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Old 05-25-2015, 03:04 PM   #21
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Name: Dale
Trailer: Trillium
Saskatchewan
Posts: 80
Quote:
Originally Posted by WaltP View Post
I guess I don't know what a gravity furnace is. I gather it's not the propane furnace commonly used in RVs these days.

Walt
The gravity furnace is basically a bbq burner in a box on the wall. It doesn't have a fan or forced air capability and just radiates heat throughout the trailer (i think it loses as much heat on the otherside as enters the trailer) They aren't very efficient and the surface temperatures are very high. I want to keep it for late fall camping off grid, and to keep it original... but the majority of the time i will stick to my small electric heater as its much more comfortable.
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Old 05-25-2015, 03:12 PM   #22
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Name: Walter
Trailer: 2017 Escape 17B
SW Virginia
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Thanks Dale
I don't think I've seen any like that on a trailer or other RV. Sure doesn't seem like a good option.

Walt
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Old 05-25-2015, 03:40 PM   #23
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Name: Dave W
Trailer: Trillium 4500 - 1976, 1978, 1979, 1300 - 1977, and a 1973
Alberta
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Walt, don't be so quick to judge. While it is true that a gravity furnace is not very efficient, and the surface temperature gets quite high, they also require no electricity, and provide enough heat for three season camping. They are light, (ish) simple, quiet and fit nicely over the wheel well. Typically they use space that otherwise would be wasted.

Here is what they look like:
http://www.fiberglassrv.com/forums/f...tml#post174423

Here is what they look like when taken out:
http://www.fiberglassrv.com/forums/f...wer-54226.html
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Old 05-25-2015, 03:56 PM   #24
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Name: Walter
Trailer: 2017 Escape 17B
SW Virginia
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Thanks for that David. Interesting for sure. I've never had one of course, but like so many things, some pros, some cons. I can see the benefit of no electricity, but I think I'd choose a Wave 3 if that were the issue.

Walt
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Old 05-25-2015, 04:13 PM   #25
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Name: Dave W
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Down side to a Wave 3 is that the products of combustion remain in the trailer. Mostly this is water, causing condensation, but if you don't leave a window cracked open, and the O2 level falls, then a Wave 3 will start to make CO. That stuff can kill you.
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