Home Solution Sanura Flatmate – Shower Water Heat Recovery Unit
Netherlands

Sanura Flatmate – Shower Water Heat Recovery Unit

Sustainable building materials & equipment

Reducing energy consumption in heating water for showers

Contact

Logo

Sanura B.V.

Company Established Year

Since 2021

Who is this solution for

Govt, Business, NGO, Individual, Everyone

Info

Available

To sell

Project Status

In commerce

Looking to expand internationally

Yes

Doing business in

worldwide

Awards and certifications

Greenchoice Energy Prize Nominee

2022

Finalist in sustainable energy solutions challenge for the residential sector.

Solar Impulse Efficient Solution Label

2023

Certified as an energy-efficient, economically viable low-carbon home technology.

Greenchoice Energy Programme Inclusion

2023

Selected for Dutch national utility program rewarding home energy-saving products.

Product description

The Sanura Flatmate is a revolutionary shower water heat recovery unit that addresses the key issue of high energy consumption in heating water for showers. By capturing thermal energy from outgoing warm wastewater and transferring it to the incoming cold water line, this innovative system significantly reduces the energy required to heat water, leading to up to 50% energy savings per shower.

The Flatmate is designed to be installed directly under the shower floor, featuring a double-wall heat exchanger that efficiently preheats the water. Its compact design, measuring only 5 cm in height, allows it to fit into standard floor structures without the need for major plumbing alterations. The unit is certified to meet European safety and hygiene standards, ensuring both performance and user safety.

Whether used in residential housing, student apartments, social housing, or energy-efficient renovation projects, the Sanura Flatmate offers a sustainable solution for reducing building emissions while maintaining user comfort. It is compatible with electric and gas water heaters, making it versatile for various building types and heating systems.

Key characteristics and environmental benefits

  • High-efficiency heat recovery system for showers
  • Up to 50% energy savings per shower
  • Compact design fits into standard floor structures
  • Easy installation without major plumbing alterations
  • Certified to European safety and hygiene standards
  • Compatible with electric and gas water heaters
  • Scalable solution for residential and multi-unit buildings
  • Typical payback time under 5 years
  • Used by municipalities and housing corporations for decarbonization
  • Affordable and sustainable contribution to reducing building emissions

About the Company

Sanura B.V. is a Dutch climate-tech startup established in 2021 in Zeist, the Netherlands. The company designs and commercializes compact, plug-and-play heat recovery systems that enable households and small buildings to significantly reduce energy loss during showering. Its flagship product, the Sanura Flatmate, is an easy-to-install shower heat exchanger that captures warm wastewater energy and reuses it to preheat incoming cold water. This process reduces energy consumption by up to 50% per shower, saving hundreds of kilowatt-hours annually. Sanura’s systems are certified, maintenance-free, and suitable for both new construction and retrofit projects. The company collaborates with municipalities, housing cooperatives, and national energy efficiency programs to promote affordable home decarbonization. Sanura’s innovation is aligned with Dutch climate targets and has received recognition from the Solar Impulse Foundation and the Greenchoice utility company. By focusing on practical, accessible solutions, Sanura empowers citizens and public sector actors to accelerate the energy transition from the inside out.

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