The "hot" water in my Cherokee 19RR was warm at best. Regardless of using the electric or gas to heat it.
I finally lifted up the mattress and located the hot water heater valves under a removable panel.
Sure enough, the bypass valve was open. Mixing cold water with the hot water.
These hot water tanks usually have three valves. Water intake, water out and a bypass valve. The bypass valve is usually physically between the other two valves. This valve should be closed under normal conditions. It is only opened, while the other two are closed, during winterizing.
Hope this helps someone else with "Warm Hot Water"......
RoyB
Dartmouth, MA
2021 RAM 2500 4X4 6.4L
2011 Forest River Grey Wolf Cherokee 19RR
520 w solar-200ah Renogy Li-Epever MPPT