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Thread: register vents

  1. #1
    Join Date
    Dec 2006
    Posts
    3

    register vents

    I have a 4 ton 12 seer unit how many register vent can i run off this unit?

  2. #2
    Join Date
    Aug 2011
    Location
    Eastern Shore, MD
    Posts
    798
    thats a very open ended question....the answer is as many as you have designed your entire system (including duct work) for.

  3. #3
    Join Date
    Feb 2010
    Location
    butler pa
    Posts
    1,073
    usually 1 each per run

  4. #4
    Join Date
    Apr 2011
    Location
    SE Washington
    Posts
    516
    4 tons=1600 cfm, diffrent run sizes carry diffrent cfm, not number of, but what size to how many, if all were 6" at 125 cfm each, you could have a total of 13, then depends upon length and static and all that goes into a properly designed duct system
    Total Energy Management, inc

  5. #5
    Join Date
    Aug 2011
    Location
    Eastern Shore, MD
    Posts
    798
    Quote Originally Posted by isuredo View Post
    4 tons=1600 cfm, diffrent run sizes carry diffrent cfm, not number of, but what size to how many, if all were 6" at 125 cfm each, you could have a total of 13, then depends upon length and static and all that goes into a properly designed duct system
    in what world will a 6" pipe run 125 cfm?

  6. #6
    Join Date
    May 2008
    Location
    Missouri
    Posts
    3,422
    This is not a DIY board. You need to get an experienced HVAC person to install this. He'll know how to size the ductwork.

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