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BobsYourUncle's avatar
BobsYourUncle
Nomad
Nov 04, 2015

Adding enclosed heated underbelly. Can it be done?

Perhaps an odd question but has anyone taken a regular 3 season TT and added the enclosed heated underbelly? I am not too familiar with what they do at the factory for this option but seems like perha...
Huntindog's avatar
Huntindog
Explorer
Nov 04, 2015
Old-Biscuit wrote:
The factory doesn't do anything special
Flexible ducting is just attached to furnace discharge plenum, cut a hole in sub-floor the run end of duct down by tanks.








UltraHeat Products
My TT wasn't even that complicated. My heat ducts ran thru the floor. A main trunk line with floor vents rising from it. All the factory did was cut a hole in the bottom of the trunk line to let heat into the underbelly. Crude but somewhat effective. When I did my custom arctic upgrade, I cut an additional hole in the fresh water tank area.
I also improved the insulation a lot, and ran heat tape on all of the water lines.

As for dumping, my valves are located in the heated underbelly, with long rods going to the dump handles outside the belly. This means that the pipe that the sewer hose is attached to is empty except when dumping.

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