Smunderdog
New Member
Hey all! I'm in the process of having local HVAC experts provide me input & estimates on this but thought I'd throw it out here for discussion as well.
Ranch home with full basement. 8" tall main trunks for both supply & return run across the basement ceiling below the floor joists for the 1st floor so the head space from the basement floor to the bottom of the main trunks is 6'4". They currently run in a straight shot right out of the furnace parallel to the main beam that supports the middle of the house, but are 3' away from the beam and essentially right across the middle of the ceiling of space that I'd like to finish into a bonus room.
I'd like to put 45 degree angle transitions on them near the furnace so I can angle them over closer to the main beam and then 45 degree angle transitions to straighten them back out to continue parallel to the beam. This would allow me to box them in with the beam and open up the ceiling in this bonus room.
I understand that the preference is to keep ductwork as straight as possible and by adding additional turns/bends I increase the resistance, but many of the other DIY scenarios I see posted out on the internet where red flags start flying appear to be asking about adding much more restrictive turns (multiple 90 degree joints etc).
Any thoughts on what the realistic impact (2) 45 angle turns would have on the system?
What additional info would be helpful to know?
Ranch home with full basement. 8" tall main trunks for both supply & return run across the basement ceiling below the floor joists for the 1st floor so the head space from the basement floor to the bottom of the main trunks is 6'4". They currently run in a straight shot right out of the furnace parallel to the main beam that supports the middle of the house, but are 3' away from the beam and essentially right across the middle of the ceiling of space that I'd like to finish into a bonus room.
I'd like to put 45 degree angle transitions on them near the furnace so I can angle them over closer to the main beam and then 45 degree angle transitions to straighten them back out to continue parallel to the beam. This would allow me to box them in with the beam and open up the ceiling in this bonus room.
I understand that the preference is to keep ductwork as straight as possible and by adding additional turns/bends I increase the resistance, but many of the other DIY scenarios I see posted out on the internet where red flags start flying appear to be asking about adding much more restrictive turns (multiple 90 degree joints etc).
Any thoughts on what the realistic impact (2) 45 angle turns would have on the system?
What additional info would be helpful to know?