T&T: Air Conditioner replacement opions

[capt.d at netscape.com]

Time to replace a 30 year old Cruiseair split unit. I am looking at a one piece unit for my aft cabin to install in the closet where the old unit sits. The size needed is around 6500 btu by the square foot calculation. I am looking at a 5000 btu and a 9000 btu with only a $150 price difference. The only reason to consider the small unit is the possibility of running off an inverter. This could be a plus and make anchoring out in the summer enjoyable. I don't like running the generator at night when sleeping. I realize it may not be the best on a hot sunny day but i'm not in that room anyway and the main cabin AC is by the doorway. So is bigger better or small good enough for night time use? Maybe someone has made this mistake and can offer advice.

Thanks,Duane
MT44

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