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How much will a new boiler replacement cost?

How much will a new boiler replacement cost?

This is likely to be one of the first questions on your mind if you’re considering getting a new boiler installed. There’s no definite answer to this question; prices can vary and tend to be reliant on many factors such as the type of boiler you choose, its size and the complexity of the installation process.

When replacing your boiler, try to remember that cheaper is not always better. It’s best to bear in mind that you’re actually paying for the quality of your home’s heating, and although modern boilers tend to be expensive, they are often designed with innovative features that could potentially help you heat your home more efficiently - so they could end up saving you money in the long run [2].

The price of your replacement boiler could also depend on the brand you choose, as some manufacturers, such as Worcester Bosch, are considered to be more premium than others. Additionally, it’s always best to ensure that a Gas Safe registered engineer, who has the necessary skills and knowledge, carries out the installation as this will ensure that it’s completed in a safe and professional manner.

Here’s a table detailing the estimated costs of boilers from some of the UK’s popular boiler brands according to Which?:

Boiler Brand Estimated Cost
Worcester Bosch £570-£6188
Vaillant £740-£1500
Baxi £570-£2172
Ideal £590-£2200
Potterton £610-£1000
Viessmann £740-£1500
Vokera £575-£1200
Alpha £700-£2250


The cost of the boiler itself is typically lower than the overall price of the replacement due to additional labour costs. However, if your installation requires additional measures such as scaffolding or pipework modifications, this could also make prices slightly higher. Costs could also rise if you choose to change from one system to another, such as from a regular heat only boiler to a combination boiler. Likewise, if you decide to stick with the same type of boiler, such as a straight combination to combination swap - prices may be higher.

To get a better idea about how much a new boiler for your home could cost, why not use our free online quote tool? We take into consideration factors such as your fuel source, preferred boiler type and budget, to provide you with a fixed-price quote for a boiler that could meet your needs [28].

 [2] Source: energysavingtrust.org.uk. Saving calculated when replacing G rated with A rated boiler in a semi-detached house.                              

[28] Exclusions apply. See www.help-link.co.uk/fixed-price-quote-faqs