I gutted, insulated, and built my grand caravan into a small camper. This heater sits under the bed in the rear stow n go bucket. I mounted the diesel tank to the side, by the tailight.After about a month of use a few days a week, the thing started spewing white smoke out the exhaust AND the intake AND into the cabin. This is not uncommon and a fairly simple fix. I took apart the three pieces and cleaned them with kerosene. The glow plug screen (sits around glow plug, fuel passes through) and the thermal gasket (sealing the burn chamber) both had to be replaced. Some friends told me to try Espar. I searched for dealers (2-3 in a Las Vegas size city) and went to one. Turned out that the parts for the Espar D4 fit this heater. You cannot use a self made gasket sheet from a car parts store, the material will not withstand the heat.ProsEasy to installSimple design, easy to maintainKnock off of espar D4, easy to find partsSometimes too hot at 1.2kw (lowest) (in Wisconsin winter)Uses very little fuelUses little electricity after start up (drops ~0.2V)I run mine off a small solar battery bank that is occasionally connected to the alternator while driving. Do not drive with the heater running.ConsThe fuel pump... thunk... thunk... all nightComes with crap gasket and glow plug screen that burn out quickUses what I think is ~120w during startup cycle for ten minutes, which takes longer when frigid (~0 F) or sometimes not at all (about -20 F)