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Last updated: 24 March 2022

Do It Yourself Boiler Installation

10 Steps to Become a Boiler Pro

Gas boilers are quite dangerous to handle, therefore the UK has been promoting for some years now the use of a register where all the gas engineers should be enrolled. This institution is called Gas Safe Register and it is compulsory to ask the help of a certified engineer if you want to apply for the Boiler Replacement Allowance.

However, gas boilers are definitely not the only type of boilers available on the market nowadays. Indeed, electric boilers do not require the assistance of a gas safe engineer. Thus, you can decide on a boiler yourself, nevertheless a knowledge in plumbing is more than recommended to perform this installation.

Here are some guidelines of what need to be done in order to get a successful boiler installation:

1. Verify your local building codes

This part is really important, if you fail to follow those codes you’re risking to tear out all the installed system and start again from scratch. To be sure you are complying with the last building regulation set by the government, you can follow this link.  .

2. Choose the type of boiler that best fits your house

According to your house size and energy demands, not all the boilers will be adequate to deliver an efficient amount of heat. That is why you need to carefully select the type of boiler that you think will be the most suitable regarding your house characteristics.
The most famous ones on the market at the moment are combi boilers and biomass boilers. The type of boiler mainly depends on what kind of fuel you want to use to heat your property.

3. Select a particular supplier

In the UK, you can have access to a wide range of boiler suppliers that are ranked as the best ones in Europe. Therefore we decided at GreenMatch to specify the main characteristics of those companies and the products they are providing. Our goal is to show you their reliability and effectiveness. To be able to review those brands, please follow the boiler brands link.

4. Fix a budget for the installation

After deciding on the type of boiler and the company that will provide you the boiler, you have to fix a budget that encompasses the installation cost and the price of the boiler. Thus, you need to conduct an inventory of all the materials required to perform the installation the best way possible.

5. Decide where you will locate you boiler

For this step, you need to find the place where water pipes, electrical outlet, flue for venting purposes and gas lines are easily reachable. The ground also needs to be levelled so be sure to check it before installing the boiler. Then, you can start unpacking the boiler and preparing it for the installation

6. Dress the boiler

This step implies that you have to add-on the pipes to the boiler. By using the wrench, attach the circulator pump to the boiler and then add the riser nipple. The main purpose of this action is to connect the different pipes of your house to the boiler. If you house has several pipes zones - the number of zones depending on the size of your home - attach the adequate number of riser nipples to the pipes from the different zones, still using the wrench to perform this action.

7. Attach the feed and return pipes to the boiler

You need to ensure that the circulator pumps are located on the boiler return side and the flow-check on the feed side. To attach them, you have to tighten the nuts with the wrench. When this is done, you also need to link the boiler to the hot water tank by using a copper pipe. If the pipe has to bent, you can use a pipe bending tool.

8. Install the flue

Then, you need to use a sheet metal pipe of the appropriate size to connect the boiler to the smoke pipe. Add elbows if necessary to make the connection and drill holes to attach the boiler and the smoke pipe with sheet metal screws to allow a safer fit. This step will allow the boiler to be vented.

9. Attach the combustion fuel pipe to the boiler

This step needs to be done according to what is said inside the boiler installation manual. Be sure to pick the appropriate combustion pipe according to the type of boiler you chose to install.

10. Start the boiler

To now check if the installation is successful and your boiler is operating normally, open the water line to allow the boiler to fill, thanks to the automatic feed valve that will set the correct pressure during the filling of the boiler.

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To be sure to make the right choice when choosing the boiler type and the boiler supplier, you can fill out the quote on the top of this page with details concerning your property. We will then come back to you in short delay to provide you with up to 4 different suppliers that are located close to your place. You are then free to pick the one you prefer. Of course the service we provide you is free of charge and with no obligation so do not hesitate longer and try it out!

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