So we were out camping over Memorial Day, running the air conditioner. The dripping problem was so bad we had to lay towels and a bowl on the floor. I vowed to fix this when we got back. I know that the problem is condensation running off the evaporator and then into the air return vents, then onto the floor. Today I went on the roof and took off the plastic shroud to search for the drain holes everyone talks about, none to be found. Took off the sheet metal shrouding that covers the evaporator and air return, took off the sheet metal sides also. It turns out the evaporator sits in a plastic tray and on each corner there is a recessed hole with a drain hole in the bottom. Condensation drains into the plastic tray, runs in the recessed hole, and through the drain holes onto the roof. The fault here is the recessed holes actually sit on my roof, blocking the drain part. Some people said that your mounting gasket is compressed to far if this happens, but mine is not, just poor design of roof or air conditioner. If the roof was not completely flat, this wouldn't be an issue. I cleaned out the area with compressed air (there was water sitting in the recessed area). I decided to drill an additional drain hole at an angle so it would come outside the side of the recessed hole instead of the bottom. So the drill bit would not drill through the roof material, I slid a piece of sheet metal between the roof material and the plastic tray, drilled a hole on each side, blew the chips away and put it all back together. No more water dripping in the camper! It all goes on the roof now. Sorry, no pics.
2015 Starcraft Travel Star 299BHU Black Pearl Edition
2011 Jayco X23J (traded in)
2009 Ford F150 FX4 SuperCrew