this post was submitted on 10 Feb 2026
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I've thought about that, actually. Could you use waste heat from a datacenter to, say, heat water for a laundromat or something?
We're currently using waste heat in Denmark from data centres (and other industry including power plants, CHP - Combined Heat & Power) in district heating. Heat up the water and pump it down pipes to people's homes.
My home is for example heated up primarily by a cement factory, a CHP plant, and a waste incinerator.
You would think a laundromat would use waste heat from the dryers to heat their wash water (or even the room) but I've never seen that.
That waste heat is very humid, which causes corrosion and mold issues.
I didn't mean to dump it directly into the indoor airflow.
Clearly dryer exhaust needs yo go through a heat exchanger to recover the heat for other uses.