If you have an older home with a back boiler, you may be wondering how long it would take to convert it to a more modern and energy-efficient heating system. Converting a back boiler often involves installing a replacement boiler, which is an important step in upgrading your central heating system. But how long does the process take, and what’s involved? In this blog, we’ll cover the typical time frame for a back boiler conversion, the key stages of the process, and factors that may affect how long the job takes.

What is a Back Boiler?

Before we dive into the time frame, it’s helpful to understand what a back boiler is. Back boilers were traditionally installed behind a fireplace or gas fire and provided hot water and central heating to the home. While they were popular in the mid-20th century, back boilers are now considered outdated due to their inefficiency compared to modern condensing boilers like combi boilers or system boilers.

Upgrading to a new boiler can significantly improve your home’s energy efficiency, lower your heating bills, and provide more reliable hot water. This is why many homeowners are opting for a back boiler conversion.

How Long Does a Back Boiler Conversion Take?

In general, converting a back boiler to a modern heating system takes between 2 to 4 days, depending on the complexity of the job. Here’s a breakdown of the main stages involved:

1. Removal of the Back Boiler (1-2 Days)

The first step in the process is removing the existing back boiler. This can take up to 1 to 2 days, as it involves dismantling the back boiler from its location behind the fireplace or gas fire. The heating engineer will also need to cap off the old pipework and ensure the chimney or flue is made safe.

Since back boilers are often hidden behind walls or fireplaces, their removal can be a bit more complicated than simply taking out a regular boiler. The engineer will carefully assess the best way to remove it while minimising any disruption to your home.

2. Installing the Replacement Boiler (1-2 Days)

Once the back boiler has been safely removed, the next step is installing your replacement boiler. The time frame for this installation depends on the type of boiler you’re upgrading to and its location.

• Combi Boiler Installation: If you’re switching to a combi boiler, the installation could take 1 to 2 days. Combi boilers are often the preferred choice due to their efficiency and space-saving design, as they don’t require a separate water cylinder.
• System or Conventional Boiler Installation: If you opt for a system or conventional boiler, installation might take a bit longer due to the need for a hot water cylinder and additional pipework. This could add an extra half a day to the installation time.

The engineer will also ensure that the new boiler is properly connected to your existing radiators, pipework, and controls, making sure everything works as it should.

3. Testing and Commissioning (Same Day)

Once the replacement boiler is installed, the final step is to test and commission the system. This typically takes place on the same day as the installation and involves the engineer checking that the boiler is functioning correctly, all the radiators are heating up evenly, and the controls are set up according to your preferences.

Your heating engineer will also explain how to use your new boiler and answer any questions you might have.

Factors That Can Affect the Time Frame

While a back boiler conversion usually takes between 2 to 4 days, several factors can affect the exact time frame, including:

• The Complexity of the Pipework: Older homes with back boilers may have outdated pipework that needs to be upgraded or re-routed. This could add an extra day or more to the process.
• The Location of the New Boiler: If you’re moving the boiler to a new location in your home (such as moving it from the living room to the kitchen), this could increase the installation time as it involves more extensive pipework.
• Additional Work Required: If the flue needs to be relocated, or if you’re installing new radiators or a thermostat alongside the boiler, this could add extra time to the job.

At NJ Lees, we always aim to complete back boiler conversions as efficiently as possible, while ensuring the highest standards of workmanship. Our heating engineers are experienced in back boiler conversions and will keep you informed throughout the process.

Why Convert Your Back Boiler?

Aside from the time frame, you might be wondering why you should consider converting your back boiler in the first place. Here are a few key reasons:

• Improved Energy Efficiency: Modern replacement boilers are far more energy-efficient than back boilers. A new boiler could help you save money on your energy bills and reduce your carbon footprint.
• More Space: Back boilers are bulky and take up space behind your fireplace. Converting to a combi boiler, for example, frees up space in your living area and can even improve the aesthetic of your home.
• Reliability: Back boilers are old technology and can be prone to breakdowns. A modern boiler will provide more reliable heating and hot water.

Contact NJ Lees for Your Back Boiler Conversion

If you’re considering a back boiler conversion, NJ Lees is here to help. Our team of qualified heating engineers can handle the entire process from start to finish, ensuring a smooth and hassle-free experience. We specialise in installing replacement boilers that are energy-efficient and perfectly suited to your home’s heating needs.

To find out more or to schedule a consultation, contact NJ Lees today. We’re ready to help you upgrade your heating system and enjoy the benefits of a modern boiler.