What Should Your CMMS Actually Tell You? A Practical Guide for Maintenance and Operations Leaders

A Computerised Maintenance Management System should do more than log work orders and schedule PMs. Used well, it should give maintenance managers, operations leaders and asset teams the information they need to make confident decisions — about where to focus resources, when to act, and how to make the case for investment.

The gap between what a CMMS should tell you and what most teams are actually getting out of theirs is significant. After more than 20 years working with asset-intensive organisations, we have seen what good looks like. This guide sets out the questions your CMMS should be able to answer — and what it means if it can’t.

What is a CMMS and what is it for?

A CMMS — Computerised Maintenance Management System, is a software platform that centralises maintenance management across an organisation. It manages work orders, asset records, preventive maintenance schedules, spare parts inventory and maintenance history in a single system.

At its most basic, it replaces spreadsheets and paper-based processes. At its most effective, it becomes the operational backbone for asset-intensive organisations — providing the data needed to move from reactive, breakdown-driven maintenance toward a planned, predictive approach that extends asset life and reduces unplanned downtime.

The distinction between a CMMS and an EAM (Enterprise Asset Management) system is worth noting. A CMMS focuses primarily on maintenance operations. An EAM covers the full asset lifecycle — from procurement and commissioning through to disposal — and typically integrates more deeply with finance, procurement and compliance functions. For complex, asset-heavy organisations, an EAM often provides broader capability. For maintenance-focused teams and mid-market operations, a well-implemented CMMS delivers significant value.

What should a CMMS tell you?

The following questions represent the baseline of what a properly configured and well-used CMMS should be able to answer. If your system cannot address these, it is worth understanding why.

Which assets are causing the most downtime?

Your CMMS should be able to rank assets by total downtime over any given period. This is the foundation of a reliability improvement programme. Without it, maintenance prioritisation defaults to whoever is loudest or whatever broke most recently rather than what is actually driving the most operational disruption.

To answer this question accurately, work orders must be linked to specific asset IDs, not general areas or locations, and downtime hours must be captured as a distinct field, separate from labour hours.

What is the ratio of planned to unplanned maintenance?

The split between scheduled preventive maintenance and reactive breakdown work is one of the clearest indicators of maintenance maturity. A high proportion of unplanned work suggests either that the PM programme is not targeting the right failure modes, that work is not being captured consistently, or both.

Industry benchmarks generally suggest that high-performing maintenance operations run with unplanned work below 20% of total maintenance activity. Most organisations we work with are well above that when they first audit this number honestly.

Are our preventive maintenance tasks actually preventing failures?

This is a question most CMMS systems can support but most teams never ask. If an asset continues to fail despite regular preventive maintenance, either the PM tasks are wrong, the intervals are wrong, or both. Your CMMS history should allow you to cross-reference PM completion records against breakdown frequency for the same assets. If the PMs are not reducing failures, the programme needs revision.

What does each asset actually cost to maintain?

Total cost of ownership per asset (covering labour, parts, contractor costs and downtime impact) should be visible in your CMMS. This is the data that supports capital expenditure decisions. When an asset’s ongoing maintenance cost approaches or exceeds its replacement value, that case needs to be made with numbers, not anecdote. A CMMS that cannot produce this figure is leaving one of its most valuable capabilities unused.

Where are the gaps in our maintenance history?

Work capture rate, the proportion of actual maintenance activity that ends up recorded in the system, is a metric few teams measure but most should. If technicians are performing work that is not being logged, your asset history is incomplete, your cost data is understated and any decisions made from that data carry hidden risk.

Are we meeting our compliance and audit obligations?

For regulated industries, i.e. healthcare, food and beverage, utilities, oil and gas — the ability to demonstrate that maintenance was performed on schedule, by a qualified person, with the right parts and sign-off, is not optional. Your CMMS should make producing that evidence straightforward, not laborious. If preparing for an audit means manually compiling records from multiple sources, the system is not doing its job.

What does the next 90 days of maintenance look like?

Forward visibility of scheduled maintenance, including resource requirements and parts needs, is what allows maintenance to integrate with operations planning rather than constantly reacting to it. A CMMS should be able to show upcoming workload across assets, sites and teams so that scheduling conversations can happen in advance rather than on the day.

Why do so many CMMS systems fall short of this?

The honest answer is that the technology is rarely the limiting factor. The more common reasons are:

• The system was configured at implementation and never revisited as the operation evolved.
• Work order practices are inconsistent across the team, meaning the data going in is incomplete or fragmented.
• The asset register is out of date or structured in a way that prevents meaningful analysis.
• Failure and fault codes are too generic to support root cause analysis or trend identification.
• The system was selected and deployed without enough consideration of how the data would actually be used.

These are solvable problems. But solving them requires both a clear picture of what the system should be producing and the experience to know how to close the gap between current state and that benchmark.

How do you know if your CMMS is the right fit?

There is also a more fundamental question worth asking. Sometimes the gap between what a CMMS is delivering and what the operation needs is not a configuration problem. It is a capability problem. The system being used was the right choice at a certain scale or complexity level, but the organisation has grown beyond it.

For operations managing large, complex asset portfolios with significant compliance requirements, deep integration needs across finance and procurement, or multi-site visibility requirements, a CMMS may no longer be sufficient.

An EAM platform may be the more appropriate foundation.

Equally, for organisations that have invested in an enterprise EAM but find that field technicians are working around it rather than in it, the problem may be that the system is too complex for day-to-day use and a more technician-friendly CMMS would drive better adoption and therefore better data.

The right answer depends on the specifics of the operation, not on what a vendor’s sales team recommends.

Getting more from what you have or finding what fits better

Whether the path forward is improving how your current system is configured and used, or evaluating whether a different platform would serve your operation better, the starting point is the same: an honest assessment of what your CMMS is currently telling you versus what it should be.

MCGlobal has been helping asset-intensive organisations answer that question for more than 20 years. We work across both CMMS and EAM environments, which means we are not invested in pointing you toward any particular solution. We are invested in finding the right one for your operation.

If the questions in this guide surfaced some gaps worth addressing, it is worth a conversation about where those gaps are coming from and what it would take to close them.

Chat to our experienced team to find out what your maintenance system/CMMS isn’t telling you.