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A/c water leak

I have a constant leak from my a/c unit. I sucked out the condensation line, cleaned remaining water from pan, poured a cap of bleach every air filter change, and after three days my air filter is wet on top and on the corners. What else to do when the unit still blows cold air?

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If the line and pan keep filling with water the line has to be pluged futher down the line

Posted on Nov 14, 2008

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1 Answer

I can't find a drip pan or a hose where I pour bleach in to keep clean


Sounds like Condensate from AC unit in attic backed up. If no clean out cut in one

Mar 17, 2016 | Air Conditioners

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We installed a new condensation pump about a year ago and it has worked fine up until now. It still seems to be working but when we run our central a/c unit for more than a few hours water collects...


There must be a hole in the condensate pan if it's not coming from over the top. Bleach only prevents mold and bacteria growth, not blockages. Check and clean the drainage tubing connected to the condensate pump

Aug 30, 2013 | Air Conditioners

1 Answer

After switching on the ac unit water start dripping


I assume inside the air handler closet, underneath the unit, or wherever unit is located.
Sounds like condensate line is stopped up.
You need to blow out with compressed air. You must make sure that you block air from exiting from open end of line. I use a plastic shopping sack. May have to remove cover to evaporator and insert hose in condensate drain connection in drain pan. Stuff the bag in around hose and opening to seal and blast air into line. Be sure that if there is a "T" fitting with riser and cap on the end, that it is secure, otherwise you may get a shower. You also may use the riser with the cap remove to blow out. insert hose past opening leading back to evaporator drain push bag down past opening leading back to evap drain, then seal around inserted hose and blast. The riser with the cap is where you would pour some bleach every couple of months to keep line clear.

Aug 24, 2013 | Hitachi Air Conditioners

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I have a RHEEM RHQA 1010B a/c unit that is pouring water out of the bottom....please help find cause and solution. PS it is very humid where I live!!!


Hello, usually water will leak from a furnace if the condensate line is clogged, or the condensate pan is cracked. If you have a shop vac try to hook it up to the outlet of the drain line and use the suction pressure to remove the sludge that is clogging it up. If the drain line appears to be clean the most likey the condensate pan is cracked or rusted and causing the leak.

Jul 13, 2011 | Air Conditioners

1 Answer

My coleman rv ac unit is dripping condensation inside the camper, what is causing that?


It is possible that the drain hole on condensate pan is plugged and causing water to over flow pan. Remove cover from unit and check drain line.Clean coils andpan as best you can and clear drain hole. Add a small amount of bleach to water in drain pan.This will kill any algea or bacteria that may be growing in condensate water and plugging the drain. Thank you

Jun 20, 2011 | Coleman Mach III Air Conditioner

1 Answer

Our A/C unit is leaking between the inside unit and the heating unit. We've had two repairmen out. Both seemed confident that the lines were clogged and both blew them out. The a/c is still leaking. It...


Could be the pan under the evaporator has holes in it. Did the technicians pull the coil to check for holes in the pan? At the very least, after blowing out the condensate lines they should have poured water into the pan to check for proper drainage and to ensure there were no leaks in the evaporator's drain pan.

It could also be an issue with not having a trap installed in the condensate line. On some sytems that have the condensate line and evaporator coil on the suction side of the fan, no trap installed will allow the water to be sucked back into the pan and eventually may cause the water to spill over the pan. Having the trap installed insures the water will drain properly. It could also be an improperly installed trap that allows air leakage. To give you an example, if the condensate comes off the pan and goes to a tee (used often as a port for blowing or cleaning out the line) and the tee is not capped off when not being used for cleaning purposes, this will allow air to be sucked back through the tee and prevents the water from flowing through the tee and onto the trap.25011e4.png You were correct in not running the unit as water can drip down into a fan motor below the pan and cause it to short out.

One other issue that comes up from time to time is the inability for water (condensate) to drain or trickle down the face of the evaporator coil. This is usually due to dirt blocking the fins of the coil and the condensate accumulates on other portions of the coil and when it hits the blockages of dirt or other debris, it doesn't perform its usual capillary action and follow the fins down into the drain pan, but instead stops, accumulates and then falls straight down into the lower sections. Check the coil's fin surfaces for dirt or other debris. If present, have the coil cleaned.

Sep 03, 2010 | Air Conditioners

1 Answer

9,000 btu invertor system & 12,000 btu system dripping water from evaporator case,evaporator very clean,suction line not freezing up,just sweating as it should,condensor fan running good,is there a...


The condensate line attaches to the back of the indoor unit. Usually the flex drain line that comes with the unit clogs with algae. You've got to remove the line and flush it with compressed air or nitrogen and then pour about a cup of clorox bleach down the line to inhibit further growth. Use the clorox twice a year to prevent this from happening again.

Aug 10, 2010 | AmcorAire UCHW-H12AF2 Split System Air...

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I have a unit in the attic that is installed in the attic horizontally. The condensation leaks out the unit into the overflow pan. I have had the drip pan replaced as it was cracked, the overflow line...


It sounds like to me that the leak is coming from inside the unit(air handler) possibly your evaporator coil is icing up and causing a build up of water just below where the 3/4" P.V.C. drain line connects. Instead of draining out the line, it is finding its way out of the unit else where. I have seen this many times. It sounds like you have done everything that I would have done, but take a look at the bottom of the evaporator pan and I bet that it also is starting to rust out.If the new overflow pan is not leaking, and the condensate line is leak free, it has to be leaking from the evap pan inside the unit.That's why you have the overflow pan in the 1st place to prevent ceiling damage as I am sure you know. I hope I have been of some help to you, please let me know what you find.

Sincerely, Shastalaker7

Nov 01, 2009 | Air Conditioners

1 Answer

Water leaks in the house from under the unit.There is a drain pipe that leads to the outside but we dont know if that pipe gets clogged or needs service.


Open up the inside unit pannel where the drain pipe is and you'll see a drain pan where the condensation water runs out to the drain , clean the drain pan and the hole and then with air pressure from an air compressor blow the drain from inside to outside and go outside the house where the drain discharged and you'll see the clogh that came out from the drain . To keep the drain clean , pour a cup of bleach or clorox every 3 or 4 months through the drain and in the drain pan.

Oct 16, 2009 | Goodman Air Conditioners

2 Answers

We have RUUD AC, in second floor , that has a white pvc ope connected to condensate drain. other end of this pipe is inerted into large pipe neanr wall. looks a drain outlet. In the middle of this white...


Hello, W/D here.

There are a couple of things you need to check:
Look at where the drain connects to the A/C unit. There should be another pvc line right next to where the drain connects. This is the clean out/flush line, and is used for adding algeside to the tray internally, which thens go out the drain. Most importantly, there is a 1/8" hole between them, and usually, it's very hard to see. Make sure that this hole is open. If it is plugged, the condensate cannot drain from the unit while the unit is running and will create havoc with your drain system. The 'tee in the drain line is an air vent/vacuum breaker and can be used for a cleanout, but try the little vent hole trick first. Your drain line from the unit should be sloped to your house drain. If you do not have a clean out connection at your unit, then you can clean from the tee to the wall. Put one cup of white vinegar into the tee. It will work as well as bleach, without the corrosiveness of the bleach. If you have a cleanout on the unit, put the vinegar in there, and restart the unit, as the vinegar needs to get flushed by the condensate.
Your tray is designed to catch any leakage, and should drain to the outside. Look for your drain line and clear it. Tray drains generally plug at the ends, and not usually in the middle. You can clean the pan drain with a piece of stiff wire. I like to use electrical solid core wire, #12. Pass it dowh the drain from the pan, and back up the drain from the outside. Chase it with water. Usually the pluggage is either insulation, or dirt dobbers.
Best wishes and regards, W/D

Aug 17, 2009 | Air Conditioners

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