Johnson Controls, a global leader in delivering products, services, and solutions that increase energy efficiency in buildings, announced a refrigerant-charge reduction of up to 40 percent in its YORK® model YK centrifugal chillers.

Falling-film technology is utilized to accomplish the refrigerant reduction. Falling-film technology improves the efficiency of chiller evaporators by spraying refrigerant over the tubes, instead of covering the tubes in a refrigerant bath.  Because of the efficiency improvement, less refrigerant is needed. Available in YK chillers up to approximately 1,000 TR (based on conditions), the technology helps buildings qualify for maximum Leadership in Energy and Environmental Design (LEED®) points for Enhanced Refrigerant Management (EAc4). 

YORK model YK chillers are engineered for maximum efficiency at design and off-design conditions, contributing additional LEED points for the Optimize Energy Performance (EAc1) credit. Measured with the Air-conditioning, Heating, and Refrigeration Institute’s (AHRI) Integrated Part Load Value (IPLV), YK chillers are unsurpassed in energy efficiency. When equipped with an OptiSpeed™ variable-speed drive, they can reduce energy usage to as low as 0.20 kW/TR at off-design conditions.

YK chillers also provide sustainability benefits by using refrigerant HFC-134a, which has zero ozone-depletion potential (ODP). 

For more information:

www.johnsoncontrols.com