Living in an energy-efficient zero-carbon home with an air source heat pump has cut energy bills drastically

• Are heat pumps the future or just a lot of hot air?

This Monday, it will be two years since Julian and Juliette Rayner moved into their new zero-carbon home on a development about 20 minutes drive from Bristol.

The property boasts a range of new technologies that makes it highly energy-efficient and enable the couple to generate their own electricity and live a greener lifestyle.