Cost to Run a 250-watt dehumidifier for 16 hours
Running a 250-watt dehumidifier for 16 hours uses 4 kWh and costs $0.70 at $0.175/kWh. Do that every day and it adds up to $21.00 a month.
Calculate your own cost
- Per hour
- $0.0440.25 kWh
- Per day
- $0.704 kWh
- Per week
- $4.9028 kWh
- Per month (30 days)
- $21.00120 kWh
- Per year
- $255.501,460 kWh
Formula: watts ÷ 1,000 × hours × rate. Edit any box and every number updates instantly.
People also ask
How much does a 250-watt dehumidifier cost per hour?
At $0.175/kWh, it costs $0.044 per hour. The maths: 250 W ÷ 1,000 = 0.25 kWh per hour, × $0.175 = $0.044.
How much does it cost per month?
Used 16 hours a day for 30 days, it costs about $21.00 per month and uses 120 kWh. Change the hours in the calculator above to match how you use it.
How many kWh does it use?
4 kWh per day, 120 kWh per month and 1,460 kWh per year at 16 hours a day. A kWh is one kilowatt (1,000 W) used for one hour. It is the unit on your electricity bill.
How can I lower the cost?
Set the target to 45 to 50% humidity. Lower than that wastes electricity. Check your bill for the exact rate and enter it above.
Does my electricity rate change the answer?
Yes, a lot. At 10¢ per kWh the monthly cost is $12.00 and at 30¢ it is $36.00. Find your rate on your bill (total cost ÷ kWh used) and type it into the calculator.
Cost by hours of use
| Used per day | Energy per day | Cost per day | Cost per month | Cost per year |
|---|---|---|---|---|
| 1 hour | 0.25 kWh | $0.044 | $1.31 | $15.97 |
| 2 hours | 0.5 kWh | $0.088 | $2.63 | $31.94 |
| 3 hours | 0.75 kWh | $0.131 | $3.94 | $47.91 |
| 4 hours | 1 kWh | $0.175 | $5.25 | $63.88 |
| 5 hours | 1.25 kWh | $0.219 | $6.56 | $79.84 |
| 6 hours | 1.5 kWh | $0.263 | $7.88 | $95.81 |
| 7 hours | 1.75 kWh | $0.306 | $9.19 | $111.78 |
| 8 hours | 2 kWh | $0.35 | $10.50 | $127.75 |
| 9 hours | 2.25 kWh | $0.394 | $11.81 | $143.72 |
| 10 hours | 2.5 kWh | $0.438 | $13.13 | $159.69 |
| 11 hours | 2.75 kWh | $0.481 | $14.44 | $175.66 |
| 12 hours | 3 kWh | $0.525 | $15.75 | $191.63 |
| 13 hours | 3.25 kWh | $0.569 | $17.06 | $207.59 |
| 14 hours | 3.5 kWh | $0.613 | $18.38 | $223.56 |
| 15 hours | 3.75 kWh | $0.656 | $19.69 | $239.53 |
| 16 hours | 4 kWh | $0.70 | $21.00 | $255.50 |
| 17 hours | 4.25 kWh | $0.744 | $22.31 | $271.47 |
| 18 hours | 4.5 kWh | $0.788 | $23.63 | $287.44 |
| 19 hours | 4.75 kWh | $0.831 | $24.94 | $303.41 |
| 20 hours | 5 kWh | $0.875 | $26.25 | $319.38 |
| 21 hours | 5.25 kWh | $0.919 | $27.56 | $335.34 |
| 22 hours | 5.5 kWh | $0.963 | $28.88 | $351.31 |
| 23 hours | 5.75 kWh | $1.01 | $30.19 | $367.28 |
| 24 hours | 6 kWh | $1.05 | $31.50 | $383.25 |
How we worked it out
- Energy per hour: 250 W ÷ 1,000 = 0.25 kWh
- Cost per hour: 0.25 kWh × $0.175 = $0.044
- Cost per day: × 16 hours = $0.70
- Month and year: × 30 days = $21.00, × 365 days = $255.50
What it costs in different places
Same 250-watt dehumidifier, 16 hours a day. Only the local electricity rate changes.
| Place | Rate per kWh | Cost per month |
|---|---|---|
| United States | $0.175 | $21.00 |
| California | $0.32 | $38.40 |
| Texas | $0.155 | $18.60 |
| New York | $0.25 | $30.00 |
| Florida | $0.155 | $18.60 |
| Illinois | $0.17 | $20.40 |
| Pennsylvania | $0.18 | $21.60 |
| Ohio | $0.17 | $20.40 |
| Washington | $0.115 | $13.80 |
About dehumidifier running costs
A dehumidifier cycles on and off with a humidistat, so real running time is well under 24 hours.
Typical sizes: 250 W, 400 W, 500 W, 700 W.
How to spend less: Set the target to 45 to 50% humidity. Lower than that wastes electricity.
What this estimate assumes
- The appliance draws its full stated wattage the whole time it is on. Real units with a thermostat cycle off and cost less.
- Wattage is the typical label value, not a measured value. Check the label on your own appliance.
- The rate is an approximate residential average. Your bill may include fixed fees, tiers or time-of-use pricing. Edit the rate above.
- A month is 30 days and a year is 365 days.