In floor Radiant Heat also works very well with solar panels on the roof to heat the water...pay back is pretty quick!
The only down side to radiant in floor is you have to leave the heat turned on even when not using the shop as it can take a day or two to bring the slab up to temperature. This isn't an issue for a business, but could be for the hobby shop...
I have propane Infrared Heat in my shop and like it a lot, very efficient...I only turn it on when I open up on a cold morning...let it run as needed for a few hours to bring the temp up to 60* and turn it off for the rest of the day. It heats objects that then heat the air, so opening and closing the big shop doors has very little effect on comfort. The down side is you need high ceilings (16' ) due to the clearance issues...units I have need to be 3" away from the ceiling , so the hang at 13' AFF.
Mike B
