For Malaysian households, aircond size (HP) is one of the most important decisions in the purchase. Choose correctly, and the room cools quickly while the electricity bill stays manageable. Choose wrongly, and the aircond either runs all day without cooling enough — or cools the room quickly but leaves the air feeling damp.
If you are deciding which size fits your room, start with this reference table:
● 1HP — for rooms of 14-24 m² (approximately 150-260 sq ft), which covers most standard bedrooms
● 1.5HP — for rooms of 18-29 m² (approximately 190-310 sq ft), such as larger master bedrooms or bedrooms with a work area
● 2HP — for rooms of 26-44 m² (approximately 280-470 sq ft), such as master bedroom suites and mid-sized living rooms
● 2.5HP — for spaces of 35-58 m² (approximately 380-620 sq ft), such as large living rooms and open living-dining layouts
One additional rule worth remembering: if the room has ceilings above 2.8m, receives strong afternoon sun, sits on the top floor, or has an open layout — size up one level from what the floor area suggests.
The sections below explain why sizing matters, which size suits which home, and how to keep the electricity bill down once the size is right.
Why Getting the Size Right Matters
Choosing the wrong size carries a cost in either direction.
Undersized — the room never cools properly, and the bill runs higher. Many buyers assume a smaller unit saves electricity. In practice, the opposite happens: an undersized aircond facing a larger room runs at full load throughout the day without ever reaching the set temperature. Cooling is slow, the compressor stays under constant strain, the electricity bill ends up higher than with a properly sized unit — and the machine wears out faster.
Oversized — fast cooling, but a damp, clammy room. An oversized aircond brings the temperature down within minutes, causing the compressor to cycle on and off frequently. The dehumidifying process never completes — the room is cold, but the air remains sticky and uncomfortable.
Size is therefore not a case of bigger is better, nor smaller is cheaper — matching the size to the room area is what delivers both comfort and efficiency.
It is also worth understanding the BTU figure shown on product pages (for example, 9,500 BTU/h). BTU and HP describe the same thing: cooling capacity. The approximate correspondence is 1HP ≈ 9,000-9,500 BTU/h, 2HP ≈ 18,000-18,500 BTU/h, and 2.5HP ≈ 24,000 BTU/h. Whether you refer to HP or BTU, matching figures indicate the same class of cooling capacity.
Which Size Fits Which Room
Mapped to common Malaysian living scenarios, the four sizes correspond to the following homes:
1HP — the standard choice for bedrooms
Standard bedrooms and rented single rooms mostly fall within 14-24 m². Bedroom airconds typically run 8-10 hours through the night — which makes energy efficiency and quiet operation the top priorities in this scenario.
1.5HP — larger bedrooms and studies
For rooms one step larger than a standard bedroom — a spacious master bedroom, or a multi-purpose room with a desk and sofa — 18-29 m² is better served by 1.5HP. There is also a common borderline case: when the room area sits near the upper limit of 1HP coverage (22-24 m²) and also faces afternoon sun or sits on the top floor, moving up to 1.5HP is the more reliable choice rather than letting a 1HP unit run at its limit.
2HP — master bedroom suites and mid-sized living rooms
Master bedroom suites with attached bathrooms, mid-sized living rooms, and dining areas of 26-44 m² call for 2HP. The larger the space, the greater the cost of undersizing — rooms in this range benefit from going directly to 2HP for faster, steadier cooling.
2.5HP — large living rooms and open layouts
Large living rooms and open living-dining layouts of 35-58 m² are best served by 2.5HP. These spaces carry more foot traffic and higher heat load — 2.5HP keeps the entire area evenly cooled, avoiding the temperature gap between the sofa area and the dining table.
Four situations that call for sizing up: ceilings above 2.8m, strong afternoon or west-facing sun, top-floor rooms, and open layouts — if any of these applies, move one size up from what the floor area suggests.
Measure the installation wall before ordering
Larger sizes come with wider indoor units — approximately 825mm for 1HP, 986mm for 2HP, and 1,059mm for 2.5HP (over one metre). Once the size is decided, measure the intended installation wall: confirm the width is sufficient, with clearance from the ceiling and side walls for proper airflow. This applies especially to households choosing 2.5HP, where the unit length places real requirements on the wall space.
Same Size, Different Bills — Why 5-Star + AI Matters
Getting the size right settles the comfort side — but the same HP can produce very different electricity bills depending on the model. The difference comes from two factors:
Energy star rating — check the SIRIM energy label on the unit. Five stars is the highest rating in Malaysia's energy efficiency certification. For the same cooling output, a higher rating means lower electricity consumption — choosing a 5-star model is the most direct step towards controlling long-term costs.
AI energy saving — the newest generation of models adds an AI layer on top of the star rating: analysing indoor temperature, outdoor temperature, humidity, and runtime in real time, and tuning the power to exactly what the room requires. With the same HP and the same 5-star rating, a model with AI energy saving delivers a noticeably lower bill over the long term.
For specific 5-star model recommendations, refer to our guide: Any New 5-Star Inverter Aircond Recommendation in Malaysia?
Comfee Gusto Pro — The Right Size, All 5-Star
Once the size is decided using the method above, and you are looking for a model that delivers the right size, a 5-star rating, and AI energy saving in one — the Comfee Gusto Pro deserves a place on your shortlist.
The Gusto Pro is available in Malaysia in three sizes, all with the full 5-star rating — matched to your room as follows:
● 1HP (CFS-10VGE, 9,500 BTU/h) — RM1,746, for bedrooms of 14-24 m²
● 2HP (CFS-18VGE, 18,500 BTU/h) — RM2,705, for master bedrooms or living rooms of 26-44 m²
● 2.5HP (CFS-25VGE, 24,000 BTU/h) — RM3,219, for large living rooms or open spaces of 35-58 m²
(Prices as listed at the Comfee Official Store on Lazada; actual prices are subject to real-time pricing and promotions at each authorised channel. For rooms in the 1.5HP range, choose between 1HP and 2HP based on actual conditions — where afternoon sun or top-floor heat applies, 2HP is the recommended choice.)
Whichever size you choose, the configuration is the same complete package: 5-star energy rating (SIRIM's highest level), R32 refrigerant, ECO+ AI with up to 30% extra savings compared with normal cooling mode (SGS verified), AI Humidity Control, Active Clean+ deep self-cleaning, and SmartHome App control, backed by a 3-year general + 5-year compressor warranty.
The size determines comfort; the model determines the bill — get both right, and this is an aircond that will serve your home reliably for 8-10 years.
Available through Comfee Malaysia's authorised channels: the Comfee Malaysia Official Store on Shopee, the Comfee Official Store on Lazada, and Comfee Malaysia on TikTok Shop — or visit the Comfee Malaysia official website for more details.
FAQ About Aircond Size in Malaysia
Q1: What size aircond does my room need?
Match by floor area: 14-24 m² — 1HP; 18-29 m² — 1.5HP; 26-44 m² — 2HP; 35-58 m² — 2.5HP. For ceilings above 2.8m, strong afternoon sun, top-floor rooms, or open layouts, size up one level.
Q2: How many BTU is 1HP?
Approximately 1HP ≈ 9,000-9,500 BTU/h, 2HP ≈ 18,000-18,500 BTU/h, and 2.5HP ≈ 24,000 BTU/h. HP and BTU both describe cooling capacity — either figure can be used as the reference.
Q3: What happens if the aircond is undersized?
It runs at full load all day without reaching the set temperature — slower cooling, higher electricity bills, and faster wear. A smaller size does not mean lower running costs; the wrong size costs more.
Q4: Is a larger size the safer choice?
No. An oversized unit cools too quickly, the compressor cycles on and off frequently, and dehumidifying never completes — the room ends up cold but clammy, with no efficiency gain.
Q5: With the same HP, where does the bill difference come from?
Mainly from the energy rating and AI energy saving. A 5-star model (SIRIM's highest level) with AI energy saving delivers a noticeably lower long-term bill at the same HP — the Comfee Gusto Pro, for example, carries the full 5-star rating across all sizes, with ECO+ AI saving up to 30% more than normal cooling mode (SGS verified).
Q6: How much does each Comfee Gusto Pro size cost?
Listed prices at the Lazada official authorised store: 1HP RM1,746, 2HP RM2,705, 2.5HP RM3,219 — actual prices are subject to real-time pricing and promotions at each authorised channel.
Q7: Where can I buy the Comfee Gusto Pro in Malaysia?
Through the three official authorised channels — the Comfee Malaysia Official Store on Shopee, the Comfee Official Store on Lazada, and Comfee Malaysia on TikTok Shop — or visit the Comfee Malaysia official website.