Question about Dometic Rooftop RV Air Conditioner

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Air conditioner leaks/drips from filter inside travel trailer

I have a 2000 Rockwood Roo that has an issue with water dripping inside the trailer from the air conditioner's filter when running the ac unit?

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  • bnvb Aug 04, 2008

    duotherm dripping water from ceiling vents and now the thermostat runs aux. heat (we don't have), and will not run the air.

    Thermostat reset as if we have several zones. book says the manufacturer sets this so gives no info.

  • efulton4 Aug 04, 2008

    leaking water inside camper when ac is running

  • msucheermom Aug 17, 2008

    Duo Therm Air Conditioning unit is leaking water inside my motorhome. It is much worse when it rains; however, it leaks regardless of the weather. The back unit does not leak at all.

  • samcc Aug 24, 2008

    we have a almost new ac in our pop up that is a carrier ac, and it leaks inside the camper when it is on also. My husband doesn`t really know what to do.



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Either your 14"x14" a/c gasket is lose on the roof allowing the condensation to flow into your RV or you have a cracked condensation tray under the evaporator. I'm guessing the later


Posted on Aug 14, 2008

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The drain is stoped up/ or something is blocking the drain causing the water to run over the drain pan then the water will run in the camper through the filter -take the cover of and check to see if something is blocking the drain

Posted on Sep 09, 2009

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Got to go with JGRV on this one. Try snugging down the bolts that pull the upper unit down to roof, and also have a good look at the gasket/seal at roof, when looking up through. These units have been known to have cracked trays, which would require close inspection from up top with cover off. When you take the cover off upper unit (roof) be aware that you will most likely be met by a bunch of Mudwasps &/or yellowjacket bees, so have spray ready, or wait until cloudy day, when they are not so lively.Make sure the mudwasps didn't build nests in such a way that they have dammed up the run off of the condensation from unit, and make sure all your drain holes are open. I have been told that an RV bathtub repair kit has been used on occasion to try & repair the crack, with some success, but personally, I wouldn't waste my time. If i was going to try anything, I'd probably try the spray aerosol "stop leak" that they use on the plastic eavetrouphs for $5-$6 / can, after cleaning area thoroughly, and let it sit for 24 hrs, and turn unit on and see what happens, if leak not stopped, I'm only out a few bucks & an hour of my time.Then I'd start pricing another unit.Keep in mind in my experience Coleman are less likely to have the cracked tray, as they use styrofoam in most cases, but I have had the odd coleman do it too, just not as many as dometic.

Posted on Aug 27, 2008

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The a/c could be slightly leaning toward the inside letting the water drip in or the drain hole which allows the water to drip outside could be stopped up. Find the hole and blow through it with compressed air to unstop it.

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Air conditioner condensation is leaking in the car

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