Daikin is expanding its heat pump range with the introduction of the EWYK-QZ, a modular air-to-water heat pump that operates with the environmentally friendly refrigerant R-290 (propane).
The system, designed for heating, cooling, and domestic hot water, aims to provide a sustainable alternative to conventional boilers. While the official market release is set for late 2025, Daikin showcased a prototype at ISH Frankfurt, Europe’s leading HVAC trade fair, from 17 to 21 March.
The EWYK-QZ offers a modular setup with heating and cooling capacities starting at 100 kW for a single module and scaling up to 2000 kW in multi-module configurations. It can replace traditional boilers and supply hot water at temperatures up to 75°C. In cooling mode, it operates efficiently within an evaporator outlet temperature range of -15°C to +27°C and an ambient temperature range of -20°C to +46°C.
Modular design for flexible installation
The modular concept allows multiple units to be linked and managed as a single system. Each module is available in 100 kW or 125 kW versions, and up to four can be combined into a 500 kW array. Four arrays, or 16 modules, can be integrated into a 2000 kW system, controlled via Daikin’s Intelligent Chiller Manager (iCM).
This design simplifies transport and installation. When paired with Daikin’s Manifold Kit and Pump Module, it offers a plug-and-play solution. Additional modules can be easily incorporated to expand system capacity as needed.
Safety features and environmental benefits
The EWYK-QZ uses propane (R-290), a low-GWP refrigerant, reducing its environmental impact compared to traditional refrigerants. The system includes advanced safety measures:
- Two refrigerant leak detectors – one on the refrigerant circuit and another inside the switch box
- Unit extraction fan – disperses refrigerant in case of a leak
- Switchbox fan – enhances safety by removing refrigerant from the switch box
- Visual and acoustic alarms – a siren alerts operators in case of a refrigerant leak
- All components are externally wired for easier integration and safe operation
Each module can be serviced independently, improving maintenance efficiency. Daikin on Site, the company’s remote monitoring system, enables real-time tracking and proactive maintenance to optimise performance and reduce downtime.
The EWYK-QZ’s full-inverter design dynamically adjusts to demand, improving efficiency and lowering operational costs. Key features include:
- Scroll compressors with inverter technology for optimised energy use
- Brushless fans to enhance efficiency at partial loads
- A modular configuration to reduce on-off cycling, extending equipment lifespan and reliability
- The Daikin EWYK-QZ modular air-to-water heat pump is scheduled for market launch in late 2025, with the preview having been at ISH Frankfurt 2025.
Source: Daikin