How Much Does a 500-watt dehumidifier Cost to Run in Massachusetts?
A 500-watt dehumidifier uses 0.5 kWh per hour and costs $0.155 per hour at $0.31/kWh in Massachusetts. Used 10 hours a day, that is $1.55 per day, $46.50 per month and $565.75 per year.
Calculate your own cost
- Per hour
- $0.1550.5 kWh
- Per day
- $1.555 kWh
- Per week
- $10.8535 kWh
- Per month (30 days)
- $46.50150 kWh
- Per year
- $565.751,825 kWh
Formula: watts ÷ 1,000 × hours × rate. Edit any box and every number updates instantly.
People also ask
How much does a 500-watt dehumidifier cost per hour?
At $0.31/kWh, it costs $0.155 per hour. The maths: 500 W ÷ 1,000 = 0.5 kWh per hour, × $0.31 = $0.155.
How much does it cost per month?
Used 10 hours a day for 30 days, it costs about $46.50 per month and uses 150 kWh. Change the hours in the calculator above to match how you use it.
How many kWh does it use?
5 kWh per day, 150 kWh per month and 1,825 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 $15.00 and at 30¢ it is $45.00. Find your rate on your bill (total cost ÷ kWh used) and type it into the calculator.
Cost by hours of use in Massachusetts
| Used per day | Energy per day | Cost per day | Cost per month | Cost per year |
|---|---|---|---|---|
| 1 hour | 0.5 kWh | $0.155 | $4.65 | $56.58 |
| 2 hours | 1 kWh | $0.31 | $9.30 | $113.15 |
| 3 hours | 1.5 kWh | $0.465 | $13.95 | $169.73 |
| 4 hours | 2 kWh | $0.62 | $18.60 | $226.30 |
| 5 hours | 2.5 kWh | $0.775 | $23.25 | $282.88 |
| 6 hours | 3 kWh | $0.93 | $27.90 | $339.45 |
| 7 hours | 3.5 kWh | $1.09 | $32.55 | $396.03 |
| 8 hours | 4 kWh | $1.24 | $37.20 | $452.60 |
| 9 hours | 4.5 kWh | $1.40 | $41.85 | $509.18 |
| 10 hours | 5 kWh | $1.55 | $46.50 | $565.75 |
| 11 hours | 5.5 kWh | $1.71 | $51.15 | $622.33 |
| 12 hours | 6 kWh | $1.86 | $55.80 | $678.90 |
| 13 hours | 6.5 kWh | $2.02 | $60.45 | $735.48 |
| 14 hours | 7 kWh | $2.17 | $65.10 | $792.05 |
| 15 hours | 7.5 kWh | $2.33 | $69.75 | $848.63 |
| 16 hours | 8 kWh | $2.48 | $74.40 | $905.20 |
| 17 hours | 8.5 kWh | $2.64 | $79.05 | $961.78 |
| 18 hours | 9 kWh | $2.79 | $83.70 | $1,018.35 |
| 19 hours | 9.5 kWh | $2.95 | $88.35 | $1,074.93 |
| 20 hours | 10 kWh | $3.10 | $93.00 | $1,131.50 |
| 21 hours | 10.5 kWh | $3.26 | $97.65 | $1,188.08 |
| 22 hours | 11 kWh | $3.41 | $102.30 | $1,244.65 |
| 23 hours | 11.5 kWh | $3.57 | $106.95 | $1,301.23 |
| 24 hours | 12 kWh | $3.72 | $111.60 | $1,357.80 |
How we worked it out
- Energy per hour: 500 W ÷ 1,000 = 0.5 kWh
- Cost per hour: 0.5 kWh × $0.31 = $0.155
- Cost per day: × 10 hours = $1.55
- Month and year: × 30 days = $46.50, × 365 days = $565.75
Massachusetts electricity prices
Massachusetts pays about $0.31 per kWh, which is 77% higher than the US average of $0.175. The same dehumidifier would cost $26.25 a month at the national average.
What it costs in different places
Same 500-watt dehumidifier, 10 hours a day. Only the local electricity rate changes.
| Place | Rate per kWh | Cost per month |
|---|---|---|
| United States | $0.175 | $26.25 |
| California | $0.32 | $48.00 |
| Texas | $0.155 | $23.25 |
| New York | $0.25 | $37.50 |
| Florida | $0.155 | $23.25 |
| Illinois | $0.17 | $25.50 |
| Pennsylvania | $0.18 | $27.00 |
| Ohio | $0.17 | $25.50 |
| Washington | $0.115 | $17.25 |
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 Massachusetts. 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.