I agree about the 50-55 PSI water pressure for the Girard and also only used the hot water side for showers and dishes but did have many instances where the water would go cold and still not sure why. I switched the Girard for a 6 gallon suburban gas/electric unit.
I had a 6 gallon gas unit in my 2007 Roadtrek and really liked the fact that the water would stay warm enough to wash your hands all day and you would not be using propane and found that it did not take as long for the water to get hot at the taps with the gas/electric on where the Girard took it seemed much longer.
Both systems have their pros and cons it comes down to what you like and if its worth the money to convert from one to the other, I decided to go back to the Suburban and have only done a test run for a couple of days but so far am very happy with the decision. It only takes 10 minutes for the water to get hot after someone else showers
which is about the time it takes to dry off and do whatever else.
We are driveway camping on the weekends to get away, even though its only 50 feet away, it works for us to break the same old, same old, self isolation.
2018 Thor Compass 23 TB