I don't know if it's a boosterism thing or just ignorance but all the articles I'm reading about soon-to-come domestic heat pumps that work down to -20°F seem to just completely ignore what Asian manufacturers like Mitsubishi, Daikin, Fujitsu etc. build right now. Today. As in now. And to be clear, I mean today. Like, right now. They exist now.
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@TechConnectify At such temperatures (apart from places with significant ground movement), why would anyone use a heatpump with cold end in air? It seems to me that digging a well for a ground heatpump would be very quickly cost-effective.
