Hello, this is my first post on this forum, and it may seem like diy, but here I go... Me and my brother replaces a dead amana 2.5 ton air handler with a goodman 3 ton ARPT air handler. Someone else did the line brazing and charging. 2 weeks after install, the ceiling below started dripping water. We pull down the damaged sheetrock to find nearly a gallon of water on top of the sheetrock under the intake plenum. Our first theory was that an air leak at the bottom of the plenum was allowing attic air to hit the inside of the plenum and cause condensate, which runs back out. The leak is outside the drip pan underneath the unit, where it hits the insulation and runs down to ruin the sheetrock. At first, we pulled one of the return pipes off and filled the gaps with spray foam, and double taped all joints. No good. With the side panels off, we noticed the water was having issues going down the drain, so we gave the intake side of the unit a 1" rise, to keep the water from running into the plenum. This caused the water to leak out of the exaust plenum on the other side of the unit. We had another theory when we took the side panels off again. We saw that the unit was sloped from side to side, causing the water in the drainpan inside the unit to collect on the side without a drain pipe (this tilting was not our fault, we tipped it in a different direction). We also saw signs of water being picked up by airflow and being thrown toward the blower fan, wetting the inside of the case, but fortunately not the motor or the control board. We then turned the blower speed down to attempt to fix this issue. and that was just this morning, don't know yet if that will fix that issue. Please give me and my brother some advice. I just thought of some more details. one, my brother noticed that the intake filter(not in the unit, it is in a wall register) had collapsed from pressure against it. This made us turn the fan down. Two, with the unit off and the sidecovers off, we poured several gallons of water inside the unit to see if the internal pan was leaking. That checked out good. We have not seen water in the emergency pan beneath the unit, which is odd. And third, the condition gets worse if you set the unit to fan auto, and cool. It gets better if you set the fan from auto to on, leaving the other settings alone. And please, to the moderators, don't delete my post, this is an urgent issue that must be fixed very quickly, due to the fact that we are trying to refinance the house. thanks in advance.