Ryan Gill, Engineer
31 Jan : Updated 27 Nov ● 6 min read
Have you ever wondered what the lifespan of a gas boiler is? Whether your boiler’s performance is starting to deteriorate, or it’s simply on the older side, knowing your boiler life expectancy can help you decide whether or not you need a boiler replacement.
In this guide, we discuss why the age of your boiler is important for maintaining a healthy central heating system.
The average lifespan for a boiler ranges from 10 to 15 years.
As your boiler gets older, it may start running less efficiently, which is why annual boiler servicing carried out by a professional Gas Safe engineer is essential for keeping on top of any maintenance that may be required throughout its lifespan.
Your engineer can give you a more accurate timescale and fix any problems that might be occurring.
The lifespan of a boiler can vary depending on the type of boiler:
For combi boilers, the average lifespan tends to be up to 15 years.
There are a few things that can affect the performance of a boiler and if these things aren’t regularly checked, a bigger problem can develop. Things such as limescale or sludge build-up can cause corrosion and blockages in your system that may reduce your boilers life expectancy.
If you’ve managed to maintain your combi boiler for over 15 years, you may wish to consider buying a new boiler, since this may be more cost-effective than needing constant repairs.
A standard boiler also typically lasts around 15 years.
Unlike the combi boiler, standard boilers can have an external hot water cylinder and have additional external controls including pump and valves that engineers need to install and assess, meaning the price of maintenance and installation could be more costly.
With this in mind, you may wish to consider replacing your boiler and/or controls, instead of repairing, if it’s causing issues as it could cost you less in the long run.
System boilers, again, can last up to 15 years.
Much like standard boilers, system boilers usually have an external hot water cylinder and external valves (the pump is contained within the boiler). So again, it is worth considering the age and condition of the external controls if you are looking to replace the boiler.
If you've been noticing some odd behaviour coming from your boiler, age might be at play.
To find out how old your boiler is, there are a few different routes you can take:
It goes without saying that you want your boiler to last as long as possible. We’ve compiled a number of tips and tricks to help elongate the lifespan of your boiler.
The most common way to do this is by having annual service checks from a registered Gas Safe engineer. Your annual boiler service will help to flag any minor issues before they develop into something more serious.
Regular radiator bleeding can help to keep the circulation within your central heating system running smoothly. If your radiators are cold at the top but hot at the bottom it’s likely to have air in the radiator. Air or oxygen in the system can cause corrosion if left for a long time.Likewise, if you find yourself bleeding air out of a system regularly there could be underlying issues.
Inhibitors and filters help protect against corrosion build-up and ensure you have a cleaner system.
We recommend turning your boiler on , once a month, during the summer.
This is to ensure your system isn't overwhelmed by the time autumn and winter come around and may reduce the possibility of the valves/pump seizing.
You may wish to think about a boiler replacement if you’re experiencing more and more faults with your system as it gets older.
In time, it could end up being more cost effective (and efficient) to choose a new boiler rather than constantly forking out on boiler repairs.
Although age is a good indicator for changing boilers, there are other factors that can work alongside it that should make you consider a replacement.
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At BOXT, we understand the importance of maintaining a smooth running central heating system for your home. Ensure you have explored the option of boiler cover for additional peace of mind.