What Is Planned Preventive Maintenance (PPM)?

Planned preventive maintenance (PPM) is maintenance carried out on a planned schedule to keep building assets and systems working reliably and safely — before they fail, rather than after. Instead of waiting for the boiler to break down or the fire alarm to fault, PPM services and checks each asset at set intervals to catch wear and problems early. It's the backbone of professional facilities management.

This article explains what PPM is and why it matters.

Planned vs reactive maintenance

The contrast is with reactive (or "run-to-failure") maintenance, where you fix things only when they break. Reactive maintenance feels cheaper because you're not spending until something fails — but failures are disruptive, often more expensive to fix, and sometimes dangerous. PPM trades a predictable, planned cost for far fewer unexpected failures, longer asset life, and better safety and compliance.

What PPM covers

A PPM programme typically schedules planned tasks for a building's key assets and systems, including:

• Heating, ventilation, and air conditioning (HVAC).
• Boilers and hot water systems.
• Electrical systems and emergency lighting.
• Fire safety systems (alarms, extinguishers, dampers, doors).
• Lifts and escalators.
• Water systems (including legionella control).
• Building fabric and the envelope.
• Generators and critical plant.

Many of these have statutory or manufacturer-recommended servicing intervals, so PPM is partly about staying compliant and partly about reliability.

How PPM works

A PPM system is built around a few core elements:

1. An asset register — every maintainable asset, with its location and details.
2. Maintenance schedules — the tasks and intervals for each asset (often from manufacturer and statutory requirements).
3. A planner/calendar — generating the work due in each period.
4. Task completion records — what was done, when, by whom, with results.
5. A loop back to repairs — issues found during PPM feeding into corrective work.

Why PPM matters

The benefits are concrete: fewer breakdowns and less downtime, longer asset life, predictable budgeting, improved safety, and — importantly — compliance. Many building systems have legally required servicing and inspection (fire safety, lifting equipment, electrical, water hygiene), and PPM is how you ensure these happen on time and are recorded. Missed statutory maintenance is both a safety and a legal risk.

Records are central

PPM lives or dies on records. The value isn't just doing the maintenance — it's being able to show, asset by asset, that planned tasks were completed on schedule, with results and any follow-up. This documented history supports compliance, warranty claims, asset management decisions, and audits.

Capturing it digitally

Managing PPM on spreadsheets and paper becomes unwieldy fast — dozens or hundreds of assets, each on different schedules, with tasks falling due constantly. A digital tool (a CAFM/maintenance system or inspection app) holds the asset register, schedules tasks, flags what's due, captures completion with photos on site, and maintains the auditable record — making a real PPM programme practical to run and prove.

Key takeaways

Planned preventive maintenance services and checks building assets on a planned schedule to prevent failures, extend asset life, and stay compliant — the opposite of reactive run-to-failure maintenance. It's built on an asset register, maintenance schedules, a planner, and completion records. Its value depends on those records, which demonstrate that planned (and statutory) tasks were done on time.