Andrew was appointed as the Church of Scotland General Trustees heating consultant in 2000 and provides services as an external adviser. Work for the Church has included ‘Better Heating Scheme surveys’ of approximately 800 churches and manses and over 40 commissions for design of heating systems in church properties. The latter has presented challenges in designing services installations which are both sympathetic to the character of the building and compliant with current standards, providing energy efficient design solutions and more recently considering Zero Carbon goals.