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Drain line is stopped up, overflowing and dripping into light fixture in hall way

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Need to cut and clear drain line.maybe install a removable rubber coupling so its easy to repair next time

Posted on Aug 10, 2008

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2 Answers

Why does the drip pan overflow?


The pan may have been installed incorrectly but it also is possible that debris may be clogging the outlet periodically.

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Would a home a/c stop dripping condensation after a tune-up WAY, WAY overdue?


It should drip. That's the humidity from your house. Call them out again to have them verify the drain pipe is clear. Tell them you think they did something wrong. If it doesn't drain right, it will pool inside the unit and cause the internal AC panels to rust if the drain pan (below the condenser) overflows. Or worse, it might be a source for mold to grow inside the system. The later being unlikely, but not impossible.

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MLG LS307HV. Condensation is dripping off the bottom of the indoor unit. We've mounted the unit level but the left side continues to pull up. The wall mount is level but he unit is slightly out of...


the inside unit should be mounted with a slight tilt to the outside - so the water can drain outside.
also - be sure your drain hole (in the unit) is not plugged - either with dirt/debris.

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BTU is leaking water from the inside.


Take the cover off the inside unit and look for the drip pan under the evaporator coil. It should have either one drain in the middle of the pan or a series of smaller drains along the back of the pan. The drain(s) is probably clogged up and causing the pan to overflow into your home. Also check the drain line on the outside wall where the refrigerant lines come through the wall for a blockage.

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I have a Weather King AC/Furnace in the attic that's dripping water into the drain pan. When we purchased our new house it came with this unit and it never dripped ater. Now, the water is dripping towards...


I assume it is dripping water when the AC is running. If you look at the attic unit, there should be a PVC pipe running from the unit - probably an insulated PVC pipe. This pipe probably goes across the attic to the edge of the house and drains outside. The drain pan may also have a drain pipe, but the one on the AC unit is the issue, and is probably plugged. Go outside and see if you can locate the AC drain pipe. See if the ground is wet below the pipe and if water is steadily dripping from the pipe (with AC running). If the pipe and ground are dry, the pipe is plugged. If you have a wet/dry vac, try connecting it to the drain pipe outside to see if you can **** the pluggage out. If you can get it clear, water should start dripping out of the pipe. This same thing happened at our house. I decided to cut the pipe in the attic, and add in a PVC isolation valve, tee, and water hose connection with plug, so I can valve out the AC unit from the pipe, remove hose connection plug, and hook up a water hose and flush the line to outside. Lowe's sells all of the PVC pipe fittings. The water pressure from the hose will always flush out the algae and crud to the outside of the house. I can also remove the plug and pour a cup of bleach down the drain pipe every couple of months to keep algae growth in check. I also cut out the trap (u-leg) from pipe in the attic and purchased a ready made trap a Lowes (the contractor who built our house had made a lousy homemade trap). I purchased a few PVC elbows and installed the trap on the drain pipe outside. By the way, our AC drain pipe comes out of our wall outside and drains near our outside unit. Our secondary drain pan drain pipe comes out outside from an eave on the side of the house. I don't know what you drain line looks like (it may have a port to add bleach, or some cleanout provisions, maybe not). If you choose to modify/improve it, then make a sketch of it, go to Lowe's and get the PVC parts you need + PVC pipe primer and cement. PVC cement dries fast. Remember, the pipe must flow downhill from you AC attic unit. You can use a regular wood saw to cut the pipe. I hope this helps you. You need to keep the drain line clear as algae will continue to grow in it. Pouring bleach in the line every month or two helps. You also need to check maybe once a month that the line is draining properly (check to see if dripping outside). You can get some serious water damage to your ceilings if the water backs up and overflows. I discovered that our drain line was plugged just in time as our drain pan drain line was also partially plugged and drain pan was about to overflow.

May 08, 2010 | Weather King 12AJA4201AH Air Conditioner

2 Answers

Intertherm Air Handler Coil leaking water


replace it it's junk - going to do that this time because this is the fourth year of the same problem on the hottest days this intertherm junk downflow ac unit condensates where it will not and con not be captured by the pan - built by relatives of the guy who designed the titanic -

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1 Answer

Excessive water dripping from Central A/C drian line


sounds like the overflow drain is picking up the water that means the main drain is clogged.you need to find the main drain pipe if lookin at the air handler in attic there should be 2 drains from unit one higher than other follow it and blow out drain they put the other overflow drain out the eve so if it stars leaking someone notices it and it doesnt damage cieling but it sound like it needs imediate attention befor it does go to the overflow pan and damage your cieling. i hope this helps and good luck

Sep 29, 2009 | Amana PTC153B35AJ Air Conditioner

1 Answer

My drip line is draing very slow and overflowing. how do I clear my line?


put a little bit of draino in the pan at the drain line. pour it slowly so you can watch to see if going in the line - if so then give a few minutes for this to work. should be fine after that. if works do this about once a year.

Jun 15, 2009 | Air Conditioners

1 Answer

Hi, I have water dripping from my a/c, on the inside


The condensate drain line is probably clogged.

Find out where the pipe exits the home, and attatch a wet/dry shop vack to the end of the drain line, close it up around the pipe as much as possible and trun it on.

These typically get clogged with dust, dirt, pet hair, mold etc.
They usually clog at the elbows, P-traps and the inlet coming from the drain pan. There is an internal drain pan in the unit that catches the condensation. When the line clogs the pan overflows and you have water dripping from the unit.

There is also a small chace the pan has a hole in it, but thats fairly rare. There is also a chjance that if the unit is not level the water will overflow the pan before it can drain. (most pans are only 1 to 2 inches deep.) Make sure the unit is level or veryslightly lower toward the drain side.

Dec 09, 2008 | Air Conditioners

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