Derek Cole explains why HVAC vents belong on exterior walls and windows, not in the middle of your house. Heat loss and gain happen at the building envelope, so vents need to be positioned there to actually work. Central placement just pushes air around without solving the real problem.
Very bad idea is to— or a vent cover, something pushing that air into the middle of the house, because the middle of the house is not where it needs to be. It needs to be conditioning that wall. It needs to be conditioning that window. That is why typically it's on the outside of the perimeter, because it's trying to attack that heat loss, heat gain. In the winter, obviously you have cold air trying to come in. In the summer, you obviously want the hot air out. So the grills are in those places to attack those problems.
How to Prevent Mold and Odor in Your Air Conditioning System with UV Light #shorts
