Hello Gentlemen,
Hope I'm in the correct forum. Looking to replace 2- stage 1 split system ng furnaces..Spoke to a few vendors. Been advised of incorrect air duct sizing problems. House is 22yrs old. Pardon my french but my builder sucked. Two guys I won't even consider since they failed to perform heat load calculations. The third one will. Even took measurements of my windows facing south. Wants his engineer to visit and make suggestions. No charge for any estimates.
I am on a slab and zone 1 duct work is buried. This unit is 80k btu's. Zone 2 furnace is in the rear of the home on the first floor and supports the 2nd floor. My upstairs master bedroom and bath is Icey Hollow!. Zone 2 unit is 60k btu's. The house is 2900sq ft..1500 downstairs and 1400 upstairs..Builder shoe horned in the heating system for zone2 in a mechanical room that's more like a closet. the condensers are 3ton units.
Existing furnaces are single pipe systems. Contractor wants to move zone2 furnace to the attic. I have reservations since this is unconditioned space. Plus if I want a modulating furnace(more energy efficient?) how does one deal with the condensation issues? The vendor I like would built a platform for the unit to rest upon. Not suspended with straps from the rafters..How do you insulate the condensation line? Would not want to rely on heat tape, and besides is it smart to have a condensation pump up their as well?
The current loc for zone2 supply is not 16" more like 8x12 that sits on top of the a/c coil up into the ceiling. Guess that's why contractors want to move it and repipe into the attic. my questions are would an unconditioned attic put more stress on the unit? Should I stick with a 2stage non modulating system? Master bedroom and bath are vaulted so there is no attic to access the ductwork in these rooms..Should I consider a 3rd zone for these spaces and go ductless so I don't freeze my tail off? Dh passed away so I'm on my own. Any opinions would be most welcome..Thanks..
Hope I'm in the correct forum. Looking to replace 2- stage 1 split system ng furnaces..Spoke to a few vendors. Been advised of incorrect air duct sizing problems. House is 22yrs old. Pardon my french but my builder sucked. Two guys I won't even consider since they failed to perform heat load calculations. The third one will. Even took measurements of my windows facing south. Wants his engineer to visit and make suggestions. No charge for any estimates.
I am on a slab and zone 1 duct work is buried. This unit is 80k btu's. Zone 2 furnace is in the rear of the home on the first floor and supports the 2nd floor. My upstairs master bedroom and bath is Icey Hollow!. Zone 2 unit is 60k btu's. The house is 2900sq ft..1500 downstairs and 1400 upstairs..Builder shoe horned in the heating system for zone2 in a mechanical room that's more like a closet. the condensers are 3ton units.
Existing furnaces are single pipe systems. Contractor wants to move zone2 furnace to the attic. I have reservations since this is unconditioned space. Plus if I want a modulating furnace(more energy efficient?) how does one deal with the condensation issues? The vendor I like would built a platform for the unit to rest upon. Not suspended with straps from the rafters..How do you insulate the condensation line? Would not want to rely on heat tape, and besides is it smart to have a condensation pump up their as well?
The current loc for zone2 supply is not 16" more like 8x12 that sits on top of the a/c coil up into the ceiling. Guess that's why contractors want to move it and repipe into the attic. my questions are would an unconditioned attic put more stress on the unit? Should I stick with a 2stage non modulating system? Master bedroom and bath are vaulted so there is no attic to access the ductwork in these rooms..Should I consider a 3rd zone for these spaces and go ductless so I don't freeze my tail off? Dh passed away so I'm on my own. Any opinions would be most welcome..Thanks..