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Cost to run a dehumidifier in Massachusetts
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$0.14/hour
Dehumidifier at 450 W in Massachusetts (30.48¢/kWh) · $41.70/month at 10 h/day
By hours of use
| Use | Per day | Per month | Per year |
|---|---|---|---|
| 1 h/day | $0.14 | $4.17 | $50.06 |
| 2 h/day | $0.27 | $8.34 | $100.13 |
| 4 h/day | $0.55 | $16.68 | $200.25 |
| 8 h/day | $1.10 | $33.36 | $400.51 |
| 10 h/day | $1.37 | $41.70 | $500.63 |
| 12 h/day | $1.65 | $50.04 | $600.76 |
| 24 h/day | $3.29 | $100.07 | $1,201.52 |
Portable dehumidifiers draw about 300-700 W; Energy Star models remove more water per kWh.
Same appliance, nearby states
| State | ¢/kWh | Per month |
|---|---|---|
| Massachusetts | 30.48 | $41.70 |
| New York | 28.65 | $39.19 |
| Alaska | 29.41 | $40.23 |
| California | 29.75 | $40.70 |
| Maine | 32.11 | $43.93 |
| Hawaii | 47.18 | $64.54 |
FAQ
How much does it cost to run a dehumidifier in Massachusetts?
At 450 W and 30.48¢/kWh: $0.14 per hour, $1.37 per day and $41.70 per month at 10 h/day.
How does Massachusetts 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 Massachusetts
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