Cost to Run a 4,000-watt heat pump for 1 hour in Washington
Running a 4,000-watt heat pump for 1 hour uses 4 kWh and costs $0.46 at $0.115/kWh in Washington. Do that every day and it adds up to $13.80 a month.
Calculate your own cost
- Per hour
- $0.464 kWh
- Per day
- $0.464 kWh
- Per week
- $3.2228 kWh
- Per month (30 days)
- $13.80120 kWh
- Per year
- $167.901,460 kWh
Formula: watts ÷ 1,000 × hours × rate. Edit any box and every number updates instantly.
People also ask
How much does a 4,000-watt heat pump cost per hour?
At $0.115/kWh, it costs $0.46 per hour. The maths: 4,000 W ÷ 1,000 = 4 kWh per hour, × $0.115 = $0.46.
How much does it cost per month?
Used 1 hours a day for 30 days, it costs about $13.80 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 1 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?
Clean filters and keep outdoor coils clear; use the equipment label for a better estimate. 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 Washington
| Used per day | Energy per day | Cost per day | Cost per month | Cost per year |
|---|---|---|---|---|
| 1 hour | 4 kWh | $0.46 | $13.80 | $167.90 |
| 2 hours | 8 kWh | $0.92 | $27.60 | $335.80 |
| 3 hours | 12 kWh | $1.38 | $41.40 | $503.70 |
| 4 hours | 16 kWh | $1.84 | $55.20 | $671.60 |
| 5 hours | 20 kWh | $2.30 | $69.00 | $839.50 |
| 6 hours | 24 kWh | $2.76 | $82.80 | $1,007.40 |
| 7 hours | 28 kWh | $3.22 | $96.60 | $1,175.30 |
| 8 hours | 32 kWh | $3.68 | $110.40 | $1,343.20 |
| 9 hours | 36 kWh | $4.14 | $124.20 | $1,511.10 |
| 10 hours | 40 kWh | $4.60 | $138.00 | $1,679.00 |
| 11 hours | 44 kWh | $5.06 | $151.80 | $1,846.90 |
| 12 hours | 48 kWh | $5.52 | $165.60 | $2,014.80 |
| 13 hours | 52 kWh | $5.98 | $179.40 | $2,182.70 |
| 14 hours | 56 kWh | $6.44 | $193.20 | $2,350.60 |
| 15 hours | 60 kWh | $6.90 | $207.00 | $2,518.50 |
| 16 hours | 64 kWh | $7.36 | $220.80 | $2,686.40 |
| 17 hours | 68 kWh | $7.82 | $234.60 | $2,854.30 |
| 18 hours | 72 kWh | $8.28 | $248.40 | $3,022.20 |
| 19 hours | 76 kWh | $8.74 | $262.20 | $3,190.10 |
| 20 hours | 80 kWh | $9.20 | $276.00 | $3,358.00 |
| 21 hours | 84 kWh | $9.66 | $289.80 | $3,525.90 |
| 22 hours | 88 kWh | $10.12 | $303.60 | $3,693.80 |
| 23 hours | 92 kWh | $10.58 | $317.40 | $3,861.70 |
| 24 hours | 96 kWh | $11.04 | $331.20 | $4,029.60 |
How we worked it out
- Energy per hour: 4,000 W ÷ 1,000 = 4 kWh
- Cost per hour: 4 kWh × $0.115 = $0.46
- Cost per day: × 1 hours = $0.46
- Month and year: × 30 days = $13.80, × 365 days = $167.90
Washington electricity prices
Washington pays about $0.115 per kWh, which is 34% lower than the US average of $0.175. The same heat pump would cost $21.00 a month at the national average.
What it costs in different places
Same 4,000-watt heat pump, 1 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 heat pump running costs
A heat pump moves heat rather than making all heat with resistance elements. Its electrical draw varies with outdoor temperature and system size.
Typical sizes: 1,500 W, 2,000 W, 3,000 W, 4,000 W.
How to spend less: Clean filters and keep outdoor coils clear; use the equipment label for a better estimate.
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 Washington. 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.