There are multiple issues facing miners.
1) Miners become inefficient for generating profit quite quickly - making them obsolete.
2) Most miners are noisy.
3) Miners generate a lot of heat.
Innovation using immersion cooling is becoming more popular to reduce the noise but it also has the additional benefit in reducing running costs from fans.
https://www.youtube.com/watch?v=iykkSo75yDo
https://www.youtube.com/watch?v=J38GhUPGpKE
Dielectric coolants:
https://www.engineeredfluids.com/?gclid=EAIaIQobChMI3_K0kPmp3QIVRqmWCh21xQ7rEAAYASAAEgJmAvD_BwE
https://www.3m.com/3M/en_US/novec-us/applications/immersion-cooling/
(Non flammable coolants)
With the noise eliminated there is still heat - (much reduced by the efficiency of immersion cooling) - and there is still rapid obsolescence.
By utilizing the wasted heat energy in industry - some of the cost savings can be offset against the cost of running the miners.
Just some thoughts:
Heating homes and offices (Radiators or underfloor) Temperature of water in under floor heating system is 122.0 - 95 °F (35 - 50 °C)
Heating water used in hydroponics in cold climates 65 - 80 °F ( 18 - 27 °C )
Swimming pool heating 77 – 82 °F (25 – 28°C)
Heat for brewing. 68 to 72 °F (20 to 22 °C)
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Even if the mining by itself becomes inefficient - the cost savings of having the byproduct would make it efficient to remain mining.
Temperature could be controlled by over and under clocking.