Question to the Department for Energy Security & Net Zero:

To ask the Secretary of State for Energy Security and Net Zero, what assessment his Department has made of the potential impact of the age of a boiler on the levels of energy bills.

Old non-condensing boilers are less efficient than condensing boilers. As such, replacing a non-condensing boiler with a condensing model can reduce customer bills, sometimes significantly. The bill saving will vary from property to property.

It is important that boilers are installed to the correct standards and with appropriate controls to ensure they work as efficiently as possible. Proposals for new standards to improve gas boiler efficiency were set out in the recent consultation “Improving Boiler Standards and Efficiency.”