Quote:
Originally Posted by retiredguy123
I agree. But, if the P-trap is located near the inside HVAC unit, you may have about 20 feet or so of empty pipe for animals to clog up the pipe. I don't have a P-trap or a screen, and I have never had a clogged drain. But, I do keep it flushed out.
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Stay away from using Bleach in your drain line. Over time, it can deteriorate the glue that holds the PVC pipe together.