0.6HP Aircons That Use the Least Electricity, Ranked by CSPF

The 0.6HP aircon that gives the most cooling per kWh, among the models we could verify, is the Fujidenzo WAR-632IGT2 (CSPF 3.35, 513 W). The Kelvinator WKELA006EA-TF is a hair behind on CSPF (3.32) but draws the fewest watts of any 0.6HP unit we checked (468 W). All verified 0.6HP models are fixed-speed window units, so their efficiency is close; the bigger saving comes from stepping up to a small inverter.

How we ranked them

We ranked by CSPF first, then by rated power input (watts). CSPF (Cooling Seasonal Performance Factor) is the “Energy Efficiency Rating” number on the Philippine DOE energy label: the heat removed over a standard cooling season divided by the electricity used. Higher CSPF means more cooling for each kWh you pay for.

We only included models whose rated watts and CSPF (or EER) come from a DOE energy label or the manufacturer. Prices are not listed because they change daily — check today’s price on the listing.

0.6HP window aircons ranked

*Fujidenzo publishes the 513 W figure; the CSPF and star rating come from retailer Western Appliances. The Astron entry is ranked last because Astron publishes an EER but no CSPF.

What the numbers mean for your bill

The CSPF gap is small. Between 3.20 and 3.35, the four units are close. For fixed-speed aircons of this size, your monthly cost depends more on watts and hours than on which brand you pick.

Lowest watts is not the whole story. The Kelvinator uses 468 W, but its rated capacity is also the lowest at 1.47 kW. In a warm room it may run longer to reach your set temperature. If your room gets afternoon sun, a unit with more capacity per watt is the safer choice.

Astron gives less cooling per watt at its rated point. Astron publishes an EER of 9.9 kJ/h per W. Working the same ratio from the label figures of the others (our calculation, not a published number): Kelvinator 1.47 kW × 3,600 ÷ 468 W ≈ 11.3 kJ/h per W, and iFFALCON 1.59 kW × 3,600 ÷ 510 W ≈ 11.2 kJ/h per W.

Don’t compare stars across label versions. The Fujidenzo shows 2 stars and the Kelvinator 1 star with almost the same CSPF. Star bands changed between older and newer labels, so stars only compare fairly between labels issued in the same year. CSPF and watts compare fairly across all of them. Our guide to reading the energy label explains this.

Example monthly cost

Example only: 8 hours a night for 30 days, at an example rate of ₱12 per kWh — use your own bill’s rate from our electricity rates page. This uses full rated power, which is the upper end, because a fixed-speed compressor switches off when the room is cool enough. How often it cycles depends on your room.

Run your own hours in the aircon electricity cost calculator.

Worth considering: a 0.7HP inverter

If your budget can stretch, the iFFALCON IFAC-07CWI/UL on Lazada is a 0.7HP inverter window unit with a label CSPF of 5.05, 620 W rated input and 2.05 kW rated capacity. That is about 50% more CSPF than the best 0.6HP unit here, plus more cooling capacity. An inverter also slows its compressor once the room is cool instead of switching fully on and off, which suits all-night use. See our 0.7–0.8HP ranking and inverter vs non-inverter guide.

Not ranked (data not confirmed)

• TCL TAC-06CWI/UB2 (0.6HP inverter): the DOE label shows CSPF 5.25 and 4 stars, but its printed power input (950 W) conflicts with the 470 W retailers list. We won’t quote a wattage until TCL confirms it.
• “Inverter grade” and “inverter class” titles: these are marketing words, not inverter compressors. Astron says its “Inverter Class” means the unit uses R-32 refrigerant. Read what these labels really mean.

Where to buy

• Fujidenzo WAR-632IGT2: Lazada (Fujidenzo store)
• Kelvinator WKELA006EA-TF: Lazada (Kelvinator store)
• iFFALCON IFAC-06CW/UL: Lazada (iFFALCON store)
• Astron TCL-60MA (manual): Lazada · Shopee
• Astron TCL-RE60 (with remote): Lazada · Shopee
• Step-up option, iFFALCON IFAC-07CWI/UL: Lazada · Shopee (TCL Official Store)

Before you pay, check that the model code on the listing matches the one you want. Then check the energy label on the unit when it arrives. Have a licensed technician or the brand’s authorised installer mount the unit and check that your outlet and wiring suit it.

Bottom line

For a 0.6HP window aircon, the Fujidenzo WAR-632IGT2 and Kelvinator WKELA006EA-TF are the most efficient verified choices, and the Kelvinator draws the fewest watts. They are all fixed-speed units. If you run the aircon every night, the 0.7HP iFFALCON IFAC-07CWI/UL inverter gives noticeably more cooling per kWh.