Smart Home Energy 
If you have roof solar and an immersion tank, a diverter like the FAZE ECO sends surplus generation to heat your water instead of exporting it for pennies — pay back in a year or two, but you'll need an electrician to wire it in.
Problem it solves
Diverts surplus solar PV generation to heat the immersion tank rather than exporting to the grid at low rates, reducing water heating costs.
Who it's for
Homeowners with existing roof solar PV and an immersion-heated hot water tank who want to use surplus generation for hot water instead of exporting at pennies per kWh.
Why we recommend
Good price for a solar to immersion diverter.
Savings
- Typical annual saving
- £150–£300/year depending on solar array size, household hot water demand, and export vs. import tariff differential
- Payback period
- 1–2 years
