What is an O&M Manual?
An O&M (operation and maintenance) manual is the handover documentation that tells building teams how to operate and maintain a building's systems. This guide explains what it contains, why it matters, and how to keep it usable.
In short
An O&M manual (operation and maintenance manual) is the compiled set of information handed over at the completion of a building or project, describing how to operate, maintain, and service its systems and equipment. It includes manufacturer data, drawings, certificates, maintenance requirements, and asset details.
What an O&M manual contains
An O&M manual brings together everything a building team needs to run and maintain the installed systems. On a large project it can run to thousands of pages across dozens of volumes, compiled from contractors and manufacturers. The breadth is exactly what makes it valuable — and what makes finding a specific answer in it so difficult.
- System descriptions and how each installation operates
- Manufacturer technical data, manuals, and spare parts lists
- As-installed drawings and schematics
- Maintenance requirements and recommended frequencies
- Commissioning records and test certificates
- Statutory and warranty documentation
- Asset registers and equipment schedules
Why O&M manuals matter
The O&M manual is the knowledge that lets a building be operated safely and efficiently after the people who built it have gone. When a fault occurs, an engineer needs the right settings, the isolation points, the manufacturer's instructions. When a system needs servicing, the maintenance regime comes from here. When a building is sold or re-let, the O&M information is part of its value and its compliance evidence. A poor or inaccessible O&M pack costs time on every single fault and maintenance task for the life of the building.
The problem with traditional O&M packs
Traditional O&M manuals are delivered as enormous PDF packs or boxes of folders. The information is all there, but it is practically unsearchable: an engineer needing one valve's specification might face scrolling through hundreds of pages across multiple files. As a result, O&M packs are often left unopened and teams rely on memory or guesswork instead. The modern answer is to make the O&M library searchable in plain language, so any team member can ask a question and get a sourced answer in seconds — turning a dead archive into a live knowledge base.
Frequently asked questions
Turn your O&M manuals into instant answers
PM Assist indexes your entire O&M library and answers plain-language questions with page-level citations — so your team finds what they need in seconds, not hours.
- Upload and organise building documentation
- AI-powered search across all your manuals
- Source-cited answers for every query
- Team collaboration and access control
- No credit card required to start