New duct work, what to look for?
I'm getting my duct work repaired/replaced. Contractor coming out Monday to finalize the quote & paper work. I need to have a general sense of what I should be getting when having this work done. I know that all new flex should be R8. They are re-doing the plenhum and making it come off the blower in more of a Y shape. They are raising the existing unit off the floor (not sure why). They are putting in a bypass, they are adding an auto shut off, they are adding dampers to some of the supply lines to better control air flow. They are ensuring my 2 zones will work properly after install. They will be using mastik tape. What else should I ask for or require them to do? I've heard of a supply air sensor, do I need one?