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Need a TLDW
Air conditioners are Heatpumps without a valve to reverse the direction of cooling/heating. If you flip an air conditioner around, it will produce heat at about 3 to 4x greater efficiency compared to an electric resistance heater.
Most modern ACs have heating available as a function, so no need to flip it.
Oddly, I’ve never seen a reversible window AC in my area. Checking my local stores, they’re definitely a bit more expensive than the non-heating models (cheapest I could find was $489), which might explain it.
what I would need to know now is how the efficacy is compared to heating water for the heaters with natural gas…
