My central air conditioning unit started leaking water from the bottom were the filter is. I have a larg bucket under it. Its located inside a closit in my hall way. It has no other problem, it is runing fine, nice and cold. Can anyone help me? I don't know if its going to breakdown on me or what.

 

The condensate drain is blocked. It is about the only thing you can fix without being certified to work with refrigerant. There is a large pan inside the unit that catches the water that condenses on the coil. It runs out to a small drain pipe a and goes to someplace safe. If mold builds up and clogs the drain (usually the trap) the pan overflows. Go up and look for the drain pipe. It will probably be plastic pipe about an inch in diameter. See where it goes and if there are any fittings (like a tee) in the pipe just outside the unit. I always install a tee so it can be opened and cleaned. If the pipe runs to the outside of the house, you can suck the clog out with a shop vac. You should then put some clorox in the pan to stop algae growth. If I have missed anything that would make you understand this problem better, put the new questions up here and I'll try again.

Ken

 

Thank you! you are a life saver. That did fixed the problem.

 

Same problem, except that it appears that the pan that hold the water has rusted so bad that there is now a leak in its side.
Is there anything that I can use to repair this leak?
It doesn't appear the pan can be removed and or replaced.

 

The pan can be removed and if the unit is too old a replacement pan can be purchased from the manufacturer...if you find a decent hvac firm who is willing they can also fabricate a new pan for you. A shop I once worked for would do this but not many will...the only other recourse is to replace the whole coil pan assembly and this will cost several hundred dollars if not more.

You could try and drain the water from the pan and then use some kind of silicone caulk or epoxy to seal the rusted area...just put on a big glob after cleaning the pan real good and spreading it out over an area larger than the rusted hole. It might be hard to do but if you are up to it this might help put off the inevitable pan replacement for a while at least...give you time to save up for the new coil or air handling unit.

I would try it if the leak did not pose much of a danger to carpet, drywall, ceilings etc...