Thor Forums

[TurnerFam]

I think that it's likely more the 'access door' than just the furnace outlet itself. Water runs down the wall of the coach, over and into the top of the access door, and ultimately into the furnace box itself. When it's there, it will find the lowest and easiest path, probably back into and thru the furnace box, which is inside the coach, usually under a cabinet, and eventually onto the floor, etc.

Our outside storage bay doors all do this, as well, and I've constantly struggled to find the 'answer' to this. I've added additional seals to the inside top of each door frame, but it seems to not completely stop incoming water, even if only small amounts.
My ultimate correction is one that's not a popular thought: using an 'eyebrow' type diverter over each door frame, like the ones used above car side windows. Probably not many of us want to go that route, though.
I used this same type of solution, right above my bedroom driver side 'exit' window, which allowed water in the inside frame of the bedroom during rain when the window was open(push out type window). It works fine, though I hesitate to do it on all the storage bays - that would be very noticeable, especially when traveling.