My Dad has one of those that was installed in a 25x25 insulated end of the barn. The section described is seperated from the rest of the heated barn by a 8'h x 6'w walkway and the nearest gas fired hanging unit in that main barn blows away from the space where this heater is.
You would never know it, as this fella does a fine job even in MN winters. I bet it would do a nice job on any 2 car garage workspace.
GLWS.
