MILWAUKEE — Johnson Controls-Hitachi Air Conditioning introduced the Hitachi Water Source Variable Refrigerant Flow (VRF) heat pump and heat recovery systems. The new multi-module systems offer the capability of connecting multiple single-module units, ranging from 6-48 tons. In addition to the benefits of VRF technology, these new compact systems deliver the following:           

•           Reduced first costs;

•           A compact size that enhances exterior appearance while eliminating outdoor noise;

•           Design flexibility through a variety of configurations;

•           They’re ideal for projects with limited space, such as high-rise buildings, office buildings, architecturally restricted properties, and apartments; and

•           They’re optimal where outdoor placement is challenging, including coastal areas and extremely cold climates.


All Hitachi VRF indoor units, controls, and gateway products are fully compatible with new water-source systems for maximum design flexibility. The unified water source units can be used as heat pump and heat recovery units. They are available in 208/230 V and 460 V in 22 different capacities. Inverter compressor technology achieves high energy efficiency. The Air Conditioning, Heating, and Refrigeration Institute (AHRI)-certified efficiency ratings for the new Hitachi Water Source VRF systems include:

•           Integrated Energy Efficiency Ratio (IEER) of 18.9-29; and

•           Heating Coefficient of Performance (COP) of 4.00 to 6.30.


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