
Water heating is the single biggest energy use after space heating. ZYPHO makes a significant difference to fuel-poor households.
A four-person household operating an electric shower can easily spend unto £400 on showering per year—literally money down the drain.
As the new Part-L Building Regulations come into force, shower heat recovery has never been more relevant.
Pound for pound, ZYPHO Waste Water Heat Recovery systems can earn some of the easiest SAP points for new builds.
Once installed, ZYPHO passively improves the efficiency of the shower by around 30 – 65%, (depending on application and model). Less energy consumed = Fewer CO2 emissions.
- Improves EPC at lower cost.
- No moving parts. Quality components.
- No power. No batteries. No wires.
- Adaptable to most baths and showers.
- Simple system. Easy to install.
- High-quality engineering and materials.

Heat transfers from the shower’s hot waste water to the incoming cold mains supply. This heated water can be directed either to the shower tap, the water heater or both.
iZi 30
Flow Rate | Efficiency | Pressure drop |
---|---|---|
5.8 L/min | 31% | 0.2 bar |
9.2 L/min | 28% | 0.6 bar |
12.5 L/min | 25% | 1.1 bar |
Tolerances: Efficiency ± 3 p.p. | Pressure drop ± 0.1 bar.
iZi 40
Flow Rate | Efficiency | Pressure drop |
---|---|---|
5.8 L/min | 39% | 0.1 bar |
9.2 L/min | 33% | 0.3 bar |
12.5 L/min | 29% | 0.7 bar |
Tolerances: Efficiency ± 3 p.p. | Pressure drop ± 0.1 bar.

Suitable for a two storey house, PiPe 65 is a vertical shower drain heat recovery solution adaptable to shower trays, linear drains or baths. It has a flow drainage of up to 12.5 L/min and able to deliver energy savings of up to 67%.
Heat transfers from the shower’s hot waste water to the incoming cold mains supply. This heated water can be directed either to the shower tap, the water heater or both.
Flow Rate | Efficiency | Pressure drop |
---|---|---|
5.8 L/min | 67% | 0.1 bar |
9.2 L/min | 63% | 0.2 bar |
12.5 L/min | 58% | 0.3 bar |
Tolerances: Efficiency ± 3 p.p. | Pressure drop ± 0.1 bar.