A/C Duct Locations

Discussion in 'HVAC Heating & Cooling' started by seaneys, Aug 5, 2007.

  1. seaneys

    seaneys New Member

    May 8, 2007
    Chicago Suburbs

    We're doing an addition to our 1911 bungalow with hydronic heat. I have not included A/C in the plans, but would like to put in the duct work while the walls are open. We do not have any duct work in our house a the present time (radiators).

    Are there any books or guidelines for duct locations and sizing? It is a one story house (main floor and basement). I'd love to just put the A/C supply and return ducts in ceiling later.

  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Sep 2, 2004
    Retired Systems engineer for defense industry.
    New England
    I'd consider the smaller, high-velocity ducts. This will limit you to an air handler designed for that, but in a retrofit, it makes some sense. The duct work is very small and the outlets unobtrusive.

    You'd need to either do or have done a heat load analysis which will tell you the size of the a/c unit you need and how many CU FT/min of air movement you need as well. Then you can have the ducts sized.
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  4. River Rat

    River Rat New Member

    Aug 13, 2007
    A long with that you want your vents to be on the ciling or high on the walls.
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