Vortex patented technology changed the cleaning industry forever. Some owners call the BIG Truck a "new revolution in cleaning". We call it Xentherm. (Pronounced "Zentherm")
Before the introduction of the Vortex, PTO cleaning machines were limited on the amount of energy they could collect from the van's engine for heating water. This was because there was no system in existence that could collect the wasted energy of the truck's exhaust system without potentially freezing the heat exchangers, or having to re-route the vehicle's exhaust system into the body of the truck or near the operator.