Main navigation

Is my boiler a high efficiency condensing boiler?

Boilers are rated according to their efficiency in converting fuel to heat as a percentage. This rating is called SEDBUK - Seasonal Efficiency of Domestic Boilers in the UK.

SEDBUK ratings are from A to G, A-rated boilers being more than 90% efficient. Only A rated boilers - having efficiencies of over 90% carry the Energy Saving Recommended logo.

Compare the efficiency of different boilers at www.boilers.org.uk

You can also use our Energy Saving Recommended database to find the boiler that's right for you.

Page tools

  • Email this page

  • Rate this page

    Average rating: 3 - OK

Register for updates

For regular email updates please submit your email address below.

Email address:

Help and advice

Call 0800 512 012 for free, independent and local energy saving advice

Click here to request a call back from your local advice centre.