Short answer: Heat pumps are more efficient, more sustainable — and  cheaper in the long run, especially with the £7,500 Boiler Upgrade Scheme (BUS). 

While a new gas boiler may seem cheaper upfront, the total cost of ownership, energy use, maintenance, and emissions tell a different story. 

Let’s turn those carbon savings into something easier to picture — trees

Because trees absorb CO₂, we can compare your retrofit’s carbon impact  to how many trees it would take to do the same job

The Science 

• An average mature tree absorbs ~22 kg of CO₂ per year
• Your home’s carbon emissions depend on your heating system,  insulation, and energy source
• By switching to renewable tech, you reduce emissions — and the tree-equivalent savings add up fast

Source: UK Forestry Commission, BEIS 2023 CO₂ factors