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veemjeem | 4 years ago

Sadly most popular window a/c units don't have true heat pump abilities. Usually the heating portion of window units use resistive heating.

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Siecje|4 years ago

Air Conditioners are heat pumps, a water pump moves water and a heat pump moves heat.

lsaferite|4 years ago

While technically correct that an AC _is_ a Heat Pump, the current commonly understood meaning of Heat Pump is a Bi-Directional Heat Pump while an AC is a Uni-directional Heat Pump (moving heat outside).