Ductwork Air Flow Tips

3 responses

  1. John R Whittemore
    December 17, 2013

    Hello, I have two rooms that there is very little air flow at the end of the run. Here is what I have found. The unit seem to be working well. I have 16 runs total. This is what seems to be wrong to me. The trunk line is about 50 feet long and is insulated steel duct that measures 10x12 rectangle and has 8 runs on it. There is a secondary trunk line that comes off the primary trunk line. This line rises five feet with two 90 degree turns and extends for 26 feet. This line measures 13x14 steel with 8 runs with 2 of these runs on the end. Is this not backward from what it should be? All help would be appreciated!

  2. Brian Roberts
    January 28, 2014

    Does the installation of 'Reflective Foil Sheathing' to the attic rafters with the reflective side up impact roof (covering) life-expectancy ?

  3. Aaron Cohen
    November 16, 2015

    How far away from the end of a trunk line should the last vent be?

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