Written Question·Department for Energy Security and Net Zero·UIN 89457

Heat Pumps

Tabled: 11 November 2025

Answered: 19 November 2025

Question

Sir James Cleverly

To ask the Secretary of State for Energy Security and Net Zero, for what reason air to air reversible heat pumps do not qualify for the (a) Clean Heat Market Mechanism and (b) Boiler Upgrade Scheme.

Answer

Martin McCluskey

The Clean Heat Market Mechanism is focused on developing the market and supply chain for upgrading homes with hydronic heat pumps – a core technology for the UK’s transition to cleaner heating since around 90% of UK homes have water-based central heating ...

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