what are the two white PVC pipes coming out of the attic a/c?

Question

I have a drip from a ceiling in one of the rooms and i believe it's from one of the two white PVC pipes coming out of the a/c? What's the purpose of each pipe?

Answer 1

As humid air from inside your house passes over the coil of your evaporator, the cool surface condenses the water in the air. It drips down to a pan in the unit and the PVC pipe routes the water to the outside. Since you say you have two lines, You probably have a secondary " back up" pan under the whole unit with its own drain line.
Check to see if the water level in the pan is higher than top of the drain line where it is attached to the pan. If so you probably have some blockage in the drain line (I have also seen this occur not because of blockage, but because the drain line coming out of the pan was plumbed on an up hill angle- the water level in the pan would overflow before it got high enough to make the turn down, although this is rare).
Most time the blockage can be cleared by pouring bleach down the line.
If it isn't blockage in the line(the water level in pan is low), check the pipe to see if its leaking where its attached to the pan, and at all glue joints. Another possibility would be a crack in the pipe, or a badly corroded pan that has a hole in it.
Good Luck.

Answer 2

I believe the pipes are air exhaust pipes for your bathroom. I think it has something to do with stuff going down the drain better because there is no vacuum. To get the water out you have to let the air in.
Any how, if you do have a leak there it is probable the roof is not sealed around that pipe well. I don't think the waste water would ever back up that high. Unless it was a Steve Martin movie!

Answer 3

One is a condensate drain from the A.C. and one is a drain from the drip pan. If it's dripping on your ceiling, have it checked out, it should be a quick and easy problem to fix.

Answer 4

These are condensation drains. They should flow down to a drain outside your house. Perhaps one of the pipes is cracked.

Answer 5

these are condensate drains.. often they become blocked with insulation , etc... the best way to clear these lines are (since they are small and contain 90 degree turns) to use compressed air to blow them out, another alternative that we used to use was to connect a wet/dry vac. to the lines outside, and the suction would clear it.. piece of cake..

Answer 6

look outside and see if either line is dripping.....is not and ur ceiling is soaked, ur ac pan is overflowing and the lines r clogged...u need to call a hvac man............

lic. gen. contractor

Answer 7

Those are the condensate lines, They maybe be clogged.

Answer 8

over flow, condensation built up so it can escape to the out side and not in you home.