Why do people want to heat up untreated water. Bonkers
1. It keeps me working down to about -5/6
2. It keeps my hoses nice & supple all day in winter
3. The tank acts like a giant radiator & so NOTHING in the van freezes overnight in winter
What more reason could you want??
The water then just gets pumped through my on-board DI vessels as normal to purify on-demand.