According to the MCS Data Dashboard, over 4,700 certified heat pump installations were installed last month.

This brings the total for 2025 to over 20,000, as the Boiler Upgrade Scheme (BUS) – which requires the installation to be MCS certified – continues to support homeowners in transitioning to low-carbon heating.

On 23 May, the BUS celebrates its third anniversary, and the number of applications to the Scheme has risen over the last 12 months. 

Ian Rippin, CEO at MCS, said: “Last month was the best April for certified installations in MCS history, totalling more than 26,000 – a 22% increase on April 2024.”

Solar PV also had a strong month, with 18,500 certified installations in April. This was a 19% increase on April 2024, building on the strong start for the year for solar, which has had the best year for certified installations in over a decade this year. 

Battery storage continues its record-breaking start to the year with almost 2,900 certified installations in April – up 108% from April 2024 and bringing the total number of installations to over 36,000.

Rippin added: After a record-breaking 2024, it’s great to see the adoption of low-carbon alternatives is continuing to grow at pace. As this momentum builds and installations are delivered at volume, it’s crucial to prioritise ‘delivered quality’ to strengthen consumer confidence in home-grown energy. That is at the core of the redeveloped MCS.”