Planning the hot air ducting from my Hyfire II. I will be running 8" galvanized duct. Home Depot/Lowes have it for arond $10 per 5'. Anywhere else have better pricing?
What product do you use to insulate the duct work? Sleeves, sheets, costs? How to install it?
I really do not want to use flex duct. I am a Realtor and I have seen too many examples of professionally installed flex duct shoved into openings/kinked/compressed to even try this.
Had this "dumb" idea...depending on the costs of duct insulation would it be cheaper to use the next size up flex duct as the insulation? 10" as a sleeve over the 8" ducting? 25' for $40...