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The complete range comprises 33 water-cooled chiller sizes in various construction types and versions, which can be further enhanced by a full range of accessories.


Using R134A non-flammable refrigerant gas, RHOSS provides water cooled screw chillers with capacities between 200 kW with single compressor, and up to 1.64 MW of cooling, the biggest unit coming with 3 compressors and 3 independent circuits, offering flexibility and reliability.

The main components in the refrigerant circuit are optimised for R134a gas. This high-performance water chiller with energy efficiency levels and class A EER values offers an easy plug & play system for flexible use across a range of applications.

Water Screw Unit

On request, the water chillers can be equipped with a pump assembly, with a single or double motor driven pump that delivers a range of external static pressures. Water chillers with a plate heat exchanger and a cooling capacity of up to 500 kW can be equipped with a pump assembly and 1100-litre water buffer tank, plus a single or double pump for a complete “plug & play” solution. For industrial applications or special installations, a shell and tube heat exchanger is available.

Thanks to the dedicated boards, all water chillers can be interfaced with the main BMS systems on the market. Moreover, the unit can be managed by remote control, including the regulation of the double set point or the regulation of the set point via proportional analogue signal.