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Can a Power Station Run a Window Air Conditioner?

By Hicham M. · Updated October 11, 2026 · How we calculate

Yes, if it’s a small one. A 5,000 BTU window unit runs at about 450 W and needs around 1,100 W to start its compressor. Because it cycles, it averages about 225 W: roughly 3.8 hours on a 1,000 Wh power station and 7.6 hours on a 2,000 Wh one.

Frigidaire’s FFRE0533U1, a typical 5,000 BTU model, is rated 420 W and 3.7 A while cooling, close to our figure. Bigger units use more. Air conditioning drains a battery quickly, so it works best with solar coming in or a big battery.

Running450 Wtypical range 350–600 W
Starting (surge)1,100 Wfor a split second
Average225 Wincluding on/off cycling
Per day1.8 kWhat 8 h/day
Calculate with your model Find the right size

Runtime by power station

Nonstop runtime for one window AC at 225 W average, with 85% inverter efficiency. Models that can't supply its running or starting power are listed separately below.

How long each power station runs a window AC: longest 10
Power stationBatteryRuntimeBar
Jackery Explorer 5000 Plus5,040 Wh19 hours
EcoFlow DELTA Pro 34,096 Wh15 hours
Goal Zero Yeti PRO 40003,994 Wh15 hours
Anker SOLIX F38003,840 Wh15 hours
Anker SOLIX F3800 Plus3,840 Wh15 hours
EcoFlow DELTA Pro Older3,600 Wh14 hours
Anker SOLIX F30003,072 Wh12 hours
BLUETTI Elite 3003,014 Wh11 hours
BLUETTI Apex 3002,765 Wh10 hours
BLUETTI Elite 200 V22,074 Wh7.8 hours
Show the other 35 models that can run it
How long each power station runs a window AC: the rest
Power stationBatteryRuntimeBar
EcoFlow DELTA 3 Max2,048 Wh7.7 hours
EcoFlow DELTA 3 Max Plus2,048 Wh7.7 hours
EcoFlow DELTA 2 Max Older2,048 Wh7.7 hours
BLUETTI AC200L2,048 Wh7.7 hours
BLUETTI AC200MAX Older2,048 Wh7.7 hours
Anker SOLIX C2000 Gen 22,048 Wh7.7 hours
Anker SOLIX F2000 (767) Older2,048 Wh7.7 hours
DJI Power 20002,048 Wh7.7 hours
Jackery Explorer 2000 v22,042 Wh7.7 hours
Jackery Explorer 2000 Plus Older2,042 Wh7.7 hours
BLUETTI AC200P Older2,000 Wh7.6 hours
Jackery Explorer 1500 v21,536 Wh5.8 hours
Jackery Explorer 1500 Ultra1,536 Wh5.8 hours
Goal Zero Yeti 1500X Older1,516 Wh5.7 hours
Goal Zero Yeti 15001,505 Wh5.7 hours
Jackery Explorer 1000 Plus1,264 Wh4.8 hours
Anker SOLIX F1200 (757) Older1,229 Wh4.6 hours
BLUETTI AC1801,152 Wh4.4 hours
Jackery Explorer 1000 v21,070 Wh4 hours
Anker SOLIX C10001,056 Wh4 hours
EcoFlow DELTA 31,024 Wh3.9 hours
EcoFlow DELTA 3 Plus1,024 Wh3.9 hours
EcoFlow DELTA 2 Older1,024 Wh3.9 hours
BLUETTI Elite 100 V21,024 Wh3.9 hours
Anker SOLIX C1000 Gen 21,024 Wh3.9 hours
DJI Power 10001,024 Wh3.9 hours
Jackery Explorer 1000 Pro Older1,002 Wh3.8 hours
Jackery Explorer 1000 Older1,002 Wh3.8 hours
Goal Zero Yeti 1000998 Wh3.8 hours
EcoFlow RIVER 2 Pro Older768 Wh2.9 hours
Anker SOLIX C800 Plus768 Wh2.9 hours
BLUETTI EB70S Older716 Wh2.7 hours
DJI Power 500 May not start it: surge not published512 Wh1.9 hours
EcoFlow RIVER 3 Plus286 Wh1.1 hours
BLUETTI EB3A Older269 Wh1 hours

Models that can't run it

Power stationOutputSurgeWhy
Goal Zero Yeti 700600 W1,000 WCan’t start it
Jackery Explorer 500500 W1,000 WCan’t start it
EcoFlow RIVER 2 Max500 W1,000 WCan’t start it
Jackery Explorer 300300 W500 WNot enough output
Jackery Explorer 300 v2300 W600 WNot enough output
Anker SOLIX C300300 W600 WNot enough output
Jackery Explorer 240 v2300 W600 WNot enough output
EcoFlow RIVER 3300 W600 WNot enough output
Jackery Explorer 240200 W400 WNot enough output

We may earn a commission if you buy through these links. It never changes our numbers, and every model in our database is included whether or not it pays us. Learn more.

Inverter ACs change the math

Newer variable-speed (inverter) window units slow down instead of switching off and on. ENERGY STAR lists Midea’s 8,000 BTU U-shaped inverter model (MAW08V1QWT) at a CEER of 15.0 and 38% less energy than the federal standard. Compare a basic unit:

Room AC efficiency comparison
12,000 BTU unit (DOE example)CEERPer year
At the federal minimum10.9826 kWh
ENERGY STAR level14.7612 kWh
DOE’s “best available” example15.4584 kWh

DOE’s Federal Energy Management Program example, based on 750 hours of use a year. CEER is BTUs of cooling per watt-hour, so higher is better.

Cooling longer on a battery

Questions

What size power station do I need to run an AC overnight?
For 8 hours of a 5,000 BTU unit, plan on about 2,100 Wh of battery (about 2,300 Wh with a 10% margin) and at least 1,200 W of surge. Larger units need proportionally more.
Will a window AC restart by itself after a power cut?
Many do. Frigidaire’s FFRE0533U1, for example, resumes its previous settings when power returns. Check your model’s manual.

Related

Sources

Wattage figures are typical values from the sources below. Your appliance may differ, so check its label or measure it with a plug-in watt meter.

  1. data.energystar.gov/resource/5xn2-dv4h.json
  2. ecfr.gov/current/title-10/chapter-II/subchapter-D/part-430/subpar…
  3. championpowerequipment.com/generator-wattage-chart
  4. assets.ajmadison.com/ajmadison/itemdocs/FFRE0533U1_0118_EN.pdf
  5. energystar.gov/products/room_air_conditioners
  6. energystar.gov/productfinder/product/certified-room-air-conditioners/de…
  7. energy.gov/eere/femp/purchasing-energy-efficient-room-air-conditioners
  8. images.salsify.com/image/upload/s--nBNfXMv7--/bfc59891998614ede1442112ebdc8…