I don't post on this side of the forum, but I recently had a new heat pump installed in the house I'm building for myself and a couple of things look questionable to me. Maybe I'm wrong, but I'd like to know for sure before I confront the installer about it.
He's put the main duct in and it's 14" round metal, stepped down to 12", and then to 10" on the ends. It's got a silver type of bubble wrap looking insulation around it. On the seams of some of the bubble wrap insulation he's put some type of white compound. It's a hard type compound, and I'm not sure what it is supposed to do, but he only put it on the bottom side of the duct ... he put it around some of the flex duct lines running of the main duct where the flex meets the main duct.
Also, where some of the flex duct ties into the main duct line, there appears to be gaps . It looks like the outlets the flex is connected to at the main duct is a metal flange with a thin foam gasket. There's gaps between that foam gasket and the bubble wrap insulation that's on the main duct. Is that going to leak air, or is it sealed better than it appears? The last thing I want is moisture problems in the plenum between my first and second floors.
He's put the main duct in and it's 14" round metal, stepped down to 12", and then to 10" on the ends. It's got a silver type of bubble wrap looking insulation around it. On the seams of some of the bubble wrap insulation he's put some type of white compound. It's a hard type compound, and I'm not sure what it is supposed to do, but he only put it on the bottom side of the duct ... he put it around some of the flex duct lines running of the main duct where the flex meets the main duct.
Also, where some of the flex duct ties into the main duct line, there appears to be gaps . It looks like the outlets the flex is connected to at the main duct is a metal flange with a thin foam gasket. There's gaps between that foam gasket and the bubble wrap insulation that's on the main duct. Is that going to leak air, or is it sealed better than it appears? The last thing I want is moisture problems in the plenum between my first and second floors.