Affordable Product, Efficient Performance The Quantum Plus (model 650 & 652) provides long-lasting, worry-free comfort you can trust, with the added benefit of using the environmentally sound refrigerant Puron. Ask your local Bryant dealer to show you how to improve your comfort and save money on your utility bills with Bryant's Quantum Plus heat pump. 1. Environmentally Sound Performance Is provided by the chlorine- free, Puron Refrigerant. This refrigerant offers enhanced efficiency and long-term protection from the potentially skyrocketing costs of maintaining products using the old refrigerant Freon-22. 2. Quiet Operation Is delivered by Bryant's patented Aeroquiet™ system. This special design moves air throughout your system more easily for reduced noise and increased efficiency. 3. The Added Reliability And Sturdy Construction Of the high-efficiency, heavy-duty scroll compressor endures more dependable and longer lasting indoor comfort. The compressor sound hood also makes the Quantum Plus (model 650 & 652) heat pump extra quiet. 4. Heavy-Duty Coil Protection With DuraGuard™ helps avoid damage from rocks and other debris to keep the unit running efficiently. 5. Comfort Protection Is offered by the high and low pressure switches. These switches help insure the long life of the most important component in your heat pump: the compressor. 6. Long-Lasting Protection Is ensured by the filter drier which prevents the formation of damaging acids that are common causes of heat pump failure.