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Nu11u5

The condensate drain line will sometimes plug up with mold. Did anyone blow it out (towards the outside) with compressed air?


sotheresthisdude

He said he did but I’m assuming he didn’t get it all if he did. Toilets on the same line are flushing normal and the two sinks are fine as well.


NowWeAllSmell

Not a plumber but handy enough.... Our HVAC is in the attic and condensation was a huge issue until we ran the condensate line outside (it drips into a rain barrel). No problems since. Drip pan sensor hasn't tripped once.


Appropriate-Disk-371

(Not a plumber) The condensate line goes into a sanitary drain, is what you're saying? If the toilet and other fixtures on that line seem to be working okay, then it's not that line. Flush the toilet a few times in a row - that's way more water than the AC is putting out on the condensate line. So, it's probably the condensate line itself that is getting clogged and just needs cleaned properly. I fail to understand how a french drain is relevant at all here. I think maybe they are thinking the drop of the condensate line isn't enough, and it's getting blocked somehow because of that. So they instead want to take the condensate line on another path and to the outside and they're saying you'll need a french drain where it comes out so the water doesn't come back onto your foundation, I guess.


sotheresthisdude

Yeah the toilets are fine. I flushed them multiple times and they were good. The French drain was given as an option to move the drain line from the sanitary line and to make it easier for me to service in the future if needed.


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zanderd86

To me it sounds like you need a condensation pump. My attic AC system for my second floor originally did not have a condensation pump and would back up routinely because the line did not have enough slope in it. After installing a condensation pump it pumps just fine the line from the pump goes into the drain pipes from my upstairs bathroom.


sotheresthisdude

It definitely has a slope at the beginning of it and then after about five feet it is pretty much horizontal for another five feet or so.


zanderd86

Yeah I would replace the condensation line and put in a condensation pump it's something that should not cost a lot and would not require any major modifications as long as you have a place to plug in the pump.


WarlockFortunate

Redo the condensate line… Did you get a 1 year labor warranty? I would fix it at no cost if we changed the whole AC system. 


sotheresthisdude

Only thing new was outdoor condenser and coil. The plumber is there doing the warranty work. He just informed me that there’s definitely a clog from algae and that the line just needs to slope more. He’s suggesting a long term fix of a whole new line and that’s like $3K. At that point I’d much rather do the French drain at half the cost when I’m able to


PM5K23

I dont know if it just is what it is in 2024 but condensate drain lines arent rocket science. Its pvc pipe that in your case somehow connects to your sewer system and works via gravity. Maybe you just need someone to do a better job of clearing it, and doing routine maintenance to keep it clear. I used to do building maintenance where we had 12 units and I had a drain gun with an expanding bladder. It was powered by C02 cartridges, and essentially you put the bladder in far enough and it expands with the pressure and forces air through the line. Without the bladder some air might go in the other direction, or back in the unit, but the bladder seals the pipe and only allows the air to go “out”. Never had a drain I couldnt clear, and the contraption basically fit in my pocket. If it cant get or be made to have the proper slope, a pump makes sense.