Rain coming in from heater exhaust.

[TxTiger]

When there is a blowing rain, and water gets inside the heater exhaust vent, I get water leaking below the heater and under the cabinet. The outer area is well sealed. The heater is an Atwood, not sure of the model. It's either a 7912, 7916, 7920, or 8012. It appears by looking at the unit diagram, it must be an issue in the exhaust vent box or tube not sealing correctly. Wondering if anyone has had an issue like this, or any suggestions on what the problem may be.

[Joe417]

Someone on rv.net had a similar issue years ago. Turned out the heater exhaust tube had been cut too short to extend completely through the wall.

Another thought, could the exhaust pipe be rusted/have a hole.

Better check that one out.

[lots2seeinmyrv]

We had rain pour down the side and up into the Furnace Cover Exhaust Grate.

We bought one of these...

Drip Cap

Took the whole Furnace Cover off. Spray painted the Drip Cap Black. Mounted it with a couple screws and a bead of caulk. Put the cover back on.

Problem solved...the rain runs down the side and not back up into the vent holes.