Sunamp announces heat battery integration with Mitsubishi Ecodan PUZ-WZ R290 heat pumps

Frankfurt, 19 March 2025: Sunamp, the world’s leading manufacturer of heat batteries, is proud to announce the integration of its Thermino xPlus heat battery with the Mitsubishi Ecodan PUZ-WZ series of R290 heat pumps. This marks the first time two Scottish-manufactured products – a heat pump and a heat battery – have been designed to work together as a complete system package, delivering low-carbon, sustainable heating and hot water solutions for homes.

Following extensive testing at Sunamp’s R&D facility in the East of Scotland, the company’s Optimino key technology has been developed to ensure seamless compatibility between the Thermino xPlus and the market-leading Mitsubishi heat pump. The Mitsubishi Ecodan PUZ-WZ with R290 refrigerant is one of the most popular heat pump models in Europe, making this integration a significant step in expanding the accessibility of efficient, space-saving, and sustainable heating solutions for .

“The integration of Thermino xPlus with the Mitsubishi Ecodan PUZ-WZ series is a game-changer for the industry,” said Giovanni Calabrese, head of engineering at Sunamp. “By combining our pioneering heat battery technology with one of Europe’s most widely adopted air to water heat pumps, we’re making it easier than ever for homeowners to transition to a low-carbon future without compromising on hot water output or space. It’s the ideal solution for smaller homes with no space for a which means pumps could not be fitted otherwise.”

Both products are manufactured in the East of Scotland, reinforcing the region’s position as a hub of innovation in sustainable home heating technology.

Sunamp is a global leader in thermal energy storage solutions, delivering innovative heat battery technology that enhances the efficiency and sustainability of heating and hot water systems. Sunamp’s award-winning products help homes and businesses reduce carbon emissions while optimising energy use. With ultra-low heat losses, Sunamp’s Thermino xPlus is the space-saving choice over traditional bulky hot water cylinders.

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For more information contact Maggie Wright on 07801 710360 or email [email protected]