EdgeStar Portable Air Conditioner Cools Rooms Up to 425 Square Feet The EdgeStar Extreme Cool line of portable air conditioners offer the perfect combination of cooling power, quality and style. A true testament to the quality of this model, the AP12000S was recently reviewed by Consumer Search and awarded a 'Best Value' designation among comparable portable air conditioner models. We recommend this air conditioner as the best choice for cooling rooms from up to 425 sq. ft. The EdgeStar AP12000S portable air conditioner combines superior engineering, colder airflow, and a more energy efficient design to be our top cooling choice. Another great feature of this EdgeStar 12,000 BTU portable air conditioner is that it is an environmental friendly unit - It meets new RoHS standards. Coldest AirFlow of any Unit Tested: Extreme Cool design uses a more efficient compressor than the competitionand delivers higher airflow volume. This helps to bring down the temperature of your room faster than other units. Self-Evaporative System: The AP12000S offers a new patented Z-Spray auto drain