this post was submitted on 14 Apr 2025
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[Moved to Piefed] Ask

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What's a stupidly expensive adult purchase that you now swear by that you would buy again in a heartbeat? (sopuli.xyz)
submitted 2 months ago by Blaze@sopuli.xyz to c/ask@lemm.ee
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[–] rbesfe@lemmy.ca 5 points 2 months ago

Modern geothermal heat pump systems are almost always closed loop, you just run a bunch of loops of tubing in a big trench that's deep enough to not freeze over the winter, or if you're space constrained you use a deep borehole or 2 with a tube running down and back up again.