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What to expect from a boiler installation

From preparation to fitting, here's everything you should expect when going through the boiler installation process.

Glow-worm boilers are available in combi, system, and regular models to offer efficient heating and hot water solutions. Our guide on the different types of boilers gives insight into what boiler is best for your home, considering:

  • The amount of water your home uses.
  • How much space your home has.
  • The amount of heat it requires.

Try our Find a boiler tool to see what system is perfect for your home.

Finding an installer

We have a network of dedicated Glow-worm installers available to ensure you get the right boiler for your home. We take pride in making sure you get the expert knowledge of your new heating system, along with the best service possible, from quote to installation, so we can maximise your homes performance.

Click here to Find an installer.

When's the best time to get a boiler installed?

While there is no specific right or wrong time to have a new boiler installed, getting it done within the summer months will be most beneficial due to them being the months that least require the use of your boiler. Also, getting your boiler installed in the summer will give you peace of mind that there is a brand-new, efficient boiler that will help keep your home warm ahead of the winter months. If you’re unsure which is the best boiler for you contact an installer via our ‘Find an installer’ tool who will be able to advise on the available options.

The installation process

The boiler installation process is broken down into 5 different stages focusing on the consultation, preparation, testing, and cleanup:

The consultation process involves an assessment carried out by one of our installers. Some of the factors that will be discussed include:

  • Home size/layout
  • Hot water usage
  • Energy efficiency goals

And any other personal preferences or requirements.

Then the installer will recommend the size and type of boiler needed in your home followed by estimated costs and a no-obligation quote.

If you’re happy with the quote from your installer, the preparation stage is simply getting the area cleared so it's safe and ready for the installation process. This involves removing any obstacles and making sure there is proper ventilation as well as appropriate space for maintenance and accessibility.

Other factors to consider in the preparation stage are waiting on permit approvals and the delivery of the equipment required.

Once the boiler is installed, the installer will run several tests to make sure that it has been installed correctly and will run at its most efficient. These tests include:

  • Pressure tests - The purpose of pressure tests is to check for any system leaks. Typically, your boiler pressure needs to be around 1.0 to 1.5 bars.
  • Flue gas analysis - This process involves sampling exhaust gases from the boiler to analyse oxygen, carbon dioxide, and carbon monoxide levels.
  • Functional testing - This includes the general testing of pumps, valves, thermostats, and safety controls to make sure there are no underlying issues with your system.
  • Calibration - When calibrating your system, the installer will set the settings to a level that maximises performance and efficiency.
  • Safety checks - Then one last safety check will be conducted to confirm that the functionality of the boiler is at its peak.

Finally, the clean-up stage is crucial so that your installer leaves the working space to a high standard through the removal of debris and the cleaning/restoration of any affected workspaces. Then the installer will do one final inspection to confirm the installation process is complete.

If your installer is a Club Energy installer, they can offer you an extended guarantee and will take care of everything for you. You can also register the boiler guarantee yourself within 30 days to have an extended guarantee.



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