He is using a heat pump, he is using the excess heat of the miners to pre-warm air used by the heat pump to heat his house. The miners offset some of the cost of the heat pump and pay for their own electricity use.
I'm pretty sure it would be more efficient to directly heat the air inside than the heat pump input, though. At most they can transfer exactly the added energy.
He also gets coins out of it? That at the moment could be worth more? There are several axis of 'cost' vs 'perf' vs 'utility' vs 'efficiency' that would need to be graphed out to see if it is actually worth this setup.
He is seeing cost as a major concern. Getting coins for a set amount of energy and using the extra heat as offset for his heating bill. So I could see if you did this right it could come out better. But that would need to be graphed out.
So this is a heat pump, it its taking heat from outside air, its just that in this case the outside air is first primed by running it via some cryptominers, which makes the heat pump work more efficiently.
> It doesnt just take warm air from outside and blow it into your house, otherwsie they would be useless in winter.
For sure. I'm not talking about the air but the heat. If the heat is generated by resistive heaters (his GPUs are mostly that) the heat pump may not have to work as hard to get enough heat but the total efficiency (including the GPUs) is not as good.
