPF mean (and why is it different from EER)?
A lot of older aircon brochures still quote EER (Energy Efficiency Ratio). You may also see SEER in imported brochures, especially from US-based brands. Malaysia officially uses CSPF.
The difference matters, especially if you’re buying an inverter aircon.
| Rating | What it measures | Why it matters |
|---|---|---|
| EER | Efficiency at one fixed operating condition (a single temperature, full load) | Easy to test, but doesn’t reflect real-world usage where the aircon runs at varying loads |
| SEER | Efficiency averaged across a cooling season (US climate model) | More realistic than EER, but based on US summer profiles, not Malaysian year-round use |
| CSPF | Efficiency averaged across the full cooling season as defined by ASEAN/Malaysian conditions | Designed specifically for tropical climates with year-round aircon use, and it captures the part-load efficiency of inverter units |
In a non-inverter aircon, the compressor only runs at full speed when it’s on. EER and CSPF give similar readings for these units. In an inverter aircon, the compressor throttles up and down based on how much cooling the room currently needs. CSPF rewards that throttling behaviour because part-load operation is genuinely more efficient.
So if a sales brochure quotes a high EER but a lower CSPF, the inverter savings you’re being promised may not materialise in real-world use. The number printed on the ST sticker is what you should trust.
How much electricity does each star rating actually use?
Here are typical annual energy consumption figures you’ll see on the labels of 1HP and 1.5HP split aircons sold in Malaysia today. Actual figures vary by model, so always check the label on the specific unit you’re considering.
| Star Rating | 1HP (approx. annual kWh) | 1.5HP (approx. annual kWh) |
|---|---|---|
| 1-star (legacy units only) | ~1,200 kWh/year | ~1,700 kWh/year |
| 2-star | ~950 kWh/year | ~1,400 kWh/year |
| 3-star | ~750 kWh/year | ~1,100 kWh/year |
| 4-star | ~650 kWh/year | ~950 kWh/year |
| 5-star | ~550 kWh/year | ~800 kWh/year |
Figures are illustrative averages across popular Malaysian brands and assume the ST standard usage profile. Always confirm against the specific unit’s energy label.
The pattern is consistent across HP sizes: moving from 1-star to 5-star roughly halves the annual electricity consumption for the same cooling output.
How much does each star rating cost on your TNB bill?
Now we translate those kWh figures into ringgit, using the current effective TNB residential rate of about 44 sen/kWh. (For the full breakdown of how TNB charges you in 2026, see our TNB tariff guide for aircon users.)
| Star Rating | 1HP Annual Cost | 1.5HP Annual Cost |
|---|---|---|
| 1-star | ~RM528 | ~RM748 |
| 2-star | ~RM418 | ~RM616 |
| 3-star | ~RM330 | ~RM484 |
| 4-star | ~RM286 | ~RM418 |
| 5-star | ~RM242 | ~RM352 |
Calculation: annual kWh × RM0.44 per kWh.
So for a 1.5HP bedroom aircon running typical Malaysian hours, the difference between a 3-star and a 5-star unit is about RM132 per year. Over a 10-year aircon lifespan, that’s RM1,320 saved on electricity. The gap is even bigger if you’re comparing against an older 1-star unit still sitting in your spare bedroom from 2014.
If you run multiple aircons or run them more than 8 hours a day, the savings stack up faster. Three 1.5HP units running 10 hours a day on 5-star instead of 3-star saves you closer to RM500 a year.
How much more does a 5-star aircon cost to buy?
Here’s the honest part. The 5-star premium is real. Whether it pays back depends on how much you use the unit.
One thing to clear up first: in Malaysia, the star rating and the compressor type are linked. According to the U4E Malaysia Air Conditioner Market Assessment, inverter compressors dominate the 4-star and 5-star categories, while 2-star and 3-star units are overwhelmingly non-inverter. A small number of 3-star inverter units do exist (the Daikin FTKE 1.0HP is one), but they’re the exception. So the realistic comparison at the Senheng wall is between a non-inverter 3-star, an inverter 4-star, and an inverter 5-star.
Based on rough retail pricing:
| Aircon Size | 3-star Non-Inverter | 4-star Inverter | 5-star Inverter |
|---|---|---|---|
| 1HP | ~RM ~900–1,200 | ~RM1,500–1,900 | ~RM2,000–2,500 |
| 1.5HP | ~RM1,200–1,500 | ~RM1,900–2,300 | ~RM2,400–2,900 |
| 2HP | ~RM1,800–2,200 | ~RM2,700–3,100 | ~RM3,100–3,600 |
Payback example for a 1.5HP unit, used 8 hours a night, comparing 3-star non-inverter against 5-star inverter:
- 3-star non-inverter annual running cost: ~RM484
- 5-star inverter annual running cost: ~RM352
- Annual electricity saving: ~RM132
- Price premium of 5-star inverter over 3-star non-inverter: ~RM1,300
- Payback period: ~10 years
Hmm. On those numbers, the 5-star pays back right at the edge of the unit’s useful life — not the slam-dunk that the brochure language suggests. But two things tilt the maths in favour of the 5-star inverter in real-world use:
- Inverter units run more efficiently at part load. The figures above use the rated kWh from the energy label. In actual operation, a 1.5HP inverter at 25°C in a stable bedroom can draw closer to 800–900W average, well below its rated maximum. That widens the gap further.
- Heavier usage compresses the payback dramatically. If you run the aircon 10 to 12 hours a day (working from home + sleeping with it on), the payback drops to 6–7 years.
Quick rule of thumb:
- Master bedroom, daily use, 8+ hours a night → 5-star inverter pays back, worth it
- Living room, evenings only, 3–4 hours a day → 4-star inverter is the sweet spot
- Guest room, used a few times a month → 3-star non-inverter is fine, save the upfront cost
Three common myths about aircon energy ratings
Myth 1: All inverter aircons are 5-star.
Not quite — though it’s a closer relationship in Malaysia than you might think. According to the U4E Malaysia market study, inverter compressors dominate the 4-star and 5-star ratings, while 2-star and 3-star units are almost entirely non-inverter (only about 1% of 3-star units use an inverter). So if a salesperson tells you a 3-star unit is “also an inverter, same like the 5-star”, check the spec sheet — it’s rare, and the model lineup is small. Most 3-star units you’ll see are fixed-speed compressors. Read more in our breakdown of whether you should buy an inverter aircon.
Myth 2: Buying a 5-star aircon will lower my whole TNB bill.
Only partially. Your aircon is one part of your bill. If you’re already using over 1,500 kWh a month, the more important move is to keep total household usage below the threshold where TNB’s Insentif Cekap Tenaga rebate (Energy Efficiency Incentive) kicks in. Combine a 5-star aircon with the 10 other electricity-saving habits we’ve covered for the real impact.
Myth 3: Older aircons in my house still have a valid energy rating.
The rating on a 10-year-old unit was correct when it was sold, but the unit has lost efficiency over time. Dirty coils, worn compressors, and refrigerant leaks all degrade real-world performance. A 5-star aircon from 2014 may now perform closer to a 2-star. A proper chemical wash or overhaul can recover some of that performance, but eventually it makes more sense to replace the unit.
How to check a unit’s rating before you buy
Three steps before you pay.
1. Read the actual label, not the salesperson. The yellow sticker on the side of the unit (and printed in the brochure) should clearly show the star rating, the CSPF value, and the annual kWh figure. If the salesperson is quoting a different number than what’s on the label, trust the label.
2. Verify the model on the ST product database. Suruhanjaya Tenaga maintains a registration database of all approved models. Search the brand and model number to confirm the rating is genuine. Counterfeit or grey-import stickers do happen, especially on imported portable units sold online.
3. Look at annual kWh, not just the stars. Two 5-star units from different brands can have different annual kWh figures. For two units in the same size class, the lower kWh figure is the more efficient one. A 5-star at 540 kWh/year is better than a 5-star at 590 kWh/year, even though both wear the same number of stars.
What changed in the 2026 MEPS update
If you bought an aircon before 2026, the energy label might look slightly different to what you see in stores today. That’s because the new star rating schedule took effect on 1 January 2026 and will run until 31 December 2029.
What changed:
- The 1-star tier is effectively gone. From 2026 onward, the minimum CSPF for a 2-star rating is 4.1 Wh/Wh (for units under 4.5 kW capacity) and 4.0 Wh/Wh (for 4.5–7.1 kW units). Older 1-star units can no longer be sold new.
- The 5-star bar is higher too. What was a comfortable 5-star unit in 2024 may now be rated 3 or 4 stars under the new test. The numbers on the sticker should be your guide, not the older marketing materials.
- By 2030, the threshold rises further. ST has signalled that the minimum 2-star CSPF will rise to 6.09 Wh/Wh, and 5-star will rise to 7.5 Wh/Wh for smaller units. So manufacturers are gradually pushed toward higher efficiency over the decade.
The practical implication for buyers: a 5-star unit you buy in 2026 is genuinely more efficient than a 5-star unit from 2022. If you’re replacing an old aircon, the floor has moved up — even a 3-star unit today is meaningfully more efficient than a 3-star unit from a decade ago.
Top-rated aircon installers in KL and Selangor
When you’ve picked the right unit, getting it installed properly matters as much as the star rating itself. A poorly installed 5-star aircon (wrong placement, too-long piping, undersized power supply) can perform worse than a well-installed 3-star one.
Below are highly-rated aircon installers on Recommend.my serving Kuala Lumpur and Selangor as of 2026:
| Pro | Rating | Customers Served | Specialisation |
|---|---|---|---|
| Fly FORCE Sdn Bhd | 4.6 (254 reviews) | 2,105 | Installation, servicing, electrical |
| Mr Fix Home Appliance Services | 4.8 (132 reviews) | 1,390 | Installation, aircon repair, appliance repair |
| Aircon K Service | 4.6 (298 reviews) | 2,322 | Installation, chemical wash, repair |
| AMH Services | 4.9 (95 reviews) | 539 | Aircon installation, electrical |
| Adept Service Enterprise | 4.4 (113 reviews) | 1,161 | Aircon installation and servicing |
Rankings update monthly. See the full list of aircon installers in KL and Selangor for current ratings.
What customers say about Recommend.my aircon installers
Daryl, Selangor — “He explains quite detailed on what he is going to do and bring most of the equipment. He only ask for water for service. The service man also ask which aircons has issues so he can troubleshoot.” Review for NR Protech Aircond Service & Electrical, May 2026
Patrick, Selangor — “Fast respond, on time and good recommendation and services.” Review for Mr Fix Home Appliance Services, May 2026
Ahmad Danish Aqil bin, Selangor — “They were quick and efficient. Responsive as well. Servicing went without any problems.” Review for Adept Service Enterprise, May 2026
Before you book: a quick checklist
Before you walk into an aircon showroom or click “buy now” on a shopping website, run through this:
✅ Measured the room and worked out the right HP using our aircon sizing guide
✅ Checked the yellow energy label on the actual unit (or in the official brochure), not just the salesperson’s word
✅ Compared the annual kWh figure between models, not just the star count
✅ Estimated your annual running cost (annual kWh × 44 sen) and decided whether the 5-star premium pays back for your usage
✅ Verified the model and ST approval number on the Suruhanjaya Tenaga product database
✅ Lined up an installer who will do the job properly — wrong placement undoes the efficiency gain
Book an aircon installer on Recommend.my
A new aircon is one of the bigger home appliance purchases most Malaysians make. Once you’ve picked the right energy-rated unit, the next step is getting it installed by someone who knows what they’re doing.
Book through Recommend.my for:
✅ Verified installers with 4-star average rating or higher
✅ Transparent pricing — no surprise charges on the day
✅ 30-day service guarantee on every installation
✅ 1-hour booking confirmation in Klang Valley
✅ Insurance protection on every job paid through Recommend Pay
Find an aircon installer near you →
For more on what the actual installation involves, read our walkthrough of what to expect during an aircon installation, step by step. If you live in a condo, also check our condo aircon installation rules and tips before you pay.
FAQ
What does 5-star mean on a Malaysian aircon?
5-star is the highest energy efficiency rating issued by Suruhanjaya Tenaga under the MEPS scheme. A 5-star aircon delivers the most cooling per watt of electricity used, and typically consumes about half as much electricity as a 1-star unit of the same size. The exact CSPF (Cooling Seasonal Performance Factor) threshold for 5-star varies by cooling capacity and is set to rise gradually toward 2030.
Is it always worth paying more for a 5-star aircon?
Not always. For a master bedroom you’ll run 8 hours a night for the next 10 years, a 5-star pays back in about 5 years and keeps saving after that. For a guest room used a few times a month, the upfront premium of RM500 to RM800 may never pay back. Match the rating to how often you actually use the unit.
What’s the difference between CSPF and EER on an aircon label?
EER measures efficiency at one fixed operating condition (full load, one temperature), while CSPF measures efficiency averaged across the full cooling season including part-load operation. CSPF is more accurate for inverter aircons because it captures the savings from the compressor throttling down once the room is cool. Malaysia officially uses CSPF on the yellow energy label.
How can I check if an aircon’s energy rating is genuine?
Look up the brand and model number on the Suruhanjaya Tenaga product registration database. The model on the box should match the model on the energy label, and both should match the ST database entry. The approval number on the label is also unique to each model — you can verify it through ST directly.
Do older aircons keep their energy rating over time?
Not really. The rating reflects how the unit performed when it was tested as a new unit. Real-world efficiency drops over the years as coils get dirty, refrigerant levels fall, and components wear. A regular chemical wash recovers some of that lost efficiency. After about 10 to 12 years, even with good servicing, the unit usually performs well below its original rating.
Will a 5-star aircon lower my whole TNB bill significantly?
It helps, but it’s not magic. A 5-star 1.5HP unit running 8 hours a night saves roughly RM132 a year compared to a 3-star unit. To meaningfully lower your TNB bill, combine a high-rated aircon with smart usage habits — setting the temperature to 24–25°C, using a fan to circulate air, servicing the unit regularly, and watching your total household consumption against the Insentif Cekap Tenaga rebate thresholds.
What changed in the Malaysia MEPS rules in 2026?
From 1 January 2026, the star rating schedule was updated. The minimum CSPF for a 2-star rating is now 4.1 Wh/Wh for units under 4.5 kW capacity (and 4.0 Wh/Wh for 4.5–7.1 kW units). Older 1-star units can no longer be sold new. The 5-star bar also moved up, so a 5-star unit bought today is more efficient than a 5-star unit from 2022. Manufacturers also now need a Certificate of Efficiency (COE) under the new EECA Act.
