What is it: CombiSmart is a thermostatic valve that is easily fitted to the hot water outlet pipe on the outside of a combination boiler it simply accelerates the heating process by slowing down the cold water passing thru to a flow of 3 litres per minute, until it has reached the right temperature (around 43 degrees centigrade), the valve opens to release the water to flow as normal through the outlet pipe at the rate you're used to. This process helps save both water and energy every time hot water is used.

What you save: By installing CombiSmart you will use less water and energy which means less money leaving your pocket, on average you will save up to 32,000 litres of water a year. This is the equivalent to saving around £83.62 in water and £32.64 in gas that’s a total of £116.26 every year (depends where you live in the UK and your chosen gas supplier). The value on water savings is based on an average domestic metered amount which includes water supply and sewerage costs. These savings have been calculated on the basis of tests conducted by the independent testing consultancy firm Enertek International. Please also note that if the combination boiler has a pre-heat function, this will need to be switched off to see the full benefits.