Pretty much the title. I have a full basement. Part of it is unfinished and has the water heater, furnace, and washer / dryer. The other part (roughly 1/2 of the total space) is partially finished. It has a dropped ceiling and wood panel walls, both with no added insulation. There is an AC / heat vent cut into the ceiling. It is currently taped shut. There is no cold air return.
Even with the vent closed, that area of the basement stays pretty cool even in the hottest part of the summer. I'm assuming because cold air sinks and the ceiling isn't insulated. I'm thinking about adding a cold air return near the bottom of the floor and uncovering the vent. The thought is that the AC would cycle air through the basement and pull the cool air back into the main living area. Should this work? Anyone have before and after experience doing this kind of thing?