Electricity cost · space heater
A 1,500 W space heater used about 8 hours a day costs roughly $2.28 per day, $22.80 a month, or $273.60 a year at the $0.19/kWh US average rate — and uses about 12 kWh a day. These are indicative figures; adjust the wattage, hours, and your $/kWh below for your own home.
Typical wattages & rates indicative, as of — use your bill's $/kWh
Running a typical 1,500 W space heater about 8 hours a day costs roughly $2.28 a day, $22.80 a month, and $273.60 a year at the $0.19/kWh US average — about 12 kWh a day. Electric space heaters are power-hungry — a typical 1,500 W unit pulls a steady 1.5 kW whenever it's on, so a few hours a day adds up fast over a heating season.
These are indicative figures, not a bill. Your real cost depends on the unit's actual wattage, how long you run it, and your local rate. Enter your own watts and the $/kWh from your bill in the calculator above for an accurate estimate. Cycling appliances don't run at full power continuously.
Indicative: typical 1,500 W × 8 h/day at the $0.19/kWh US residential benchmark published for 2026-04. Appliance preset reviewed 2026-06. Use your bill for accuracy.
A single default cannot represent every home. These three profiles keep the same $0.19/kWh planning rate while changing the usage pattern that matters for this appliance.
| Profile | Assumption | Average month | Annual cost | Annual energy |
|---|---|---|---|---|
| Occasional spot heat One room for a short cold spell | 1,500 W × 2 h/day × 90 days/year | $4.28 | $51.30 | 270 kWh |
| Daily winter use A workday or evening through one season | 1,500 W × 8 h/day × 120 days/year | $22.80 | $273.60 | 1,440 kWh |
| Heavy seasonal use Long daily operation in a colder climate | 1,500 W × 12 h/day × 150 days/year | $42.75 | $513.00 | 2,700 kWh |
Most plug-in resistance heaters state 1,500 W on high, but lower thermostat or power settings change the average. A plug-in energy meter can capture real cycling over a representative cold day.
Compare the seasonal total with the cost of heating the same occupied area using the home's main system. A space heater can be economical for one closed room, yet expensive when it substitutes for whole-home heat for many hours.
Indicatively, a typical 1,500 W space heater run about 8 hours a day costs roughly $2.28 per day, $22.80 per month, and $273.60 per year at the US-average rate of $0.19/kWh, using about 12 kWh a day (1440 kWh a year). Electric space heaters are power-hungry — a typical 1,500 W unit pulls a steady 1.5 kW whenever it's on, so a few hours a day adds up fast over a heating season. These are indicative figures — your real cost depends on the unit's actual wattage, how long you run it, and your own electricity rate.
At a typical 1,500 W and 8 hours of use a day, it draws about 12 kWh per day — roughly 1440 kWh over a year on the default schedule. Seasonal — defaulted to ~120 cold-weather days a year. Multiply the kWh by your own $/kWh to get your cost.
The two levers are running it less (fewer hours or, for seasonal items, fewer days) and paying less per kWh. Using the appliance during off-peak hours can help if you're on a time-of-use plan, and a more efficient model lowers the wattage. The single most accurate thing you can do is enter your real wattage and your bill's $/kWh in the calculator above.
Source links and page assumptions reviewed .
Indicative estimate only. The 1,500 W figure is a typical indicative value, not a spec for your specific space heater, and $0.19/kWh is an indicative US average, not your tariff. Real cost varies widely by model, efficiency, usage, and your local rate and plan. For an accurate figure, use the wattage on your appliance and the $/kWh on your electricity bill. Appliance presets reviewed 2026-06; rate benchmark published for 2026-04.