Yes — the Bluetti AC240 runs 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 AC240 delivers 2,400 W continuous and 3,600 W surge.
Its 1,536 Wh battery runs one for about 1.8 h.
Can the Bluetti AC240 run a window ac (12,000 btu)?
Yes. A window ac (12,000 btu) draws about 1,100 W with a 1,800 W startup surge, and the Bluetti AC240 delivers 2,400 W continuously with a 3,600 W surge rating — comfortably enough. On its 1,536 Wh battery it runs one for roughly 1.8 h (the load cycles ~70% of the time, so it lasts longer than raw watts suggest).
Sources: Window AC (12,000 BTU) wattage — Standard appliance-wattage / generator-sizing charts (representative values; verify your nameplate); AC240 specs — manufacturer published specifications (compiled 2026-08-10; 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.