My unit is a Marine Air and it has performed well.. I installed it in '95 .. It ran for 15 years with no problems.. The compressor case corroded thru last year because the condensate water was not draining out well enough.. I attribute that to the installer and the "normal" starboard list that the H-34 has.. The installer is me.. Last year, I put a new compressor in and it is doing fine again.. This unit runs on "Dehumidify" cycle when I am not there.. every four hours, it starts and runs a while to dehumidify the cabin air.. This happens all year long, not just the summer months.. In addition, I spend time on the boat during the week (it is about a 1 hour drive there from my home) and on weekends.. again this is all year long and the unit is often used for cooling through November.. for sleeping back in the slip on the bayou.. In the cold weather, I use the reverse cycle.. I haven't yet run it on the Generac inverter generator I have for hurricanes, but I am pretty sure it will do fine.. The only thing I would have changed about the unit is to use a plastic condensate pan .. I restored the pan when I changed the compressor and coated it with the Rhino stuff that they use in piickup truck beds..I also corrected the drain problem.. I would definitely consider another by Marine Air.