Hey guys... I'm going to switch over to using an extended 1 ton van for applications this year. I think I've got everything figured out on how I want to set this rig up, but was wondering about one thing. Since this van is obviously going to keep my skid out of the weather, I'd be able to have solution in my skid on nights when temps are scheduled to drop below freezing. Since there wouldn't be any wind-chill effect on my skid, the way it was exposed to in the bed of my F250, I should be ok, even if the temps drop down into the low 20's overnight. Having said all of this, does anyone here know of a type of heater I could use in the back of my van (for insurance purposes) that would use some type of latent heat? It wouldn't have to put off much heat at all to keep my cargo compartment above freezing. Since I'm going to build an airtight bulkhead that separates the cab, from the cargo area, this heater would only have to heat the cargo area. I'm asking this, because I obviously wouldn't want to chance putting any type of heater in the back of my van that would risk throwing sparks, or have any kind of open flame. I'd swear that I've seen a heater that just warms up an outer shell, or something. There's no blower to it, or anything. Even a blower could possibly throw a spark. Anyone know of a heater that would be safe to use for this purpose?