Originally Posted by Rustysocket
I just placed an order for a 2017 Eagle and was excited to see that a tankless option was available. A short conversation with my dealer and he suggested I go with a standard tanked heater. I've known him for years and he just said that I would not be happy with one... I left it at that and we moved on to the next item on my build.
I've still been on the fence but the more I read about them I think he is most likely correct.
To function properly, an "on-demand" water heater has to monitor water pressure, rate of flow, and the temperature of the in-flow water. A computer monitors those datum points (sampled several times a second), and adjusts the temperature coming from the unit accordingly.
The RV units just are not there yet... if all worked as advertised, we would be able to set the desired temperature one time, and then forget about it.
My dealer told me to make the system work safely, he would need to add a thermal accumulator tank of about 6 gallons. I said, "wait, that sounds like a water heater!" He laughed, and said "exactly".