What is the Legionella risk with Automist? Technical Support July 06, 2019 14:46 Updated Follow Automist is dry pipe system, which is drained after commissioning and therefore mitigates the chances of legionella. Download our legionella risk assessment. Related articles Do I really need a fire door between ground and first floor? Can I add battery backup? How much does the annual maintenance cost? Is Automist suitable for high rise retrofit? Has Automist Smartscan Hydra been tested against real-life scenarios? Comments 0 comments Please sign in to leave a comment.