Hi. I really hope someone can help me. I'm about to hire an HVAC contractor to install central air in my new home, one story over a full finished basement. The air handler is going to be in the basement. The contractor wants to have the ducts serving the first floor come up out of the floor. If hot air rises and cool air falls, isn't it best to put the registers for the A/C in the CEILING of the first floor rather than the floor? From the ceiling the cool air would fall down on the room's occupants, cooling them. If the cool air is coming from the floow, it seems it could just hover around the floor and never really cool the room thoroughly. Is it a hard and fast rule to put the registers for A/C in the ceiling or does it really matter?
I hope someone can answer this, he wants to start working soon (and I want to move in soon as well)
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