Tankless Water Heater

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We need to replace the water heater in our 330 Express. Thinking that it would be smaller footprint and better economy to use tankless. Anyone installed a tankless water heater for bath faucet/shower and kitchen sink? We will only use when we are at port. Not sure if a regular residential one would do or an "RV" one. Specific models would be appreciated so we can check them out. Thanks!
 

wspitler

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A true tankless water heater has a very high amperage (power) requirement and unless you’re planning to rewire to a 220 V system the smaller 110 V systems often require more than 30 A of service. A quick look found most tankless units require more than 3000 W. But I’d be very interested if you can find something with a lower power requirement. I wouldn’t be interested in rewiring 220 as that is a major change. Unless it is a very old unit, I would not write off my tank water heater as there are a few minor problems that can easily be fixed.
 
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fsc60

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I think you can buy all the electrical components separately, mine actually had a hole in it. Took it apart and the tank looks like an alluminum basket ball. Took it to a local welder shop and he put a patch on it. Still going.
 
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Joined
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A true tankless water heater has a very high amperage (power) requirement and unless you’re planning to rewire to a 220 V system the smaller 110 V systems often require more than 30 A of service. A quick look found most tankless units require more than 3000 W. But I’d be very interested if you can find something with a lower power requirement. I wouldn’t be interested in rewiring 220 as that is a major change. Unless it is a very old unit, I would not write off my tank water heater as there are a few minor problems that can easily be fixed.
Thanks for reply but nope, not planning on 220 either. Sure wish some company would make a good marine tankless. Found Hubbell but only 220
 

DennisG01

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The only tankless, 120V ones I've ever seen are "portable" camping units. I looked briefly into them a couple years ago for our camp in Maine (for an outside rinse off), but I never really went any further with it than briefly looking. I don't recall them being all that expensive and I suppose you could try it out. Maybe just keep up with spraying/coating all the metal fittings, inside and out, with a good corrosion preventer like Boeshield.
 
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