RIVER 2 Max › runs › Window AC (12,000 BTU)

Can an EcoFlow RIVER 2 Max run a window ac (12,000 btu)?

Q: Can the EcoFlow RIVER 2 Max run a window ac (12,000 btu)?

No. A window ac (12,000 btu) needs 1,100 W continuous and a 1,800 W startup surge, but the EcoFlow RIVER 2 Max only delivers 500 W continuous and a 1,000 W surge — so it can’t sustain the running load. You'd want a larger unit.

No — the EcoFlow RIVER 2 Max can't run a window ac (12,000 btu).
The window ac (12,000 btu) draws about 1,100 W running, with a 1,800 W startup surge; the RIVER 2 Max delivers 500 W continuous and 1,000 W surge. That's not enough continuous output.

1,100 WWindow AC (12,000 BTU) running

500 WRIVER 2 Max continuous

—runtime

512 WhRIVER 2 Max capacity

The check
Continuous: 500 W < 1,100 W needed → fails
Surge: 1,000 W < 1,800 W needed → fails

Units that do run a window ac (12,000 btu)

Goal Zero Yeti 1000 Core

983 Wh · 1,200 W cont

~1.1 h

EcoFlow DELTA 2

1,024 Wh · 1,800 W cont

~1.2 h

Anker SOLIX C1000

1,056 Wh · 1,800 W cont

~1.2 h

Jackery Explorer 1000 v2

1,070 Wh · 1,500 W cont

~1.3 h

Bluetti AC180

1,152 Wh · 1,800 W cont

~1.3 h

Jackery Explorer 1000 Plus

1,264 Wh · 2,000 W cont

~1.5 h

Goal Zero Yeti 1500X

1,516 Wh · 2,000 W cont

~1.8 h

Jackery Explorer 2000 Plus

2,042 Wh · 3,000 W cont

~2.4 h

EcoFlow DELTA 2 Max

2,048 Wh · 2,400 W cont

~2.4 h

Common questions

Can the EcoFlow RIVER 2 Max run a window ac (12,000 btu)?

No. A window ac (12,000 btu) needs 1,100 W continuous and a 1,800 W startup surge, but the EcoFlow RIVER 2 Max only delivers 500 W continuous and a 1,000 W surge — so it can’t sustain the running load. You'd want a larger unit.

Sources: Window AC (12,000 BTU) wattage — Standard appliance-wattage / generator-sizing charts (representative values; verify your nameplate); RIVER 2 Max specs — manufacturer published specifications (compiled 2026-06-15; 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.