usually a piece of duct is left hanging in your tank area...so you will be heating the underside w/propane, some insullation would be nice in this area and not just a plastic or tin covering on the bottom, it is something you should add later if none is there. you can also get heat pads for your tanks but they will suck a bunch of pwr. a major concern if dry camping.
who left the light on?"> is it me or are we leaning downhill."> where did the dog run off to">
Our DSDP has a blower that runs when the furnace is running and I have the switch on. It vents out right on the water pump and in the wet bay. Seems to work as I've never had a freezing problem. BUT I usually stick a light bulb with temp sensor plugin in that bay also since I don't run the furnace when winterized.
It means whatever that manufacturer wants it to mean. There is no industry standard on feature claims.
It could be a fully insulated, separately heated basement. Carriage does this. But they don't call it an "underbelly" they call it a basement.
It could be a sheet of unwoven plastic fabric stretched across the bottom, with bleed air from one of the heat ducts, or simply that heat from the above floor soaks through to the space below (I've seen "heated underbelly" claimed for that situation in a number of low price TTs from major manufacturers).
Or a lot of things in between.
So have the person trying to sell you the RV show you exactly how this space is made to retain heat, if that is important to you.
If winter use is important, what you want is a TT that puts all plumbing inside the heated living environment, or in a heated basement, rather than below the floor in an underbelly. That's fine for 2-3 season use, not for winter.
What exactly does it mean when they say a Travel Trailer has a Heated Enclosed Underbelly?
More likely than not, it is only an enclosed under belly with heating duct work running through it. It may, or, may not have a duct actually blowing warm air into the belly. Only way to know for sure, is to have the sales person show youw how it is heated. This could involve opening up the belly.
Your profile shows a Colorado location. I would guess the weather gets a bit cold and an enclosed belly with ductwork running through, would provide very little protection. Up to you, how cold you want to trust using it.
My last TT had enclosed/heated belly. It was only ductwork running through. I used the TT (one time) for deer camp in North Dakota. Daytime temps were 30's and 40's with night time temps as low as zero. We were OK until it was time to dump tanks. They were froze.
Current TT has enclosed belly, with ductwork running through, and electric heating pads on tanks, drain lines, and dump valve. In minus 10 degree weather, even this system has had minor problems.
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Mine is as others have described - A switch sends some heat from the furnace into the enclosed underbelly. Quite honestly, I have mixed feelings about the underbelly being enclosed. I live in Louisiana where it rarely stays below freezing for more than a few hours at a time, yet, when work needs to be done in that area, the cover to the underbelly has to be dropped adding to the aggravation and expense. On a recent trip I did something stupid and caused a minor flood inside the trailer. By the time I got home, the weight of the water that had accumulated in the low part of the underbelly had pulled the corrogated plastic material loose on one side of the trailer. I would have had to have taken it down anyway to let the insulation, etc. dry out, but having that area open would have been nice on that particular occasion. At least I could use the heat to make the drying out go faster. Bottom line is that while I see good and bad points to having an enclosed underbelly, living where I do, I would probably prefer not having it. Guess I could have it removed, huh?
* This post was
edited 06/19/09 12:18pm by MotherOwl *