Water Leak from AC unit stained ceiling material

Question

Hi hope to get a little advice. We had a steady rain for over a day last week which resulted in some leaks at my front AC. By the end of the rain I saw a drip and realized water had come in enough to soak the ceiling material. I plan to have the gasket replaced this week. My question is will the gasket wick enough water to leak through or is the water leak caused by leakage between the gasket and the roof. Today at home I ran a hose and flooded the roof with water around the AC but no water came in. Thanks for reading this and would like to hear your thoughts and experiences with AC leaks.

Rich

jr45 · Answer

Have you pulled the inside cover and checked the 4 long bolts that hold it down. I pull my cover and there was 1/4 to 3/8" space on the bolts on both AC just need to be hand tight.JR

rich_racin · Answer

thanks I did check the bolts they are tight  actually tightened them a little more but am not sure how tight they need to be.

old-biscuit · Answer

The bolts just need to be 'snug'-------something like 40-50 INCH lbs.

The roof gasket is roughly 1" thick and gets compressed to 1/2" thick.
If you compress it more than that it can warp and not seal between bottom A/C pan and roof opening. The gasket is all that seals the unit.

Under the shroud is another cover that encloses the evap coil. If that cover is not properly sealed water can get into that area which is open to the inside of rig.

dougrainer · Answer

rich racin wrote:thanks I did check the bolts they are tight  actually tightened them a little more but am not sure how tight they need to be.If you cannot see more than 5/8 inch of the compressed gasket, it is overtightened. IF the gasket gets too compressed, the 2 drain holes get blocked off for the Evap condensation. Especially if you have RVP(Coleman) AC units. This means you need to replace the AC gaskets. Doug

rich_racin · Answer

thanks Old-Biscuit that is good useful info. I will add that to my notes.Rich

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Water Leak from AC unit stained ceiling material

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