[inaforty]

Fitting a marine genset into a V 20 would be a challenge. Not to say that it couldn't be done but would certainly take up some room. You would need a sea water intake with a strainer. Exhaust muffler and a blower with vents and hoses. Keep in mind that when installing the genset you want to make sure that it is serviceable with access to critical stuff like water pump,belts,etc.

I just changed the oil and filter and fuel filter on the genset in our 35' Bertram and there isn't a whole lot of room to work on it. My friend with a 35 Viking has it even worst with having to remove floor support to access everything.

We love the marine genset but even with it being a marine unit I wouldn't run it while we are sleeping. All it takes is a hose to fail and that genset is pumping water into the boat. We will run the AC before we go to sleep then use battery powered fans.

I would stick with the portable unit and run it on the swim platform. Install CO sensors and use it only while your awake. With the portable unit there is no belts,zincs,strainer,winterizing etc. I carry gas for the dingy on our Bertram every time we leave the dock and many boats still use portable tanks.

BTW our Honda EU 2000 would run a roof top RV AC no problem. I can't remember how large it was but it was pretty big (12k btu??).