I live in an older house with central a/c in the attic. Over the years, I've religiously cleaned out the drip pan so it wouldn't overflow and drip through the kitchen ceiling. However, this year has been different.
Even though I've done the bleach treatment and cleaned the pan with a wet/dry vac, the drip won't stop and the kitchen ceiling will need major repair. I called my a/c repairman, who blew out the drain line with CO2. But he said that the only permanent fix would be to move the a/c unit up off the attic floor, so the drip pan could be elevated for better drainage. And this would cost me about $1,500.
Since this is the only time in nine years that this has happened, isn't it a better bet that a) the pan is leaking, or b) the house has shifted, and the pan has somehow gotten un-leveled? Granted, having the a/c unit right on top of the drip pan probably wasn't the smartest move, but I'm not an expert. Any suggestions, or would the a/c experts reading this need some photographs of the setup?
TIA,
JS