This post is a question regarding placement of ceiling supply and return lines.
I'm building a new 2700 sq foot single story home in Central Florida (Lake County). The HVAC is a Lennox system with G60V gas furnace and XC21 A/C unit. The system will have four zones. Supply and Return vents / ducts / grilles are in the ceilings.
The builder's sub-contractor for HVAC has a general practice of putting the supply and return openings in each room in a location about 6" out from the wall and about 3' - 4' apart against the same wall. These are all placed over the inner walls, not over walls that have windows or doors. The placement is the same for a given model home, no matter what the home orientation is. In other words, a home with a Master Bedroom with windows facing south west will have the supply / returns in the same location as a home with the Master Bedroom windows facing north east.
My question - Is this a normal / good practice? Should I press the builder for the vents to be in other locations in the rooms?
I would think that there would be little airflow with the supply and return so close together and that the heat / cold from the window or door areas would not be properly conditioned.
Advice would be appreciated.