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    landscapeexec's Avatar
    landscapeexec Posts: 1, Reputation: 1
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    #1

    Nov 18, 2007, 06:04 PM
    Heating/AC system off balance.
    I have a sixty year old home with an three year old forced hot air oil heat system. I added AC this year to the unit with a 4 ton unit. (which is way oversized) My home is small 1400 s.f. and I am having problems getting the hot air/cold air to the second floor. The duct work is in place and really cannot get altered. Is there somethng that I can add to my heating system to force more air upstairs? What options do I have?

    Thank you for your assistance.
    T-Top's Avatar
    T-Top Posts: 1,871, Reputation: 100
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    #2

    Nov 18, 2007, 08:06 PM
    You can try shuting down the downstairs registers a little at a time to see if it will help move more heat or air to the upstairs.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #3

    Nov 18, 2007, 08:44 PM
    If you did not allow some height for the A coil in that oil furnace it might be restricting the air flow especially if it has a drum heat exchanger.

    We found over the years that on a oil furnace which most have a drum heat exchanger you have to raise the A coil about 12 to 18 inches minimum off the top of the furnace. The drum heat X does not allow the air to flow properly through the A coil and causes a major restriction. Been there done that over 40 years ago..
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