It will reach and maintain 60* when it's 7* out. I have a 24 x 24 x 10 pole barn. It has 2 builder grade insulated garage doors an entry door and a window. I would describe the insulation as decent and the structure is not exactly tight. The heater is a 25K BTU (20K net) radiant tube heater.
I went out to the garage the other night, is was 7* outside. The heat was on 55*. I punched the stat up to 60* and in 2 hours it reached 60 and turned off. It came back on shortly after, but I bet I could have reach 62 had I tried. I knowingly put a small heater in for various reasons, but I really didn't think it would make the 60's when it's in the single digits.
I went out to the garage the other night, is was 7* outside. The heat was on 55*. I punched the stat up to 60* and in 2 hours it reached 60 and turned off. It came back on shortly after, but I bet I could have reach 62 had I tried. I knowingly put a small heater in for various reasons, but I really didn't think it would make the 60's when it's in the single digits.
