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    garys7's Avatar
    garys7 Posts: 7, Reputation: 1
    New Member
    		  
    #1

    Jul 4, 2009, 10:50 AM
    Sizing condenser
    I have a 4 ton 10 seer air handler. My house is 1485 square feet. I want to get a 14 seer condenser, would a 3 or 3 1/2 ton be more efficient?

    Thanks

    Gary
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
    Uber Member
    		  
    #2

    Jul 4, 2009, 12:03 PM

    Can't tell without a manual J calculaion. Manual D is used to size ductwork, Manual J heat and AC. A lot of stuuf goes into the analysis. See HVAC Software, HVAC-Calc for Heat Loss, Heat Load Calculations
    siberianair's Avatar
    siberianair Posts: 360, Reputation: -4
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    #3

    Jul 5, 2009, 08:13 AM

    Changing seer does not make it so you can change the tonage... get a consult before doing anything from a local company. Most will give estimates for free and they can do a heat load calculation.
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