How much does a dehumidifier cost to run in Connecticut?
$70 a month while in use, May to September
- A day of use
- $2.29
- An hour of running
- $0.19
- A year (season only)
- $350.51
785 W, 12 hours a day of running time, May to September, at Connecticut’s average rate of 24.3¢ per kWh (EIA, June 2026). How we calculate this
Change the watts, hours or rate
What it costs at other usage levels
| Use | A day | A month in use | A year |
|---|---|---|---|
| 1 hour a day | $0.19 | $5.81 | $29.21 |
| 2 hours a day | $0.38 | $11.61 | $58.42 |
| 4 hours a day | $0.76 | $23.23 | $116.84 |
| 8 hours a day | $1.53 | $46.46 | $233.68 |
| 12 hours a day typical | $2.29 | $69.68 | $350.51 |
| 24 hours a day | $4.58 | $139.37 | $701.03 |
A typical model draws about 785 W (Virginia Cooperative Extension).
Connecticut compared with other states
Connecticut’s residential rate is the 12th most expensive of 51 states and DC, 6.0¢ above the US average of 18.3¢ (+33%). Connecticut’s rate is down 2.9¢ from June 2025 (27.2¢, −10.6%).
Ways to spend less
- Set the humidistat to the highest humidity you are comfortable with rather than the lowest setting; it will run far less.
- Keep doors and windows of the room closed while it runs.
- Clean the filter and coils so it removes water faster per hour of running.
- Cut its running time by two hours a day. Saves about $11.61 a month in season.
Questions
How much does it cost to run a dehumidifier per hour?
About $0.19 an hour in Connecticut. A dehumidifier at 785 W uses 0.785 kWh per hour, and at Connecticut’s average of 24.3¢ per kWh that comes to $0.19.
How much does a dehumidifier add to your electric bill?
Used 12 hours a day of running time, May to September, about $69.68 a month while it is in use in Connecticut, or $350.51 a year across the May to September season.
How much does it cost to run a dehumidifier 24 hours a day?
Running nonstop, a dehumidifier would use 18.8 kWh a day and cost $4.58 a day, or $139.37 over an average month in Connecticut.
How many watts does a dehumidifier use?
A typical model draws about 785 W (Virginia Cooperative Extension). Check the label on yours: cost scales directly with watts, so a 20% lower wattage means a 20% lower bill.
Why does a dehumidifier cost more or less to run in Connecticut than elsewhere?
Connecticut’s residential rate is the 12th most expensive of 51 states and DC, 6.0¢ above the US average of 18.3¢ (+33%). Connecticut’s rate is down 2.9¢ from June 2025 (27.2¢, −10.6%). The appliance uses the same energy everywhere; only the price per kWh changes.
Sources
- Virginia Cooperative Extension: Estimating appliance and home electronic energy use (reproduces U.S. Department of Energy sample wattages)
- Penn State EGEE 102: Typical range of power consumption (wattage)
- U.S. Energy Information Administration, Electric Power Monthly, Table 5.6.A: average price of electricity to ultimate customers, residential, June 2026 Figures transcribed from republications of this table on September 26, 2026; pending direct verification from the EIA API.
- Carrier page: June 2026 residential average price, citing EIA Electric Power Monthly Table 5.6.A
Usage assumptions (hours a day, season) are ours and listed on the methodology page. Found an error? Tell us.