Perfect aire 1PAMSH18-MZW-16 18,000 BTU multi-zone indoor wall unit, low noise airflow. Perfect aire's multi-zone indoor wall unit is constructed from the highest-quality materials to ensure efficiency and dependability! unit features; 18,000 BTU cooling capacity, 19,000 BTU heating capacity, Auto restart function, Auto defrosting, low noise airflow system, refrigerant Leak Detection, compressor heating belt, self-diagnosis function, eco-friendly refrigerant and is cetlus listed. Today's consumer desires more, expects more and demands more when spending their disposable income and perfect aire delivers on all counts. When you need the best, look no further than perfect aire! quality products and unmatched customer service are the key drivers behind perfect aire. From dehumidifiers, Humidifiers, and an assortment of portable, window, and through the wall air conditioning units, perfect aire offers products suited to a wide range of needs. Should you need any support with our products we are more than happy to assist you, Please contact us at 877-365-6274 or email supportatperfectaire. US