move cold air return or add extra hot air
I'm trying to figure a best first step for adding comfort to a developed basement where BOTH the hot air vents and cold air return are located in the ceiling.
I believe I have 3 options, and a combination may be needed. But possibly not, so I want to try one step see if the results are good enough.
1) Add a new vent off the furnace and bring it into the room, it could be located up high or down at the foot of the wall. Either way it adds heat.
2) Move the cold air return to the ground - requires some construction and taking down unfinished drywall.
3) Third option is to change the cold air return to a location further away from the existing ceiling hot air vents, return would still be located up high though.
My gut says it would be best to add the new vent (option 1), and likely close off the cold air return for now. But when I asked the guy at the home improvement store he was the opposite, and choose to focus on the cold air return being moved to the floor first. Basically I have two vents to heat most of my basement