We have the Atwood tankless water heater installed by the dealer prior to us picking up the new RV last fall. Since then we would get luke warm water in the bathroom but nothing in the kitchen even close to warm. I struggled with it for hours last weekend trying all the tricks that I have seen and read about online. I finally found the Modular Control Valve in the hardest spot to see and now we have very hot water for as long as you want. I have seen many many posts about how the tankless water heaters are nothing but problems and we are nothing happy with our Atwood tankless.
2016 Northpoint 377rlbh
2016 Chevy 3500HD LTZ Diesel
Pullrite Super Glide
Beautiful Wife and Beautiful 4 YO Daughter