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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.
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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 an electric furnace's wattage
An electric furnace is rated around 10,000 W, but the real figure shifts with a few things:
- Model and rating: An electric furnace ranges from about 5,000 W on efficient units to 20,000 W on larger or older ones — a spread of ~15,000 W.
- Usage: the real draw depends on room size, target temperature and how hard the unit works.
- Run time: because an electric furnace typically runs about 3 h/day, hours of use matter as much as raw wattage on your bill.
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.
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