duct design

  1. S

    Redoing ductwork - should I pay for a Manual D duct design or try to do it myself? Already have a Manual J report, air handler, and all the vents.

    I am planning to replace all my ducts in the crawlspace since the current flex ducts are in horrible shape, not sealed at all, and crushed/sagging all over the place. Based on how poorly everything else was done with my HVAC system I highly doubt a manual J, S, or D was done when the new unit...
  2. Stereo

    OK to switch supply runs?

    I'm re-configuring a room and will be moving the register location slightly. Currently, I have two supply ducts that come off the main plenum right next to each other. To gain some headroom in the crawl space, rather than crossing the duct to Room 1 over the duct to Room 2, I'd like to switch...
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