Preventive Planned Maintenance (PPM) has long been considered a cornerstone of effective asset management. The logic is simple: service equipment regularly, replace parts before failure, and reduce the risk of costly breakdowns. On paper, it sounds like the perfect solution to the pitfalls of reactive maintenance.
But what if your PPM strategy is quietly draining your budget instead of protecting it?
The Hidden Cost of “Playing It Safe”
Reactive maintenance is easy to criticise. Equipment fails unexpectedly, operations[IS1.1] halt and emergency repairs often come with premium labour costs and expedited parts.
PPM, however, isn’t without its flaws.
In many organisations, maintenance schedules are based on fixed intervals rather than actual equipment condition. This often leads to:
• Unnecessary part replacements – Components are swapped out long before the end of their useful life.
• Excessive engineer hours – Skilled technicians spend time servicing assets that are functioning perfectly well.
• Operational interruptions – Planned downtime that may not have been needed in the first place.
Over time, these inefficiencies add up and begin quietly eroding the cost-saving benefits PPM is supposed to deliver.
When Prevention Becomes Waste
The core issue lies in assumption-based maintenance. Traditional PPM operates on the belief that failure can be avoided by adhering to a fixed schedule. But equipment doesn’t always follow predictable timelines.
Two identical machines operating under different conditions will wear at different rates. Yet PPM often treats them the same.
The result?
• Over-maintenance of low-risk assets
• Under-attention to high-risk ones
• A growing gap between effort spent and value gained
In essence, you may be preventing failures that were never going to happen while missing the ones that matter most.
The Real Question: What Are You Optimising For?
Many organisations implement PPM with the goal of reducing risk. But without visibility into actual asset condition, they end up optimising for activity rather than outcomes.
It’s worth asking:
• Are you maintaining assets because they need it, or because the schedule says so?
• Are your engineers solving problems or just ticking boxes?
• Is your maintenance strategy reducing downtime or just redistributing costs?
Moving Beyond Traditional PPM
The most effective maintenance strategies today are shifting away from rigid schedules toward data-driven approaches.
By incorporating condition monitoring, performance data and predictive insights, organisations can:
• Intervene only when necessary
• Extend asset life without increasing risk
• Allocate engineering resources more effectively
This doesn’t mean abandoning PPM altogether, but it does mean refining it. A hybrid approach, combining preventive and predictive methods, often delivers the best balance between reliability and cost control.
Striking the Right Balance
Neither reactive maintenance nor traditional PPM is inherently “wrong.” The problem arises when either is applied without flexibility or insight.
Reactive maintenance is expensive because it waits too long.
PPM can be expensive because it acts too soon.
The goal is to find the balance in between where maintenance is performed at the right time, for the right reason and with measurable value.
Final Thought
If your maintenance team is always busy but costs keep rising, it may be time to take a closer look at your PPM strategy as sometimes, the systems designed to save you money are the very ones costing you the most.
