I was set on Radiant heat until I heard of all the draw backs, some stated above:
- need up to 18inches from ceiling or wall -i.e., take up a lot of space
- they heat what ever is in front of them - i.e., your head, your car roof....
- the heat doesn't reach ground level easily (can install a fan I guess)
- can be expensive
(Same with in-floor heating, but opposite problems - lots of pre-work and expense, takes long time to change temperature, heats up under cars mostly...)
I went with a MAXX forced air gas heater and it's awesome. it fits right up on the ceiling in the corner, blows the air across the garage, can be set with programmable thermostat...The floor is never really cold (and it gets really cold here) so I'm glad I didn't go with in-floor heat and I have lots of space for shelves, etc