How Long Does a Boiler Last?

At Boiler Installation Nottingham we are the leading boiler installation company and we know that boilers are built to last. With proper care and regular servicing, the boiler should last anywhere between 10-15 years. If you’ve recently invested in a new boiler, it means it’s going to be a long while before you need to think about getting another boiler.

However, the longevity of your boiler extends beyond what is indicated on the warranty card. For your boiler to last that long, you need to take steps to give the boiler the best chance to make sure it can last as long as you want it to. With regular use and prompt servicing, you can get the boiler to go as far as 20 years.

Here are some of the things you can do to prolong the life of your boiler.

How to lengthen the life of the boiler

Annual servicing

When you buy a boiler, it’s recommended to have it serviced every year. Having the boiler professionally serviced every year guarantees the best possible chance that your boiler works trouble-free for a long time.

During service, the engineer checks the system for faults or leaks and will easily catch small problems before they become expensive to fix. A good professional service will not only lengthen the life of your boiler, but it’s one of the requirements to keep the boiler warranty active.

Go for qualified professionals

Whether you’re servicing or repairing the boiler, always make sure you go for registered engineers who are well trained and highly recommended. If you’re using an oil-fired boiler, only go for OFTEC registered engineers. If it’s a gas boiler, go for a Gas Safe registered boiler.

Using unqualified engineers could result in damage to your heating system and other disastrous consequences. To avoid unnecessary expenses, always make sure the boiler is handled by a trained expert who is registered with the relevant bodies.

Fix repairs in the shortest time possible

Boilers are like every other machine. They will fail once in a while. Having the problem fixed quickly will save you money and minimise damage to the boiler.

As soon as you notice or hear something unusual, have it investigated and resolved quickly. Don’t put anything off longer than necessary. A small problem like a leak can lead to expensive repairs if not addressed immediately.


Over the years, there will be deposits of sludge and rust inside the system. If the sludge is not removed, it can cause blockages, which in turn affect the efficiency of the system and strain parts like the pumps, the boiler, and even the pipework.

If the sludge and blockages are left for too long, they can cause the different components, including the boiler, to fail prematurely. A professional engineer will help you get rid of the build-up and clear the blockages by conducting a power flush or a chemical flush.

This helps to restore the efficiency of the system and restores circulation. You don’t need to have a power flush done too often. Just once every few years.

Don’t overwork the boiler

If the water pressure is set too high, it can cause increased wear and tear on the boiler. Also, using the boiler for prolonged periods will shorten the life expectancy of the boiler. However, If the boiler is of the right size and output, it should be able to meet your hot water demands easily.

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Should You Replace an Old Boiler If It’s still working?

It’s possible to have your boiler in good working condition long after the recommended period has elapsed. The decision to replace the boiler, however, is not solely dependent on if the boiler has become problematic or still working. There are other factors you have to consider that might push you to replace or keep the boiler.

Cheaper energy bills

As your boiler grows older, it becomes less efficient and your energy bills can go up. The boiler needs to work a little harder for longer and takes up more energy. By going for a modern boiler with higher efficiency, you can save money on your energy bills.

Latest technology

Boiler technology is always improving making boilers better and more efficient. Modern boilers are compact with attractive finishes that keep up with modern trends. Older boilers might not look or perform as well.

Currently, you can even buy thermostats that are connected to the internet allowing you to control your boiler wherever you are in the world. There’s a lot that boilers can do today that they couldn’t have done a few years back. Getting your hands on this new technology calls for a replacement of the old boiler.

Changes to your home

You might also consider replacing your boiler because of the changes to your home. Maybe you’ve added a few bedrooms and bathrooms or a few children and your demand for hot water is not the same.

To get the right size of boiler for your home, you should consider a replacement that will take the changes into consideration and keep your home comfortable with ample supply of hot water without overworking the boiler.

Discontinued parts

With old boilers, finding replacement parts can be an uphill task. Most of the parts might have been discontinued since the boiler is no longer in production which makes repairs expensive and tedious. Going for a new, modern boiler with ready parts will ease the cost of repairs and the time taken to get the parts.

Boilers can last for over a decade. But, the longevity of your boiler depends on how well you take care of the boiler and make sure it’s in pristine condition. If you’re not careful, your boiler might break down and fail prematurely and your warranty might not cover the repairs.

If your boiler is well past its best before date, choosing whether or not to replace it requires careful consideration, especially if it still works properly. However, there are more benefits to replacing the boiler than keeping the old one in action.

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