Hello HVAC Experts-
I'm currently finishing a Unfinished daylight basement and have access to the Main Trunk line for the Main Floor. I'm The Layout of the house is this way
Top Level- 1000SF 1 Return
Main Level - 710 SF 1 Return
Basement - 670 SF 10 foot ceilings Unfinished No Return No Ducts.
The house is ran with Flex Duct on that branch off the main trunk line. The size feeding the upstairs in 6 Inch with R8. I know the furnace was sized to heat the whole house because the city made them size it for the unfinised space.
1.Should I Add a Return in the basement what are the pro/cons
2. Can I follow the exact heating that they did on the main level 3 4x10 registers and run the flex line to match. Will i have any isuses here?
4. Can i just cut a collar in and run them a few feet and go with it? How do you mount the register upside down on the joist?
Last but not least I had a HVAC guy out and he wanted to cut the registers into the side of the trunk line that I'm going to Soffit. I rather not and run them to the end of the celing and have the register be on the ceiling. What are your thoughts.
Thanks for all of your help;-)