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What size generator or power station for a dehumidifier? (650+ W)
To run a dehumidifier, choose at least
650 W running · 900 W startup surge.
650 W running · 900 W startup surge.
A dehumidifier draws about 500 W while running, but its motor can spike to roughly 900 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 31 min |
| 500 Wh | 0 h 51 min |
| 1,000 Wh | 1 h 42 min |
| 2,000 Wh | 3 h 24 min |
| 3,000 Wh | 5 h 6 min |
Sizing guide
| Minimum running watts | 650 W |
| Minimum starting watts | 900 W |
| Suggested inverter | 900 W or higher |
See also dehumidifier wattage and running cost.
FAQ
How many watts does a dehumidifier use?
Typically 300-700 watts while the compressor runs.
How much does a dehumidifier cost to run?
Running 8 hours a day, expect a few dollars a week at average electricity rates.
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