Furnace fans · ALLPOWERS R4000
How Long Will an ALLPOWERS R4000 Run a Furnace Fan?
About 2.9 h for a 1/3 hp furnace fan (Honda figure, 1,000 W), by our math: 3,456 Wh × 0.85 ÷ 1,000 W. Across the cases below: 2.4 h to 4.2 h.
| Spec | ALLPOWERS R4000 |
|---|---|
| Battery | 3,456 Wh (maker spec) |
| Usable (× 0.85) | 2,938 Wh |
| Output / surge | 3,600 W / 6,000 W |
| Own draw | not listed |
| Solar input | 2,000 W |
| Price | $1,499 at ALLPOWERS |
Check R4000 price at ALLPOWERSPaid link
Furnace fan hours on the R4000
| Case | Watts | On the R4000 |
|---|---|---|
| 1/3 hp furnace fan (EWEB figure) (EWEB) | 700 W | 4.2 h |
| 1/3 hp furnace fan (Honda figure) (Honda) | 1,000 W | 2.9 h |
| 1/2 hp furnace fan (Honda) | 1,200 W | 2.4 h |
Wh × 0.85 ÷ (watts + the station’s own draw, where the maker lists it).
Hours are nonstop; the fan cycles with the thermostat, so real hours are longer.
Can the R4000 start it?
Honda lists 1,800 W to start a 1/3 hp furnace fan and 2,500 W for 1/2 hp (Honda); EWEB’s chart gives about 2,100 W for 1/3 hp (EWEB). The R4000 has a 6,000 W surge. 1/3 hp furnace fan (EWEB figure): covers it; 1/3 hp furnace fan (Honda figure): covers it; 1/2 hp furnace fan: covers it.
How much an hour takes
An hour of a 1/3 hp furnace fan (Honda figure) running nonstop uses about 1,000 Wh, about 34% of the R4000’s usable 2,938 Wh. At its 2,000 W solar input and our 75% assumption, strong sun puts about 1,500 Wh an hour back into the battery.
A furnace wired into the panel needs a transfer switch installed by a professional; never connect a backup to house wiring yourself.
Furnace fan on similar stations
| Station | Capacity | 1/3 hp furnace fan (Honda figure) | Price |
|---|---|---|---|
| Jackery HomePower 3000 | 3,072 Wh | 2.6 h | $1,349 |
| BLUETTI Apex 300 | 2,765 Wh | 2.3 h | $1,499 |
| BLUETTI Elite 200 V2 | 2,074 Wh | 1.7 h | $899 |
| EcoFlow DELTA 3 Max Plus | 2,048 Wh | 1.7 h | $1,199 |
Maker prices, Oct 26, 2026, unless dated. Checkout price applies.
More: ALLPOWERS R4000 specs and every runtime · Furnace fans on every station · calculator for your own devices.
Quick answers
How long will the ALLPOWERS R4000 run a furnace fan?
About 2.9 h for a 1/3 hp furnace fan (Honda figure, 1,000 W), by our math: 3,456 Wh × 0.85 ÷ 1,000 W.
Can the ALLPOWERS R4000 start a furnace fan?
Honda lists 1,800 W to start a 1/3 hp furnace fan and 2,500 W for 1/2 hp; EWEB’s chart gives about 2,100 W for 1/3 hp. The R4000 has a 6,000 W surge. 1/3 hp furnace fan (EWEB figure): covers it; 1/3 hp furnace fan (Honda figure): covers it; 1/2 hp furnace fan: covers it.
How long does the ALLPOWERS R4000 take to recharge with solar?
About 2.3 hours of strong sun from empty at its 2,000 W solar input, by our 75% assumption; clouds and winter sun add time.
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