DaHose wrote:
Holy cow!!!! 122 gallons of fresh water? You are packing some serious hydration. I am not sure exactly how much I have. I think it's a 40 gallon tank. With three of us in the RV, we can make that last the weekend but not much more.
The grey fills up quick and we don't have a transfer pump. It's on the list of items I might add.
As to gas usage, I would need to see published comparisons. When I looked into home based tankless systems, the price difference on fuel usage was non-existent. I can't imagine why there might be any difference in results when looking at RV based systems.
I run a tankless commercial (180 degrees possible) heater for my hot tub. Everyone said "don't do it because you have a salt chlorinator", but it has been working AWESOME for a couple years now. I flush once a year with CLR and it keeps the exchanger flowing nicely. For the right application, tankless is great.
Jose
My 122 gal is on the small side. Some newer toy haulers carry 160 gal & have onboard power washers. Propane usage depends on how you camp. I wash dishes once a day & shower once a day so with my Truma I am only using propane maybe 20/30 min a day. It doesn't run while sitting around the campfire all night reheating the 6 gal tank. The difference on a home comparison is a 6/10 gal in an rv vs 30/60 gal tank @ home. My propane usage has dropped a lot. I did field testing for them all summer last year. Had it not worked I would have put the tank back in. Even in summer @ 7,000' it got down into the 40's. The Truma exausts through a plastic grill. Still haven't figured that out but it works.