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How Many Watts Does a 12,000 BTU Air Conditioner Use?
Real wattage for inverter and non-inverter 12,000 BTU units, plus monthly cost calculations.
By เจิดพงษ์ มากกูล1 min read
A 12,000 BTU split-type air conditioner draws roughly 950–1,200 watts at full load. Inverter models average about 700–900 watts over a typical hour because they slow down once the room is cool.
The simple formula
Real-world cost (Inverter, 4.4 THB/kWh)
Non-Inverter difference
A non-inverter 12,000 BTU runs near full draw (1,100 W) the entire time. Same 8-hour use ≈ 1.1 × 8 × 4.4 = 39 THB/night, or about 1,170 THB/month — roughly 30% higher.
Three quick savings for 12,000 BTU
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