When looking for a smart thermostat to make a difference in heating costs, consumers often get swamped in a jungle of terminology and great-sounding features. Which of these features and qualities will actually do its job and to add value for me?

Peter Thompson, General Manager of ISO-CHEMIE UK, provides an insight into the trade-off between airtightness and ventilation in sealing products.

Introducing Aktivhaus, a triple zero home that generates 200% energy. The design is based on spaces and shows how even the smallest of London sites could use this model. As the design is also stackable, in the future, it also could also apply to med-high rise developments.

Rory Bergin, Head of Sustainability & Innovation at HTA, the architecture firm commissioned by VELUX to design its CarbonLight Homes, explains how technology can be used to provide energy efficiency and comfort.