I need some help figuring out the best solutions for this. I not really sure where to start, each of the three contractors I talk to has had a different opinion. I’m hoping to get some insight on solutions. After reading a lot of the posts, I know this is the place to find it.
We recently moved into our house in the Midwest and have ongoing issues with HVAC. The two-story house w/ basement was built in the 1920’s. Currently has two-pipe steam system with a 200,000 btu peerless boiler. We have 9 tube radiators with total EDR of 350. AC is by two split systems; one 4ton in basement for the first floor and a 3-ton in the attic for the second. The AC was added in the late ‘80’s and is all original.
The biggest issue is there are currently 5 rooms without heat or that only have some electric convectors. Our house is about 2,800 SF, with steam heating covering around 1,800 SF. I'm not sure what happened to the radiators that should be in the other rooms, my guess is that were removed at some point during a past remodel. I need to add heat to a 2nd sun room and master bath, the kitchen, a bathroom, laundry room and an enclosed porch (under sunroom).
The boiler is only 4 years old and has been regularly serviced, but it cycles quit a bit. I’m petty sure it is oversized, but not certain.
Next for the AC. The system were retro fitted and the ducting seems to wrong. Each system only has 8”x 24” return. The AH in the attic is a vertical unit and has the main truck running over the rafter collars. Flex duct then drop to ceiling diffusers. This doesn’t look to be the best set up, seems like I’ll have a condensation problem this summer. There is a lot of ceiling staining by the vents.
Lastly our air quality is, well let’s say not the best. Very dry in winter and dusty in fall. We haven’t made it to the summer yet.
So basically I need suggestions on how to fix the heat and on a new AC system(s).