对!
你自己去看:
http://homeguides.sfgate.com/choose-right-size-air-conditioner-24686.html
Determine the cooling capacity needed for the room or your home. Cooling capacity for room air conditioners and central air conditioning systems is measured in British Thermal Units (BTUs) per hour. The United States Department of Energy Energy Star website offers these guidelines for BTUs per square footage:
100 up to 300 sq. feet: 5,000 to 7,000 BTU
300 up to 550 sq. feet: 8,000 to 12,000 BTU
550 up to 1,000 sq. feet: 14,000 to 18,000 BTU
1,000 up to 1,200 sq. feet: 21,000 to 24,000 BTU
1,500 up to 2,000 sq. feet: 30,000 BTU
2,000 up to 2,500 sq. feet: 34,000 BTU