I live in a home with 2 other roommates. One is a neuroscientist from MIT who contends that opening the window "wastes a week's worth of cooling down the apartment". Her perspective is that even if there is a 10 degree temperature difference between indoors and outdoors, then all AC utility is lost.
I agree there is a point where this is true, but not to the extreme of leaving the AC on for a week or two will meet this happy temperature saturation point.
My argument (not successfully explained) is that the apartment (2,000 sq ft) cools to a reasonable temperature quickly when two AC units are on, furthermore it will take a long time to reach maximum cooling. Even if maximum cooling is desired, it's just not efficient past a certain point because cooling loss through the glass windows means the AC unit must compensate for that.
Furthering my annoyance is that the apartment is empty for the entire daytime (9am-7pm) hours, when the outdoor temperature drops, making the two AC solution even more efficient in my mind.
The 2005 model AC doesn't list the BTU, but the following info is on the sticker:
Volts 208 Total Amps Clg 7.4 Total Cmps Htg .82 RA Fan Amps .8 RA Fan HP .08 DA Fan Amps .83 DA Fan HP .13 Compr LRA 38 Compr RLA 7.1 R-22 35.1 oz Design Pressure: 350 PSI
Am I correct in saying the two AC solution is more efficient? At which point would it be more efficient to leave the single AC on all week?