As woodturner pointed out, you could use a water heater based system with a circulation pump, pex hose and an automotive as coil with a fan to heat your shop. The water heater would be located outside or in the other garage. Watts to BTU = watts X 3.41, so a 3000 watt water heater would produce 10230 btu. This type system use to be quite common when electricity costs were cheaper and are still used in buildings with explosive materials, like gunpowder. My houseboat had a heater that used engine cooling water and a truck heater unit!
capncarl
capncarl
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