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Thread: return air vent

  1. #1
    I have closed off all upstair vents as well as stairwell. Will it hurt furnace to seal off upstairs return air vent also? Trying to save a few dollars this winter.

  2. #2
    Join Date
    Aug 2002
    Location
    Office and warehouse in both Crystal River & New Port Richey ,FL
    Posts
    18,836
    Depends on the percentage of air flow decrease it will cause.Sounds like way too much to turn "Off".

    What type system,gas,heat pump,etc.???

  3. #3
    I have a gas system.

  4. #4
    Join Date
    Aug 2002
    Location
    Office and warehouse in both Crystal River & New Port Richey ,FL
    Posts
    18,836
    Restricting the air flow can damage the heat exchanger.

    I'd close the supplies upstairs a little,so as to keep it a few degrees cooler,and leave the return open.It really should be tested by a Pro to be sure the minimum air flow is still there.

  5. #5
    Join Date
    Nov 2005
    Location
    BAKERSFIELD CA.
    Posts
    78
    ytou have to be really careful at how much you restrict the air flow like dash said you can damage the heat exchangers and if you do that how much money have you saved then. restric a couple but not to maney and get some one to come out with a flow hood to check the air flow and also the temp rise across the exchangers the manufacture has that info in the unit on what it should be

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