David has grown up with renewables as his family had a business in South Africa manufacturing Solar systems and Air source heat pumps from 1979. He was involved with the design and installation of systems as well as the development of new products and building integration methods. This led to an interest in the relationship between the performance of building fabrics as well as the development of building methods within the environment of the location and the intended lifestyle patterns of the occupants combined with the sensitive use of appropriate renewable and conventional heat and energy systems.

David is an authority in sustainable building and energy efficiency, with extensive knowledge in building fabrics, heating systems, heat recovery ventilation, emerging technologies and renewables, including heat pump technologies, Solar systems, biomass and also conventional heating systems.

David has a Masters degree in Sustainable Architecture (Advanced Energy and Environmental Studies), is a fully qualified Gassafe and renewables installer and has 30 years experience in the industry. He has been the Sustainable building Expert at Grand Designs live exhibitions for 10 years, writes for Homebuilding and Renovating magazine, is a member of the Gloucester Design review panel, often presents CPDs and courses, and is a guest speaker at the National Selfbuild & Renovation Centre.

Passionate about healthy efficient homes, he often works with architects and house builders and designs and project manages appropriate performance technologies and heating systems to achieve the healthiest outcome for every home, energy efficiently and cost effectively.