Have a project that the VE process (you know, 'removing the architecture from a building') eliminated the basement in lieu of a slab floor, and now the air handler must go in the attic.
Well, I'm going to talk to an engineer friend (mechanical) and the subcontractor - but my concern is that if the ceiling insulation is on the attic floor, will the air handler "above" the insulation, it'll be a liability because it's "out in the heat/cold". Or is this common? I know in the south, it is really common in spite of the fact that cold ducts + warm air = condensation.
My thought is to build a small room up in the attic truss space with an insulated envelope, but the ducts will still need to be run all over, and I can't see insulating under & over them all throughout. Can't hang batts between the truss top chords because it's R38 and the top chord is only 2X6 - no way to get a vapor barrier up there.. unless the VB sits between the trusses and the sheetrock ceiling... but that sounds like another detail that is not too common.
Location in question: Southern New England
Thanks for the feedback, I know I can count on you guys.