Question about Coleman Mach 15 Air Conditioner

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Water leaking from A/C

When it rains I get a lot of water leaking thru the ceiling around the air conditioner. Is there some sort of seal that is failing here and how would I go about replacing it?

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Ok this unit should have a silicone seal around the pan so water does not collect under it if old silicone is worn away scrape old silicone away and redo new silicone around unit so it sits properly make sure all the water is gone before sealing because you run the risk of mold build up under it; let it dry or help it dry thats up to you

but would like little more info on what this is on

Posted on May 07, 2008

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Our penquin dometic air conditioner in the bedroom pours leaks lots of water when the unit is on during rain storms. Water leaks into the ceiling and also out the unit.


Sounds like base gasket at roof is loose or defective to start with. Try removing ceiling assembly enough to tighten 4 bolts that secure roof unit to inside bracket. Do not compress too much, just snug them all evenly and see if water slows or stops. If not, you will have to remove upper unit (roof) and replace gasket and re-secure but don't tighten to excessive, only compress gasket approx half of original thickness. Also make sure upper unit is aligned properly with opening of roof.

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I have a travel trailer with a coleman 7300 roof top ac unit. the unit will blow cold air but water leaks thru the plenum. i was told by the previous owner that it needs a new seal. i would like to fix it...


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1 Answer

When it rains hard and there is a lot of wind the rain gets into the chimney and drips through a ceiling light. Is there a chimney cap that I can buy that will eliminate the problem?


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I suspect water is seeping in under my AC unit...


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