Contractor Talk - Professional Construction and Remodeling Forum banner
1-1 of 1 Results
  1. HVAC
    On the same roof top, I see some units with a straight reversed L pipe and some units with traps. The water in trap keeps the indoor air from flowing out, but water always remains at the level of the pipe and keeps stagnant water in the condensate pan and promote corrosion...
1-1 of 1 Results