Tech Zone

Flow is a reliable and really efficient boiler with a bit of magic inside.

This is the world's first affordable electricity-generating boiler. It uses patented technology to generate electricity as it's heating a home. No other company anywhere else in the world has a boiler like this. Watch our video to find out how it works.

Features and technical spec

  • Electricity-generating (microCHP) condensing gas boiler requiring a separate hot water tank
  • Generates around 2000kWh of electricity a year
  • A-rated efficiency – 94%
  • Wall mounted
  • 5 year boiler guarantee
  • Up to 10 year power module (electricity-generator) guarantee

Built to last

The Flow boiler is manufactured in Scotland by Jabil, one of the world’s leading manufacturers. It’s made using the highest quality components, sourced from our trusty partners in the Eurozone.

Although the Flow boiler is revolutionary, it actually uses very similar components to most other boiler manufacturers. So although the Flow boiler is excitingly different, it will also seen reassuringly familiar to you.

And of course it’s built to last. Our engineers have paid attention to every last detail of the design to maximise reliability and efficiency. So not only will your customers get a boiler that generates electricity, they’ll also get a boiler that heats their home and water for years to come.

The Energy Generating Scroll
Tested to the limits

Tested to the limits

Our research and development centre is in Capenhurst, near Chester. That’s where our world-beating scientists and engineers spent 10 years and £75m developing the unique, patented Flow boiler.

Much of the design and development work is initially done digitally. But then there’s nothing like getting your hands dirty in the workshop, where the early prototypes were built by hand.

The Capenhurst facility includes our state-of-the-art test centre, where Flow boilers are tested for thousands of hours, running continuously. Our testing produces invaluable data that allows us to continuously improve the Flow boiler’s performance for our customers.


  • Comes with a fixed reduction of £4,800 in customer’s home energy bill over the first 5 years
  • Then can reduce a customer’s electricity bills by up to £500 a year for the boiler’s lifetime
  • Can reduce a household’s carbon emissions by up to 20%
  • Comes with a 5 year guarantee
  • No other manufacturer has a boiler like this
Made In The UK