Quote:
Originally Posted by DrHitch
Has anyone hooked up a line from hot water supply to "blast" clean that AC condensate line?
Yes, would require a backflow shutoff valve and a bit of plumbing. Surprised that AC installers haven't suggested this method ...but, agree that the monthly manual flush works just fine!
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It's NOT recommended to flush the drain pipe with any method that could pressurize it because the drain pipe joints may not have gotten glued 100% and it could be forced apart underground or even under the concrete somewhere. The recommended method is to vacuum from the outside. That being said, I keep mine clean with this method, which should have minimal risk because of the frequency I do it. At the first of every month I connect a short hose from my hot water tank drain and run some through it. This accomplishes two things, regular flushing the AC drain and the water heater. I also put a bucket under the outside drain to monitor the deposits coming out of water tank. I use that to determine how much water to run through it.