Generator Servicing and Maintenance in the UK
Keeping Your Generator in the very best condition
Your diesel generator needs regular care to deliver reliable power when you need it most. Powertech Generators provides expert servicing, maintenance, and repairs across the UK. Whether you’re looking for routine checks, cooling system inspections, or emergency repairs, we’re here to help.
Our goal is to ensure that your generator runs smoothly, avoiding costly downtime and maintaining a consistent power supply for your needs.
Why Regular Generator Maintenance Is Essential and will save you money in the long run.
Generators ensure you have backup power during outages. Without regular maintenance, issues like wear, low coolant levels, or clogged filters can cause breakdowns. Routine servicing keeps your generator running efficiently, reduces the risk of unexpected failures, and helps avoid expensive repairs or replacements in the long run.
Benefits of Regular Servicing
Better Reliability: Regular checks help prevent unexpected failures, ensuring your generator is ready when you need it.
Longer Lifespan: Addressing minor issues early extends the life of your equipment and maximises its value.
Improved Performance: Clean oil and filters ensure smooth operation and optimal performance.
Cost Savings: Preventative care reduces the need for major repairs and helps you avoid unplanned expenses.
Compliance: For businesses, regular servicing ensures you meet safety and operational standards.
Why Choose Powertech Generators?
Experienced Professionals
Our team has years of experience working with all major generator brands and models. Whether your generator is for commercial, industrial, or residential use, you can trust us to provide expert care and solutions.
Nationwide Service
We provide reliable support across the UK, offering consistent service no matter where your business or property is located. Our network of technicians ensures that help is always nearby.
Fast Response Times
We know downtime isn’t an option. Our team is equipped to handle emergencies promptly, restoring your generator’s functionality with minimal delay.
Don’t wait until a problem arises. Contact our team today to schedule a service, discuss a maintenance plan, or request emergency support. Our team is here to keep your power supply dependable and your generator running smoothly, ensuring you’re always prepared for any power outage.

Hire a Generator
We have a wide range of generators for hire. Get in touch for more info!
Frequently Asked Questions
How often should I service my diesel generator?
You should service your generator at least once a year or after every 250 hours of operation. If your generator is used frequently or operates in harsh conditions, more regular servicing may be necessary.
What does a maintenance plan include?
Our maintenance plans cover oil and filter changes, coolant level checks, wear and tear inspections, spare parts management, and detailed reports of all work performed.
Do you offer emergency repairs?
Yes, we provide 24/7 emergency repair services to quickly address issues like fuel system blockages, battery failures, or cooling system malfunctions.
What happens during a cooling system check?
We inspect radiators, hoses, and coolant levels to ensure the system is effectively preventing overheating. We also check for leaks or signs of wear.
Do you supply spare parts?
Yes, we stock a wide range of spare parts compatible with most major generator brands, ensuring quick replacements during servicing or repairs.
What is load testing, and why is it important?
Load testing checks your generator’s ability to handle its rated load. It helps identify potential issues under real-world conditions and ensures your generator is ready for emergencies.
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How To Understand When Your Generator Needs Servicing
Knowing the signs of when your generator needs servicing can help you avoid major issues. Here are a few things to look out for:
Difficulty starting, which can indicate battery or fuel problems
Strange noises during operation, such as grinding or knocking
Low or inconsistent power output, which affects reliability
Visible damage, leaks, or corrosion on components
Increased fuel consumption, which could point to inefficiency
Addressing these issues early can prevent costly repairs and ensure your generator remains dependable.
What We Check During Servicing
Our detailed inspections cover all critical components of your generator to ensure reliable operation. This includes:
Cooling Systems: Inspecting radiators, hoses, and coolant levels to prevent overheating and extend the life of your generator.
Oil and Filters: Ensuring proper lubrication and replacing worn-out filters to maintain efficiency.
Battery Systems: Testing voltage, cleaning terminals, and checking connections for reliable start-up performance.
Exhaust Systems: Checking for leaks or blockages that could reduce efficiency or cause safety hazards.
Control Panels: Verifying proper operation of controls, alarms, and monitoring systems.
Fuel Systems: Inspecting fuel lines, filters, and injectors to prevent clogs and ensure proper flow.
Services We Offer
Comprehensive Diesel Generator Maintenance
Our thorough servicing ensures your generator stays in excellent condition. We provide detailed checks and services designed to cover all aspects of your generator’s functionality. Here’s what we can offer you:
Filter Changes: Replacing air, oil, and fuel filters to keep your system clean and efficient.
Oil and Coolant Level Checks: Preventing overheating and ensuring proper lubrication for smooth operation.
Wear and Tear Inspections: Identifying and fixing small problems before they escalate into major issues.
Spare Parts Replacement: Using high-quality components for reliable and long-lasting repairs.
Load Testing: Verifying your generator’s ability to handle its full rated load and identifying potential issues under stress.
Emergency Generator Repairs & Call Outs
Breakdowns can happen at any time, and they often occur when you least expect them. Our emergency repair service ensures your generator gets back online quickly to minimise disruption. Common issues we resolve include:
Fuel blockages that hinder proper operation
Battery malfunctions leading to start-up failures
Cooling system failures causing overheating
Control panel errors impacting system operation
Electrical faults in wiring or connections
Our rapid response team is available 24/7 to ensure your generator is repaired efficiently and effectively.
Tailored Maintenance Plans
We can offer custom maintenance plans to fit your specific needs. Whether you have one generator or a fleet, we can create a plan that ensures regular servicing and timely inspections. These plans include:
Scheduled site visits tailored to your operation hours
Comprehensive system checks to cover all key components
Spare parts management to ensure quick replacements when needed
Detailed maintenance records to help track service history and plan future upkeep
Our plans are flexible and designed to give you peace of mind while keeping your generator in top condition.