Enjoy The Sound Of Energy Savings The model 594D quietly cools your home with a rating of 11 SEER (Seasonal Energy Efficiency Ratio). That means you can save electricity this summer while spending quality time indoors, enjoying cool comfort with your friends and relatives.  1. Smooth, Efficient Operation Is provided by the high-efficiency compressor. Bryant mounts the compressor on rubber cushions for quieter operation. 2. Proper Drainage From the corrosion-resistant base pan keeps water and debris out of the unit. Premium quality paint and galvanized steel helps reduce corrosion. 3. Improved Airflow Is the result of Bryant's patented Aerocoustic™ design. This special design draws air into the unit with less noise and turbulence for quieter, more efficient operation. 4. Heavy-Duty Coil Protection With Bryant's  DuraGuard™ grille helps keep the unit running efficiently by preventing damage from rocks and other debris. 5. Maximum Heat Transfer Provides more efficient cooling, and is the result of the copper tube/louvered aluminum fin coil. It's made from corrosion-resistant materials for lasting durability. 6. Leak Resistant Refrigerant Connections From the back-seating service valves adds reliability and serviceability for years of worry-free comfort.