Best Power Station for a Gas Furnace
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Top picks at a glance
Best 7,200 W furnace boxJackery HomePower 3000Check price on Amazon
Best 3,600 W furnace boxEcoFlow DELTA 3 Ultra PlusCheck price on Amazon
Best 2,400 W furnace boxEcoFlow DELTA 2 MaxCheck price on Amazon
A gas furnace keeps the house warm only while its blower and controls have power, and the Jackery HomePower 3000 answers that with 3,600 W and a 7,200 W surge. The EcoFlow DELTA 3 Ultra Plus gives the same output and surge, with room to expand. The EcoFlow DELTA 2 Max covers the same job with 2,400 W and a 4,800 W surge.
This guide checks the three stations against the makers’ published specs, current in November 2026. PowerPicked Editorial has not used any of the three stations itself.
Wh counts stored energy. One watt-hour is written Wh. Power is tallied in watts. One watt is written W. AC output is the plug-in power for the furnace. Solar input sets how much panel power comes in. UPS is the fast switch to battery when the power drops.
Jackery HomePower 3000
- Capacity
- 3,072 Wh
- AC output
- 3,600 W
- Solar input
- 1,000 W
- Weight
- 59.52 lb
Who it's for: Home backup buyers who want 3 kWh and a 30 A outlet without adding battery packs.
Strengths
- 3,072 Wh at 59.52 lb
- 3,600 W output, 7,200 W surge
- 30 A outlet rated 3,600 W
Weaknesses
- Can't add expansion batteries
- AC charging takes 2.2 hours
- Bypass mode limited to 1,440 W
How long does the HomePower 3000 run?
Count the runtime numbers below from 85% of the listed capacity, assumed. Eighty-five percent of 3,072 Wh works out to 2,611.2 Wh of usable energy. A 100 W load runs about 26.1 hours on that amount. Each pound carries about 51.6 Wh: 3,072 Wh over 59.52 lb.
Its output is 3,600 W, with a 7,200 W surge. UPS switchover is within 20 ms. No expansion batteries work with it. The HomePower 3000 review covers the full spec read.
EcoFlow DELTA 3 Ultra Plus
- Capacity
- 3,072 Wh
- AC output
- 3,600 W
- Solar input
- 1,600 W
- Weight
- 74.3 lb
Who it's for: Home backup buyers who want about 3 kWh and 3,600 W in one unit that can grow to 11 kWh.
Strengths
- 3,600 W output with a 7,200 W surge rating
- 1,600 W solar input
- Listed at 25 dB or less at 600 W
Weaknesses
- Heavy at about 74.3 lb
- Full 5-year warranty needs app registration
How many hours does the DELTA 3 Ultra Plus run?
Assume 85% of the listed capacity in the runtime figures below. Take 85% of 3,072 Wh and the usable figure is 2,611.2 Wh. A 100 W load draws for about 26.1 hours on that amount. Each pound carries about 41.3 Wh: 3,072 Wh over 74.3 lb.
It runs at 3,600 W, with a 7,200 W surge. Resistive appliances run up to 4,600 W on X-Boost. UPS switchover takes under 10 ms. Extra batteries take it from 3 to 11 kWh. The DELTA 3 Ultra Plus review has the full spec read.
EcoFlow DELTA 2 Max
- Capacity
- 2,048 Wh
- AC output
- 2,400 W
- Solar input
- 1,000 W
- Weight
- 50 lb
Who it's for: Home backup and RV owners who want about 2 kWh now and room to grow to 6 kWh with extra batteries.
Strengths
- Expands to 6,144 Wh with two extra batteries
- 1,000 W solar input across two ports
- 2,400 W output, 3,400 W with X-Boost
Weaknesses
- Heavy at 50 lb
- UPS switchover time isn't listed
How many hours does the DELTA 2 Max run?
For the runtime numbers below, work from an assumed 85% of the listed capacity. Eighty-five percent of 2,048 Wh works out to 1,740.8 Wh of usable energy. A 100 W load draws for about 17.4 hours from that amount. 50 lb carries 2,048 Wh, about 41.0 Wh per pound.
It puts out 2,400 W, with a 4,800 W surge. X-Boost lifts devices to 3,400 W. Two extra batteries lift it to 6,144 Wh. UPS switchover time is not listed for it. A five-year warranty covers it. Read the DELTA 2 Max review.
How do the three compare?
| HomePower 3000 | DELTA 3 Ultra Plus | DELTA 2 Max | |
|---|---|---|---|
| Capacity | 3,072 Wh | 3,072 Wh | 2,048 Wh |
| AC output | 3,600 W | 3,600 W | 2,400 W |
| Surge | 7,200 W | 7,200 W | 4,800 W |
| UPS | 20 ms | under 10 ms | not listed |
| Expansion | none | 3 to 11 kWh | up to 6,144 Wh |
How to choose
Start with the surge your furnace’s blower needs. A licensed electrician should handle any hard-wired hookup. Read the furnace’s nameplate, then compare its rated and surge numbers with each station’s. Capacity sets how long the furnace runs between refills.
FAQ
Which one leads on surge?
Both the HomePower 3000 and the DELTA 3 Ultra Plus list a 7,200 W surge. The DELTA 2 Max lists a 4,800 W surge.
Which one puts out the highest?
Both the HomePower 3000 and the DELTA 3 Ultra Plus put out 3,600 W. The DELTA 2 Max gives 2,400 W.
Which one expands the most?
The DELTA 3 Ultra Plus grows from 3 to 11 kWh. The DELTA 2 Max grows to 6,144 Wh. The HomePower 3000 takes no expansion batteries.
Can I wire one straight into my furnace?
Any hard-wired hookup belongs with a licensed electrician. A furnace that plugs in can run from any of the three, as long as its nameplate numbers fit the station’s rated output and surge.
Sources
- Jackery: HomePower 3000 product page
- EcoFlow: DELTA 3 Ultra Plus product page
- EcoFlow: DELTA 2 Max product page
