Members of the association

The European association for wastewater heat recovery gathers inventors, manufacturers and distributors that all have in common the thrive for durability.

All waste water heat recovery systems sold by members of the association have been tested by an independent laboratory and meet EU and national water safety codes.


The Netherlands

For over 70 years, the ACO Group has been developing, manufacturing drainage systems for rain- and wastewater. Driven by our company purpose – durable drainage solutions for tomorrow’s environmental conditions – we offer heat recovery systems for shower water and wastewater solutions for commercial kitchens and industry.       +31 314 368 280




CERIAN SHOWER was founded in 2017, we developed a flat shower tray, that fits in all kinds of households from apartment buildings to single family homes. Our shower system is unplugged, easy to install and doesn't require any maintenance. In the 21st Century, it doesn't make sense to throw energy down the drain.       +34 96 023 96 05


The Netherlands

Since 2006, DSS, has focused on the development of products for heat recovery from shower water. This has led to four product lines, which are sold successfully in the Netherlands and other European countries. With a DSS WWHRS you can recover as much as 50 to 65% of the heat that normally disappears through the drain!       +31 53 482 20 10



European Copper Institute (ECI) contributes to political debate,   directly and through stakeholder platforms, sharing its expertise of copper-based products and technical building services and their contribution to the Commission goal of a carbon-neutral building stock. ECI has a considerable knowledge base and multidisciplinary expertise in technology, chemical policy and life cycle relating to copper and its applications.  It also has established outreach channels aimed at supporting its advocacy towards the EU institutions.       +36 30 982 7113



Founded in 2009, EHTech make waste water heat recovery systems for houses, buildings, gyms, hair salons, swimming pools and industry.        +33 972 60 91 83



Evolsys distributes DSS waste water heat recovery systems for France. With an experience acquired since 2006 in renewable and recovery energy systems, Evolsys provides advice and expertise.        +33 981 13 88 27



Gaïa Green is the exclusive distributor in France and the Grand Duchy of Luxembourg for ReQup® greywater heat recovery systems. Gaïa Green offers a wide range of products, easy to install and providing a high level of comfort. ReQup® systems are the only ones in France to have obtained their Avis Technique from the CSTB.          +33 3 66 08 28 49


The Netherlands

Hamwells was founded in 2015 and develops and manufactures shower systems that greatly reduce the need for hot tap water. We strongly believe that this is one of the most important steps in lowering energy consumption and reaching climate goals. Our shower system named the Blue was released in 2019. At this moment we have 4 versions in production. They are designed specifically for apartments and 1-storey residential buildings. The need for hot water and thus energy for showering is lowered with up to 72.5%. This is achieved through the implementation of an efficient heat recovery module and internal pump.       +31 85 303 6496



The Joulia-Inline shower drain recovers heat from the consumed shower water with maximum efficiency. This contributes to the responsible management of energy resources and thus optimizes the relationship between water and energy consumption.        +41 32 366 64 22


The Netherlands

Q-Blue has more than 15 years of experience in the development and production of innovative, highly efficient shower heat exchangers for domestic houses, apartment buildings, hotels, swimming pools and industrial appliances. More than 75000 heat exchangers found their way to happy users in Europe. All products are fully certificated and meet the relevant European standards in drinking water safety.        +31 591 374570


United Kingdom

Recoup Energy Solutions (Recoup WWHRS) was founded late in 2011 with the sole aim of offering the most efficient, and most diverse range of certified Waste Water Heat Recovery Systems (WWHRS) available.        +441379 844010



Sanura develops the world’s first plug & play shower heat exchanger that can be installed in minutes and saves 35% of energy on average: the Flatmate.  The Flatmate is specifically developed for use in existing bathrooms, where conventional shower heat exchangers cannot be installed due to the high implementation costs.



Based on a powerful structured organization, SOLARONICS Chauffage has been manufacturing and installing heating products and renewable systems from greywater heat recovery through a long industrial tradition serving its customers        +33 320 10 59 59



Since 2009, providing a smart and affordable solution for homes and businesses around the world to reuse the valuable energy needed to heat the shower water.        +351 210 991 351