If your furnace is toasted and it was heating your home on a hydronic system don't buy another furnace, simply replace it with an S19 #Bitcoin miner and dielectric oil, you will heat your home and earn bitcoin at the same time, 2 birds one stone.

The system is a bit complex so don't do yourself, get a professional who understand these stuff.

You may need one or two S9 miners, depend on the size of your house(the professional can estimate).

The miner will heat the oil making a heat source and the water will calculate through the oil just like it would do with the furnace.