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  1. #1
    Join Date
    Jan 2010
    Posts
    78

    Default Third floor HVAC return

    Hi, I have a third story attic space that I'm converting into a bedroom. My gas furnace and A/C unit is in the basement of the house. I have run two ducts up to the third floor space. Heating the space isn't too bad. I have an electric baseboard installed plus with heat rising, etc., it stays pretty nice up there. Cooling in the summer is next to impossible. I need a window A/C unit to keep it comfortable. Heres my question. I know the value of a "return" to the units in the basement. The only place I could place one is in the floor of the space where it will meet up with the return from the 2nd floor. Should I put this return in? I notice that the rest of the house mostly has returns up high on the wall. Would a floor return simply return my cool air back to the basement in the summer? The option of a furnace/AC unit on the third floor is not an option at this point. THanks for any suggestions.

  2. #2
    Join Date
    Dec 2010
    Location
    Houston Texas
    Posts
    2,969

    Default Re: Third floor HVAC return

    Here in the deep south, high returns are favored. Up north, low returns are favored. Where are you located?

  3. #3
    Join Date
    Jan 2010
    Posts
    78

    Default Re: Third floor HVAC return

    I'm probably in the "middle". Southern NJ. We get winter temps in the teens (as in the last few days) and summer temps in the mid- to high 90's w/ high humidity.

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