A new style of Espar (Eberspacher) heaters are now available. Since my van will reside in higher elevations mostly, I need a way to keep it warm and possibly heat water for hot showers too. From the Heatso website there is a new RV kit that does it all but at a hefty price tag. https://www.heatso.com/espar-ebersp...ol-rv-camper-kit-for-water-air-floor-heating/. It will heat water, heat air through a water-air heat exchanger/blower and also can be adapted for radiant floor heat which would be the ultimate in comfort. My van currently has 2" of polyiso foam under a 3/4 plywood floor. The plan is to cut a 3/4" groove and lay in randiantec heat transfer plates with Pex tubing and cover it all with a nice bamboo floating floor. Here is the method I will use to install it: https://www.radiantec.com/installation-manuals/installing-tubing-within-a-subfloor/. Im now emailing Heatso to see if I can get a simpler kit with only accessories for water and hydronic floor heat. $2300 is just too expensive.