I am installing a wall furnace in a 2×6 wall instead of a 2×4 wall is it ok to put some 2 inch rigid insulation beetween the furnace and exterior wall? The instructions dont mention any clearance requirements for the backside.
Discussion Forum
Discussion Forum
Up Next
Video Shorts
Featured Story
This centuries-old paint offers vapor-permeabiity, maintainability, and longevity with zero VOCs, but know its limitations before you get to work.
Featured Video
Highlights
"I have learned so much thanks to the searchable articles on the FHB website. I can confidently say that I expect to be a life-long subscriber." - M.K.
Replies
I installed a wall furnace and mine could be flush mounted up against the wall. Or in your case rigid insulation. Check your owners manuel for details or if you don;t have one and its an older wall furnace, go on line to the manufactuer to be sure.
I recently installed a 35k BTU "blue flame" vent-free heater in a job i am working on for temp heat. It said that it could be flush mounted against a wall (although i was sceptical/cautious). I leave the thing running for 9 hours a day and the back doesnt get hot at all. the sides are barely warm - the top a little more. Nothing that would cause you a problem - though.