Can a portable power station run a gas furnace?

Updated Oct 18, 2026

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Yes, a mid-size or large power station can run most gas furnaces, and it’s one of the smartest uses for one in a winter outage. The gas does the heating; electricity only runs the blower, igniter and controls. That’s usually 300–800 W while the blower runs, far less than the 1,500 W an electric space heater needs to warm a single room.

The catch is the connection: most furnaces are hardwired, so you can’t just plug them in. More on that below.

How much power does a gas furnace use?

Blower motor: the big one. Older single-speed (PSC) blowers draw about 400–800 W. Newer variable-speed (ECM) blowers often use 100–400 W.
Start-up: a single-speed blower can pull two to three times its running watts for a moment as it starts, so surge rating matters.
Igniter: a hot-surface igniter draws roughly 300–600 W for under a minute each heating cycle.
Controls and inducer fan: another 50–150 W while running.

The blower doesn’t run nonstop. On a cold night it might run about half the time. Check the motor label or your furnace manual for exact figures, or measure the circuit with a clamp meter.

Runtime by power station

This table assumes a conservative older blower (500 W running, 1,500 W to start) running half the time. A furnace with a variable-speed blower will last noticeably longer.

Gas furnace blower: 500 W running, 1,500 W start-up, ~50% duty cycle. Current models; “Borderline” means within 10% of the station’s rating.
Power station	Capacity	Runtime
EcoFlow DELTA Pro 3	4,096 Wh	13.9 h
EcoFlow DELTA Pro	3,600 Wh	12.2 h
BLUETTI Elite 200 V2	2,074 Wh	7.1 h
EcoFlow DELTA 2 Max	2,048 Wh	7.0 h
EcoFlow DELTA 3 Max	2,048 Wh	7.0 h
Jackery Explorer 2000 Plus	2,042 Wh	6.9 h
Jackery Explorer 2000 v2	2,042 Wh	6.9 h
Anker SOLIX S2000	2,010 Wh	6.8 h
BLUETTI AC180	1,152 Wh	3.9 h
Jackery Explorer 1000 v2	1,070 Wh	3.6 h
Anker SOLIX C1000	1,056 Wh	3.6 h
EcoFlow DELTA 3 Plus	1,024 Wh	3.5 h
Anker SOLIX C1000 Gen 2	1,024 Wh	3.5 h
Jackery Explorer 300	293 Wh	Can’t run it
BLUETTI Elite 30 V2	288 Wh	Can’t run it
EcoFlow RIVER 3 Plus	286 Wh	Can’t run it

A 2 kWh station keeps the heat on for most of a cold night. To get through a multi-day outage, run the furnace in blocks (heat the house, then let it coast), recharge with solar or a generator during the day, or choose a station that accepts extra batteries.

How to connect a furnace safely

Most furnaces are hardwired to a service switch, not plugged into an outlet. Your safe options:

Transfer switch or power inlet. An electrician installs an inlet box so you can feed the furnace circuit (and a few others) from a station or generator. This is the cleanest long-term setup.
Furnace plug kit. Some areas allow an electrician to replace the furnace’s hardwired connection with a plug and receptacle, so you can unplug it from the wall and plug it into the station during an outage. Rules vary by local code; ask an electrician.

Never “backfeed” your house by plugging a station or generator into a wall outlet with a double-male cord. It can electrocute utility workers and start fires.

If the furnace won’t light on battery

Some furnace control boards check for a bonded neutral and ground to sense the flame. Many portable power stations (like many inverter generators) have a “floating” neutral, so the furnace may try to light and then shut off. An electrician can confirm whether your furnace needs a neutral-ground bond and set up the connection correctly. All current models we cover output a pure sine wave, which furnace electronics need.

Other ways to stretch your battery in winter

Lower the thermostat a few degrees and close off unused rooms.
Sleep warm with an electric blanket, which draws a fraction of the power. See how long a power station runs an electric blanket.
Skip the space heater. At 1,500 W it drains a 2 kWh station in about an hour. Here’s why.

Never use a gas oven, grill, camp stove or generator to heat a home. They can produce deadly carbon monoxide. Keep a battery-powered CO alarm on every floor.

Our picks for running a furnace

These current stations have the output and surge to start a typical blower, plus enough capacity for a cold night. The DELTA Pro 3 can also connect to a home panel through EcoFlow’s own transfer hardware.

EcoFlow · Large

DELTA 3 Max

2,048Wh
2,400W out
44.8lb

2 kWh and 2,400 W in a lighter body than the DELTA 2 Max (44.8 lb), with 0–80% wall charging in about 68 minutes. It isn’t expandable; the Max Plus version is.

Maker’s list price: $700–$1,499

View on Amazon Details

BLUETTI · Large