Atze Boerstra is managing director of BBA Binnenmilieu, a Dutch consultancy firm (based in The Hague) specialized in Healthy Building, Indoor Air Quality & Thermal Comfort. He has a background in Mechanical Engineering (specialization: HVAC technology) and has a PhD in building science from the Eindhoven University of Technology. He is specialized in the investigation of ‘sick’ buildings and the design of healthy buildings and healthy building service systems. He also has many years of experience with indoor climate related law suits and indoor air & comfort related policy advice for both local and central governments. He is an active member and former board member of TVVL, the Dutch HVAC association. Since mid-2016 he is also vice-president of REHVA.