> According to the company, the H1 replaces traditional resistive heating elements with processors that perform high-value computing tasks, including Bitcoin mining. The heat generated by those processors is captured and used to heat water, allowing the unit to deliver hot water while simultaneously earning Bitcoin.

There are also space heaters and pool heaters that reuse mining rig waste heat.

One vendor, Heatbit, sells space heater air filters that mine at 10-39 TH/s and return $100-350/yr, for from $399-$1249 + annual cost per kWh; /? heatbit https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...

One way to heat a pool on the roof with mining or datacenter or other waste heat, is to immerse the heat source in a chip-compatible nonconductive thermofluid and run the pool/spa/hot water through exchange loops.

FWIU, in order to run pool water through an attic to be heated, to prevent water damage you should have double-walled pipes and/or relief trays.

How much to upgrade the TH/s/kWh mining rigs; or, how does the return from mining change over time?

How does the annual cost compare?

Residential heat pumps have electric resistive heating elements to unfreeze the unit. Even natural gas heat pumps do.

How could heat from mining rigs be a source for a multi-source heat pump?

How could a pellet stove be a source for a multi-source heat pump?

How do the efficiencies of these systems compare to the efficiency of infrared wallpaper for heating, for example?