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Are there any other styles of tent heaters out there? I've used the Mr. Buddy ones before, and while they do work, they put out a lot of moisture while burning.
When it's really cold, for extended periods of time, any moisture is bad - you can never get items (like sleeping bags) dry. I'm looking for something that will help warm the back of a pickup bed with a topper on it.
Are there any other styles of tent heaters out there? I've used the Mr. Buddy ones before, and while they do work, they put out a lot of moisture while burning.
I agree the obvious solution to condensation accumulation is ventilation, the problem is that ventilating when the outside temperature is -40 (or colder) quickly negates any temperature increase from a propane heater.
I've long hoped for a gasoline or white gas version of the diesel Webasto heaters used on semi trucks up north. Something semi compact & rugged enough to be mounted under-hood or even under the body of a vehicle, with heating ducts into the cab or sleeping area would be great.

Espar makes petrol (gas) fired air heaters and water boilers. They have a much restricted selection, but they are available. You are restricted to the Airtronic 5 and Hydronic 4 & 5 models. Espar HeateR Systems | A World of Comfort | Coolant HeatersI've long hoped for a gasoline or white gas version of the diesel Webasto heaters used on semi trucks up north. Something semi compact & rugged enough to be mounted under-hood or even under the body of a vehicle, with heating ducts into the cab or sleeping area would be great.
For warming my RTT I wanted something small for when family is along, pre-heating the tent a bit before going to sleep and before getting up. I bought a Mr. Heater "Little Buddy" at Gander Mountain and used a $5 coupon (GMTN5) along with free shipping for $54.95 total
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Once I have it I'm thinking of making a hangar from the tent's center support to hold the heater above the bedding.
how did you have it up in your RTT? how long did you run it, and what is the longest amount of time you ran it in your RTT? i like the idea....
a buddy of mine wired an electric blanket into his RTT with a dash mounted switch.