Dripping from AC Inside Coach - In Florida

High humidity means more water is removed from air as it flows thru evap coil.
The condensation collects in a drip pan under the evap coil and then drains out thru couple drain holes in pan.

The water flows down the roof line OR there can be drain tubes connected to drip pan.

The drains are plugged and the drip pan is full and overflowing.

Have to remove roof shroud and then open sealed compartment where evap coil is.
Clean out the drains on drip pan.

Most likely your filter is plugged up...when was the last time it was cleaned..?

When the filter is dirty, air cannot flow properly and the A/C ices up. That ice, as it melts then drips into the coach. There are two things you need to do..

First, to melt the ice that's formed, simply run the A/C on FAN ONLY for about 30-45 mins. That will get rid of the ice.
Second, clean the inside filter. While you're at it, clean em both....Dennis

In addition to what Dennis said, it may mean one of 2 more things...a roof AC has a foam compression gasket that has to be snugged up to the roof on occasion with the bolts located inside the coach air return cover. Snug only do not get it too tight.

If that doesn't work plan "B" is to replace the gasket on the roof under the AC unit...best left to the pro's if you don't want to work on top of your rig.

The other possibility is that the drain holes on th roof AC unit are plugged with leaves or debris...meaning the roof AC units schroud needs t be removed and the drain pan holes cleaned out...again not an easy DIY task if you are unskilled!

Good luck!

Need to know a few things.
You have a 2001 Dynasty. Do you have drain thru the roof and NOT off the top of the roof. Most Hi line Monaco's your year has that. Do you have Heat Pumps or regular AC. Monaco used Dometic Penguins your year. Do you have the 4 button wall tstat or the 5 button wall tstat? Answers to these questions will get you the answers you need. Doug

Just pull the filter out and see where the dripping is coming from up there. I had that problem when I was running the back AC and company was over with the front door wide open and the front AC off. There was soo much humidity coming from the front of the coach that all of the metal on the AC was accumulating condensation and dripping. Obviously that was an extreme situation but looking up there with the filter off while it is running and dripping will help a lot to solve the problem.

The filter is clean and I don't have ice build up, but I suspect the condensate drip pan drain is plugged, so the pan is overflowing. I'm going to get up on the roof to check it out. Thanks everyone.

I can often clear mine from inside and avoid the roof climb. Feel around to find the pan and the holes are on the sides. Just doing that will clear them sometimes; other times I spray the pan area with compressed air like you use to clear a computer.

Also, sometimes, a slight shift in level one way or the other makes a difference. Good luck

How long has it been since you cleaned your hot air intake filter on that A/C.

I have found the following things can cause dripping.

1: Dirty intake filter
2: Leveling.. (more on his later)
3: Icing of coils

When teh coils ice, well when they thaw it can drip.. Of course if the coils are icing you'd likey noice that (Air does no flow through ice like it does through coils).

Leveling: I have two differen A/C's. one dripps off the drivers side of the drip tray if the rig is tilted curb side the drip tray can over flow.

The other dripps off the rear if I'm nose down it can drip overflow.

I would like to see them designed so it can drip off EITHER side,, but alas they don't design them that way (Humm, wonder if I could modify).

And finally the filter:

When the blower is running if the filter is dirty it will build up a partial vacuum in the area between the filter and the coils, (Well the blower). This vacuum can become strong enough to suck the water out of the drip tray, (Causing a gurgling sound) into the area above the filter.. When it gets really bad this water will drip down, but when the blower stops. it falls down (Niagra style) in many cases... Took me several years to figure that out.

I think I'll clean my filters today (not using A/C but hey, why not).

I got up on the roof and checked both units. The one that was dripping has some of its insulation on the inside of the shroud covering the cooling coils missing. There is outside air leaking in heavily in that unit, unlike the rear unit. I spoke to a local RV tech, who said that is likely the main issue. I don't have drain lines from the units, so those aren't the issue. The condensation is suppose to just drain off on the rooftop, which it is otherwise doing. After taking it apart and having it turned off for a while, it isn't dripping anymore. I sense that there likely was some ice buildup causing some of the dripping. I plan to wash my filters tomorrow too. Thanks everyone.

what is happening ..u are running the ac on high ..need to run it on auto. This gives the unit time to recycle. This worked for me when I was in fl.