Established in 1904, the Building Engineering Services Association (formerly the Heating and Ventilating Contractors’ Association – HVCA) is the UK’s leading trade organisation for building engineering services contractors. We represent the interests of firms active in the design, installation, commissioning, maintenance, control and management of engineering systems and services in buildings. BESA takes an active interest in the building services and wider construction industries, voicing the views of our members and driving initiatives that represent the best interests of those who work within the built environment including actively encouraging diversity in our sector.