Written Question·Department for Energy Security and Net Zero·UIN 80737

Heat Pumps

Tabled: 10 October 2025

Answered: 20 October 2025

Question

Mr Lee Dillon

To ask the Secretary of State for Energy Security and Net Zero, what assessment he has made of the effectiveness of the Microgeneration Certification Scheme regulations for heat pumps operating at flow temperatures between 65°C and 75°C.

Answer

Martin McCluskey

The Microgeneration Certification Scheme (MCS) stipulates that all heat pumps operating at flow temperatures above 35°C are required to be tested and meet a Seasonal Coefficient of Performance (SCOP) of 2.8. Therefore, MCS holds heat pumps operating betwe...

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