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The hunt for the most efficient heat pump in the world
(arstechnica.com)
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this post was submitted on 03 Jul 2024
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"Heat pump" is just the latest buzz word. If you look up how they work its literally just a regular air conditioner with a switch to reverse the air flow.
Compressing refrigerant, allowing it to absorb thermal energy from inside the house, pumping that refrigerant to an outside coil where it releases that energy, then compressing again. This is air conditioning.
Not saying it's not useful or whatever. But it's not some incredible new technology. You could accomplish the same functionality by installing your window unit backwards.