How Many Solar Panels Does It Take to Run a 1HP Inverter Aircon?

A 1HP inverter aircon used 8 hours a day needs roughly 1,000–1,300W of solar panels feeding a battery, based on verified aircon ratings of 650–880W and an example of 4 peak sun hours. For the 740W Kolin KA-100GQAIINV32, that’s about 1,090W, which works out to 5 × EcoFlow 220W panels in series on an EcoFlow DELTA Pro 3.

Step 1: The aircon’s verified watts

Figures are from DOE energy labels reproduced by retailers.

Step 2: Energy per day

Example assumptions: 8 hours of use a day, and the unit averages half its rated watts once the room is cool. The DOE’s older label formula uses the same 0.5 factor for inverter units. Your own use may be higher on hot afternoons.

• Kolin 740W × 8 h × 0.5 = 2,960 Wh at the aircon
• The station loses some energy turning battery DC into AC. Our EcoFlow runtime calculator assumes 85% reaches AC devices: 2,960 ÷ 0.85 = 3,482 Wh from the battery

Step 3: Panel watts

Example assumption: 4 peak sun hours, and about 80% of rated panel watts reaching the battery after heat, angle and charging losses (why panels give less than rated).

Panel watts ≈ 3,482 ÷ 4 ÷ 0.8 ≈ 1,090W

Same maths for the other models: about 960W for the 650W TCL P7, and about 1,290W for the 880W iFFALCON. A low-watt unit really does save you panels.

Verified setups that reach that size

A 1,000W+ array needs a station with a big solar input. These are within EcoFlow’s published port limits:

Notes from the manuals:

• The 220W panels’ MC4 leads join male-to-female for series wiring.
• EcoFlow’s DELTA Pro 3 manual specifies a “Solar to XT60 Charging cable” for the High-PV port. EcoFlow doesn’t say whether the 220W panel’s included XT60i cable fits that port, so check before you buy.
• The 400W Lightweight needs a series cable that is sold separately.
• The DELTA 3 Max takes a maximum of 500W of solar, so it can’t reach 1,000W. Use it for a few hours of cooling, not all-day use.

These are portable, plug-and-play panels the owner can set up by following the manual. Mounting panels on the roof or wiring them to the house needs a licensed electrician and an LGU permit.

What about rooftop panels?

For a permanent system, a hybrid inverter like the PowMr 6.5kW (48V) takes a larger roof array. See running your aircon on solar while the sun is up. That route needs a licensed PEE design, an LGU permit and, for grid export, the net-metering process.

What to buy

• Station: EcoFlow DELTA Pro 3 on Lazada (EcoFlow PH) · Shopee
• Panels: 5–6 × EcoFlow 220W on Lazada, or 3 × EcoFlow 400W Lightweight on Lazada
• Smaller start: EcoFlow DELTA 3 Max on Shopee · Lazada with 2 × 220W
• Low-watt aircon: TCL TAC-11CSD/P7 on Lazada · Shopee, or Kolin KA-100GQAIINV32 on Lazada

Check today’s price before you buy. Have the aircon installed by a licensed technician.

Bottom line

Divide the aircon’s daily Wh by 0.85, then by your sun hours, then by 0.8. For a verified 1HP inverter unit used 8 hours a day, that’s about 1,000–1,300W of panels, which in practice means a DELTA Pro 3-class station or a licensed rooftop system. Try your own numbers in the solar system size calculator.