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Cost to run a dehumidifier in Hawaii
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$0.21/hour
Dehumidifier at 450 W in Hawaii (47.18¢/kWh) · $64.54/month at 10 h/day
By hours of use
| Use | Per day | Per month | Per year |
|---|---|---|---|
| 1 h/day | $0.21 | $6.45 | $77.49 |
| 2 h/day | $0.42 | $12.91 | $154.99 |
| 4 h/day | $0.85 | $25.82 | $309.97 |
| 8 h/day | $1.70 | $51.63 | $619.95 |
| 10 h/day | $2.12 | $64.54 | $774.93 |
| 12 h/day | $2.55 | $77.45 | $929.92 |
| 24 h/day | $5.10 | $154.90 | $1,859.84 |
Portable dehumidifiers draw about 300-700 W; Energy Star models remove more water per kWh.
Same appliance, nearby states
| State | ¢/kWh | Per month |
|---|---|---|
| Hawaii | 47.18 | $64.54 |
| California | 29.75 | $40.70 |
| Massachusetts | 30.48 | $41.70 |
| Maine | 32.11 | $43.93 |
FAQ
How much does it cost to run a dehumidifier in Hawaii?
At 450 W and 47.18¢/kWh: $0.21 per hour, $2.12 per day and $64.54 per month at 10 h/day.
How does Hawaii compare with other states?
The same use costs $17.40/month in Nevada (cheapest) and $64.54/month in Hawaii (most expensive); the US average is $24.84.
Price: EIA Electric Power Monthly, Table 5.6.A (residential, August 2026 preliminary; released October 23, 2026).
Dehumidifier cost calculator · Electricity cost in Hawaii
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