How Much Does a Plumber Charge to Install a Boiler UK?

James Elston
Written by James Elston
Updated on 14th November 2023
Posted on 2nd November 2023
Topic: Boiler Advice

So, you’re considering a new boiler installation but wondering about how much a plumber costs to install a boiler?

The process of installing a boiler is costly and always needs to be done safely.

Luckily, the experts at Boiler Central are here to answer your questions in relation to how much a plumber charges to install a boiler and more.

We will shed light on the ins and outs of the potential reasons for the reason behind the charges for boiler installation by a plumber in the UK.

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What kind of fuel does your boiler use?

Plumber charges and rates for gas boiler fitting

Installing a gas boiler involves a fully qualified plumber (who is Gas Safe registered) taking several important steps that will drastically make a difference to the overall cost. 

From the cost of a new boiler to choosing the type of boiler to hiring the right plumber at the right price for the job, each of these aspects contributes to the final charges added by the plumber.

Read more – can a plumber install a boiler?

Plumber rates to install a boiler

Installation typePlumber Cost
New boiler£600
Combi Swap£400
Boiler Move£600
Conversion with move£1,100
*Rates are an estimate for the average across the UK

Factors Affecting Plumber Costs

The cost of installing a boiler can vary widely based on multiple factors, such as the type of boiler chosen, the complexity of the installation, and the additional work required.

Types of Boilers

Boilers come in various types, such as combi, system, or regular boilers.

Each type has its distinct installation requirements and associated costs. The type of boiler you already have will pretty much decide if the cost of boiler installation by a plumber is high or low. 

For example, a conventional boiler costs more initially to buy and is often more expensive to install than a combi boiler. This is due to the fact it needs to be also connected up to the 2 separate hot water tanks by the plumber.

Plumber Prices Including National Average vs. Local Variations

While there’s a national average cost for boiler installation by a plumber, the final cost can significantly vary based on your location due to varying labour rates and availability.

For example in the UK, a plumber will charge more for fitting a boiler in London than they will in Wakefield or Scotland. 

This is mainly due to the cost of living and high demand in London and unfortunately, costs are passed on to customers. 

Plumber Labour Rates per hour

Skilled plumber labour for installation is a big cost you need to take into account and is wholly influenced by the complexity and time required for the boiler installation.

Understanding the breakdown of costs, including materials, plumber labour rates, and any additional extras required, gives a clear picture of what to expect.


The cost of the boiler itself, along with any additional materials needed for installation, impacts the overall expense.

Optional Extras

Additional work, like replacing radiators or upgrading the system, adds to the total cost.

Hiring Considerations

Finding a reputable and experienced plumber that is suitably qualified such as being on the Gas Safe register is vital.  Ask your friends, family, and neighbours for recommendations of previous good plumbers is a great way to find a competent plumber at a good price who also has a good reputation.

These considerations when hiring a professional plumber greatly impact the overall cost and quality of work plus make sure that you are covered by insurance if anything goes wrong. 

An illegal installation by an unqualified plumber can be disastrous.


When it comes to what plumber charges for boiler installation, as long as you are capable, understanding the various factors influencing the cost of installing a boiler is pretty important.

From the type of boiler to labour and additional work which may occur during or after the fitting, each different part contributes to the overall expense. 

Did you know that at Boiler Central all our online prices for boiler replacement are fixed? As long as you anser truthfully, you can get a great boiler at a great price with a fully qualified heating engineer who is Gas Safe registered. 


Can I save money by installing the boiler myself?

Unless you are suitably qualified, no, you can’t – it is illegal. Installing a boiler yourself might save money but it could cost you in the long run and lead to significant issues if not done correctly.

Hiring a professional ensures the job is done safely and legally.

Why does the cost of installation vary based on location?

Local variations in labour rates and availability of materials impact the overall cost, leading to discrepancies in installation expenses.

Are there ways to reduce the cost of boiler installation?

Opting for a simpler boiler type and minimising additional work can help reduce the overall cost of installation.

What are the most common additional costs associated with boiler installation?

Additional radiator replacements, system upgrades, and piping alterations are common extra expenses during installation.

How do I find a reliable plumber for boiler installation?

Seek recommendations, check reviews, and ensure the plumber is licensed and experienced to ensure quality and reliability in the installation process.

Written by
James Elston
James Elston Director Of Boiler Central
Posted on: 2nd November 2023
Topic: Boiler Advice

James Elston is our resident boiler replacement and heating expert here at Boiler Central. With over 20 years experience in the boiler installation industry, James ensures that he knows everything there is about our Gas Safe boiler installations, energy saving and home heating solutions. This can be from simply procuring the latest best combi boilers, to reviewing and ensuring that Boiler Central maintains the highest standards across our boiler installation company.

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