Cost to Run a 4,000-watt heat pump for 2 hours
Running a 4,000-watt heat pump for 2 hours uses 8 kWh and costs $1.40 at $0.175/kWh. Do that every day and it adds up to $42.00 a month.
Calculate your own cost
- Per hour
- $0.704 kWh
- Per day
- $1.408 kWh
- Per week
- $9.8056 kWh
- Per month (30 days)
- $42.00240 kWh
- Per year
- $511.002,920 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 $0.175/kWh, it costs $0.70 per hour. The maths: 4,000 W ÷ 1,000 = 4 kWh per hour, × $0.175 = $0.70.
How much does it cost per month?
Used 2 hours a day for 30 days, it costs about $42.00 per month and uses 240 kWh. Change the hours in the calculator above to match how you use it.
How many kWh does it use?
8 kWh per day, 240 kWh per month and 2,920 kWh per year at 2 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 $24.00 and at 30¢ it is $72.00. 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 | 4 kWh | $0.70 | $21.00 | $255.50 |
| 2 hours | 8 kWh | $1.40 | $42.00 | $511.00 |
| 3 hours | 12 kWh | $2.10 | $63.00 | $766.50 |
| 4 hours | 16 kWh | $2.80 | $84.00 | $1,022.00 |
| 5 hours | 20 kWh | $3.50 | $105.00 | $1,277.50 |
| 6 hours | 24 kWh | $4.20 | $126.00 | $1,533.00 |
| 7 hours | 28 kWh | $4.90 | $147.00 | $1,788.50 |
| 8 hours | 32 kWh | $5.60 | $168.00 | $2,044.00 |
| 9 hours | 36 kWh | $6.30 | $189.00 | $2,299.50 |
| 10 hours | 40 kWh | $7.00 | $210.00 | $2,555.00 |
| 11 hours | 44 kWh | $7.70 | $231.00 | $2,810.50 |
| 12 hours | 48 kWh | $8.40 | $252.00 | $3,066.00 |
| 13 hours | 52 kWh | $9.10 | $273.00 | $3,321.50 |
| 14 hours | 56 kWh | $9.80 | $294.00 | $3,577.00 |
| 15 hours | 60 kWh | $10.50 | $315.00 | $3,832.50 |
| 16 hours | 64 kWh | $11.20 | $336.00 | $4,088.00 |
| 17 hours | 68 kWh | $11.90 | $357.00 | $4,343.50 |
| 18 hours | 72 kWh | $12.60 | $378.00 | $4,599.00 |
| 19 hours | 76 kWh | $13.30 | $399.00 | $4,854.50 |
| 20 hours | 80 kWh | $14.00 | $420.00 | $5,110.00 |
| 21 hours | 84 kWh | $14.70 | $441.00 | $5,365.50 |
| 22 hours | 88 kWh | $15.40 | $462.00 | $5,621.00 |
| 23 hours | 92 kWh | $16.10 | $483.00 | $5,876.50 |
| 24 hours | 96 kWh | $16.80 | $504.00 | $6,132.00 |
How we worked it out
- Energy per hour: 4,000 W ÷ 1,000 = 4 kWh
- Cost per hour: 4 kWh × $0.175 = $0.70
- Cost per day: × 2 hours = $1.40
- Month and year: × 30 days = $42.00, × 365 days = $511.00
What it costs in different places
Same 4,000-watt heat pump, 2 hours a day. Only the local electricity rate changes.
| Place | Rate per kWh | Cost per month |
|---|---|---|
| United States | $0.175 | $42.00 |
| California | $0.32 | $76.80 |
| Texas | $0.155 | $37.20 |
| New York | $0.25 | $60.00 |
| Florida | $0.155 | $37.20 |
| Illinois | $0.17 | $40.80 |
| Pennsylvania | $0.18 | $43.20 |
| Ohio | $0.17 | $40.80 |
| Washington | $0.115 | $27.60 |
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. 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.