Question to the Department for Business, Energy and Industrial Strategy:

To ask the Secretary of State for Business, Energy and Industrial Strategy, what assessment his Department has made of the average number of gas boilers that were replaced in UK domestic properties in each of the last five years.

According to the Hot Water Heating and Industry Council (HHIC), 1.67 million boilers were sold in 2019. HHIC have also recently announced that the 12-month rolling average sales figure for boilers had increased by 14% from April 2020 to April 2021, demonstrating a strong response to the impacts of Covid-19 last year.

The majority of boiler purchases are replacements, installed into existing dwellings, with the rest being installed within new build properties.

For previous years, data on annual boiler sales is available under licence from market intelligence sources.