User Manual LG LP0821GSB 8,000 Btu Portable Air Conditioner

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8,000 BTU air conditioners are considered one of the smallest AC units. The 8,000 BTU (British Thermal Units) capacity might be enough for a good-sized room or even a small apartment. How big of a room will 8000 BTU cool? 8,000 BTU air conditioners can cool down rooms from 250 sq ft (about 16×16) to 400 sq ft (20×20).

An 8000 BTU air conditioner is powerful enough for a bedroom. An average bedroom is between 132 to 219 square feet. And both an 8000 BTU window air conditioner and portable air conditioner can cool a bedroom of this size.