Running a 1,500-watt space heater 8 hours a day in Utah costs about $48.15 a month — $0.20 an hour on full power at Utah's average 13.19¢/kWh.
At 13.19¢/kWh — Utah average, Jan–Aug 2026 (EIA). That is 27% below the U.S. average of 18.19¢.
| Period | kWh | Cost |
|---|---|---|
| Per hour of use | 1.5 | $0.20 |
| Per day | 12 | $1.58 |
| Per month | 365 | $48.15 |
| Per season (8 mo) | 2,920 | $385 |
Normal mean temperature (NOAA, population-weighted). Highlighted months average below 60°F.
| Heat source | $ per million Btu | This much heat |
|---|---|---|
| Gas furnace, 95% AFUE | $10.36 | $12.90 |
| Gas furnace, 80% AFUE | $12.30 | $15.32 |
| Heat pump (ENERGY STAR avg) | $15.63 | $19.46 |
| Propane furnace, 95% AFUE | $26.81 | $33.39 |
| Space heater / baseboard | $38.66 | $48.15 |
In Utah resistance heat costs 3.7× as much as gas heat from a 95% furnace. A space heater only saves money when it lets you turn the whole-house thermostat down several degrees and heat just the room you're in. A heat pump delivers the same heat for about $19.46 a month.
| Heater | Per hour | 8 h/day, month | 24 h/day, month | Season (8 mo, 8 h) |
|---|---|---|---|---|
| 750 W | $0.10 | $24.07 | $72.22 | $193 |
| 900 W | $0.12 | $28.89 | $86.67 | $231 |
| 1,500 W | $0.20 | $48.15 | $144.45 | $385 |
1.5 kW × 8 h = 12 kWh a day; × 30.42 days = 365 kWh a month; × 13.19¢ (Utah average, Jan–Aug 2026, EIA) = $48.15.
Because resistance heat costs 3.7× as much as gas heat in Utah, a space heater saves money only if it lets you turn the whole-house thermostat down and heat just the room you're in. If your home heats with electric baseboards or furnace strips, a space heater costs the same per Btu — the saving comes only from heating fewer rooms.
The average Utah home used 777 kWh a month in 2025 (EIA); this heater adds 47% to that while it runs.
The full method, material data and tips are on the main space heater cost calculator page.