Why air-sourced heat pumps are a smart choice for hotels

In the hospitality industry, ensuring maximum comfort is a top priority, as it directly impacts guest satisfaction. This can be achieved by selecting reliable, energy-efficient HVAC systems equipped with advanced technology. Beyond comfort, economic return is essential—minimising operational costs contributes significantly to a hotel's long-term financial sustainability. Another important factor is managing space limitations, which requires compact, flexible system designs.

Read the full case study to discover how Daikin replaced two outdated chillers with a high-efficiency system.

A consistent supply of high-temperature hot water is vital for guest comfort and for meeting daily operational needs. Whether in guest rooms, kitchens, or wellness areas, reliable hot water enhances the guest experience and supports hygiene compliance.

The Daikin EWYE-CZ heat pump is engineered to meet these needs, providing water temperatures up to 70°C. In addition to efficient space heating and hot water production, the unit includes an anti-legionella control function for external tanks - an essential hygiene safeguard.
Its advanced configuration features Vapour Injection technology and an integrated Economiser, making it ideal for both new installations and retrofit projects, especially boiler replacements.

The EWYE-CZ is available in four compact unit sizes, from 16 to 70 kW heating capacity, featuring one to four inline fans. Each model is designed to deliver maximum energy efficiency while maintaining a minimal footprint, an essential advantage for hotels where space is often limited. The integrated inverter-driven water pump simplifies installation and optimises space utilisation by reducing the need for additional components. Despite its high performance and capacity, the compact design of the unit makes it particularly suitable for hotels with limited space, offering a flexible, space-saving solution without compromising on performance.

Daikin also offers the Hydronic Kit for the EWYE-CZ small inverter heat pump, a set of components designed to simplify integration into water-based heating and cooling systems, further reducing space requirements. The unit comes with an integrated inverter pump featuring electrical protection as standard.

Another key consideration in the design of hotel HVAC systems is the seasonal occupancy variation. Since not all rooms are occupied year-round, heating unoccupied spaces continuously leads to unnecessary energy consumption. To address this issue, a system that can modulate output based on actual demand is essential. The Daikin EWYE-CZ Small Inverter Heat Pump offers a Master/Slave control solution that optimises the operation of up to four units. In this configuration, the master unit manages the slave units connected in parallel within the same hydraulic circuit. This setup enables a balanced distribution of operating hours and load across all units and compressors, ensuring more efficient use of resources. By dynamically adjusting the operation of each unit based on real-time system requirements and external climatic conditions, this control system minimises energy waste, enhances overall system performance and extends equipment lifespan.

Monitoring the performance of an HVAC system is essential for reducing operational costs and enhancing overall energy efficiency. Daikin's remote monitoring cloud platform, Daikin on Site (DoS), facilitates preventive maintenance, guaranteeing consistent operation. It continuously collects and analyses operational data, enabling facility managers to plan maintenance activities more effectively. By identifying potential issues before they result in breakdowns, DoS minimises downtime, extends the lifespan of equipment and ensures consistent comfort for guests, providing hotel operators with peace of mind. Daikin offers a range of tools and services that ensure excellent connectivity and maximise control and efficiency. Through DoS users can remotely monitor and optimise system performance, apply software updates and manage multiple installations from a single interface. Additional features, such as predictive maintenance and remote diagnostics, enhance reliability further, helping to prevent breakdowns and reduce service costs. This integrated approach supports facility management and contributes to long-term energy savings.

Thanks to Daikin’s extensive and highly efficient service network, we can deliver customised preventive maintenance plans tailored to the operational profile of each system. This widespread presence ensures fast response times and localised technical support, which significantly reduces downtime and extends equipment lifespan while enhancing overall system efficiency and reliability.

To optimise energy performance, ensure long-term system reliability and significantly reduce operational costs, Daikin introduces the EWYE-CZ heat pump as a cutting-edge solution. The unit features Daikin Inverter Scroll compressors that enhance efficiency across the entire range.
In addition, exceptional energy efficiency is further achieved by Daikin's Inverter Driven Fans, which are designed with high-efficiency, glass-reinforced resin blades to maximise performance. The combination of Daikin Inverter Scroll compressors and Inverter Driven Fans makes the new heat pump a fully Inverter Driven range. Thanks to its Full Inverter design, this new unit can closely match the cooling and heating load profile of the building. This capability is particularly important as it helps reduce operating costs of the HVAC system low during part load conditions, which make up most of the system's operating time. By efficiently adapting to changing demands, the unit not only improves energy efficiency but also contributes to significant cost savings over time.