Turning a $150 AC into a Super-Efficient Geothermal Unit [video]

2 znpy 1 8/26/2025, 12:04:15 PM youtube.com ↗

Comments (1)

ZeroGravitas · 2h ago
The bit about using graphite mixed in mud for thermal conductivity is interesting.

I'm surprised there's no high tech startup that burrows PEX tubing underground with tiny robot tunnel boring machines for these purposes.