Calculators
Air conditioner running cost comparison
Compare two AC units and annual electricity costs using their consumption, not cooling capacity alone.
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Compare suitably sized units under equivalent measurement conditions. BTU/h and tons describe cooling, not electricity use. Watt mode is an estimate; variable-speed AC does not draw constant power.
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Worked example
An example you can try or adapt to your own values.
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Result
2000 × 0.2 = 400; 1400 × 0.2 = 280