this post was submitted on 27 Jul 2023
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Technically, but they're only one way.
The ones sold as "heat pumps" can operate both directions-- cool the outside world/heat your home in winter.
Huh. I had wondered whether air conditioners could be made reversible. Neat.
Another commenter claims all you need is one more valve. I suspect the design changes are slightly more involved than that, but in principle it's certainly doable.
I would rather cool the outside world in the summer.