New guidance is published this week that provides methods for addressing potential noise issues when addressing overheating of buildings. Where buildings require mechanical ventilation or cooling, or open windows or vents, to maintain a comfortable temperature, there is a potential for occupants to be disturbed by noise.  This guidance for practitioners, is designed to accompany Building Regulations (Approved Document O ‘Overheating’ (England)) which introduced requirements for ensuring buildings do not overheat.