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We have a 1990 60,000 btu HVAC with the unit outside and the 2nd half in the attic. Water keeps accumulating in the attic below the attic unit and overflowing into the ceilings and wall. It cools fine but our ceiling has been patched each time we are told it has been repaired and yet another leak. Is there a drainage hose missing/clogged or what would be causing this. I realize it is an old unit but this is a Bed and Breakfast and at this time we cannot afford to replace as we need to do the entire place. This unit serves only the upstairs. Help!

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Hi, this is a very easy problem to solve. The air handler and evaporator coil is in the attic and this is where the condensation collects in the pan. At some point on this pan is a 3/4" drain for this water to drain to the out side of the building. Its plugged up and running over onto the sheet rock causing all of this damage. Someone needs to get up to this unit with an air tank with nozzle that you can buy at a auto parts store that they fill with air to air up tires and blow out this line. You can walk the perimeter of the building and you will find this drain coming out the wall, it will either be white PVC or copper, a elbow that drains. The pan will need to be cleaned out after the drain is unplugged by flushing with water or use a brush and try and clean it up, what ever is easier to do. This is the only way to solve this as I have seen this happen so many, many times. Believe me, this will take care of this problem. Please don't forget to rate me and I know you will be kind. I will check back in with you and you can keep me posted. I wish you the best.
Sincerely,
Shastalaker7
A/C,

Posted on Sep 01, 2010

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