Can a Power Station Run a Space Heater?
Yes, but not for long. A 1,500 W space heater drains a 2 kWh station in about an hour. Here is the math, and better ways to stay warm.
Any station with 1,500 W or more of output can run a standard space heater. Battery capacity is the problem: heat takes a lot of energy. Even a 5 kWh station runs a heater on high for under 3 hours. Use it to take the chill off one small room, not to heat a house.
Runtime by power station
| Power station | Capacity | High (1,500 W) | Low (750 W) | Cycling on low (400 W avg) |
|---|---|---|---|---|
| Anker SOLIX C1000 Gen 2 | 1,024 Wh | 0.6 hours | 1.2 hours | 2.2 hours |
| Bluetti Elite 200 V2 | 2,073 Wh | 1.2 hours | 2.3 hours | 4.4 hours |
| EcoFlow DELTA 3 Ultra Plus | 3,072 Wh | 1.7 hours | 3.5 hours | 6.5 hours |
| Anker SOLIX F3800 Plus | 3,840 Wh | 2.2 hours | 4.4 hours | 8.2 hours |
| Jackery Explorer 5000 Plus | 5,040 Wh | 2.9 hours | 5.7 hours | 11 hours |
| EcoFlow DELTA Pro Ultra | 6,144 Wh | 3.5 hours | 7.0 hours | 13 hours |
A heater on a thermostat cycles on and off, so in a small, closed room the average can drop well below its rating. The last column assumes the heater runs about half the time on low.
Better ways to stay warm
- Run the furnace fan instead. A gas furnace needs only a few hundred watts for its blower and controls. A 240V or high-output station connected through a transfer switch can keep the whole house heated far longer than a space heater can. Our load calculator includes a furnace fan.
- Use an electric blanket or heated pad. They use 50 to 100 W and warm the person, not the room. A 2 kWh station runs one all night.
- Pick one room. Close doors, hang blankets over windows, and gather everyone in the smallest room.
- Never use a gas generator, grill or camp stove indoors for heat. Carbon monoxide kills people in winter outages every year.
If you must run a heater
- Set it to low (usually 750 W) and use the thermostat.
- Plug it straight into the station. Heaters and extension cords are a fire risk.
- Check the station's continuous output covers the heater with room for anything else running.
- EcoFlow's X-Boost can run heaters above the station's rated output by lowering voltage. The heater runs cooler, but the battery still drains fast.
Bottom line
A power station is great for keeping the furnace blower, fridge and lights on. It is a poor heat source on its own. For long winter outages, see our generator vs power station guide.
Specs and prices come from manufacturer listings and published reviews. We have not lab-tested these units. Prices change often, so check the current price before you buy.