What is Unplanned Maintenance? (The Ultimate Guide)

Learn what unplanned maintenance is, the different types and how to reduce downtime to keep operations running without costly surprises.
The FieldEx Team
July 16, 2025
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Here’s a scenario: You’re knee-deep in a critical project, and suddenly, a crucial piece of equipment decides to quit on you. No warning, no farewell note, just an abrupt shutdown. Chaos ensues. Deadlines are missed. Costs pile up.

Sound familiar? That, right there, is unplanned maintenance in action.

Unplanned maintenance refers to any repair or servicing that happens unexpectedly due to an unforeseen equipment failure. Unlike planned maintenance, which follows a schedule, unplanned maintenance disrupts operations, costs money, and can even compromise safety.

But here’s the thing – it’s not always avoidable.

In this blog, we’ll dive deep into what unplanned maintenance is, why it’s a costly affair, and how you can get ahead of it before it wreaks havoc on your operations. Let’s get started!

Tired of Surprise Breakdowns? FieldEx gives you the power to prevent failures before they happen. From automated PM schedules to real-time work order tracking, we help you ditch the chaos of reactive maintenance. Want to see FieldEx in action? Book a free demo today, or reach out with any questions you may have. We’re here to help.

What is Unplanned Maintenance?

Unplanned maintenance is any unscheduled repair or servicing that occurs due to an unexpected equipment failure. It’s usually reactive, meaning you don’t address the issue until something actually breaks down.

Unplanned Maintenance vs Planned Maintenance

  • Planned Maintenance: Scheduled upkeep to prevent failures (eg oil changes for vehicles).
  • Unplanned Maintenance: Emergency or corrective actions taken after a breakdown (eg fixing a machine that suddenly stops working).

Unplanned Maintenance Myths: What Most People Get Wrong

Unplanned maintenance is just another name for reactive maintenance.

  • While reactive maintenance falls under unplanned maintenance, some unplanned repairs are necessary in certain cases (more on that later!).

Only outdated equipment suffers from unplanned maintenance.

  • Even brand-new machinery can fail due to operator errors, power surges, or unexpected component defects.

The Real Cost of Unplanned Maintenance (and Why It Hurts)

Unplanned maintenance isn’t just inconvenient; it’s expensive. Here’s why:

1. Hidden Costs of Downtime

When critical equipment fails, your entire workflow can grind to a halt.

In industries like manufacturing, logistics and construction, downtime can cost thousands per hour. According to a study by Aberdeen Group, unplanned downtime costs industrial manufacturers an average of $260,000 per hour.

2. Safety & Compliance Risks

Sudden failures can lead to workplace hazards. For example, an HVAC failure in a food storage facility can lead to spoiled inventory, while electrical malfunctions in a factory can cause fires.

Non-compliance with industry regulations can also result in hefty fines.

3. Shorter Equipment Lifespan

Constant emergency repairs put excessive strain on machinery, leading to premature wear and tear. A study by Deloitte found that poor maintenance practices can reduce an asset’s lifespan by up to 30%.

Types of Unplanned Maintenance: Emergency, Corrective & More

Not all unplanned maintenance is created equal. Here are the main types:

1. Emergency Maintenance

  • Definition: Immediate repairs needed to prevent serious damage or safety hazards.
  • Example: A power outage causing a server room to overheat.

2. Corrective Maintenance

  • Definition: Fixing minor failures before they escalate into major problems.
  • Example: Replacing a leaking pump seal before it causes a complete motor failure.

3. Run-to-Failure Maintenance

  • Definition: Letting non-critical equipment run until it fails before replacing it.
  • Example: Replacing lightbulbs only when they burn out.

When (and Why) Unplanned Maintenance Might Actually Be a Smart Choice

While planned maintenance is the gold standard, some unplanned maintenance is strategic:

  • When replacing is cheaper than preventive maintenance. (Eg letting disposable components wear out before swapping them.)
  • When failure has minimal impact. (Eg office lights burning out vs a production line stopping.)
  • When assets are too unpredictable for preventive maintenance. (Eg some electronic components that fail unpredictably.)

How to Reduce Unplanned Maintenance and Downtime

The key to reducing unplanned maintenance isn’t eliminating it completely; it’s about controlling and minimizing its impact. Here’s how:

1. Implement Preventive Maintenance (PM)

  • Regular inspections and servicing prevent unexpected failures.
  • Example: Changing HVAC filters regularly to avoid sudden system failure.

2. Leverage Predictive Maintenance (PdM)

  • Use IoT sensors and AI to predict when failures might happen.
  • Example: Vibration sensors on motors that detect early signs of wear.

3. Optimize Spare Parts Inventory

  • Keep critical replacement parts stocked to reduce downtime.
  • Example: Keeping extra bearings, belts and circuit boards on hand.

4. Use a CMMS to Track Maintenance Trends

  • A CMMS (Computerized Maintenance Management System) helps track maintenance history, automate work orders, and reduce downtime.
  • Example: FieldEx CMMS automates preventive maintenance schedules, reducing the risk of surprise failures.

How a CMMS Helps Reduce Unplanned Maintenance

If unplanned maintenance is eating away at your productivity and profits, a CMMS can help you get back in control.

How a CMMS helps

  • Automates maintenance schedules to prevent unexpected failures.
  • Tracks asset performance to detect early warning signs.
  • Reduces emergency repair costs by improving maintenance efficiency.
  • Optimizes spare parts inventory so you’re never caught off guard.

It’s a Wrap!

Unplanned maintenance might be inevitable, but it doesn’t have to control your operations. By implementing preventive strategies and using the right tools – like FieldEx’s CMMS – you can reduce costly downtime, extend equipment lifespan and improve operational efficiency.

FieldEx gives you the power to prevent failures before they happen. From automated PM schedules to real-time work order tracking, we help you ditch the chaos of reactive maintenance. Want to see FieldEx in action? Book a free demo today, or reach out with any questions you may have. We’re here to help.

Frequently Asked Questions (FAQs)

1. What is unplanned maintenance?

Unplanned maintenance refers to any repair or servicing that happens unexpectedly, usually due to sudden equipment failure or a breakdown you didn’t see coming.

2. How is unplanned maintenance different from reactive maintenance?

Reactive maintenance is a type of unplanned maintenance. All reactive work is unplanned, but not all unplanned tasks are reactive; some may be chosen strategically (like run-to-failure).

3. What causes unplanned maintenance?

Common causes include poor preventive practices, operator error, sudden equipment failure, power surges, wear and tear, or lack of spare parts on hand.

4. Is unplanned maintenance always bad?

Not necessarily. In some cases – like with low-priority assets or cheap components – letting something run to failure can be more cost-effective than preventive care.

5. What industries are most affected by unplanned maintenance?

Industries with heavy equipment or critical uptime (such as manufacturing, construction, logistics and healthcare) are especially vulnerable to costly downtime.

6. How much does unplanned maintenance really cost?

It varies, but studies show it can cost thousands per hour in lost productivity, safety risks, and emergency labor, especially in large industrial settings.

7. How can I reduce unplanned maintenance in my operations?

Start with preventive and predictive maintenance strategies, track asset history, stock critical spare parts, and use a CMMS to manage it all efficiently.

8. Can a CMMS help prevent unplanned maintenance?

Absolutely. A CMMS automates schedules, tracks equipment data, and sends alerts when assets need attention, helping you fix things before they break.

9. What’s the difference between emergency and corrective maintenance?

Emergency maintenance is urgent and unplanned, done to prevent immediate damage. Corrective maintenance is also unplanned but typically less urgent and done before a small issue gets worse.

10. How do I know if I’m relying too much on unplanned maintenance?

If you’re always scrambling to fix things last-minute, frequently dealing with breakdowns or struggling to meet SLAs, chances are your unplanned maintenance is out of control.

11. Is there a tool that can help reduce unplanned maintenance?

Yes, a good CMMS (Computerized Maintenance Management System) can help you stay ahead of breakdowns by tracking assets, automating schedules and flagging issues early. FieldEx does all that – and more – in ONE easy-to-use platform.

12. How can I organize my maintenance tasks better?

If your current system is a mix of spreadsheets, emails and guesswork, it's time for something smarter. 

FieldEx helps you centralize work orders, track job progress and get real-time updates across your team.

13. What’s the best way to track equipment maintenance history?

A CMMS like FieldEx automatically logs every repair, service and inspection. This means you can see patterns, plan replacements and stop fixing the same thing over and over.

14. How do I get started with FieldEx?

Easy! Just schedule a free demo, and see how FieldEx helps you reduce downtime, automate maintenance and stay in control, without drowning in admin.

Got questions? Just get in touch! We’re here to help.

Related reads:

  1. What is Preventive Maintenance? (The Complete Guide) 
  2. Top 7 Causes of Equipment Failure (and Fixes with CMMS)
  3. What is CMMS Software? Definition, Benefits, How it Works
  4. 15+ Benefits of CMMS in 2025 
  5. CMMS Integrations: The Essential Guide to Smarter Maintenance
  6. What to Consider Before Buying a CMMS Software 
  7. Step-by-Step Guide to Selecting the Right Maintenance Strategy
  8. The Ultimate Guide to Predictive Maintenance 
  9. 7 Steps to Building a Preventive Maintenance Program 
  10. Choosing a Maintenance Strategy for Your Assets 
  11. Implementing Predictive Maintenance in Manufacturing: Best Practices
  12. What is Field Service Management? A Complete Guide
  13. Top 9 reasons why FieldEx is your best field service partner
  14. The 7 Types of Maintenance (Explained)
  15. Proactive vs Reactive Maintenance: Key Differences, When to Use 

About the Author

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The FieldEx Team

FieldEx is a B2B field service management software designed to streamline operations, scheduling, and tracking for industries like equipment rental, facilities management, and EV charging, helping businesses improve efficiency and service delivery.

Complex operations simplified with one software.

No paperwork. No spreadsheets. No blindspots. Just one solution that simplifies your field service operations.
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