Heat Pump-Air Handler question

Discussion in 'HVAC Heating & Cooling' started by jfls49, Nov 9, 2012.

  1. jfls49

    jfls49 New Member

    Joined:
    Nov 9, 2012
    Location:
    Prospect, PA
    I have a 12 year old Bryant Heat Pump, 10 Seer, 3.5 ton. The reversing valve is crap. Right now I am running the heat in Emergency mode (electric furnace) until I fix it.

    Ive been on www.ingramsairandwater.com and located a 13 SEER 3.5 ton Goodman unit with matching air handler. My question: is it reasonable to go with same 3.5 ton system I had before without going to all the trouble to do a load calc on the house if I am getting the air handler with the variable speed fan? Wouldn't the variable fan speed settings allow me to program the desirable cfm moving through the house.

    Thanks for any advice

    Jfls45
     
    Last edited: Nov 9, 2012
  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Joined:
    Sep 2, 2004
    Occupation:
    Retired Systems engineer for defense industry.
    Location:
    New England
    Without running some calculations, it's impossible to say, but 3.5T would heat and cool a quite large house. In the summer, was the humidity level in the house comfortable? If it got cold, but it was still clammy, that's an indication that the unit is oversized. A variable speed air handler helps, but that can't overcome an oversized unit's short cycling if it is oversized.
     
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