The Domestic Decarbonisation Index 2026
Why aren't more UK homes switching to heat pumps? Correla's first annual Domestic Decarbonisation Index scores the barriers, based on survey responses from 2,000 UK consumers and 500 installers.
Britain says yes to low-carbon heat. So why so few heat pumps?
Most people in the UK support cutting carbon from their homes. Only 12% say they don't want to move away from gas and oil. But fewer than 1% of homes have made the switch, and 29 million households still need to change to low-carbon heat for the UK to reach net zero by 2050.
The government wants 450,000 heat pumps installed every year by 2030. In 2025, around 125,000 were sold.
To understand that gap, we asked UK consumers and installers what's getting in the way. The answers reveal five points of friction: cost, existing knowledge, public hesitancy, government support and incentives and barriers for installers.
See how each friction point scores in the full report.
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Read the full report to find out
- Which of the five barriers scores highest
- The UK regions where cost is the biggest obstacle
- The five types of householder, and what would win each one over
- Why installers struggle to make the case for heat pumps
- What industry and government must do next
