Appliances › Heating & Cooling
What size power station runs a space heater (1500 w)?
Honestly: a battery is poor for resistive heat. Expect roughly Wh ÷ 1500 hours of run time.
1,500 Wrunning watts
—startup surge
100%duty cycle
6,667 Whfor 4.0 h
Need to run it alongside other things? Add it to the full sizing tool with the rest of your load.
What size you need for 4.0 h
This is a big load — about 6,667 Wh over 4.0 h. No single portable battery holds that much, but the expandable systems below meet the power draw (1,500 W running, 1,500 W surge) — add a battery module to reach the full watt-hours. This is the expandable-system territory most partial- and whole-home backup lives in.
The math
Running watts (everything on at once) = 1,500 W
Surge watts (worst single startup + the rest running) = 1,500 W
Average draw (cyclic loads counted by their duty cycle) = 1,500 W
Watt-hours = 1,500 W × 4.0 h ÷ 90% usable reserve = 6,667 Wh
1
Zendure SuperBase V6400best expandable match
6,438 Wh 3,800 W cont · 5,000 W surge expandable ~3.9 h on this load $$$
First Zendure entry — a 6.4 kWh, 3,800 W whole-home-class unit on semi-solid-state cells (3,000+ cycles), expandable to 64 kWh with satellite battery packs.
Semi-solid-state LiFePO4 · ~2 h to full at 3,600 W AC input; up to 3,000 W solar · 130 lb
2
EcoFlow DELTA Pro Ultra
6,144 Wh 7,200 W cont · 10,800 W surge expandable ~3.7 h on this load $$$
EcoFlow's flagship whole-home system above the DELTA Pro and DELTA Pro 3 — base unit is inverter (70 lb) + battery (111.8 lb), expandable to 30 kWh with one inverter stack and 90 kWh with three.
LiFePO4 · 8,800 W combined AC+solar fast charge (two batteries full in ~2 h); 5.6 kW max solar input · 182 lb
3
Jackery Explorer 5000 Plus
5,040 Wh 7,200 W cont · 14,400 W surge expandable ~3.0 h on this load $$$
The largest single Jackery unit — 120/240V split-phase output makes it a real panel-level whole-home contender, not just a big portable.
LiFePO4 · True 120V/240V split-phase output; expandable to 60 kWh with additional battery packs and units · 135 lb
4
EcoFlow DELTA Pro 3
4,096 Wh 4,000 W cont · 8,000 W surge expandable ~2.5 h on this load $$$
A 4 kWh, 4,000 W (120/240 V) system built specifically for whole-home backup.
LiFePO4 · AC/solar/EV; expandable to 48 kWh · 113 lb
5
Goal Zero Yeti PRO 4000
3,993 Wh 3,600 W cont · 7,200 W surge expandable ~2.4 h on this load $$$
Goal Zero’s LiFePO4 flagship — 4 kWh, 3,600 W, whole-home with the transfer switch and tanks.
LiFePO4 · Fast AC; expandable to ~27 kWh · 104 lb
6
Anker SOLIX F3800
3,840 Wh 6,000 W cont · 9,000 W surge expandable ~2.3 h on this load $$$
A 6,000 W, 240 V system for whole-home backup including a well pump and electric range, expandable to ~27 kWh.
LiFePO4 · 120/240 V; expandable to 26.9 kWh · 132 lb
🔗 The "Check price" buttons are brand-direct affiliate links. We earn a commission when you buy through one — at no extra cost to you, and it never changes which unit we recommend.
Disclosure.
⚡ Duty cycle matters here. Resistive heat is the single most demanding common load — 1,500 W continuous drains any battery fast. We size watt-hours on the duty-weighted average (1,500 W), not the peak — so we don't oversell you capacity.
Can a specific unit run a space heater (1500 w)?
41 of the units we track deliver enough watts to run a space heater (1500 w). Check a specific one for the runtime and the full verdict:
Bluetti Pioneer Na
900 Wh · 1,500 W contruns it
Goal Zero Yeti 1000X
983 Wh · 1,500 W contruns it
EcoFlow DELTA 2
1,024 Wh · 1,800 W contruns it
EcoFlow DELTA 3 Plus
1,024 Wh · 1,800 W contruns it
Bluetti Elite 100 V2
1,024 Wh · 1,800 W contruns it
Anker SOLIX C1000 Gen 2
1,024 Wh · 2,000 W contruns it
Anker SOLIX C1000
1,056 Wh · 1,800 W contruns it
Jackery Explorer 1000 v2
1,070 Wh · 1,500 W contruns it
Bluetti AC180
1,152 Wh · 1,800 W contruns it
Anker SOLIX F1200 (PowerHouse 757)
1,229 Wh · 1,500 W contruns it
Jackery Explorer 1000 Plus
1,264 Wh · 2,000 W contruns it
Goal Zero Yeti 1500X
1,516 Wh · 2,000 W contruns it
Common questions
What size power station do I need to run a space heater (1500 w)?
A space heater (1500 w) draws about 1,500 W running (a resistive load, so no real startup surge). So you want a unit with at least 1,500 W continuous output. For 4.0 h of runtime that's roughly 6,667 Wh of capacity — the Zendure SuperBase V6400 is the smallest unit that clears all of it.
How many watts does a space heater (1500 w) use?
About 1,500 W while running. Resistive heat is the single most demanding common load — 1,500 W continuous drains any battery fast.
Sources: Space Heater (1500 W) wattage — Standard appliance-wattage / generator-sizing charts (representative values; verify your nameplate); station specs — manufacturer published specifications (compiled 2026-10-05; approximate). Informational only — a computed sizing estimate from published appliance-wattage charts and manufacturer station specs. It is not an electrical guarantee. For hardwired or whole-home backup, transfer switches, or any permanent install, consult a licensed electrician.