How long does it take to replace a boiler?

Do you need a replacement boiler? If you’re replacing like for like, the process can be a straightforward one taking anywhere from a day to a week. However, the answer really depends on your circumstances and the type of installation you require.

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Are you changing your boiler?

If your boiler has bitten the dust, you may be considering a system upgrade. If you decide to change from a regular boiler to a combi boiler, then you can expect the installation to take much longer than for a straightforward replacement.

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Cylinder removal, pipework modifications and changing the boiler controls can all mean your boiler replacement will take longer than a straight swap. A system upgrade can add as long as 3-5 days to your boiler replacement

Does your boiler need relocating?

Boiler replacement is often a good opportunity to relocate a noisy boiler or to improve the aesthetics of your kitchen. If you’ve decided to move your boiler from your kitchen to your loft, for example, there will be an impact on the length of time it takes to install the boiler in its new location. Floorboards may need to be lifted and pipework relocated or even capped off and replaced. This can add at least 1-2 days to the installation, or longer depending on the final location of your boiler. As a general rule of thumb, the further the distance to the new installation, the more expensive and time-consuming.

Access the flue

If you’ve booked a boiler installation Gloucester has fully-qualified companies like Your heating engineer may need to access the flue and if it’s in an awkward place, they may need to arrange for scaffolding which can add time to your boiler installation.

Powerflush the system

The boiler is the heart of your central heating system. When a boiler is replaced, it’s often a good idea to opt for a powerflush of the entire system to prevent kettling or cold spots. By flushing out the sludge and debris that has accumulated, you’ll improve the efficiency of your entire central heating system. Powerflushing may only add half a day to a day to the entire installation, but it’s time well spent.

Your installation will be unique to your home, and should never be rushed. Always prioritise good workmanship to avoid problems in the future.