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Written question asked by Kim Johnson (Labour) on Monday, 1 September 2025, in the House of Commons. It was due for an answer on Wednesday, 3 September 2025. It was answered by Martin McCluskey (Labour) on Tuesday, 9 September 2025 on behalf of the Department for Energy Security and Net Zero.

Boilers and Heat Pumps: Sales

Question

To ask the Secretary of State for Energy Security and Net Zero, what information his Department holds on the (a) number and (b) type of (i) heat pump and (ii) boiler unit sold by each obligated boiler manufacturer, in the context of the Clean Heat Market Mechanisms; and what assessment his Department has made of the potential merits of publishing these figures on a regular basis.

Answer

The Department will receive independently verified annual gas and oil boiler sales data from scheme participants after the completion of each scheme year via the scheme’s administrator, the Environment Agency. Further detail on these reporting processes can be found in the published scheme guidance. It also has access to heat pump installations data from the Microgeneration Certification Scheme and publishes statistics on Government-supported installations at https://www.gov.uk/government/collections/heat-pump-deployment-statistics.

The Department is considering the options to publish some Clean Heat Market Mechanism scheme data, for example aggregated annual verified sales and installation data, but needs to assess commercial sensitivities in doing so.

Secondary information

Type
Written question
Reference
73868
Session
2024-26
Related items
Boilers and Heat Pumps: Sales
Monday, 24 November 2025
Written questions
House of Commons
Subjects
Boilers Sales Heat pumps
Contains statistics
Yes
Link
View this Written question on www.parliament.uk