Hybrid electric/propane tank-less water heater

Heating water for "on demand" use requires an incredible amount of energy which must be available . . . . instantly. Look at the size of the gas burners that come with residential instant hot water heaters. It's not impossible with electricity, but not very conducive to RV use.

I could easily see that requiring a 100 amp 120/240 volt service which would be unlikely in all but the most exclusive RV parks.

Chum lee