Having my heat pump and furnace installed today. One of the co-owners of the company came out with the team to look things over and get them started. Well, after studying for about 30 minutes, they came to the conclusion that they would not be able to install the Aprilaire spaceguard 2200. I have 2 returns coming in on either side of the bottom plenum so they were going to install the spaceguard horizontal. Well, there was just not enough room vertically to fit the lower plenum, spaceguard, transition to furnace, furnace and then the coil. So then was no room to make the connections to the supply lines. Oh well, I'm disappointed, but if it won't fit, it won't fit. At least I will save a few bucks.
Secondly, one of the main reasons I went with this company was because they were going to run new supply lines to my (2) back bedrooms. I have (2) 10x10 runs feeding that side of the house. 1 of those has (2) 6 inch lines and the other has (4) 6 inch lines. The co-owner's solution was to just come off the end of each of those 10x10 lines with 6 inch flex to each bedroom. His reasoning was that those 10x10s were no where near maxed out on available airflow, so it was ok to just add another 6 inch line and feed another wall of the bedroom? Was he correct? To me it just doesn't seem right. Instead of going through the trouble of cutting new vents and all that, I suggested maybe increasing the 6" lines to those bedrooms to 8". He said that may or may not help. He did say the new furnace should flow more air than the old, and with the extra air flow, and 8 inch lines it should help some. Right now, I have told him to just do the 8 inch lines, but I think I still have time to change my mind if I need to.