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Not Sure of "My" Drain Line Outside

Scotty13 on Sun August 23, 2015 4:42 PM User is offline

I want to clean out my AC drain line with a dry/wet vac. I live on the second floor / corner unit of a 3 story building/condominium. My A/C condense outside is located in the middle of two others. On the right are three different drain lines. I'm guessing "my" drain line will be the one in the middle? What do you think and if I clean my line, would it cause any flooding or damage in the unit above or below me?

Thank you,

HECAT on Sun August 23, 2015 5:47 PM User is offline

Never been asked about drain line flushing before. Three separate drain lines would most likely indicate three independent drains (not connected to the others). So, if you suck on the wrong line with the shop vac, it probably cannot hurt anything. To clear slimed up drains, I have heard HVAC guys recommend to pour a little bleach water into the drain from the top, let it run thru, run some clean water behind, and a little gentle nitrogen blow. HTH.


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Scotty13 on Mon August 24, 2015 2:22 AM User is offline

While my AC was running, the middle pipe was the only one dripping. All the pipes are permanently attached from my air handler, so I don't know where to flush with bleach and water. I don’t have any clogs yet, I just want to take care of it now before it’s too late. It’s recommended to do it twice a year, especially if you live in S. Florida.

Thanks, S

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