Rain water going through furnace exhaust port into trailer!!

[Oregontrx4]

I have had water in the underbelly that I have been trying to figure out. Well I bought a scope for my camera and noticed that below the furnace exhaust the insulation was wet. I cut out the underbelly and the insulation was for sure wet. So I started wondering whats stopping water from blowing into this port and where would it go? The answer from what I can tell is that nothing stops the water from going in and it fills my furnace with water and then leaks into the darn belly of the trailer. Not even sure how to fix this. Maybe a vent outlet that has a hood? My current one is flat. Not sure why the pics are upside down.

[Oregontrx4]

I ended up removing and drying it. I then put a groove in the furnace plastic pipe so that water can drain outside. I also raised the trailer slightly while in storage to help the water drain out. Last, I cut a hood that screws to the top of the vent that should deflect water but not obstruct the vent.

[Parrott]

I would coat and seal that exposed wood. Gonna rot over time. Make sure your control board didn’t get wet also.

[norty1]

Could you post a picture of the hood you fashioned? This is not a problem that I have heard of very often. Thanks for posting your solution.

[jetlag]

ours, water gets in around the rectangular door to the furnace. Board replaced once under warranty, and the new one has gotten wet, quit and worked again yesterday after it dried up, I am guessing. I mentioned this at the dealer, and nothing was done. Now to figure out how to seal the compartment.

[Oregontrx4]

It should be noted I think the when jayco installed the heater the attachment from the outside points down into the trailer ever so slightly when it should point outside to help shed water. The heater was much easier to remove than I expected.

[Rustic Eagle]

Originally Posted by Oregontrx4

It should be noted I think the when jayco installed the heater the attachment from the outside points down into the trailer ever so slightly..........snip

I had a similar problem, but fortunately it didn't divert any moisture inside.

In my case the floor mounted furnace wasn't resting flat on the floor (at wall) which put the weight of the furnace on the outside plastic exhaust pipe extension thus compromising the outside exhaust pipe assembly.

I found that Jayco's clearance hole through the wall was located 5/16" to high..., so I modified the clearance hole so the furnace would rest flat on the floor resulting in the outer exhaust pipe assembly fitting properly into the furnace exhaust pipe.

Bob