I am seriously thinking about ditching the ducted system and going for a 3 head mini split for the rest of the house. I would really like to get the duct work out of a 140 degree attic. This would also let me zone out the 2 bedrooms we seldom use.
This is an open plan with the living room dining area and kitchen all open. My thought was a compact cassette unit there and a wall head in the other 2 bedrooms. The cassette will accommodate a 4" duct for the master bath. That may need to be the 18KBTU model
Am I crazy?