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Everything You Need To Know About Boiler Replacements

Keeping a healthy boiler is essential, especially with the cold seasons approaching! Our guide has perfectly outlined the signs you need to look out for in case you need a boiler replacement! We’ve also outlined all the key steps involved in the boiler replacement process so you know exactly what to expect! To find out more, keep on reading!

How Do I Know If I Need A Boiler Replacement? Things To Look Out For

If you’re not sure whether your boiler is in need of a replacement, there are some key things that you can look out for. These are a few pretty tell-tale signs that something is wrong with your boiler, but if you’re still feeling unsure, you can always contact a professional team to come and take a look at your boiler.


If your radiators are taking longer than usual to heat up, or a noticeably long time, this could be a strong indicator that there’s a problem somewhere. Your heating should typically reach the desired temperature relatively quickly and if it’s taking longer than usual you will be able to judge whether there is a problem.

It could be a problem like a blockage, frozen pipe or a cold spot, so calling out a professional to come and take a look at your boiler is the best course of action.

Strange Smells

If your boiler is healthy and functioning properly, it should not give off a bad smell, so if your boiler is giving off a strange smell then this is a strong indicator that something is up and it should be tended to immediately.

A faint smell can often mean there is a carbon monoxide leak or that there is a burnt component somewhere. In either case, calling a professional should be the first thing you do.

Frequent Breakdowns

If your boiler is breaking down a lot, failing to heat your home or just not working, this is a pretty obvious sign that something is wrong. It could be a result of low pressure, faulty components or other issues. It’s best that a professional takes a look at your boiler to identify what the problem is and recommend a replacement or a repair.

Increased Bills

While the energy crisis has meant a spike in energy bills, another sign to look out for is a drastic increase in your bills. If you notice an extortionate energy bill, it could be a sign that your boiler is inefficient and not operating well. This could be due to a problem or simply due to old age, and will usually mean a boiler replacement is needed.

Strange Noises

Your boiler might make a noise when it’s turned on, however if you notice strange noises like clunking or banging, this is not a good sign. Whirring sounds or other noises that seem odd could suggest an internal issue with your boiler. In some cases they may be serious but they could also just be the result of general wear and tear.


The average life-span of a boiler is about 10-15 years, however you may be in need of a replacement sooner if your boiler is showing signs that there is an issue. It may also be more cost effective to replace your boiler with a more efficient model that can save you money on your bills in the long run.

Repair Vs. Replacement

If you suspect that there is a problem with your boiler and you have it looked at by a professional, you may have to make a choice between repairing your current boiler or having a replacement fitted. Repairs can end up being frequent and costly, in which case a new boiler can be the solution. These are some key things to consider when choosing between a repair and a replacement. 


Simple repairs can often fix problems with your boiler, and a repair may be the best option if:

  • You have infrequent breakdowns
  • Your boiler is relatively new
  • Minor repairs seem to fix the issue


A replacement boiler may be necessary if:

  • Repairs end up being too costly, a replacement may be the best option
  • Your boiler is older
  • Replacement parts may be hard to come by and a new boiler may be the best option

If you’re unsure of whether a repair or replacement is best for your situation, seeking professional advice is the best thing to do. A heating engineer can give you their advice and help you make the most cost-effective decision going forward.

The Boiler Replacement Process: What To Expect

We’ve outlined all the steps involved in a boiler replacement so that you know exactly what to expect! Keep reading for more.

Your Old Boiler Is Removed

The first thing your heating engineer will do is come and remove the old boiler. This could take a short while or a little bit longer, it simply depends on the complexity of the job at hand and how your existing boiler system is fitted.


Typically, your heating engineer will flush your system or clean it. The method and type of clean can vary depending on the condition of your heating system. You may have a simple chemical flush or a stronger power flush may be needed.

The purpose of a flushing or cleaning is to keep your system as clean as possible to avoid any blockages from debris. This is what can lead to clogs and other problems within your system.

Pipework Upgrades

When your new boiler is installed, your heating engineer may have to rearrange your existing pipework or fit upgrades to match your new boiler. This may be a time consuming task, depending on the existing pipework and how much work needs to be done.

New Boiler Fitted

Your installer will either put your new boiler in place of the old one, or move it to a new location. You can decide to change the location of your boiler to somewhere more convenient, but this will add extra costs and could take a good chunk of time.

Accessories & Additional Components

There may be additional components and accessories for your new boiler which your installer will fit. These accessories are designed to protect your boiler from debris and sludge that can occur over time. Filters and other accessories will be fitted to protect your new boiler and keep it healthy for as long as possible.


After all your accessories and additional parts have been fitted, your installer will hand it over to you right after a quick check that everything is running smoothly. They will explain all the necessary information and show you how to use the controls…etc.

How Much Will A Boiler Replacement Cost?

You may be wondering how much a boiler replacement will cost, however the answer will vary based on a range of different factors. Boiler installations are not always cheap, so be prepared for this.

Depending on the complexity of the installation and whether you are moving the boiler or the existing pipework is quite challenging, your boiler replacement could be made more expensive. Additional parts and accessories may also be quite costly, so be cautious of this too.

A good way to gauge the cost of your boiler replacement is to ask for a quote beforehand. Many companies will give out a free quote before the installation to help avoid any hidden costs or surprises!

Finding A Reliable Boiler Installation Service

Here at Mitchells, we take care of a range of heating and boiler problems. So, if you suspect that your boiler may be in need of a replacement soon or you think something might not be quite right with your heating system, contact us today!

We deal with commercial boilers, heating systems, air conditioning and much more. To read more about our services you can head to our website, give us a call on 01452 302206 to speak to our team directly or request a callback.

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