How Many Amps Does a 36,000 BTU Air Conditioner Use?

Answer
13.6 A at 240 V · 3,273 W

Running watts ≈ BTU ÷ EER. With a typical EER of 11, a 36,000 BTU unit uses about 3,273 W, which is 13.6 A at 240 V. Starting current is 2–3× higher for a moment on units without an inverter compressor.

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1.0 for heaters and lights; 0.8–0.9 for motors.
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    For estimating and educational purposes only. Results are approximate and are not a substitute for a licensed professional, the manufacturer's instructions or your local code. Disclaimer

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    36,000 BTU air conditioner electrical data

    Value
    Cooling capacity36,000 BTU/h (3.00 ton)
    Running power (EER 11)3,273 W
    Amps at 120 V27.3 A
    Amps at 240 V13.6 A
    Typical circuit20 A, 240 V
    Energy per 8 h26.2 kWh

    Check the nameplate: it lists the rated amps (RLA) and the maximum breaker (MOCP). Inverter mini-splits use less at partial load.

    Frequently asked questions

    Can a 36,000 BTU air conditioner run on a 15 amp circuit?

    No. It needs a 240 V circuit, typically 20 A.

    What size generator for a 36,000 BTU air conditioner?

    At least 8,500 starting watts, or less with a soft starter or inverter unit.

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