Gas-fired boilers installed after 1 April 2005 and oil-fired boilers installed after 1 April 2007 must be High Efficiency (condensing) (SEDBUK Band A or B) boilers, whether they are replacements or new installations.
From 1 October 2010, Band B boilers will be banned under a change to Part L of the Building Regulations in England & Wales (similar provisions are being made in Scotland & Northern Ireland).
This means that all boilers will:
- Convert at least 90% of fuel into heat
- Save up to 40% a year by replacing your old boiler and controls
- Have reduced emissions
- Help you to play your part in protecting the environment
"If your boiler is over 10 years old, you could be wasting up to half the gas you buy!"
Choosing a heating system with a high efficiency boiler with the correct heating controls can make a huge difference to your heating bills over time.
How does your boiler measure up?

How much money could I save?
According to figures from SEDBUK, assuming a 90% efficient boiler your could save as follows:
