A Step by Step Guide to Boiler Installation

Your boiler is responsible for making your home warm and cosy, as well as fulfilling your hot water needs. Therefore, it is essential your system is installed correctly and has been suited to the heating demands of your home.  This will help prevent future breakdowns and costly repairs. Here at MPH Plumbing and Heating, our engineers are all Gas Safe registered and trained to the highest standards. We pride ourselves on their high levels of expertise and outstanding reviews.

When you have found the right engineer to install your new boiler, the next step is to get a quote. This will enable you to work out how you will finance your new boiler. Your engineer should also explain the best type of and size of system for your and your family’s need, as well as potential running and installation costs. For help with your boiler installation, contact MPH Plumbing and Heating today. We also have a guide to help you with sizing your new central heating system

What Happens During a Boiler Installation?

Removal of old boiler

Firstly, your engineer will remove your old boiler system. The length of time this will take depends on the system your engineer is removing and the complexity of the job. Older systems may take longer or be more complicated to remove than newer systems.


Once your old boiler has been removed, the system will need to be flushed and cleaned. When having a new boiler installed, it is important to ensure that the water in the system is as clean as possible. A flush prior to installation will help prevent any damage from being caused by debris from your old system.

Upgrades to your pipework

Your pipes may need to be replaced or updated to ensure the efficiency of your new system. This isn’t always a simple job and can take up a large amount of your engineer’s time. Your engineer should be able to tell you during your quote whether or not your system requires repiping.

Fitting your boiler

Once all the preparations have been completed, it’s time for your Gas Safe Registered engineer to install your new boiler. You can change the location of your boiler if you wish, but this may add extra time to the process. It’s always best to ask for and listen to an engineer’s advice on where would be the best location for your system within your home.

Filter Installation

It is usually recommended to install a filter system alongside your boiler. This will collect any debris or sludge that builds up over time and protect your boiler. This will ensure your system remains clean and runs efficiently, reducing any emergency plumbing costs

Boiler Commissioning

Once everything has been installed to standard, your engineer will need to commission your boiler. This will ensure everything is installed and running correctly.


Once all the above steps have been completed and your boiler is running efficiently, your engineer should then complete a handover with you. This includes explaining to you how your system works and any warranties it comes with. The regular maintenance checks you’ll need to complete during the boilers’ lifespan should also be explained to you.


Once the installation is complete, either the homeowner or the engineer will need to register the boiler. This will ensure your warranty is valid, making sure you are covered if you were to experience any issues.

Ensuring your boiler has been installed correctly and efficiently is essential for preventing any unnecessary repairs or system breakdowns. If you require a Gas Safe Engineer in the Newport, Barry, Bristol, or surrounding Cardiff areas, contact us.

A Step by Step Guide to Boiler Installation