Cost to Run a 250-watt dehumidifier for 8 hours in Illinois
Running a 250-watt dehumidifier for 8 hours uses 2 kWh and costs $0.34 at $0.17/kWh in Illinois. Do that every day and it adds up to $10.20 a month.
Calculate your own cost
- Per hour
- $0.0430.25 kWh
- Per day
- $0.342 kWh
- Per week
- $2.3814 kWh
- Per month (30 days)
- $10.2060 kWh
- Per year
- $124.10730 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 $0.17/kWh, it costs $0.043 per hour. The maths: 250 W ÷ 1,000 = 0.25 kWh per hour, × $0.17 = $0.043.
How much does it cost per month?
Used 8 hours a day for 30 days, it costs about $10.20 per month and uses 60 kWh. Change the hours in the calculator above to match how you use it.
How many kWh does it use?
2 kWh per day, 60 kWh per month and 730 kWh per year at 8 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 $6.00 and at 30¢ it is $18.00. Find your rate on your bill (total cost ÷ kWh used) and type it into the calculator.
Cost by hours of use in Illinois
| Used per day | Energy per day | Cost per day | Cost per month | Cost per year |
|---|---|---|---|---|
| 1 hour | 0.25 kWh | $0.043 | $1.28 | $15.51 |
| 2 hours | 0.5 kWh | $0.085 | $2.55 | $31.03 |
| 3 hours | 0.75 kWh | $0.128 | $3.83 | $46.54 |
| 4 hours | 1 kWh | $0.17 | $5.10 | $62.05 |
| 5 hours | 1.25 kWh | $0.213 | $6.38 | $77.56 |
| 6 hours | 1.5 kWh | $0.255 | $7.65 | $93.08 |
| 7 hours | 1.75 kWh | $0.298 | $8.93 | $108.59 |
| 8 hours | 2 kWh | $0.34 | $10.20 | $124.10 |
| 9 hours | 2.25 kWh | $0.383 | $11.48 | $139.61 |
| 10 hours | 2.5 kWh | $0.425 | $12.75 | $155.13 |
| 11 hours | 2.75 kWh | $0.468 | $14.03 | $170.64 |
| 12 hours | 3 kWh | $0.51 | $15.30 | $186.15 |
| 13 hours | 3.25 kWh | $0.553 | $16.58 | $201.66 |
| 14 hours | 3.5 kWh | $0.595 | $17.85 | $217.18 |
| 15 hours | 3.75 kWh | $0.638 | $19.13 | $232.69 |
| 16 hours | 4 kWh | $0.68 | $20.40 | $248.20 |
| 17 hours | 4.25 kWh | $0.723 | $21.68 | $263.71 |
| 18 hours | 4.5 kWh | $0.765 | $22.95 | $279.23 |
| 19 hours | 4.75 kWh | $0.808 | $24.23 | $294.74 |
| 20 hours | 5 kWh | $0.85 | $25.50 | $310.25 |
| 21 hours | 5.25 kWh | $0.893 | $26.78 | $325.76 |
| 22 hours | 5.5 kWh | $0.935 | $28.05 | $341.28 |
| 23 hours | 5.75 kWh | $0.978 | $29.33 | $356.79 |
| 24 hours | 6 kWh | $1.02 | $30.60 | $372.30 |
How we worked it out
- Energy per hour: 250 W ÷ 1,000 = 0.25 kWh
- Cost per hour: 0.25 kWh × $0.17 = $0.043
- Cost per day: × 8 hours = $0.34
- Month and year: × 30 days = $10.20, × 365 days = $124.10
Illinois electricity prices
Illinois pays about $0.17 per kWh, which is 3% lower than the US average of $0.175. The same dehumidifier would cost $10.50 a month at the national average.
What it costs in different places
Same 250-watt dehumidifier, 8 hours a day. Only the local electricity rate changes.
| Place | Rate per kWh | Cost per month |
|---|---|---|
| United States | $0.175 | $10.50 |
| California | $0.32 | $19.20 |
| Texas | $0.155 | $9.30 |
| New York | $0.25 | $15.00 |
| Florida | $0.155 | $9.30 |
| Illinois | $0.17 | $10.20 |
| Pennsylvania | $0.18 | $10.80 |
| Ohio | $0.17 | $10.20 |
| Washington | $0.115 | $6.90 |
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 in Illinois. 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.