How Much Does a 400-watt dehumidifier Cost to Run in Oklahoma?
A 400-watt dehumidifier uses 0.4 kWh per hour and costs $0.052 per hour at $0.13/kWh in Oklahoma. Used 10 hours a day, that is $0.52 per day, $15.60 per month and $189.80 per year.
Calculate your own cost
- Per hour
- $0.0520.4 kWh
- Per day
- $0.524 kWh
- Per week
- $3.6428 kWh
- Per month (30 days)
- $15.60120 kWh
- Per year
- $189.801,460 kWh
Formula: watts ÷ 1,000 × hours × rate. Edit any box and every number updates instantly.
People also ask
How much does a 400-watt dehumidifier cost per hour?
At $0.13/kWh, it costs $0.052 per hour. The maths: 400 W ÷ 1,000 = 0.4 kWh per hour, × $0.13 = $0.052.
How much does it cost per month?
Used 10 hours a day for 30 days, it costs about $15.60 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 10 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 in Oklahoma
| Used per day | Energy per day | Cost per day | Cost per month | Cost per year |
|---|---|---|---|---|
| 1 hour | 0.4 kWh | $0.052 | $1.56 | $18.98 |
| 2 hours | 0.8 kWh | $0.104 | $3.12 | $37.96 |
| 3 hours | 1.2 kWh | $0.156 | $4.68 | $56.94 |
| 4 hours | 1.6 kWh | $0.208 | $6.24 | $75.92 |
| 5 hours | 2 kWh | $0.26 | $7.80 | $94.90 |
| 6 hours | 2.4 kWh | $0.312 | $9.36 | $113.88 |
| 7 hours | 2.8 kWh | $0.364 | $10.92 | $132.86 |
| 8 hours | 3.2 kWh | $0.416 | $12.48 | $151.84 |
| 9 hours | 3.6 kWh | $0.468 | $14.04 | $170.82 |
| 10 hours | 4 kWh | $0.52 | $15.60 | $189.80 |
| 11 hours | 4.4 kWh | $0.572 | $17.16 | $208.78 |
| 12 hours | 4.8 kWh | $0.624 | $18.72 | $227.76 |
| 13 hours | 5.2 kWh | $0.676 | $20.28 | $246.74 |
| 14 hours | 5.6 kWh | $0.728 | $21.84 | $265.72 |
| 15 hours | 6 kWh | $0.78 | $23.40 | $284.70 |
| 16 hours | 6.4 kWh | $0.832 | $24.96 | $303.68 |
| 17 hours | 6.8 kWh | $0.884 | $26.52 | $322.66 |
| 18 hours | 7.2 kWh | $0.936 | $28.08 | $341.64 |
| 19 hours | 7.6 kWh | $0.988 | $29.64 | $360.62 |
| 20 hours | 8 kWh | $1.04 | $31.20 | $379.60 |
| 21 hours | 8.4 kWh | $1.09 | $32.76 | $398.58 |
| 22 hours | 8.8 kWh | $1.14 | $34.32 | $417.56 |
| 23 hours | 9.2 kWh | $1.20 | $35.88 | $436.54 |
| 24 hours | 9.6 kWh | $1.25 | $37.44 | $455.52 |
How we worked it out
- Energy per hour: 400 W ÷ 1,000 = 0.4 kWh
- Cost per hour: 0.4 kWh × $0.13 = $0.052
- Cost per day: × 10 hours = $0.52
- Month and year: × 30 days = $15.60, × 365 days = $189.80
Oklahoma electricity prices
Oklahoma pays about $0.13 per kWh, which is 26% lower than the US average of $0.175. The same dehumidifier would cost $21.00 a month at the national average.
What it costs in different places
Same 400-watt dehumidifier, 10 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 in Oklahoma. 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.