High-efficiency York Affinity variable capacity residential systems from Johnson Controls feature inverter-driven variable capacity technology, which dynamically adjusts capacity and airflow. Air circulates more precisely and quietly, maximizing comfort and reducing energy consumption. They are Energy Star Most Efficient qualified. The 20 SEER YXV air conditioners and YZV heat pumps can reduce energy costs by as much as 50 percent compared to older 10 SEER units, reports the manufacturer.
