And keep in mind, even for bitcoin, some of the work is useful, since the computer chips it uses will heat up, and that has value for HVAC. It’s certainly not a

And keep in mind, even for bitcoin, some of the work is useful, since the computer chips it uses will heat up, and that has value for HVAC. It’s certainly not as cheap per unit of heating as you can get with equipment built for that purpose, but there is still a positive value c there.