I really like our harmon pellet stove. It has a remote thermostat and will Start and stop on its own. Low ash pellets are great. Our natural gas bill dropped from $350 to $50. And our electric bill is less as well. Had some reservation about the initial cost but no regrets now. We spend around $500 on pellets for the entire winter and the best part our old house in no longer cold. Probably the limitation is how big your shop is. Not sure how big a garage our harmon would heat, easily does house with no problem.
We have a good sized shop I bought a 350,000 btu used oil furnace for it. It takes up a lot of space, about like a small building and is pretty dirty. This is the harmon in our basement. Heats the basement and two stories easily.
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