CIBSE PUBLICATIONS | GUIDE M MAINTAINING PERFORMANCE A substantial update of Guide M with a focus on controls, competence and energy and wellbeing, among many other areas, has taken place. Lead author Joanna Harris offers an overview of this key document, which aims to ensure the design community and Facilities Managers deliver operational building performance 14 October 2023 www.cibsejournal.com C IBSE Guide M: Maintenance engineering and management is considered the go to guide for the facilities management (FM) industry. Everything you need to know about operating buildings services is introduced and explained in this guide, and references to more in-depth resources are also provided. The guide is based on UK best practice, updated for this third edition by volunteers, who each led on a chapter, or two, where they have knowledge of the subject and industry experience. There was an open call for contributors to volunteer their expertise. Health, wellbeing and safety Topical subjects are covered, including wellbeing, which has come into sharp focus since Covid. Lessons learned from the pandemic include the change in how people use buildings, and how management and maintenance that focuses on occupants can help organisations bring staff back into facilities. Lessons learned from the Grenfell tragedy in the UK and the resulting change in legislation and how this affects facility operators in terms of fire safety have been provided, along with an update of all the legislation guidance. The need for the industry to take competence more seriously is another lesson learned from Grenfell, and the subject is covered in more detail than in the 2014 version.Energy and carbon are subjects that have undergone a lot of change since the previous edition. The content has been updated to cover the need for an energy management policy and capturing and using the energy-use data, and it explains what is required from an energy management system. Advice on low carbon and renewable systems has also been introduced. Technology and controls Controls can support the management of facilities more than at any time in the past. Advances in technology have required the subject to be almost completely rewritten in the guide, sharing current best practice from the Building Controls Industry Association. This includes the importance of the description of operation, how systems