this post was submitted on 27 Aug 2023
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Oh OK! They're called reverse cycle air conditioners in Australia. I like that name because it better reflects what the system actually is.
A heat pump is just a device that moves heat from one place to another, using refrigerant. A bunch of things have heat pumps in them. Your fridge uses a heat pump (a fridge is really the same concept as an air conditioner - move the heat from inside the fridge to outside the fridge). You can get clothes dryers and water heaters that use heat pumps too.