The AC drain pan should already have a P-trap associated with it. That's because there's a pressure difference between the inside of the AC unit and the conditioned space. Just tee in downstream of that trap and you'll be fine using that pipe as a path for your condensate that avoids a new wall penetration. I don't see why your dehumidifier itself would need its own trap.Serious question, why? The drain just pops out the wall and drips on the ground. No odor to worry about
Got it. I'll definitely be downstream of any trap on the a/c system.The AC drain pan should already have a P-trap associated with it. That's because there's a pressure difference between the inside of the AC unit and the conditioned space. Just tee in downstream of that trap and you'll be fine using that pipe as a path for your condensate that avoids a new wall penetration. I don't see why your dehumidifier itself would need its own trap.
However, do not tap into the upstream side of the AC P-trap, and don't drip directly into the AC pan.
It's all up and running. I did have to use a pump to get up about 18" and across the crawl, but I tee-d into the condensate drain about a foot inside the crawl and used a threaded barb fitting.The AC drain pan should already have a P-trap associated with it. That's because there's a pressure difference between the inside of the AC unit and the conditioned space. Just tee in downstream of that trap and you'll be fine using that pipe as a path for your condensate that avoids a new wall penetration. I don't see why your dehumidifier itself would need its own trap.
However, do not tap into the upstream side of the AC P-trap, and don't drip directly into the AC pan.
Depends on what the line runs in to,if it just day lights outside the wall I wouldnt worry about a trap.Not that I can imagine. You'll, of course, want to add a 'P' trap upstream of the DH Tee.
My intention is to clean the pump annually when I clean the filter in the dehumidifier . Hopefully that happens.check it often, ours which drains into the ac condensate pump stops up with slime time to time
Venting the pipe after the trap would eliminate its purpose, no?When u need to trap a condensate line. Only if the evaporator is on the suction side of the blower like on most air handlers. Residential units only need 1.5" difference between the in and out to overcome the suction pressure. Tie two drains together either put a tee after the trap one side open to atmosphere or drill a 1/4" hole top of pipe after each trap When evaporator is on the positive side of a blower doesn't need one.