Guides · Updated October 12, 2026
Can a power station run a window air conditioner?
Yes, for a 5,000 to 6,000 BTU unit. It draws about 450 W averaged over an hour and surges to 1,500 W at startup, so a 2 kWh station runs it for about 4 hours and a 3 kWh station for about 6 hours. Bigger units and central air are out of reach for portable batteries.
Hours of cooling per charge
| Unit | Battery | 5,000 BTU (450 W) | 8,000 BTU (about 700 W) |
|---|---|---|---|
| Bluetti Elite 200 V2 | 2,074 Wh | 4 hours | 3 hours |
| EcoFlow DELTA 3 Max | 2,048 Wh | 4 hours | 2 hours |
| Bluetti Apex 300 | 2,765 Wh | 5 hours | 3 hours |
| Jackery HomePower 3000 | 3,072 Wh | 6 hours | 4 hours |
| EcoFlow DELTA Pro 3 | 4,096 Wh | 8 hours | 5 hours |
Averages assume the compressor cycles about 60% of the time in a closed room. On a 95°F day with the door open, it runs nonstop and these halve.
Three things that double your hours
- Buy an inverter-compressor AC. Models from Midea, LG and GE labeled "inverter" or "variable speed" have almost no startup surge and use 30 to 40% less energy at steady state.
- Cool one room. Close the door, block the sun, and run the AC in the bedroom only.
- Add solar. 400 W of panels can cover most of a small AC's daytime draw, saving the battery for the night.
The units that fit
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HomePower 3000
Cheapest unit that runs Window AC for about 1.5 days.
Yeti PRO 4000
Extra headroom: about 1.9 days on one charge, and it accepts add-on batteries.
Prices are each brand's list price on October 12, 2026; buy links go to Amazon, where the price can differ. Adjust the devices and days in the finder for your own numbers, or see all 20 models.
Common questions
Can a 1 kWh power station run a window AC?
It can start a 5,000 BTU unit (2,700 W surge or more needed) but only runs it for about two hours. Fine for a nap, not for a night.
What about a portable AC on wheels?
Those are less efficient than window units and draw 900 to 1,400 W. Expect half the runtime of the table above.