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Noobmoob t1_jc6qkw2 wrote

I wonder if they got the idea from Linus Tech Tips?

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omniplatypus t1_jc6rra6 wrote

This idea has been around in the HVAC world for a while

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danielv123 t1_jc7a4qj wrote

Yep. My city has a central heat system. Among other things, cooling for the ice rink is used to heat the swimming hall and sidewalks downtown.

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