Features: 1. Super quite top air discharge 2. Coils are constructed of copper tubing with protected aluminum dins for durability and long lasting efficient operation. 3. UL State-of-art compressor, Scroll compressors in 5 ton models. 4. Refrigerant connections with a single control panel cover make servicing trouble-free. 5. Operating sounds are minimized through upward discharge air flow and innovative design.