MHI Thermal Systems Expands Hydrolution EZY Heat Pump Lineup in Europe | R290 Refrigerant

Tokyo-based Mitsubishi Heavy Industries Thermal Systems, Ltd. (MHI Thermal Systems) is broadening its presence in the European heat pump market with the addition of 10kW and 14kW models to its “Hydrolution EZY” series of air-to-water (ATW) heat pumps. The expansion, announced March 19, 2026, builds on existing 6kW and 7.1kW models and utilizes the environmentally-friendly R290 natural refrigerant. The company plans a phased rollout across European markets beginning this spring.

The Shift to Natural Refrigerants

The move to R290, a natural refrigerant with an extremely low global warming potential (GWP) of 0.02, is a key element of MHI Thermal Systems’ strategy. This is particularly relevant given increasingly stringent environmental regulations in Europe. Traditional refrigerants often have significantly higher GWPs, contributing to climate change. The GWP value of 0.02 is based on the IPCC Sixth Assessment Report, highlighting the environmental benefits of R290. The adoption of R290 positions MHI Thermal Systems to capitalize on growing demand for sustainable heating and cooling solutions.

How Air-to-Water Heat Pumps Work

ATW heat pumps extract heat from the outside air to provide both hot and cold water for various applications, including domestic hot water, heating, and cooling. The Hydrolution EZY series features a monobloc design, meaning the water heat exchanger is integrated into the outdoor unit. This simplifies installation compared to split-type ATWs, which require separate refrigerant pipe connections. This ease of installation could be a significant advantage for installers and consumers alike, reducing labor costs and installation time.

Technical Specifications and Performance

The new 10kW and 14kW models maintain the core features of the existing lineup: high temperature hot water supply, high efficiency, low noise operation, and safety features. MHI Thermal Systems has made modifications to components to ensure compatibility with R290 and incorporated a newly developed in-house compressor. This allows the units to maintain a high flow temperature of 75℃ even in challenging weather conditions, ranging from -25℃ to +43℃. The units also feature separate electronic expansion valves for heating and cooling, optimizing control and efficiency across a wider temperature range.

Noise reduction is another key focus. The units employ a double vibration isolation structure, a triple sound-absorbing structure, and a large fan. A “quiet mode” further reduces operating noise, addressing concerns in densely populated residential areas and ensuring compliance with local noise regulations. A refrigerant leak detection sensor adds an additional layer of safety.

Design and Power Supply Options

The Hydrolution EZY series maintains a consistent aesthetic, with a black finish designed to blend seamlessly with European homes. A silver stripe accents the fan guard, creating a sophisticated gaze while minimizing the fan’s visibility. The height is the only visual difference between the 6kW/7.1kW and 10kW/14kW models, ensuring a cohesive appearance when multiple units are installed.

MHI Thermal Systems is offering flexibility in power supply options. The 10kW and 14kW models can operate on either a single-phase 230V supply or a newly available three-phase 400V supply, catering to a broader range of installation environments and electrical infrastructure. Control systems allow for the connection and centralized control of up to eight outdoor units with a single indoor control unit, making the system scalable for buildings of varying sizes.

MHI’s Carbon Neutrality Commitment

This product launch aligns with Mitsubishi Heavy Industries Group’s broader MISSION NET ZERO initiative, announced in October 2021. The company aims to achieve carbon neutrality by 2040, encompassing reductions in emissions from its own operations and from the use of its products by customers. By facilitating a transition from fossil fuel-based boiler systems to electric ATW heat pumps, the Hydrolution EZY series contributes to decarbonization efforts in European countries and supports MHI Group’s environmental goals.

Broader Market Trends and Competition

The European heat pump market is experiencing significant growth, driven by government incentives, rising energy prices, and increasing awareness of climate change. According to a report by the European Heat Pump Association, heat pump sales in Europe increased by nearly 40% in 2022. European Heat Pump Association. This growth is creating opportunities for manufacturers like MHI Thermal Systems, but also intensifying competition. Key competitors in the European heat pump market include Daikin, Bosch, and Vaillant. These companies are also investing in R&D and expanding their product portfolios to meet the growing demand for sustainable heating solutions.

Implications for the Heating Industry

The adoption of natural refrigerants like R290 is expected to become increasingly prevalent in the heating industry as regulations tighten and consumers prioritize environmentally friendly options. This shift requires manufacturers to invest in new technologies and adapt their production processes. The Hydrolution EZY series demonstrates MHI Thermal Systems’ commitment to this transition and positions the company as a leader in sustainable heating solutions. The use of R290 also addresses concerns about the future availability and cost of traditional refrigerants, which are subject to phase-down schedules under international agreements like the Kigali Amendment to the Montreal Protocol.

Looking Ahead

MHI Thermal Systems intends to continue developing environmentally conscious technologies and leveraging its expertise in the heating and cooling sector to deliver optimal thermal solutions globally. The company’s success will depend on its ability to innovate, adapt to changing market conditions, and meet the evolving needs of customers. Further expansion of the Hydrolution EZY series, potentially including larger capacity models or integrated energy management systems, is likely in the coming years. The company will also be closely monitoring regulatory developments and consumer preferences to inform its product development strategy.