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How Long Does It Take to Install a Boiler?

Having a boiler at home is necessary for heating your house and providing hot water in your pipelines. With the variety of boilers, you can choose the ideal one for your house. 

However, whether you choose a gas boiler, electric boiler, or combi boiler, installing it requires professional help. In most cases, this process takes a single day, but some external factors may affect the installation time. 

If you want to estimate how much time your boiler installation will take, you are at the right place. Here is everything you need to know about the steps to install a boiler and how much time it requires.

How Long Does It Take to Install a Boiler

Installing a boiler is no easy task. It requires professional skills which only a trained technician can perform. These are the steps to install a new boiler at your home. 

Choosing the Boiler 

Firstly, you need to choose the boiler from a trusted retailer. Different kinds of boilers serve different purposes. If you only check with one or two retailers, this process might take 15 to 30 minutes. 

New boiler costs also play a major role in the selection process. Select a model that suits your requirements and is within your budget. You can also reduce selection time by researching the desired model online. 

Transporting it to Your House

This step might take a little longer if you live far away from the retailer’s store. Most retailers have warehouses in different parts of the city to transport the system to specific regions without delay. Transporting a boiler to your house might take a few minutes to a few hours. 

The transportation process also requires extra money for the fuel and truck the company hires. Therefore, buying the boiler from the nearest retailer can save you time and money. 

Checking the Pipelines 

Once the boiler reaches your house, you can ask a technician to install it professionally. The technician will check all your pipelines to see whether they are compatible with the selected boiler. 

This process usually takes an hour. However, if the pipelines need to be changed, removing the old pipes and installing new ones takes a day. 

Boiler Installation 

Next is the installation, which might require a team of professionals. These boilers are quite heavy and huge. When you hire a professional, they come with the appropriate tools to fix the boiler. 

Do not try installing it on your own. The new boiler installation process takes one or two days, depending on the type of boiler. 

Commissioning the Boiler 

When the boiler is installed, the technician runs a short test on the boiler’s performance. It usually takes 30 to 40 minutes to run a test but can also go up to an hour. This step is important to ensure the boiler is installed correctly. 

No Access to Heating and Hot Water During Installation 

One thing you need to be aware of is you will not have access to heating and hot water for at least two days while your boiler is being installed. Preventive measures like portable water heater and room heating device to keep yourself warm during the process. 

The heating and hot water disruption are due to the removal of the old boiler, pipeline renewal, and installation of a new system that has not yet received water. However, with adequate backup, you can easily survive these two days without a hassle. 

How Long Does It Take to Replace a Boiler

Replacing a boiler depends on its type. In general, the replacement process can take around one to two days. For example, Back boiler to system boiler and Back boiler to combi boiler replacement takes two days. 

If you want to make a straight swap, then it can be the quickest option. Swapping usually takes only a few hours because of the pipelines and other accessories already fixed in place. Only the boiler needs to be swapped with the same kind of system. 

How Long Does It Take to Change the Place of The Boiler 

Relocating a boiler is one of the trickiest and most time-taking processes. In addition, this process is usually not even possible to execute. Relocating a boiler means setting up a new pipeline network which can take two to three days. 

Once the pipelines are in place, the installation process can take one or two more days. It makes the process four to five days long in total. Relocation is also quite expensive than a new boiler cost and might require invasive techniques to space for boiler accessories and pipes. 

Factors That Can Delay Your Installation Process 

While the installation process takes a day or two, some external factors can slow down the process. Some of the few factors that delay the installation process of your boiler include: 

  1. Unavailability of the boiler model you require. 
  2. The distance between the retailer and your house. 
  3. Type of installation you require; swap, relocation, new boiler installation. 
  4. The pipelines do not meet gas safe regulations. 
  5. The network of pipes is not suited for the new type of boiler. 
  6. The buildup of limescale, sludge, and rust in the pipes. 
  7. Unskilled technicians that are not associated with a trusted company. 


Installing a boiler can take one to two days if there are no delaying factors. Some boilers also take three days to install if there are any pipeline changes or relocations required. 

Furthermore, the distance from which the boiler travels to your home also plays a major part in the time calculations. 

Having a boiler is a necessity, especially in colder regions. With a few tips and tricks, you can speed up the process and save time on your boiler installation.

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