Community Forums

mn.roadking · 06-06-2023, 01:54 PM

Anyone have an idea why Winne would use styrofoam ducting behind the rear cap? Noise isolation maybe? I am wondering if I should replace it with tin and be permenant.

Ranger Smith · 06-06-2023, 02:00 PM

Quote:

Originally Posted by mn.roadking

Anyone have an idea why Winne would use styrofoam ducting behind the rear cap? Noise isolation maybe? I am wondering if I should replace it with tin and be permenant.

I would think with tin it would be hotter with engine heat. Even the tin needs insulation over it. I would just make sure it is sealed well. Mine had an air leak when I had my Journey. If it aint broke . . .

DancinCampers · 06-07-2023, 04:23 PM

This type of ductwork is used in many commercial buildings. I think the problems with Winnies install is that the side sealed is not placed against the wall. And the few amount of attaching brackets.

Ray,IN · 06-08-2023, 08:21 PM

To patch leaks I used a broomstick and a yardstick to apply metallic duct tape. That was 2013 and it's still holding.
On my MH I had to remove the sheet metal around the rear engine access to expose the ductwork.

2004Horizon · 06-09-2023, 09:35 PM

I love my basement AC, after I fixed the seams problems the OP decribed.

And I would never buy an RV with noisy roof ACs.

All you need to do is seal your duct joints and you too will love your basement AC (again).

Winnebago cheeped-out on insulating and sealing the vents on the rear cap, but this is not reason to run away from the basement AC configuration so many people complain about, when all they need to do is fix their venting problems.

Hikerdogs · 06-10-2023, 10:18 AM

Our 2001 gas powered Adventurer with the basement air did have tin ductwork. Many of that era had a problem with the tin ducts detaching where the elbow went from the vertical to the horizontal. When that happened the cold air never entered the living space.

We had that problem early on. It was a beast to repair since there was almost no room between the end cap and the ductwork.

I'm guessing they went to foil lined Styrofoam in diesel units to eliminate connection problems and minimize noise from the engine compartment.