Will is a Passivhaus Certifier, Passivhaus Designer and Mechanical Engineer focusing on building fabric, moisture and heat transfer. He has technical and practical experience in construction with a focus on energy efficiency, improving existing buildings, and sustainable design. Will has a particular interest in achieving energy performance in practice, with input on quality assurance during construction and post occupancy monitoring. Will is a Director of Etude, an advisor on the RIBA Sustainable Futures Group and teaches on the AECB Carbonlite Passivhaus Designer Course.