Basement Cooling?

Problems related to residential installations.

Moderator: juster

Post Reply
Posts: 1
Joined: Tue Jun 12, 2012 9:31 pm

Basement Cooling?

Post by TxguyinDC » Tue Jun 12, 2012 9:32 pm


We recently bought a remodeled attached townhome (3 story with a basement). It’s a 1 zone system with return air grills at each floor (center of the house), and ceiling registers for forced air (cool/heat) on the 2nd and 3rd floors. The handler is on the 3rd floor, and the condenser is on the roof.

We use the basement as a media room, with TVs, computers, etc. The basement has a return air vent, but no registers to force cool air down. It can get quite hot in the basement (+ 6-10 degrees more than the upstairs). We partially blocked some of the air intake in the other 2 return air grills, which made a partial improvement (more cool air circulates down as more air is pulled through the return air in the basement). Of course this risks freezing the compressor, so we're cautious about this as a long-term option.

I’ve had all 3 options proposed by different contractors and am curious what people’s thoughts/experiences -
Enlarging the return air grill in basement and blocking off some of the return air in the other 2 vents using closeable louvers or something similar (more circulation in the basement and more air pulled out of basement, bringing down cooler air from upstairs)
Installing a split ductless system in basement as a separate cooling system (more expensive than option 1; requires some significant installation of cooling pipes, electrical, etc.)
Running 1-2 ducts from upstairs to basement as forced air ceiling registers in basement (also expensive; requires labor hours to install and repatch drywall)

Thanks in advance!

Most Valued Contributor
Posts: 1019
Joined: Sat Jun 18, 2011 11:26 am

- Basement Cooling?

Post by Freon » Thu Jun 14, 2012 10:13 am

I agree with theduke. The cost should not be that bad since the system for one room should be small. If you place the condenser on the ground close to the basement, the refrigeration lines should be a short run. Get some estimates and see what installers say.

Post Reply