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[Technology Connections] My water heater is cooler than yours (www.youtube.com)
submitted 2 months ago by to c/technology@beehaw.org
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[–] 2 points 2 months ago* (last edited 2 months ago)

https://en.wikipedia.org/wiki/Ground_source_heat_pump

You can have both!

Also, see reverse flow heat exchangers

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