Johnson Controls-Hitachi Air Conditioning has launched a sustainable HVAC system with ultra-low GWP refrigerant for greater energy efficiency. The Centrifugal Chiller VG and S Series use R513a refrigerant (GWP 573) and an environment-friendly R1234ze refrigerant with ultra-low Global Warming Potential (GWP <1).

The Direct-drive VSD Centrifugal Chiller VG Series features a gearless direct-drive two-stage compressor, eliminating the mechanical loss of speed-increasing gears found in conventional compressors. This design enhances efficiency and energy savings, making it ideal for commercial and industrial applications.

The Centrifugal Chiller S Series features proprietary centrifugal two-stage compression technology and optimises the use of low-temperature cooling water to enhance performance, allowing the minimum inlet temperature to reach 12°C. Depending on the model, it offers a broad capacity range from 300 to 3000RT to meet various business or building requirements.

The VG and S Series Centrifugal Chillers both adopt R513a and R1234ze refrigerants, which are chlorine-free and ozone-safe, ensuring minimal environmental impact while delivering superior performance.

“We are entering a new era of low GWP refrigerants in HVAC (Heating, Ventilation and Air Conditioning) solutions. Providing low-carbon HVAC solutions to our customers is core to our mission as we remain committed to helping all our customers embrace decarbonisation and combat climate change.” said Karvin Lo, Director and General Manager of Johnson Controls-Hitachi Air Conditioning Hong Kong.