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Last updated: 30th July, 2024

Guides

How Often Should You Get Your Boiler Serviced?

How Often Should You Get Your Boiler Serviced?

Key takeaways

  • Annual servicing is essential for keeping your boiler efficient and safe.
  • Regular maintenance keeps the manufacturer's warranty intact.
  • Use a Gas Safe registered engineer for proper servicing.

Boiler servicing involves conducting various checks and tests to ensure the boiler operates safely and efficiently. It helps prevent risks, maximises performance, and maintains legal compliance and warranty.

Maintaining your home's boiler is crucial for ensuring it runs efficiently and safely, especially in the UK where heating systems are vital. Regular servicing not only helps in detecting potential issues early, but also in keeping energy bills down. To keep your boiler in optimal condition, it is recommended that you service your boiler once a year.

A yearly boiler service keeps the manufacturer's warranty valid, which can last between 5 and 10 years. This warranty often requires proof of annual maintenance to cover any repairs or replacements. Moreover, servicing your boiler during the summer can prevent unexpected breakdowns in the winter, which is when you need reliable heating the most.

For homeowners, having your boiler serviced by a Gas Safe registered engineer guarantees the job is done to safety standards. Whether you have a gas or an oil boiler, professional servicing involves thorough checks to ensure your system is working correctly, which supports long-term efficiency and lowers repair costs over time.

What is Boiler Servicing?

Boiler servicing involves conducting various checks and tests to ensure the boiler operates safely and efficiently. It helps prevent risks, maximises performance, and maintains legal compliance and warranty.

Ensuring Safety and Preventing Risks

A key aspect of boiler servicing is safety. Engineers check for gas leaks and ensure the boiler burns fuel correctly, which helps avoid carbon monoxide poisoning. Safety checks include examining the flue, which vents harmful gases outside, and inspecting all seals and connections.

Issues such as faulty components or worn-out parts can be identified and fixed during a service. By doing this, the risk of accidents, such as gas leaks or explosions, is reduced. This gives homeowners peace of mind knowing their boiler is safe to use.

Maximising Efficiency and Performance

Regular expert boiler servicing helps improve a boiler’s efficiency. Engineers clean parts and remove any build-ups of grime or debris that could hinder performance. They also adjust settings to make sure the boiler runs as efficiently as possible.

Efficient boilers use less fuel to produce the same amount of heat, which can lead to lower energy bills. Moreover, a well-maintained boiler lasts longer and operates more reliably, reducing the likelihood of unexpected breakdowns. This ensures that the heating system works when needed, especially during colder months.

Maintaining Warranty and Legal Compliance

Many boiler manufacturers require regular servicing to keep the warranty valid. This means having the boiler checked annually by a Gas Safe registered engineer. If a problem occurs and the boiler has not been serviced, the warranty may be voided, leading to high repair costs.

In the UK, landlords must conduct annual gas safety checks by law. These checks ensure the boiler is safe for tenants to use. After the inspection, a Gas Safety Certificate is issued, which must be kept on record. This legal requirement helps protect tenants from risks associated with faulty boilers.

Regular servicing also ensures compliance with legal requirements, avoiding potential fines or legal issues. It is both a practical and legal necessity for maintaining a safe and efficient heating system.

How Often Should You Get Your Boiler Serviced?

Boilers should generally be serviced once a year. The type of boiler you have and other factors can influence how often you need servicing. Regular servicing ensures safety and efficiency.

Recommendations for Different Boiler Types

Combi Boilers

Combination boilers, or combi boilers, need annual servicing as well. Because they serve both your heating and hot water needs, regular checks are crucial to maintain their dual functions.

Regular Boilers

Regular boilers, otherwise known as heat-only boilers, should be serviced every year. This routine check helps in keeping them running efficiently and safely, ensuring the longevity of the unit.

System Boilers

System boilers also benefit from yearly servicing. This helps maintain their efficiency and safety. Regular checks ensure the system operates without issues, thus extending the life of the boiler.

Factors Influencing Service Intervals

Usage

If your boiler is used heavily, it might need more frequent servicing. High usage can cause more wear and tear, making regular checks even more critical.

Age of the Boiler

Older boilers typically require more frequent servicing. As boilers age, parts can wear out, making annual checks more crucial to prevent breakdowns.

Manufacturer Recommendations

Always check your boiler’s manual. Some manufacturers may have specific service recommendations that could differ from the usual annual check.

Warranty Requirements

Many boiler warranties require annual servicing to remain valid. Failure to follow this could void your warranty, leaving you liable for any repairs.

Environmental Factors

Homes in areas with hard water may need more frequent servicing. Hard water can lead to limescale buildup, affecting the boiler's efficiency.

Changes in Performance

If you notice any changes in your boiler’s performance, like strange noises or reduced heat output, it’s wise to get it serviced regardless of its last check-up date.

Who Can Service My Boiler?

To ensure your boiler is serviced correctly and safely, it's important to hire a qualified professional. You must look for specific certifications and consider recommendations to find the right expert.

Gas Safe Register and OFTEC Certifications

Gas Safe Register: In the UK, gas boilers must be serviced by a Gas Safe registered engineer. This registration ensures that the engineer is legally qualified to work on gas appliances. You can confirm an engineer's registration by checking their Gas Safe ID card or visiting the Gas Safe Register website.

OFTEC: For oil boilers, look for an engineer certified by OFTEC (Oil Firing Technical Association). OFTEC registration indicates that the engineer has the necessary training and qualifications to service oil-fired heating systems. Like with Gas Safe, you can verify an engineer’s credentials through the OFTEC website.

Hiring a professional with these certifications ensures your boiler is serviced safely and efficiently. This reduces the risk of dangerous malfunctions and maintains the system’s efficiency.

Finding the Right Professional for Your Boiler

Recommendations: Start by asking friends, family, or neighbours for recommendations. Personal experiences can provide insight into the reliability and quality of the engineer's work.

Online Reviews: Check platforms like Checkatrade or Trustpilot for customer feedback. These reviews help gauge an engineer’s reputation and service quality.

Quotes and Services: Contact a few engineers to get quotes. Compare what each service includes and ensure they provide comprehensive checks. Key tasks include inspecting the flue, checking for leaks, and testing the boiler’s performance.

Professional Affiliations: In addition to Gas Safe and OFTEC certifications, look for engineers who are part of professional organisations. Membership in groups like the Chartered Institute of Plumbing and Heating Engineering (CIPHE) can be an added assurance of quality.

By following these steps, you can find a qualified heating engineer who will keep your boiler running smoothly and safely.

How much does boiler service cost?

The price of boiler servicing can vary, depending on several key factors such as the type of boiler, location, and specific service requirements.

Average Prices and Influencing Factors

The cost of a one-off gas boiler service generally ranges from £80 to £120. The average price typically falls around £100. This includes a thorough inspection by a Gas Safe engineer, checking the boiler and its controls, searching for leaks, ensuring proper pressure, and testing the flue for toxic fumes.

For oil boilers, services are usually more expensive, often costing up to £120. LPG boilers also have their unique servicing needs and can cost around £110.

Geographical location can also affect prices. Services in major cities like London may cost more compared to rural areas. Seasonal demand can cause price fluctuations, so planning service during off-peak times may offer better rates.

Comparing One-off Service to Boiler Cover Plans

A one-off boiler service is a single payment to get the boiler inspected and serviced. While this can be between £80 and £120, unexpected repairs could increase overall expenses.

Boiler cover plans, such as those offered by British Gas under their HomeCare cover, provide regular servicing along with breakdown repair coverage. These plans typically cost around £15 to £20 per month, providing not just annual servicing but also peace of mind.

Though monthly premiums make the cost more manageable, comparing rates and coverage details is crucial to ensure the best deal. Some plans may include additional perks like priority call-outs or cover for other home services.

Choosing between a one-off service and a boiler cover plan depends on individual needs and budget, with each option offering distinct pros and cons.

The Inspection and Maintenance Process

Regular servicing is crucial for maintaining your boiler's efficiency and safety. This section covers the essential steps of a boiler service, including what engineers typically check and common issues they may address.

Boiler Service Checklist

During a boiler service, engineers perform several key tasks to ensure your boiler operates correctly and safely.

  • Visual Inspection: The engineer starts with a visual inspection of the boiler and surrounding area to look for any obvious issues or leaks.

  • Safety Devices: They check safety devices like pressure relief valves to ensure they function properly.

  • Boiler Casing: The boiler casing is removed to inspect internal components for wear and damage.

  • Flue TerminalsFlue terminals are examined to ensure they are free from obstructions and securely fitted.

  • Gas Pressure: They measure the gas pressure to confirm it is within the correct range.

  • Operational Test: Finally, an operational test is conducted to ensure the boiler runs smoothly and efficiently.

Common Boiler Faults and Repairs

Despite regular maintenance, boilers can develop faults which may need repair.

  • Leaks and Drips: One common issue is leaks, which often stem from faulty components like the boiler casing or internal pipes.

  • Faulty Thermostats: Another problem is faulty thermostats that cause temperature regulation issues.

  • Ignition Problems: Problems with ignition can result from built-up debris or malfunctioning parts.

  • Low Pressure: A boiler with low gas pressure may not function properly and could be a sign of a leak or a problem with the gas supply.

  • No Heat: When a boiler produces no heat, this can be due to issues with the pilot light, thermostat, or safety devices.

By addressing these common faults promptly, homeowners can ensure their boiler remains efficient and avoids more severe problems.

Preventive Measures and Troubleshooting

Regular maintenance and early detection can save time and money by avoiding common issues and spotting signs of trouble before they become serious.

Avoiding Common Issues and Breakdowns

Preventive maintenance is key to keeping a boiler running efficiently. Annual servicing by a qualified engineer is recommended to ensure the boiler is safe and functions properly. Regular checks can help spot potential issues early, such as:

  • Gas leaks: A professional can detect and repair gas leaks, keeping the home safe.

  • Leaking: Inspecting and fixing leaks can prevent water damage and corrosion.

  • Corrosion: Cleaning and maintenance can reduce the risk of rust and other corrosive damage.

  • Damage: Checking parts for wear and tear can prevent unexpected breakdowns.

Scheduled maintenance not only prevents inconvenience but also extends the boiler's lifespan.

Spotting Early Signs of Boiler Distress

Early signs of boiler trouble should never be ignored. Unusual noises like banging or whistling can indicate problems such as air in the system or low water pressure. Inconsistent heating or hot water could point to underlying issues like a defective thermostat.

It's important to have a carbon monoxide detector installed near the boiler to detect any dangerous leaks. A yellow flame instead of a blue one could indicate incomplete combustion.

Regularly checking the pressure gauge and ensuring the boiler’s water pressure is within the recommended range can prevent breakdowns. Spotting these early signs helps in taking corrective actions before they escalate into costly repairs.

Energy Efficiency and Environmental Impact

Maintaining an efficient boiler and having it serviced regularly can lead to lower energy bills and a reduced carbon footprint.

Optimising Your Heating System for Lower Energy Bills

An efficient boiler means using less energy to heat your home. Regular service checks help ensure that your boiler runs smoothly and at its highest efficiency. When a boiler is serviced annually, potential issues that cause inefficiency—such as a pressure drop or leaks—are detected early.

Regular checks ensure the boiler operates at optimal pressure, around 1.5 bar. A properly serviced boiler uses energy more efficiently, reducing household energy billsElectric boilers and gas boilers alike benefit from these regular checks, ensuring you get the maximum heat output for the minimum energy input.

The Ecological Advantages of Regular Boiler Servicing

Servicing your boiler isn't just about saving money; it's also about the environment. A boiler functioning at peak efficiency emits fewer pollutants. This reduces the household's carbon footprint. Additionally, a properly maintained boiler helps in cutting down on carbon monoxide emissions, which are harmful and dangerous.

Regular servicing by a Gas Safe registered engineer ensures that any leaks or faults are quickly repaired. This not only makes the boiler more efficient but also safer. Lower emissions from efficient boilers contribute to a healthier environment, helping to comply with eco-friendly standards and regulations.

iHeat Boiler Service

At iHeat all of our subcontracted engineers are Gas Safe registered and can service your boiler swiftly and safely. Prices of an expert boiler service with iHeat start from £99.These figures might fluctuate regionally and can also depend on the specific type of boiler you own, such as a combi, gas, or oil boiler. 

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iHeat New Boiler Cost

New boilers can be a daunting purchase for many people as they’re an appliance with a lot of responsibility, providing heat for you and your family is something you want to get right. Boilers aren’t exactly a quickly disposable item either, potentially lasting you a decade.

Effectively, new boiler cost can be split into two segments: the first is the actual boiler itself (unit price), and the second is the cost of the boiler being installed (set up) in your property by an expert engineer. 

Here at iHeat, we remove all of this undue stress and make the decision making process of upgrading to a new heating system, as easy as possible.

New boiler costs can vary depending on a number of factors including their brand, model, fuel, output, warranty, labour and boiler installation type. Typically a new boiler will cost between £1,845 and £3,500, below is a list of average boiler installations offered by iHeat (guide only).

Installation Type

Price (inc VAT)

Combi to combi swap

£1,845

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System to combi conversion

£2,499

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New boiler install

£2,899

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Back boiler to a combi

£3,299

Get a quote

System to system

£1,945

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Frequently Asked Questions

Does a boiler need servicing every year?

Yes, boilers should be serviced annually. This helps to ensure the boiler is running efficiently and safely. Regular servicing can catch problems early and prevent costly breakdowns.

Is it a legal requirement to have your boiler serviced?

For tenants, landlords must have a gas safety check done every 10-12 months by law, which might not include a full service. Private homeowners are not legally required to have their boilers serviced yearly, but it is highly recommended.

How much does it cost to get a boiler serviced?

The cost of a boiler service can vary, but it usually ranges between £60 and £100. Prices might differ based on location and the type of boiler. Some companies also offer service plans that include annual servicing.

What happens if you don't service your boiler?

Not servicing your boiler can lead to inefficiency, higher energy bills, and potential breakdowns. In some cases, it could also pose a safety risk, such as gas leaks or carbon monoxide poisoning.

Is it worth getting a boiler serviced?

Yes, regular servicing is worth it. It ensures the boiler runs efficiently, helps prevent breakdowns, and maintains the boiler’s warranty. It also gives you peace of mind that your boiler is operating safely.

How do I know if my boiler has been serviced?

The engineer should provide a service record or certificate after completing the service. Look for a sticker or tag on the boiler indicating the date of the last service. Keep these records for future reference.

Can I service my boiler myself?

No, servicing a boiler should always be done by a qualified heating engineer. Boilers are complex and potentially dangerous systems that require professional expertise to maintain and service safely.

Stephen Day profile photo
Article by
Stephen Day | Co-founder
Gas Safe registered and FGAS certified engineer with over 20 years experience in the heating and cooling industry.