How Many Watts Does a Furnace Blower Use?
Verified July 2026 Manufacturer + DOE typical ratings. Methodology
Gas Furnace Blower wattage by type
| Component | Running watts | Start surge |
|---|---|---|
| PSC blower motor (older) | 500-700W | 1,500W |
| ECM variable-speed (newer) | 300-500W | 1,000W |
| Igniter + controls | 50-100W | - |
| Total plan-around | 550W | 1,500W |
In a winter outage, 500W of blower keeps a whole house at 68°F while 1,500W of space heater warms one room - the gas is doing the real work. At a 40% winter duty cycle the blower uses ~235Wh per hour, so a 2kWh station heats your home about 8.5 hours and a 4kWh unit runs overnight and beyond. One wiring note: furnaces are hardwired, so you'll need an electrician to add a furnace transfer switch or interlock plug (typically $150-400) - do it before the ice storm, not during.
How long real power stations run a gas furnace blower
Computed from each unit's rated capacity at 85% inverter efficiency and a 40% duty cycle (500W running, 1,500W start). Units that can't clear the start surge are excluded.
| Power station | Capacity | Estimated runtime | Price | |
|---|---|---|---|---|
| EcoFlow Delta Pro Ultra Longest | 6,144 Wh | 26.1 hours | $5,799 | Check price → |
| EcoFlow Delta Pro 3 | 4,096 Wh | 17.4 hours | $3,699 | Check price → |
| Anker SOLIX F3800 Plus | 3,840 Wh | 16.3 hours | $4,799 | Check price → |
| Bluetti Elite 200 v2 | 2,073 Wh | 8.8 hours | $1,699 | Check price → |
| Jackery Explorer 2000 v2 | 2,042 Wh | 8.7 hours | $1,499 | Check price → |
| Anker SOLIX C1000 | 1,056 Wh | 4.5 hours | $999 | Check price → |
| EcoFlow Delta 3 Plus | 1,024 Wh | 4.4 hours | $799 | Check price → |
| Bluetti AC70 | 768 Wh | 3.3 hours | $649 | Check price → |
⚡ Backing up more than a gas furnace blower?
Add your other appliances and outage length — our calculator sizes the whole load and shows exactly which units fit.
Size my full backup →Frequently asked questions
How long will a 2,000Wh power station run a gas furnace?
At a 40% duty cycle (thermostat cycling in cold weather), about 8.5 hours. Overnight backup comfortably fits in the 4kWh class.
Can I just plug my furnace into a power station?
Not directly - furnaces are hardwired. An electrician can install a furnace plug/transfer switch for $150-400, after which backup is literally plug-in.
Does this work for heat pumps too?
No - heat pumps heat with electricity itself (2,000-5,000W+), not gas. Backing up a heat pump requires the 240V whole-home class like the Delta Pro Ultra or an installed battery.
Keep reading
- Full comparison database — every spec, side by side
- Best-for guides — ranked picks by use case
- 2026 state incentives — what still pays after the federal credit