Your Garage Heating System
... got a nice 75,000 BTU gas heater off Craig's List .
OK, please check it out carefully. If it's used, make sure someone checks it for heat exchanger cracks
I don't know your shop situation, but if you use ANY paint/ flammable chemical products, you need to be careful of several things
First and most important is whether the burner has a SEALED combustion chamber, and a separate combustion air inlet from the outside.
Second, if you have any sort of ventilating / exhaust fan in the garage, which can form a slight vacuum in the area, this may negatively affect the vent system of your heater. If this is new or just a few years old, it should have a spill switch or pressure switch or other "safety" that trips when the vent is improper. While this is fairly safe, it does not prevent nuisance trips and loss of heat.
The older, so called "atmospheric burners" are particularly troublesome.
It's been a number of years since I was in this business, but I have seen a LOT of troubles in this area.
PM me if I can help, I sure wish you luck.
