howdy,
any electric tankless hot water heater that will service our RV's is likely to take too much current to run. you would not be able to run anything else in the coach, so you better like hot water better than everything else.
if you just wanted one to heat the water at a sink, yea, that is possible, but not for the shower.
in a nutshell, when the raritan rusts out, here are your options.
1. replace it with a new raritan....pros, it is essentially the same (though not exactly) cons...it is pricey. you have hot water while driving and a large hot water heater when parked and plugged in. ( i count the seward in this category as well)
2. replace it with an all electric one of similar size from home depot etc. pros....cheaper cons....no hot water from engine coolant.
3. put in a propane one. pros....not sure there are any in my mind....cons....smaller tank, a ton of work to retrofit...not much cheaper when all done.
4. enjoy cold water....pros....cheapest of all and very quick showers so water conservation....cons....not so pleasant when cool outside.
happy friday
tom
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