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  1. #1
    Join Date
    Jan 2007
    Posts
    54

    What size Hvac Unit

    Just received a quote on a new system on a new home were building. HVAC Contarctor did a J manual Calculation and said it could be a 3 or 3
    1/2 ton unit. Don,t want to oversize. Here are the results, what are you thoughts?

    AREA 1878
    Sen Gain 35,186
    Lat Gain 4,371
    Net Gain 39,557

    Sen Loss 92,875
    Sys Htg CFM 1,161
    Sys Clg CFM 1,549
    Sys Act CFM 1,549
    Duct Size 22x12

  2. #2
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    67,741
    What were the design conditions.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  3. #3
    Join Date
    Nov 2008
    Location
    Biloxi, Ms.
    Posts
    176
    I can't get that much sensible out of any 3 or 3 1/2 ton system that we sell.

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