How Long Does It Take To Install A New Boiler?


How Long Does It Take To Install A New Boiler

Getting Started With Your Boiler Installation Process

You and your family rely on your boiler for making your home warm and cosy, as well as fulfilling your hot water needs. So, when your system needs replacing, you may worry about how long you will be without these necessities. Here at Plumr, we pride ourselves on installing boiler systems efficiently and effectively.

Finding a high-quality Gas Safe Registered engineer to carry out your installation is very important. Installations done incorrectly can cause further issues for your system down the line, which lead to emergency plumbing costs. At Plumr, all of our engineers are Gas Safe Registered and have years of experience in installation various boiler models. If you require boiler installation services in Wallington, Sutton, Epsom, or any surrounding South London areas, contact us today.

Getting A Boiler Installation Quote

Once you have found an engineer to install your new boiler, the next step is to get a quote. This will enable you to work out how much money you’ll have to pay for your new boiler. The engineer will also be able to explain potential running costs to you, once the type of boiler system you need has been decided. It is important to get the right system installed for your requirements, to help cut monthly energy costs and meet your home heating and hot water requirements.

How does Long Will A Boiler Installation Take?

Once you have a quote, your heating engineer can advise you on the time scale of your work. Several factors can affect the length of time your boiler installation. For example:

  • whether you already have a boiler
  • what fuel you are using
  • if you are relocating your boiler
  • what type of boiler you are having installed
  • whether you are changing the type of boiler, and what type you are changing to and from
  • any complexities due to the type of home, existing water supply, etc

A simple boiler swap should take roughly 4-6 hours as this is the most simple form of a new boiler installation. However, if you are changing the type of boiler you have or the location of your boiler, this can change the job length to anything from 1-4 days. To get a rough estimate of how long your installation will take, it’s best to contact an engineer for a quote.

It’s also helpful to know exactly what takes place during the boiler installation process. Our quick guide to boiler installations will run through what takes place, all step-by-step.

Boiler Installation Process

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.


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 before 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 if this action is necessary.

Fitting Your Boiler

Once all the preparations have been completed, it’s time for your 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.


Once everything has been installed to standard, your engineer will need to commission your boiler. This will ensure everything is installed and running correctly. The boiler commissioning procedure involves checking that your new boiler installation is installed and set up correctly. This helps ensure you are gaining maximum efficiency from your heating and hot water products. This can help to put steps in place to avoid common boiler issues.


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. 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 is installed correctly is essential in preventing any unnecessary breakdowns that require an emergency plumber or repairs. You can contact us to book your boiler installation/get a quote or answer any relevant questions you may have.


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