🕑 6 minutes read

Boilers play a crucial role in our homes, ensuring a steady supply of heat and hot water throughout the year. However, like any other appliance, they require regular maintenance in order to function properly. Ignoring signs that your boiler needs servicing can lead to costly repairs or even breakdowns when you least expect it.

To avoid these inconveniences, here are signs that your boiler needs servicing.

Signs Your Boiler Needs Servicing

Unusual Noises Image-of-a-boiler

If your boiler starts making unusual noises, it's a clear sign that something is wrong. Banging, gurgling, or whistling sounds could mean there is a buildup of debris or air in the system, which can reduce the efficiency of your boiler.

We've explained some of the boiler sounds for your general understanding.

  • Banging: This noise in your boiler may indicate a faulty thermostat due to limescale or a pump issue.
  • Kettling or whistling: These sounds are often caused by limescale buildup or corrosion debris in hard water areas, leading to restricted water flow and overheating. Addressing these issues promptly is crucial.
  • Loud Vibrating or Humming: Vibrating sounds may indicate a malfunctioning pump or incorrect settings. High pump settings or sludge buildup can lead to loud vibrations and overheating.
  • Gurgling: Trapped air mixing with water can cause gurgling noises. Thawing the condensation pipe or bleeding radiators might fix the issue.
  • Bubbling: Reasons for bubbling noises include incorrect installation or low water pressure. Repressurising the boiler may solve the problem, depending on the boiler type.
“If your boiler is making strange noises like rattling, humming, or banging, it's crucial to understand these sounds to identify potential issues.”

Different noises may indicate specific problems like kettling, dripping, tapping, or mysterious sounds. If your boiler produces any of these sounds, it's likely time for a service.

If you ignore these noises, they can lead to more serious heating issues and even cause damage to your boiler in the long run. It’s essential to service a boiler on time.

Uneven Heating A homeowner is adjusting the control panel of a heating boiler

One of the key indicators that your boiler needs attention is inconsistent heating throughout your home. If you observe that certain rooms are colder than others, it may signal problems with your boiler's heat distribution. This could be caused by airlocks, sludge buildup, or faulty components within the system.

Our expert boiler service can detect and resolve these issues, guaranteeing consistent warmth in every corner of your home. Make sure to invest in a professional service today for a comfortable and cosy living environment.

Increased Energy Bills Overhead view of gas/energy bill

If you notice a sudden increase in your energy bills without an obvious reason, it could be a sign that your boiler needs servicing.

As boilers get older, their efficiency decreases, leading to a higher energy demand for proper functioning.

By servicing your boiler, a professional can identify and fix any issues causing it to use more energy than necessary.

Pilot Light Changes Colour

The pilot light on your boiler should always burn blue, indicating that the gas is burning correctly. If you observe a flame has turned yellow or orange, it could mean that there is a problem with the gas supply or combustion in your boiler. This poses a potential safety hazard and should not be ignored.

No Heating

If you find that some areas of your home are warm while others remain cold, it could be a sign that your boiler needs servicing. This could be due to a debris buildup or an issue with hot water circulation.

Regular servicing can play a crucial role in preventing these issues and ensuring your entire home is evenly heated.

Strange Smells

If you detect a strange smell, such as a metallic or sulphur-like odour, coming from your boiler, it could be a sign of a gas leak. This is a serious issue that should be addressed immediately by a professional.

Gas leaks can be dangerous, and it's crucial to have your boiler serviced regularly to prevent such occurrences.

Leaks and Water Stains

Never overlook visible leaks or water stains around your boiler. Leaks can result in pressure loss, decreased efficiency, and potential water damage to your property.

A skilled technician can pinpoint the leak's source, fix it, and prevent additional damage to your boiler and its surroundings.

A Vaillant boiler leak
Age of Your Boiler Unit

Your boiler, like any appliance, ages over time. As it gets older, the boiler's efficiency can decline, and it becomes more prone to wear and tear.

If your boiler is reaching or has surpassed its typical lifespan, it's a clear sign that it needs servicing.

As boilers age, they may struggle to perform at their best, leading to issues like reduced heating efficiency and increased energy consumption.

Regular servicing becomes crucial to address potential problems and ensure that your boiler operates at its best, maximising performance and extending its overall lifespan. If your boiler shows signs of ageing, scheduling a professional service can help maintain its efficiency and prevent unexpected breakdowns.

If you need a new boiler or it's time for a replacement, you can rely on Serviceteam's skilled boiler professionals for expert boiler installation. Our heating engineers are experienced with all boiler makes and models, including Worcester Bosch, Baxi, Vaillant ad etc.

Poor Air Circulation

If you notice that certain areas in your home are not receiving adequate warmth from your heating system, it may be a sign of poor air circulation in your boiler. When air circulation is compromised, some rooms may feel colder than others, creating discomfort in your living space.

To address this issue and ensure consistent warmth throughout your home, it's essential to schedule a professional boiler service. A qualified technician can identify and rectify air circulation problems, optimising your heating system's performance.

Don't ignore the signs – prioritise regular boiler servicing to maintain a comfortable and evenly heated home.

Gas Leakage

If you notice a gas smell around your boiler, it's a clear sign that your system needs immediate attention. Gas leaks pose a critical safety risk, and quick action is essential.

Our team of professional gas-safe engineers will swiftly identify and fix the gas leak source, ensuring the heating system's safety and efficiency. Don't ignore the gas smell – prioritise your safety and schedule a thorough boiler service today.

Annual boiler service and regular servicing of your boiler are essential for both its longevity and your safety.

Don't ignore these warning signals, and make sure to schedule a service as soon as you notice any signs that your boiler needs attention. A well-maintained boiler not only runs efficiently but also gives you peace of mind, knowing that your home and family are safe.

"An ounce of prevention is worth a pound of cure."

Don't ignore the above signs, and keep your boiler in top shape for a happy and comfortable home.

Call a Serviceteam Professional


Contact a serviceteam professional today to schedule your next boiler servicing. We offer prompt, reliable, and cost-effective boiler services tailored to all boiler types and brands. Our extensive range of services encompasses installation, replacement, and maintenance. With our round-the-clock emergency service, your convenience and peace of mind take precedence.

Remember, prevention is always better than cure. Your wallet and family will thank you for it. Stay safe and warm!

Do not hesitate to contact us today to schedule your boiler service.