so you are gong to make the unit inlet(return)tee mounted on the INSIDE of the barn with a extension duct to the outside for exterior air if I'm getting this right? sure sounds like it would work..
Yes I'm going to use the duct where the diesel heater fed the shop from outside
I know a lot about a lot of things BUT I still have a lot to learn. Life is what you make of it. So, why not make a working machine to make it easier.
