Our first AS was a 1993 25ft. Classic, which had a gas only water heater. We had the Hott Rodd installed shortly after purchase and used the unit without any problem for approximately 15 years.
I am not aware of any problems, as mentioned above, however, it has been over 3 years since we owned the unit, and maybe problems have occured since, that we are not aware of.
The Hott Rodd, in my opinion, was a good option at the time when considering the alternative of purchasing a new water heater.
Good luck on your decision.
Curt, Joan and "BonJovi"