How Long Will It Run

How long will a Goal Zero Yeti 1000 run a gas furnace?

About 2.3 hours — 2 h 20 min typically, from 2 h 11 min in the worst case to 2 h 28 min at best. That assumes a gas furnace pulling 600 W for 50% of the time (average 300 W), plus the station's 11 W AC mains socket overhead — 311 W in total out of 725 usable watt-hours.

The gas makes the heat, but the blower that pushes warm air through the ducts is a real motor with a real start-up surge — far more than a British combi boiler. Variable-speed (ECM) blowers usually draw less.

Before you rely on it

A furnace blower is a real motor with a start-up surge, and most furnaces are hard-wired with no plug. Some will not light on a station's floating output because they sense the flame through ground. The furnace guide explains all three problems and the safe way to connect one.

The numbers

Goal Zero Yeti 1000 · 998 Wh · new pack at 20 °C, 10% reserve
SetupAverage drawCautiousTypicalBest case
1 × gas furnace, UK 230 V311 W2 h 11 min2 h 20 min2 h 28 min
2 × gas furnace, UK 230 V611 W1 h 7 min1 h 11 min1 h 16 min
1 × gas furnace, US 120 V311 W2 h 11 min2 h 20 min2 h 28 min
  • 0.3 nights of eight hours, or 0.1 days of continuous running.
  • Usable energy: 725 Wh of the 998 Wh on the box, after chemistry, inverter losses and the reserve.
  • To keep it going for a full 24 hours you would need about 10,270 Wh of rated capacity — 10.3× this station.
  • Start-up: the gas furnace asks for 1,500 W at switch-on against this station's 3,600 W peak — comfortable.

Buy the Goal Zero Yeti 1000

Where to buy

Amazon and approved-programme links are affiliate links; the site may earn a commission at no extra cost to you. Links marked “official site” are untracked. Prices and stock change constantly — check before you buy.

If this is for a power cut

Heating is what a battery does worst. In a power cut, warming people rather than rooms goes much further, and none of this needs a socket.

Without a power station: a 20,000 mAh power bank runs a USB heated throw for about 7 h 24 min. See the power bank numbers.

Hot water bottle and a vacuum flask. Boil water while you still can, keep it hot in a flask, and refill the bottle through the night.

Look for: A bottle made to BS 1970 in the UK, and a flask of a litre or more.

Hand warmers. Air-activated packs give hours of heat with no power at all, and a pocketful helps children and older relatives.

Look for: Long-duration packs, and the expiry date on bulk boxes.

Battery carbon monoxide alarm. Anything burning fuel indoors, a boiler relit after an outage included, can produce carbon monoxide you cannot see or smell.

Look for: A sealed long-life battery and EN 50291 certification in the UK (UL 2034 in the US).

Amazon links are affiliate searches for a type of product, not endorsements of a model; the site may earn a commission at no extra cost to you.

More: How to keep warm in a power cut, and the power cut essentials list (US edition).

What changes the answer

If instead…Typical runtimeChange
The pack is two years old2 h 9 min-8%
The pack is five years old1 h 52 min-20%
It is −10 °C outside1 h 59 min-15%
You run it flat, no reserve2 h 35 min+11%
You keep 20% back2 h 4 min-11%

If you need it to run longer

These run a gas furnace for at least twice as long as the Goal Zero Yeti 1000 does, cheapest first.

StationWhTypicalIndicative price
Jackery Explorer 2000 v22,0424 h 44 min£849 / $999
OUKITEL BP20002,0484 h 46 min£1,099 / $1,199
EcoFlow DELTA 2 Max2,0484 h 44 min£1,199 / $1,399
EcoFlow DELTA 3 Max2,0484 h 46 min£1,199 / $1,499

The cheapest step up: Jackery Explorer 2000 v2

Amazon and approved-programme links are affiliate links; the site may earn a commission at no extra cost to you. Links marked “official site” are untracked. Prices and stock change constantly — check before you buy.

Smaller options that still work

StationWhTypicalWeightIndicative price
EcoFlow RIVER 2 Pro7681 h 48 min7.8 kg£499 / $549
Bluetti AC707681 h 48 min10.2 kg£449 / $359
Anker SOLIX C800 Plus7681 h 48 min10.7 kg—
Jackery Explorer 600 Plus6321 h 29 min7.3 kg—