Home / Heating & Cooling / Electric furnace
How many watts does an electric furnace use? (10,000 W)
An electric furnace uses about 10,000 W
Typical range 5,000–20,000 watts.
Typical range 5,000–20,000 watts.
Running cost calculator
Per hour—
Per day—
Per month—
Per year—
Energy/mo—
An electric furnace heats a whole home with resistance elements, drawing more power than almost any other appliance.
Electric furnace power specs
| Typical running power | 10,000 W |
| Typical range | 5,000–20,000 W |
| Energy use | 30.00 kWh/day · 900.0 kWh/mo |
What affects the wattage
- Model size, age and energy rating.
- Settings and how hard it works (heat, speed, load).
- How many hours a day you run it.
Running cost at $0.17/kWh
| Electricity rate | Per day | Per month | Per year |
|---|---|---|---|
| $0.10/kWh | $3.00 | $90.00 | $1,095.00 |
| $0.15/kWh | $4.50 | $135.00 | $1,642.50 |
| $0.20/kWh | $6.00 | $180.00 | $2,190.00 |
| $0.25/kWh | $7.50 | $225.00 | $2,737.50 |
| $0.30/kWh | $9.00 | $270.00 | $3,285.00 |
| $0.40/kWh | $12.00 | $360.00 | $4,380.00 |
See the full breakdown of what it costs to run an electric furnace, or what size power station runs an electric furnace.
FAQ
How many watts does an electric furnace use?
Whole-home electric furnaces commonly draw 5,000-20,000 watts while heating.
Is an electric furnace cheap to run?
No - a heat pump delivers far more heat per watt and usually costs much less.
More in Heating & Cooling