Truly fresh air circulates throughout the building. A discreet, central ​Mechanical Ventilation with Heat Recovery ​system (​MVHR​) cleanses airborne germs and particulates (such as pollen) from the home and controls humidity, helping to relieve hay-fever, rhinitis and asthma. Carefully selected passive materials such as lime plaster also help to soak up harmful gasses, control humidity and minimise mould. ​Ecospheric have exceeded the Passivhaus Institute’s requirements by aiming for a petrochemical free building fabric, focusing on natural, breathable materials that avoid harmful off-gassing. Photo: Rick McCullagh