The Dometic Fresh Jet 5 is significantly quieter than the Penguin 2 (about 6-8 dB reduction) and draws similar amps (13-14A). While largely plug-and-play, some wiring modifications may be needed depending on your specific setup.
Given your positive experience with AGWS ($6,913 in claims vs $10,700 premium) and age considerations, I'd recommend comparing renewal quotes from AGWS, Good Sam, and Warrantech while seriously considering self-insurance given your disciplined maintenance approach.
When your RV air conditioner hums loudly but produces no airflow, it's typically caused by a seized fan motor, blocked vents, or debris in the fan assembly after sitting unused. Start by checking for obstructions and cleaning the unit thoroughly.