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Water running from the back of my air conditioner down the wall it looks like it is actually coming from the back of the unit

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You have a clogged condensation drain. Easiest repair is to find where the drain exits the house usually by the outside a/c unit. It will be a white pvc pipe that is sticking out of the side of the house. If this is found you can use a wet/dry vac and place it on the end of this pipe and evacuate the water and debris from there. If the pipe isn't found you need to go to the furnance and find the white pvc pie coming out from the furnance and using a pvc cutter cut the pipe at that point and use the wet/dry vac at that point. Make sure you vacumm out both directions since you dont know where the blockage is. To repair the cut pipe use a pvc collar and you will not need to glue this collar back since there isn't any pressure in the pipe and it can be used again should you have the same problem later. Go to a neighborhood home repair shop and explain what you need to do and they will assist you with parts and instructions. Good luck on your repairs hope this helped


Posted on Nov 17, 2009

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Turn the unit power off at the disconnect or breaker for the air handler.
Remove the panels from the front of the unit.
Get a flashlight and look down where the coil is located, usually towards the bottom of the unit, and look inside the pan that collects the water.
Verify that its not full of water, If it is then you will want to find the drain line that is outside and connect a wet vac to the drain line and remove the water from the line.
Keep the vacuum running and go back to the air handler and make sure you can hear the air sound from the line being cleaned from the vacuum.
If you do, great. Then find something to put some water into the pan so you can flush out any extra build up that may be in the pan (algie,Rust, ect) repeat until clean. Pour a little vinegar in the pan as well to help reduce algae build up.
Also make sure that the pan is not cracked anywhere at that the drain lines are connected tightly to the pan.
If you have access, remove the filter and inspect the lower part of the evaporator coils and make sure they are clean, if there not that could cause excess water to drain down instead of in the pan.
If you have a level make sure the unit itself is level and not leaning to far to spill water out of the back of the unit.

Good Luck.
Thank you for using FixYa!

Posted on Nov 17, 2009

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Hi, it sounds to me like you have a ductless split system, and water is over flowing and running down the wall.Causes for this could be, a dirty filtering media and or evaporator coil dirty causing the unit to ice up some, and the drain not being able to keep up.Several things can cause this. Condensation at the indoor coil is normal, but not if it is building and running over.What needs to be done, depending on how high up they put the indoor unit, is to get the proper size ladder, and remove the cover to expose the filter and coil.You can wash the filter in warm water if it is of foam. Look the coil over to see how dirty it appears, for instance if you can peel a sheet of build up off, than you know it was icing up and restricting air flow.Just at the bottom of the coil, you will see a drain trough and should be able to locate the drain hose connection. This tray must be cleaned out and try pouring water slowly in the area of the drain to clear it. Lay something down to protect you're floors and so on, but this has to be cleaned out so that the normal condensation can drain. Good Luck, and be safe on the ladder, Sincerely,

Posted on Nov 17, 2009

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