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Old 11-05-2015, 07:57 PM   #15
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This topic has been on my mind just this past week. Our 2016 has the tankless heater and in the two times we've "overnighted" so far we both wish we had a tank heater again. Most everything negative that was stated above appears to be true. Takes a while to sense hot water flowing given the delay between the unit first sensing full water flow; then firing the gas burner; then heating the heat exchanger; and finally getting hot water to the faucet or shower valve. The shower had to be set to full hot to get warm enough water temperature for showering. While on the RV pump, and when the shower valve is set on full hot, the pressure is not nearly as great as when blended with cold water.

The most negative aspect I found so far is when setting a faucet for a low flow of hot water. The tankless heater will not fire under low or partial water flow That's just wrong.

I'm quite familiar and supportive of tankless heaters in residential and commercial applications where water pressure and flow are fairly high and fairly stable. They generally do a great job. I'm not yet sold (and may never be sold) on RV application. Anyway, in time I'll try to get more acclimated to this device, but it already feels like a mistake. And yes, the wife dislikes it even more than I do.

cheers,
Joopy
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Old 11-05-2015, 11:46 PM   #16
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Girard just came out with a new generation tankless water heater. I was able to play with it at the factory and it seemed to work great in the unit we tested it in. Quick hot water and lower pressure didn't seem to phase it. From what I was told it has more and bigger burners. Call Girard and they will be happy to address your concerns.
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Old 11-06-2015, 11:16 AM   #17
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We had one in our last camper and it would do ok if somewhere with good pressure and sewer. But if any of the above were not there it was either cold or hot shower. One place we like to camp has well water and you could tell when the pump was pumping.
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Old 11-06-2015, 11:36 AM   #18
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We had one of the original girard tankless in a 5'er back in 2011/2012...

Jerry Rennert of Girard came to DFW to update mine when I was having issues...
they included a dial that adjusted the 'base' parameters...
too hot or too cold based on water pressure, outside temp, etc...

worked better after that, but one thing that was very important is to get all, and I mean ALL the air out of your plumbing, even dead ended pipes like for a washer that you didn't use...

every spring I would run a hose out the window to bleed the w/d connections we didn't use

I am back to a tank system in the coach...
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Old 11-07-2015, 09:53 AM   #19
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John, have you tried to find a local welder to weld your tank back together? I had a 1995 Bounder with the aluminum water heater. The water heater split open when I didn't properly winterize one year. I was able to take it to a local welder who fixed it like new. It's still in use to this day. It was MUCH cheaper to repair than to replace.
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