I've been working on some more duct work. Namely the cold air return in the living room. What a total disaster that was (the previous job). I've got it sorted out, but now I'm left wondering if I have enough venting for the cold air return on my furnace. Basically, I have 13 hot air ducts (12 are 5" diameter, and one is 4"), and the only cold air return is from one 6" and one 5" duct. It seems to REALLY suck the air when the furnace is running, which makes me think that I might need another return. That's not a problem, though, since I CAN connect a second 5" duct right along side the current one (going upstairs) but I just don't know if I *SHOULD* or not. Heating systems are usually carefully calculated and balanced for every house, but I'm not entirely convinced that it was done properly in mine.
I want to get an expert in, to have a look, but the place I want to use isn't open on weekends. :(
Other than this, I haven't done much on the house lately (though the duct work job was quite messy and isn't done yet).