It seems like they’d keep from being frozen because of creating heat for a house.
In: Technology
Air conditioner works by pumping heat from one radiator to another. During summer they pump heat from the inside radiator to the outside one. However some can reverse this and work in winter by pumping heat from the outside radiator to the inside and therefore heating up the house. The problem is that when they cool down the outside radiator it will condense water on this and when it is freezing this water will freeze clogging the radiator. So the air conditioner will stop working. They do often have sensors to detect this and will sometimes pump heat from the inside radiator to the outside radiator in order to clear the ice. But if it is too cold this does not work and you end up pumping more heat out then you are able to pump inn. And if it start freezing inside as well then they start having the same issues with ice on the inside radiator as they do on the outside radiator and everything just freezes up.
Another issue that some heat pumps have is that the gas they use to pump the heat turns into a liquid when it is too cold. Normally the heat pump work by boiling and condensing this liquid based on pressure but if it gets too cold then they are not able to create low enough pressures for the liquid to boil. When this happens the heat pump will just circulate liquid through its system and will end up bringing cold liquid to the inside radiator instead of hot gas like it is supposed to.
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