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What size generator or power station for an air compressor? (1,900+ W)
To run an air compressor, choose at least
1,900 W running · 4,000 W startup surge.
1,900 W running · 4,000 W startup surge.
An air compressor draws about 1,500 W while running, but its motor can spike to roughly 4,000 W at startup, so size for the surge. Pick a generator, inverter or power station rated comfortably above these numbers.
Battery runtime calculator
Estimated runtime—
Assumes about 85% usable capacity. Motors need extra headroom for startup surge.
How long a power station lasts
| Power station | Estimated runtime |
|---|---|
| 300 Wh | 0 h 10 min |
| 500 Wh | 0 h 17 min |
| 1,000 Wh | 0 h 34 min |
| 2,000 Wh | 1 h 8 min |
| 3,000 Wh | 1 h 42 min |
Sizing guide
| Minimum running watts | 1,900 W |
| Minimum starting watts | 4,000 W |
| Suggested inverter | 4,000 W or higher |
See also air compressor wattage and running cost.
FAQ
How many watts does an air compressor use?
Roughly 1000-2400 running watts, with a much higher surge at startup.
Why does my compressor trip breakers?
The startup surge can briefly double the running draw, tripping a marginal circuit.
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