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Daikin J Series - compact water-cooled chiller extension with lower GWP R1234ze and R-513A options

Press Release, October 2020

New lower GWP refrigerant options are now available for Daikin’s J Series compact water-cooled chillers.


Vienna, October 15, 2020 – The new Daikin J Series (EWWS/H-J-) was recently added to the Daikin Applied Europe product portfolio. With this renovated range, Daikin offers new solutions for the water-cooled chiller segment, adding new low GWP options for the water-cooled compact line, J Series, already available with R-134a.

This new line offers very compact and reliable solutions with low environmental impact refrigerants such as R-1234ze and R-513A, making it flexible and suitable for a wide variety of applications. High temperature heating applications both in stand-alone arrangement and in cascade system with an air to water heat pump are possible, thanks to the extended envelope of the R-1234ze refrigerant.


The J Series

The new EWWS-J- and the EWWH-J-, with R-513A and R-1234ze refrigerants respectively, are water-cooled heat pump units reversible on the water side. Similarly to the entire J family, the new series is compact, efficient, reliable and able to meet the heating and hot water needs of a wide variety of building types thanks to the possibility of providing up to 75°C condenser leaving water temperature.

In addition, the water-cooled condenser-less EWLS-J- and EWLH-J units are also now available, featuring R-513A and R-1234ze refrigerants. These units share the same traits as the entire J family, specifically in regards to their high efficiency both at full and part load conditions, plus the compact design for easy indoor installation or retrofit operations.


Unit characteristics

The new J series features Daikin’s improved in-house developed single screw compressor, optimised to work with lower GWP refrigerants. Reliability is one of the important characteristics of these products, linked to the long-established technology used in units featuring R-134a and the single screw compressor.

Thanks to the units’ compactness, they represent a relevant option for applications in small and narrow technical rooms.

The units are equipped with Microtech4, a new controller with a superior control logic and user-friendly interface, offering many new functionalities including the integration of Daikin’s iCM (Intelligent Chiller Manager) directly in the unit’s controller. iCM is able to manage and optimise the performance of a group of chillers, increasing durability and efficiency while reducing operating and maintenance costs.

The J Series integrates Daikin on Site, an innovative remote monitoring tool for chiller plants, that provides information with a unique level of detail, whilst also tracking unit and component behaviour and monitoring their correct functionality. Daikin On Site provides real time data 24/7, allowing the creation of periodical reports for an in-depth analysis of the plant performance.


Refrigerant characteristics

The choice of R-513A or R1234ze refrigerants, in addition to R-134a, is one of the most important new features of this series.

The R-1234ze refrigerant provides customers with a very low GWP (7) alternative for projects where the environmental impact is a key factor and also allows them to utilise financial incentives which promote the use of more sustainable and energy efficient Air Conditioning equipment.

R-513A, other than being an environmentally friendly refrigerant with a relatively low GWP (572), is an A1 classified refrigerant, meaning it is non-flammable and compliant with any safety standard.

For more information on the Daikin J series chiller range, visit



Daikin Airconditioning Central Europe
Daikin Airconditioning Central Europe was founded in 1999 with its headquarters in Vienna, Austria. The company’s portfolio comprises products and solutions for heating, cooling, ventilation, air conditioning and refrigeration. Approximately 410 employees are in charge of sales and service operations in 16 countries across Central and Eastern Europe (Austria, Czech Republic, Slovakia, Hungary, Romania, Bulgaria, Moldavia, Slovenia, Serbia, Croatia, Bosnia & Herzegovina, North Macedonia, Montenegro, Kosovo, Albania, Poland). 
About Daikin Europe N.V.
Daikin Europe N.V. is a wholly-owned subsidiary of Daikin Industries Limited and a major European producer of air conditioners, heating systems and refrigeration equipment, with approximately 6946 employees throughout Europe and major manufacturing facilities based in Belgium, the Czech Republic, Germany, Italy, Turkey and the UK.
Globally, Daikin is renowned for its pioneering approach to product development and the unrivalled quality and versatility of its integrated solutions. With more than 90 years’ experience in the design and manufacture of heating and cooling technologies, Daikin is a market leader in heat pump technology.
About AHT Cooling Systems
With approx. 1600 employees and 4 international production facilities, Austrian based AHT is the world's leading manufacturer of commercial plug-in refrigeration and freezing systems and is supplying major supermarket and discount chains as well as ice cream and beverage manufacturers for more than 35 years with an innovative and ecologically beneficial product range. In 2019, the company was acquired by Daikin Europe N.V.
Press contact:
Miroslava Stanic
General Manager Marketing & Corporate Communications,
Daikin Airconditioning Central Europe HandelsgmbH
Tel.: 43 (0)1 – 253 21 11 - 101
Lemböckgasse 59/1/1
1230 Vienna, Austria


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