I would look forward to hearing the outcome of your point #2 issue with the heat duct.

We have the same issue with our 2014 Southwind.

Could this lack of air flow also have an affect on the heat flowing to the fresh water and holding tank compartments to prevent freezing during winter travels?

Please post any followup info.

Our '13 Bounder propane heating system has never produced much warm air in the rear.  I looked at the vent lines and found the line going to the rear is smaller than the other lines.  Air takes the path of least resistance so more comes out the bigger vents.  I closed off some vents in the front and that help a little.  We have had nothing but problems with the vacu flush system, so I have no advice but hope it has improved since '13.

I'm reading all the posts about issues with air flow to some of the hot air furnace ducts.

I just spent a couple of hours removing panels and checking an issue I have with no air into the mid cabin bath.

The furnace has 4 - 4" air ducts and 1 - 2" duct.

Two 4" ducts have good air flow into the main living area, 1 - 4" duct also has good air flow into the rear bedroom.

One 4" duct blows hot air into the basement to protect the plumbing, and it also has good air flow.

The 2" duct leading direct from the furnace to the mid cabin bath has no air flow at all.

I have pushed a wire fish through from each end and there is no way to get it to pass all the way through!

I assume there are at least a couple of 90 degree bends in the duct, but that would not "stop" any air flow.

My best guess is that during assembly, Fleetwood kinked the 2" hose severely enough to completely block off any air flow.

It's not a big deal, but obviously sloppy assembly work, and something Fleetwood never checked at the factory.

For those with air flow issues, you may want to try running a wire fish through the ducts, and also check to ensure the duct is attached properly to the furnace.

One of the other things I did during my examination of the ducts was to remove the actual duct from the furnace to confirm air flow.

If it is flowing strong out of the furnace and reduced at the vent, then it would make one think that the actual duct is blocked or kinked.

Just another thing to check.

James Donaldson wrote:

RE toilet with power vacuum flush:

We have a Bounder 35K.  Both toilets have leaked very badly  since day one around the base and would not hold vacuum. My very new unit has spent at least six months in the shop for this issue, and at least 4 months for other things (that’s another story).  Each time they “fixed” something but the problem only got worse with sewage running Into the bedroom and out under the fireplace into the living room.  The smell was awful. Simply said I was not believed by the service people at La Mesa. I had to provide pictures etc.  Finally Fleetwood said they had a “reinforcement kit”  for it. After a months wait the kit was finally installed. We camped once since then and no leaks but do still have an issue holding vacuum sometimes. Keeping our fingers crossed. Good luck. 

James,   We have a 2018 Bounder 35K...    Our toilets vacuum system always ran a lot. I removed the mid bathroom toilet and found that the hose clamp to the vac line was completely loose. tightened it up and now the vac system does not run a lot..  This had to be a factory screw up.

Also I just found out that we get no propane furnace heat to the rear bedroom & bath.  This is due to 2 crushed places that the factory did on the 4" round heat ducting. A Factory screw up again!! Quality control really seems to be lacking at Fleetwood!!!   I am not a happy Fleetwood customer. I am presently working with Lazy Days, Tampa to see if they will address the crushed 4" heating duct issue....