What is Preventive Maintenance?
Preventive maintenance is the planned, routine upkeep and inspection of building systems and equipment to prevent breakdowns, ensure safety and maintain a comfortable workplace. It includes scheduled servicing, part replacement and condition checks before problems occur.
Preventive maintenance (PM) refers to regular, planned activities that keep workplace assets — such as HVAC systems, lifts, plumbing, lighting, security systems and furniture — operating reliably and safely. Rather than waiting for failures, facilities teams perform inspections, cleanings, part replacements, software updates and minor repairs on a time-based, usage-based or condition-based schedule. Increasingly, PM is supported by sensors and analytics (predictive maintenance) that trigger servicing when measurements indicate wear or abnormal performance. The goal is to reduce unplanned downtime, extend asset life and protect occupant comfort and safety.
Usage example
Before the busy autumn period, the facilities team runs preventive maintenance on office HVAC units — replacing filters, checking airflow and testing controls — to reduce the risk of failures and complaints when employees return to the office.
Practical application
Preventive maintenance matters because building performance directly affects employee experience and productivity. Well-maintained systems mean fewer service interruptions, better thermal comfort, improved air quality and reduced emergency repairs — all of which influence staff satisfaction and the perceived quality of workplace services. Practically, PM lets workplace teams plan budgets, reduce long-term repair costs, meet health and safety or compliance requirements, and show measurable improvements in facilities-related survey metrics (for example, fewer complaints about temperature or cleanliness over time). Combining PM data with recurring employee feedback and service-request trends helps teams prioritise work and demonstrate impact to stakeholders.
FAQ
How is preventive maintenance different from reactive maintenance?
Preventive maintenance is scheduled and performed to prevent failures, while reactive maintenance responds to breakdowns after they occur. PM reduces emergency repairs and unexpected downtime; reactive work is often more costly and disruptive.
How often should preventive maintenance be carried out?
Frequency depends on the asset, manufacturer guidance, usage patterns and risk. Some tasks are daily or weekly (e.g., cleaning filters), others quarterly or annually (e.g., HVAC servicing). Condition-based or predictive approaches use sensors and inspections to trigger work when needed, which can optimise timing and cost.
How can we measure whether our preventive maintenance programme is effective?
Key indicators include reduced number and cost of reactive repairs, longer asset lifespans, lower downtime, faster resolution times and improved occupant satisfaction scores for facilities. Linking PM activity logs with employee feedback and service-request trends gives a fuller picture of effectiveness and areas to improve.