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Re: Heating your shop/garage
As a HVAC tech I have serviced quite a few of these things, and in you case this maybe a very efficient way to keep the garage warm.
That is hydronic heating. You basically put a tap on the outlet line of your hot water heater, and another at the relief valve near the bottom of your tank. You use a recirc pump to move water, and a heat exchanger or radiator to give off the heat.
They have issues like recovery is quite slow, but once warm they will keep you place that way.
Use aqua pex for the water lines as copper has a tendency to get pin holes after 5-10 years.
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