Condition-Based vs Time-Based Maintenance: The Real Cost Difference (2026)
Condition-based maintenance cuts costs 12-18% vs time-based. Compare CBM vs preventive maintenance with real Ontario plant data and transition framework.
Is Condition-Based Maintenance Better Than Time-Based?
Yes. Condition-based maintenance (CBM) reduces total maintenance costs by 12-18% compared to time-based preventive maintenance, according to Deloitte's 2024 Manufacturing Study. CBM replaces parts when data shows they need it. Time-based maintenance replaces parts on a calendar schedule — whether they need it or not. The result: CBM eliminates 30-40% of unnecessary preventive work orders while catching 70-80% of failures before they happen.
Ontario plants making the switch typically see payback within 12 months. Talk to our engineers about transitioning your maintenance programme.
The Cost Difference in Real Numbers
Time-based maintenance at a typical Ontario plant (100 rotating assets):
- 60-70% of PM work orders are performed on equipment that does not need service
- Parts replaced at 70% of useful life (30% wasted)
- Annual maintenance budget: $2.5M
- Unplanned downtime: 8-12 events per year ($180K each)
Condition-based maintenance at the same plant:
- PM work orders reduced by 30-40%
- Parts run to 90-95% of useful life
- Annual maintenance budget: $2.05-$2.2M (saved $300-$450K)
- Unplanned downtime: 2-4 events per year (prevented 6-8 at $180K each)
Net annual savings: $1.3-$1.9M (reduced maintenance + avoided downtime)
The Transition Framework
You do not switch from time-based to condition-based overnight. Here is the 12-month framework we use with Ontario clients:
Months 1-3: Baseline — Install monitoring on your 20 most critical assets. Collect vibration, temperature, and lubrication data. Do not change your existing PM schedule yet.
Months 4-6: Parallel — Run both programmes side-by-side. Compare condition data against your calendar-based schedule. Identify which PM tasks are unnecessary (you will find 30-40%).
Months 7-9: Transition — Begin extending PM intervals on assets where condition data shows good health. Reduce unnecessary work orders. Redirect those labour hours to condition-based inspections.
Months 10-12: Optimise — Fully condition-based on monitored assets. Calendar-based maintenance remains only on non-critical or unmonitored equipment. Measure KPI improvements.
Frequently Asked Questions
Does condition-based maintenance eliminate preventive maintenance entirely?
No. CBM supplements your PM programme, not replaces it. Calendar-based tasks remain for non-monitored assets, lubrication schedules, and regulatory-required inspections (CSA Z463, ESA). The goal is to eliminate unnecessary PM while catching failures that PM misses.
What equipment is needed to start CBM?
A portable vibration data collector (CAD $15,000-$45,000), an infrared camera (CAD $5,000-$20,000), and trained analysts. You can also outsource to a predictive maintenance provider who brings equipment and expertise.
How many assets should I start monitoring?
Start with your 10-20 most critical rotating assets — the ones where a failure shuts down a production line. Prove ROI on these before expanding. Most Ontario plants monitor 50-100 assets by year two.
Droz Technologies helps Ontario plants transition from time-based to condition-based maintenance. Talk to an engineer about your transition plan.
