A well-maintained diesel generator can last 20 to 25 years, or roughly 30,000 to 50,000 hours, depending on its operation and maintenance. With routine servicing every 500 hours of use, you can prevent avoidable wear and keep your generator performing at its best.
In this guide, we explore what can shorten a generator’s lifespan and how you can extend it instead.
What Can Reduce a Diesel Generator’s Lifespan?
1. Overuse or Underuse
Many commercial sites run generators at high capacity for long periods. This is normal, and modern diesel generators are designed to handle continuous operation.
However, when a generator is running heavily day-to-day, regular preventative maintenance becomes essential. Completing scheduled services, particularly 500-hour services, helps prevent avoidable issues and keeps performance consistent.
On the other hand, not using your generator often or leaving it idle for long periods can be more damaging. Stale fuel, moisture buildup and unmoved components can lead to internal wear when the generator is eventually restarted.
2. Incorrect Sizing
Choosing the wrong size generator for your application is a common mistake.
- Too small? It will be overworked, wearing out components quickly.
- Too large? If it never runs near full capacity, internal parts can clog and deteriorate.
3. Lack of Maintenance
Routine maintenance is critical for long-term performance.
Generators should have in-depth servicing every 500 hours, which typically includes:
- Oil changes
- All filter changes
- Complete system inspections
- Alternator checks and testing
- Overall performance assessments
Skipping these can put unnecessary strain on the engine and other major components.
4. Improper Storage
Improper storage of your generator can lead to rust and electrical issues, especially if it is stored in a damp, poorly ventilated area.
If your generator isn’t in use:
- Run it periodically
- Carry out basic checks to ensure everything is operating correctly
This helps keeps internal parts moving, prevents fuel from becoming stale, and avoids moisture-related problems.
5. Damaged Cooling Systems
Generators produce heat, so a functioning cooling system is vital. Check coolant levels regularly and flush the radiator to remove dirt and debris that could block the system.
How to Increase the Lifespan of Your Diesel Generator
Here are our top recommendations:
- Consult a specialist: Get expert advice to choose the right generator for your needs.
- Maintain regularly: Schedule servicing and checks to keep everything running smoothly.
- Store properly: Follow the storage tips above.
- Fix issues promptly: Address problems before they escalate.
Why Hiring a Generator Can Be a Smart Choice
Owning a generator comes with responsibilities, such as maintenance, servicing, storage, and upfront costs. For many businesses, hiring is a more practical solution.
Here’s why:
Cost Savings
Buying a generator is a significant investment, especially for short-term projects. Hiring allows you to access the equipment you need without the high upfront cost.
No Maintenance Hassle
When you hire, the provider handles all servicing and repairs. This saves you time, money, and the stress of unexpected breakdowns.
Access to Modern Equipment
Hire companies often supply the latest, fuel-efficient generators, ensuring you benefit from improved performance and reliability without upgrading your own equipment.
Flexibility for Projects
Hiring gives you the freedom to choose the right generator size for each job. You can scale up or down as needed without being tied to a single machine.
Perfect for Emergencies
If you need power quickly, hiring ensures immediate availability without waiting for purchase and delivery.
Looking to Hire a Diesel Generator?
Maintaining your own generator can be time-consuming and costly. Hiring one might be the smarter option.
At Star Power, we offer a wide range of diesel generators for different applications. Need help choosing the right equipment? We’ve got an in-depth guide to generator hire that you can look through.
Still need support? Call our team today, we’re here to help!
And if you need a powered access platform for your next project, check out our sister company, Star Platforms, for a variety of diesel and electric options.
Star Power Editorial Team at Star Power
Star Power Marketing is the official voice of our temporary power solutions team. We deliver full-service, bespoke power setups for construction sites, live events, broadcast productions, and emergency response projects across the UK.
Our content reflects our commitment to reliability, safety, and practical knowledge - highlighting projects, service developments, and industry guidance designed to support your power needs.
Our content reflects our commitment to reliability, safety, and practical knowledge - highlighting projects, service developments, and industry guidance designed to support your power needs.
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