waste water heat recovery

ZYPHO® waste water heat recovery system saves energy, and saves you money.

Future Homes Hub
Wates
UK PropTech Association

Gold Member of the
UK PropTech Association

waste water heat recovery

ZYPHO® waste water heat recovery system saves energy, and saves you money.

Future Homes Hub
Wates
UK PropTech Association

Gold Member of the
UK PropTech Association

IN THE NEWS

Andrew on Grand Designs, featuring Zypho Shower Heat Recovery technology

Andrew’s back on Grand Designs

21 October 2026

Kevin McCloud revisits ZapCarbon Technical Director Andrew Smith’s self-built zero carbon home to discover how it has performed. The Grand Designs return explores inter-seasonal heat storage, passive shower heat recovery and the technologies working together to keep energy use low.

Zypho installation under bath

Our wider story, featured in Housing Executive

19 October 2026

Housing Executive speaks to ZapCarbon Technical Director Andrew Smith about energy efficiency in a new interview. Explore the thinking behind ZapCarbon’s approach to reducing energy use and the wider story behind the group that brings you Zypho shower heat recovery.

“One day, all showers will work this way.”

Zypho waste water heat recovery company logoZypho

Hot water is a massive part of the average UK household’s energy bill. We spend around £600 per year on heating water for showers. By recovering heat from wastewater, Zypho improves shower efficiency by 30 – 82%.

A Zypho is easy to install underneath your bath or shower tray. Once in place, it passively recovers heat from every shower, day after day, year after year.

Less energy consumed = fewer CO2 emissions and more showers for “free”.

Pie chart illustrating how much energy home appliances and heating shower water use

How Zypho® works

The principle is simple

No power

No Power

No wires

No Wires

No moving parts

No Moving Parts

  • Hot outgoing wastewater passes against a copper coil of incoming cold water before going down the drain

  • While the two streams are kept physically separate, the heat passes from the waste hot to the fresh cold

  • ZYPHO has encapsulated these thermodynamic processes in a single, ingeniously designed unit that can fit under virtually any shower tray.

How Zypho heat recovery works

Zypho® Waste Water Recovery Models

Horizontal solution iZi

HORIZONTAL MODEL

Zypho iZi30 horizontal wastewater heat recovery system
  • Shower and shower-over-bath configuration.
  • Perfect for flats or downstairs bathrooms.
  • Improves energy efficiency by up to 44%.
Horizontal solution Slim50

HORIZONTAL MODEL

Zypho Slim50 horizontal wastewater heat recovery system
  • The slimmest shower heat recovery device on the market.
  • Improves energy efficiency by up to 66%.
Vertical solution PiPe

VERTICAL MODEL

Zypho PiPe Vertical wastewater heat recovery systems
  • Ideal for two-storey homes with upstairs bathrooms.
  • Improves energy efficiency by up to 82%.

Easy Installation

Install Zypho in eight easy steps.

Zypho product catalogue preview.

Download our product catalogue

See all information relating to the full range of Zypho shower heat recovery solutions.

News and Insights