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For a room of about 150 sq ft, what would you say would be the best BTU's for a window A/C? 6,000 or 8,000? Which is really necessary? I have a nice 6,000 BTU one and it does the job just fine but I was considering upgrading to an 8,000 BTU, figuring the compressor wont come on as much, maybe being more efficient as a result. This room has one window (A/C would be in it)and faces east if that makes any difference and is insulated, and on the second floor. What do you think?
 

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Shawn,

Rule of thumb is about 650 sq ft per ton or (12,000 BTU's) So your 6000 BTU unit will do just fine.

You don't want a unit too big because you will cool the room too quickly and not dehumidify the air, leaving you a cold and damp feeling room. As with carbs and cams and A/C too, bigger is not always better!! LOL
 
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