Daikin introduces a new high-temperature option for its VZ series, using the R-1234ze refrigerant to expand the operating range of existing models. This enhancement enables the unit to supply hot water at temperatures of up to 90 °C, making it suitable for a wider variety of applications. 

The Daikin EWWH-VZ water-cooled inverter chiller and heat pump combines exceptional energy efficiency with low environmental impact. Using R-1234ze, a refrigerant with a very low Global Warming Potential (GWP), it offers a cooling and heating capacity ranging from 400 to 1900 kW*. Thanks to its compact design and full inverter technology, the unit ensures optimal performance and flexibility to meet a variety of operational needs. 

Daikin's range of heat pumps covers capacities from 10 to 2,400 kW. Visit the Heat Pumps page to explore the full range and find the solution that best meets your needs. 

The introduction of this new option is a significant step towards decarbonising industrial heating. By extending the operating envelope, the EWWH-VZ series is well-suited to a variety of applications, including industrial processes and district heating networks, where high-temperature hot water is essential. This feature is particularly useful for industrial processes that require water at high temperatures for cleaning, sterilisation, or production purposes. 

Download the Paper to discover how Daikin solutions can optimize HVAC systems for cost savings and environmental sustainability. 

6 reasons to choose the Daikin high temperature water sourced heat pump EWWH-VZ 

Reason #1: Sustainability 

In line with the European targets for reducing fossil fuel consumption, there is a growing demand in the market for high-temperature heating solutions. In this context, the Daikin EWWH-VZ unit's capacity to deliver hot water at temperatures of up to 90 °C is particularly significant. It plays a pivotal role in decarbonising industrial processes and district heating systems, which have traditionally relied on fossil fuel-based boilers. Unlike conventional systems, the EWWH-VZ operates without combustion and uses a low-GWP refrigerant, which significantly reduces CO₂ emissions. Thanks to its full inverter technology and high energy efficiency, it also offers a more sustainable and cost-effective alternative to traditional boilers, helping industries and communities to transition towards more energy-efficient heating solutions. 

Reason #2: Flexible installation for compact spaces

One of the EWWH-VZ unit's key strengths lies in its exceptional installation flexibility, making it ideal for limited spaces. This is made possible by the innovative knock-down electrical panel, which can be installed up to five metres away from the main unit. This feature enables the system to be installed in tight technical rooms where traditional units would not fit. By separating the electrical panel from the main body, Daikin provides greater versatility in system design and layout, facilitating easier access for maintenance and optimising the use of available space, particularly in retrofit projects. 

Click here to discover how Daikin meets the demands of applications requiring a compact footprint and minimal space. 

Reason #3: Advanced efficiency through Variable Volume Ratio & Inverter technology 

In terms of efficiency, the EWWH-VZ is equipped with Daikin’s advanced single screw compressors featuring Variable Volume Ratio (VVR) technology. This innovation enables the compressor to automatically adjust the internal volume ratio according to the unit’s operating conditions, thereby maximising compression efficiency in all operating conditions. To further enhance performance, the system incorporates inverter technology, also referred to as a Variable Frequency Drive (VFD). This electronic component regulates the compressor’s rotational speed (RPM) by varying the frequency of the power supply. Consequently, the compressor can adapt its capacity continuously to match the actual heating or cooling demand. This combination ensures the EWWH-VZ delivers high efficiency, precise capacity control and reliable operation under a wide range of conditions, making it a smart, sustainable choice for industrial and commercial applications. 

Reason #4: Consistent operational continuity 

To ensure maximum reliability, the Daikin EWWH-VZ is equipped with single screw compressors featuring variable volume ratio (VVR) technology. This system includes a mechanical adjustment mechanism that modulates the volume of the discharge port, enabling the compressor to delay or anticipate the end of the compression cycle. This minimises under- or over-compression, lowering operating costs and enhancing long-term reliability. These benefits are particularly valuable in demanding industrial applications where performance and long-term durability are critical. Another key contributor to system reliability is the Intelligent Chiller Manager (iCM), Daikin’s advanced control solution designed to optimise the performance of multi-unit systems. The iCM coordinates the operation of each unit in the plant to ensure they work together efficiently, meeting demand with minimal energy consumption and mechanical effort. Finally, to further enhance operational continuity, Daikin may offer Automatic Transfer Switches (ATS, upon demand). In the event of a power failure or outage, the ATS automatically switches the power supply from the primary source to a backup source. Once the primary source is restored, the system switches back, ensuring uninterrupted operation and protecting critical equipment. 

Click here to find out more about Daikin's involvement in supplying units to CERN. 

Click here to find out more about a major project involving a pharmaceutical industrial plant in Italy, for which Daikin provided a customised, high-performance HVAC solution. 

Reason #5: After-sales services 

Daikin is a trusted partner in the HVAC industry, with years of experience in leadership and a strong track record in delivering customised solutions for any needs. With over 50 years' experience manufacturing across Europe, Daikin combines custom engineering expertise, local market knowledge and exceptional after-sales support. Production facilities around Europe ensure shorter lead times, lower transportation costs and faster delivery. Thanks to its widespread presence, Daikin can provide rapid and efficient on-site assistance whenever needed. A key element of its after-sales service is Daikin on Site (DoS), a web-based, 24/7 remote monitoring platform that collects detailed operational data from units to control systems. This data is processed by Daikin’s Smart Centre, which transforms it into actionable insights. Users can monitor system performance remotely while Daikin experts optimise and maintain equipment in real time, reducing downtime and operating costs.  

Reason #6: Ensuring performance peace of mind 

To give customers complete confidence in their solutions, Daikin Applied Europe offers them the opportunity to participate in witness tests — dedicated testing sessions that simulate real-world operating conditions. These tests provide tangible proof that the selected units meet the specific requirements of each project. Factory Acceptance Testing (FAT) is also available to verify that each unit complies with all design specifications and functional criteria before delivery. 

The new heat pumps from Daikin: an overview 

Daikin is investing in developing innovative solutions for decarbonising heating, recognising our sector's critical role in the energy transition. Through advanced technologies and high-efficiency systems, Daikin is actively contributing to achieving Europe's climate neutrality goals and promoting a more sustainable, low-carbon future.  

Over the past year, Daikin has launched several innovative products, including the versatile EWYS-4Z unit. Designed to meet the needs of both commercial and industrial applications, this model features Daikin’s proprietary Inverter-Driven Single-Screw Compressors. Operating with R-513A refrigerant, it offers a Global Warming Potential (GWP) that is 55% lower than that of R-134a, while maintaining the same A1 safety classification of being non-toxic and non-flammable. 

Click here to discover the 10 key advantages of this unit. 

Still in 2024, Daikin introduced the EWWT-Q-, a new modular water-to-water heat pump featuring Daikin-designed scroll compressors. Built on a modular architecture, these innovative units offer greater flexibility in system configuration and simplify transport and installation. This makes them an ideal solution for projects requiring scalable performance and straightforward integration. 

Click here to discover its key features. 

More recently, in February 2025, Daikin has introduced a new air-to-water inverter heat pump, the EWYE-CZ, which is equipped with advanced Inverter Scroll Compressor technology and operates using the R-454C refrigerant. This combination ensures high energy efficiency and supports environmental sustainability thanks to the refrigerant’s low Global Warming Potential (GWP). 

The EWYE-CZ can produce hot water at temperatures of up to 70 °C, making it an ideal solution for decarbonising residential heating systems. Its high performance, compact design and eco-friendly operation make it a smart choice for new builds and retrofit projects alike. 

Click here to discover its 10 key advantages and find out why it’s the right choice for your project. 

Daikin will soon introduce the EWYK-QZ air-to-water heat pump, which features the natural refrigerant R-290. This new solution is another step in the company’s commitment to sustainable, energy-efficient technologies.  

For more information, view the press release. 

*Conditions: 

CWT in/out = 40/45 °C 

EWT in/out = 15/10 °C 

Frequently Asked Questions on Daikin Heat Pumps  

Where are Daikin heat pumps manufactured?  

Daikin heat pumps are manufactured in Italy, at the headquarters and heart of Daikin Applied Europe, located in Ariccia (Rome). This factory is dedicated to producing high-quality HVAC equipment, including two main types of heat pumps: air-source and water-source.  

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How do Daikin heat pumps’ work? 

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What is the best compressor technology for heat pumps? 

Click here to explore a quick guide on compressors for heat pumps.