Whynter is going GREEN! With this new Eco-friendly CFC free, lead free and high enery efficiency portable air conditioner, you can stay cool while keeping with better environmental standards and reducing energy consumption. This Whynter GREEN ARC-14S portable air conditioner features the ECO-FRIENDLY CFC free GREEN R-410A refrigerant and lead free RoHS compliant components. This unit features the patented advance auto drain technology, which uses and recycles moisture collected during the cooling process to produce cool air. The dual hose operation provides fast cooling. This unit can cool up to a 500 sq. ft. space (ambient temperature and humidity may influence optimum performance).