Boiler Maintenance Tips


New boilers do not come cheap and therefore keeping your boiler and the heating system in good working order will help the lifespan of the boiler itself.

Furthermore, the costs of both the heating fuel and the costs involved with maintaining a heating system itself have been increasing over recent years, therefore keeping the boiler maintained will ensure the best efficiency possible as well as ensuring the safety the boiler for continued use.

We will be discussing boiler maintenance tips that can save a homeowner money as well as aiming to keep the boiler running smoothly for as long as possible.

Tip 1 – The Annual Boiler Service

It is important to arrange for the annual boiler service to be undertaken so that the Gas Safe Heating engineer can ensure that the boiler’s internal parts are in a good working order as well as ensuring the safety of the boiler itself.

Professionals can detect issues ahead of a boiler breakdown, ensuring that they are addressed in a cost effective and safe manner without the nuisance of a breakdown.

It is advisable to time the annual boiler service for the summer months as there is less demand to be able to book a Gas Safe registered heating engineer in a timely manner and address any issues found from the service before the winter returns.

Annual services are also essential during the boiler’s warranty period to keep the warranty valid, as well as being a legal requirement for rented properties.

However, if any issues are detected and a service is not due, do not delay and call a Gas Safe registered heating engineer to investigate further.

Tip 2 – Maintaining Suitable Boiler Pressure

Homeowners should keep an eye on the pressure within their boiler as if the pressure is out of the ideal range, there can be damage to the internal parts.

In order to find out more about the ideal pressure range for your boiler and the process to be undertaken should you find your boiler is not pressurised appropriately, please refer to the boiler’s manufacturer’s manual.

Tip 3 – Bleed the Radiators

Should it be noticed that the property’s radiators are not heating up evenly, for example they are cold at the top, there is likely to be air trapped inside reducing the efficiency.

In order to clear the blockage, prepare the area underneath the boiler with plastic sheets or old towels and use a radiator key in an anti-clockwise director to open the bleed valve.

Any trapped air will be released, and you are likely to hear a hissing sound and water may drip out. When the hissing stops close the valve back up.

Once the above process has been completed on all affected radiators, return to the boiler and check the pressure is within the ideal pressurisation range. Again, if this needs adjusting, please refer to the boiler’s manufacture’s manual.

Tip 4 – Prepare for Winter

During the summer month’s take some time to inspect the heating system both inside and out for any signs or leaks or damage to lagging.

If the pipework is either not lagged already or the lagging in place is damaged, arrange to install new lagging.

Lagging prevents pipework from freezing in the winter months by insulating the pipes and can be easily installed by purchasing the ready to use pipework insulation from hardware stores and following online videos of how to install.

If there are any signs of a leak detected when undertaking visual inspections of the heating system, wrap the pipe in rags and call a Gas Safe registered heating engineer for assistance.

If the visual signs of a leak are not spotted, however the boiler has a high pressure reading, this may indicate a leak out of view which will need the attention of an expert.

Tip 5 – Consider Boiler Insurance

Boiler insurance is a type of policy that is available in differing levels of cover, from protecting against emergency call out changes only to full protection covering the costs of annual maintenance as well as emergency call out changes, parts and labour.

There are various boiler insurance providers on the market, which aim to help protect homeowners and landlords from the unknown costs of call outs and boiler maintenance each year, however it is worth taking time to calculate the risk of such occurrences versus the cost of the policy. Once factor that may help aid the decision regarding the need for boiler insurance may be when the boiler warranty expires.

Tip 6 – Consider When Maintenance and Repairs are too Expensive and a New Boiler is Needed

Unfortunately, boilers, like any device are not built to last forever, no matter how well they have been maintained as over time, parts start to corrode and faults reoccur.

There is a tipping point when the maintenance and repair costs begin to build up and therefore it would be more economical to replace the boiler itself for a modern and more energy-efficient model.

Therefore always discuss the overall condition of the boiler with a Gas Safe registered heating engineer during a service or emergency call out to analyse whether it is time for a new boiler.


If you are responsible for the maintenance of a boiler, we hope that you have found this article helpful, discussing a number of tips that can help reduce the costs of boiler maintenance as well as the occurrence of any unwelcome breakdowns.

We have covered some basic DIY tips that a homeowner or landlord can undertake themselves in order to keep their boiler running smoothly, as well as discussing the option of boiler insurance that, at the higher-level policy can cover the costs of servicing, break down call outs, parts and labour costs.

We have also discussed the importance of being aware when it is time to replace a boiler for a modern, energy efficient model.

If you have any specific queries regarding your boiler, please contact a Gas Safe registered heating engineer to investigate further.