---
title: "Boiler Installation Cost Guide (UK Prices 2026)"
description: "The average boiler replacement cost is £2,400 in 2026. This guide covers how much it costs to have a new boiler fitted, supply-only boiler prices, and more."
url: "https://www.myjobquote.co.uk/costs/installing-a-new-boiler"
last_updated: "2026-10-20"
---

# Boiler Installation Cost

 At a Glance

- The average boiler installation cost is around £2,400 in the UK.
- It typically takes 1 day for a heating engineer to install a new boiler.

 **In this boiler fitting cost guide:**

- How much a new boiler costs in the UK, the labour cost to fit a boiler, and what impacts the prices you're quoted in 2026.
- How long the job usually takes and what's involved in a boiler replacement.
- How to find a local boiler fitter with MyJobQuote.

  [Get free estimates](https://www.myjobquote.co.uk/heating-engineer) **Are you a trade? [Get more work today!](https://www.myjobquote.co.uk/tradespeople-signup)**

### Average New Boiler Installation Cost:

#### Depending on the complexity of the job, installation usually takes: 1 day

##### £2,400

## How Much Does a New Boiler Installation Cost?

**The average boiler installation and replacement cost across the UK is around £2,400.** This includes the cost of a new boiler, as well as the boiler fitting cost.

Boiler replacement costs you're quoted will *mainly* depend on the type of boiler you're installing, whether you're moving the boiler at the same time or need new pipework, and where you're located in the UK.

**Excluding supply costs, and in standard cases, you should expect the cost of boiler installation to be around £1,000.** However, prices you're quoted for labour could be as low as £600 or as high as £1,900.

Gas [combi boiler installation](https://www.myjobquote.co.uk/costs/new-central-heating-cost) typically ranges between £1,200 and £4,000, and installing a combi boiler along with new [central heating costs](https://www.myjobquote.co.uk/costs/installing-central-heating) between £4,200 and £7,500. This remains the most commonly installed type of boiler in the UK.

Homeowners who get quotes for the fitting of a mid-range gas combi boiler will land in the middle of this range, in the £1,800 to £2,800 bracket. You *can* replace a gas combi boiler for less than this, but *only* if it's a simple swap-out for a basic boiler model.

**Keep reading for an overview of how much all the different types of boilers cost to install in 2026.**

### Boiler Installation Prices

The table below provides an overview of typical new boiler installation and replacement costs in the UK.

| Boiler Type | Average Cost (Supply + Installation) |
|---|---|
| Combi Boiler | £1,200–£4,000 |
| System Boiler | £1,100–£4,000 |
| Conventional Boiler | £1,750–£5,500 |
| Electric Boiler | £2,300–£4,600 |
| Biomass Boiler | £8,400–£16,000 |

### How Much Does It Cost to Replace or Convert a Boiler?

What you pay also depends on whether you're swapping your existing boiler for the same type or converting to something different. Gravity-fed systems (sometimes called regular or conventional boilers) generally cost the most to convert from, as they involve removing a cold water tank and hot water cylinder.

| Job | Average Cost (Supply + Installation) |
|---|---|
| Combi to Combi (same location) | £1,200–£3,500 |
| Combi to System | £1,200–£4,000 |
| Combi to Conventional | £1,200–£4,000 |
| System to System (same location) | £1,250–£4,000 |
| System to Combi | £1,200–£3,500 |
| System to Conventional | £1,200–£4,000 |
| Conventional to Conventional (same location) | £2,500–£4,500 |
| Conventional to Combi | £2,500–£4,500 |
| Conventional to System | £2,500–£4,500 |
| Back Boiler to Combi | £3,200–£5,800 |
| No Existing Boiler (new combi system from scratch) | £4,200–£7,500 |

Swapping a boiler for the same type in the same spot is nearly always the cheapest option, as it avoids new pipework, flue changes, or tank removal. Converting between a combi and a system boiler often costs a similar amount to a like-for-like swap, but converting to or from a conventional boiler tends to cost more, since the tank and cylinder may need removing regardless of which boiler you're moving to.

[Moving the boiler's location](https://www.myjobquote.co.uk/costs/boiler-relocation) adds further cost on top of any of these figures.

These costs all assume you have mains gas available at the property, but if you currently don't and the property needs a [new mains gas connection](https://www.myjobquote.co.uk/costs/cost-of-running-gas-to-a-property), this will add to the costs.

### Calculate Your New Boiler Installation Cost

*Looking for a quick estimate on boiler installation costs?*

**Try our [boiler installation cost calculator](https://www.myjobquote.co.uk/cost-calculators/boiler-installation-cost-calculator) to get an estimated figure.**

All you need to do is submit a few details about your property and boiler needs.

Boiler sizing depends on the heating and hot water that will be required, usually gauged by the number of bedrooms and bathrooms. A small to medium home with one bathroom typically needs a combi boiler with an output of 24 to 30kW, while a larger home will need a more powerful boiler.

**If you're unsure about the size of boiler you need for your home, try our [boiler size calculator](https://www.myjobquote.co.uk/cost-calculators/boiler-size-calculator).**

These calculators give you a useful starting point, but the best way to get an accurate price is to request [quotes from local boiler installers](https://www.myjobquote.co.uk/heating-engineer).

*Quotes through MyJobQuote are fast, free, with no obligation to go ahead.*

What type of new boiler are you installing?

Combi boiler

19 votes - 58%58% of votes

Conventional boiler

7 votes - 21%21% of votes

Electric boiler

2 votes - 6%6% of votes

Biomass boiler

0 votes - 0%0% of votes

System boiler

5 votes - 15%15% of votes

 **33 votes** See results Hide results

## How Much to Fit a Boiler? (Labour Only)

**The average cost of labour when getting a new boiler installed is between £600 and £1,900.**

Exactly where you land in that range depends on the job. The table below gives typical labour-only costs and timescales for common scenarios.

| Job Type | Labour Cost Only | Typical Timescale |
|---|---|---|
| Like-for-like swap (same type, same location) | £600–£900 | 4 to 6 hours |
| Like-for-like swap (same type, new location) | £1,000–£1,300 | 1 to 2 days |
| Converting to combi/system/conventional boiler (same location) | £900–£1,300 | 1.5 to 2 days |
| Converting to combi/system/conventional boiler (new location) | £1,400–£1,900 | 2 to 3 days |
| Converting a back boiler to a combi | £1,200–£1,700 | 2 to 3 days |

A straightforward like-for-like swap is usually finished within a day, since the pipework, flue, and gas supply are already in place. Converting to a different boiler type, or moving its location, adds time for new pipework and flue routing, which is reflected in the higher labour cost.

Converting a back boiler (a boiler that sits behind a fireplace) to a combi boiler is a slightly different process, due to a different decommissioning and removal process and the need for a new boiler installation elsewhere, so this also requires more work and will cost more.

**However,** these labour costs are dependent on the following:

- If you're having a like-for-like replacement boiler (e.g., same type of boiler, in the same location).
- Whether you're converting to a different boiler type or fuel.
- The ease of access to the current boiler position.
- If you want the new boiler installed in a different location.

**The bottom line:** the more straightforward the job, the less you'll pay in labour.

## How Much Does a New Boiler Cost? (Supply Only)

New boiler prices vary depending on the **type of boiler** and whether or not it is from one of the **leading manufacturers**.

| Boiler Type | Supply Cost |
|---|---|
| Combi Boiler | £600–£2,300 |
| System Boiler | £500–£1,700 |
| Conventional Boiler | £1,150–£2,800 |
| Electric Boiler | £1,700–£2,900 |
| Biomass Boiler | £7,800–£14,500 |

Let's look at the most common boiler types in detail:

### Combi Boiler Cost

A combi boiler heats water on demand for your central heating and hot water system, without the need for a separate hot water tank. When it comes to installing a new boiler, a combi boiler that runs off gas is the most common option within the UK.

Combi Boiler: £600 to £2,300

- **Running Costs —** Cheapest fuel per unit if using gas, at around 7.33p per kWh.
- **Hot Water Capacity —** Might not be suitable for very large homes with high demand.
- **Water Pressure —** Requires high water pressure.
- **Installation —** Efficient and compact design, connected to the mains.
- **Suitability —** Not an option for homes that are located off-grid, and gas options use fossil fuels.

### System Boiler Cost

A system boiler takes its water supply directly from the mains, but stores the hot water in a cylinder. This type of boiler doesn't need a cold water tank, and allows for more than one hot water outlet.

System Boiler: £500 to £1,700

- **Hot Water Capacity —** Hot water can run out.
- **Water Pressure —** Good water pressure.
- **Installation —** Requires a separate hot water cylinder, taking up more space than a combi boiler.
- **Suitability —** Useful for homes with more than one bathroom.

### Conventional Boiler Cost

Conventional boilers are perfect for larger homes and are composed of a cold water storage tank (often fitted into the loft), along with a hot water cylinder, and are usually either a [gas boiler](https://www.myjobquote.co.uk/gas-boiler) or an oil boiler.

Conventional Boiler: £1,150 to £2,800

- **Running Costs —** Cheaper than electricity. Oil running costs are around 9p to 11p per kWh.
- **Hot Water Capacity —** Can use multiple taps at the same time.
- **Water Pressure —** Generally provide lower pressure than system and combi boilers, but don't rely on mains pressure so can be good for homes with low pressure.
- **Installation —** Requires a cold water tank and a hot water cylinder, and more complex to install.
- **Suitability —** Great for heating larger homes but fuel for an oil boiler needs to be ordered in advance.

The [cost of installing an oil boiler](https://www.myjobquote.co.uk/costs/cost-of-installing-an-oil-boiler) is around **£2,200 to £5,500** (not including fuel prices) although oil-fired boilers are often more commonly found in off-grid properties.

### Electric Boiler Cost

An [electric boiler](https://www.myjobquote.co.uk/electric-boiler) is less common than gas, but a great option for a new boiler as it is energy-efficient and environmentally friendly. Electric boilers convert almost all the electricity they use into heat, although due to the way electricity is rated, they usually get a D rating on ErP energy labels.

Electric Boiler: £1,700 to £2,900

- **Running Costs —** Higher than gas, at around 26.11p per kWh under the 2026 Ofgem price cap.
- **Hot Water Capacity —** Not suitable for high demand, and may need a hot water cylinder.
- **Installation —** Compact design, no flue required.
- **Suitability —** Almost 100% energy-efficient, and produces heat without any noise.

### Biomass Boiler Cost

A [biomass boiler](https://www.myjobquote.co.uk/costs/biomass-boiler) is a lower carbon option than gas or oil boilers, as it works by burning wood to produce the energy required to heat your water, although burning wood can release fine particle air-pollutants. This is usually done with wood chips, pellets, or logs.

Biomass Boiler: £7,800 to £14,500

- **Running Costs —** Low running costs, at around 7p to 9p per kWh.
- **Installation —** Requires a bulky fuel store, with an expensive upfront cost.
- **Suitability —** Energy efficient and useful for off-grid homes, although high maintenance.

I'm planning ahead for a new boiler in my 4-bedroom house. What should I budget for?

"This would depend on the boiler you want to put in, how many rads, and the complexity of the job, as there are many variables to consider. Rough price including installation: £2,400 or more."

 [Sycamore Gas Ltd](https://www.myjobquote.co.uk/t/sycamore-gas-ltd)

## Factors That Impact Boiler Installation and Replacement Costs

The cost of installing a new boiler is determined by:

- **The Boiler's Brand —** Premium boiler brands like Viessmann, Vaillant, and Worcester Bosch will typically charge more than mid-range boiler brands like Baxi and Ideal.
- **Your Home's Location —** Homes in London or the surrounding areas can cost **£250 to £700** more than those in the north of the UK due to increased demand.
- **Replacing Boiler Like-for-Like —** Swapping your old combi boiler for a new combi boiler will have significantly lower labour costs than if you were to change fuel type.
- **Replacing Boiler with a Different Fuel Type —** New pipework, fuel lines, upgrading or removing water tanks, electrical and flue work will all bump up your installation and boiler replacement costs if you're changing your boiler's fuel type. A boiler conversion cost is typically higher than a straightforward like-for-like replacement because of the additional system alterations needed.
- **National or Local Installer —** Opting for a local provider will carry lower labour costs than if you were to choose a national installation company, as their overheads will be lower, saving you **£500 to £1,500** in labour costs.
- **Time of Year —** Heating engineers are busiest over the winter months, so booking your installation in spring or summer can sometimes mean a lower price and a quicker appointment.
- **Access to Your Boiler —** A boiler that's hard to reach, such as one in a loft or a tight cupboard, can take longer to remove and fit, which increases labour costs.
- **Pipework and Flue Changes —** If new pipework or flue routing is needed to fit the boiler in a new position, or to suit a different boiler type, this adds to both materials and labour time.
- **Boiler Output —** A higher kW boiler, needed for larger homes with more radiators and bathrooms, generally costs more to buy than a smaller model for a flat or one-bathroom house.

## Additional Boiler Installation Costs

Replacing your boiler doesn't mean you need to overhaul your home's entire heating system. Removing your old boiler is normally included as standard in a replacement job, so it isn't an extra cost, but a few optional add-ons are worth budgeting for.

- **Magnetic Filter —** around £120 to £250, to help stop future debris building up and protect your new boiler.
- **[Smart Thermostat](https://www.myjobquote.co.uk/costs/smart-thermostat-cost) —** around £265, giving you control over your heating from your phone and helping to manage energy use.
- **Thermostatic Radiator Valves (TRVs) —** around £70 to £140 per radiator, letting you set different temperatures room by room to cut energy use in rooms you don't use often.
- **[New Radiators](https://www.myjobquote.co.uk/costs/remove-and-replace-a-radiator) —** around £200 per radiator to remove and replace, worth considering if you're still getting cold spots after a system flush.
- **[Boxing In Your Boiler](https://www.myjobquote.co.uk/costs/box-in-boiler) —** around £335, to keep the unit out of sight and tidy up the room.
- **Boiler Relocation —** around £750 on average, though this varies depending on the pipework, flue, and distance involved.

Starting to think about doing a kitchen remodel and would like to move our boiler out of the kitchen. Does it have to be installed on an outside wall?

"The most simple answer to that question is no it doesn't, but the flue has to exit the property so the further away you have the boiler from an external wall the more the boiler install will cost in parts. Also, if any boxing is required around the flue, access panels will also have to be installed, which will also add to the cost."

 [Manako Plumbing and Heating](https://www.myjobquote.co.uk/t/manako-plumbing-and-heating)

## How to Reduce the Cost of a New Boiler

Installing a new boiler and the cost of any updates or improvements to your heating systems can be quite an investment. Here are a few ideas on how you can save on your new boiler installation costs:

- **Compare Quotes —** While the prices for different boilers may be similar, labour costs can vary, so compare a number of quotes for the total installation costs to get the best deal.
- **Check Your Requirements —** Speak to your installer to understand which boiler is best suited for your home, so you avoid spending more on capacity and features you don't need.
- **Don't Make Big Changes —** Like-for-like replacements will usually be the cheapest installation, so try to avoid moving your boiler or making other big changes that will add costs.
- **Check Warranties —** While it might not reduce your installation costs, checking warranties for the best option may end up saving you money down the line.

## Heat Pump vs Boiler: Which Is Right for You?

When it comes time to replace your existing boiler, it's often a good opportunity to look into whether a traditional boiler is still right for your home heating setup, or if there are other alternatives that might be better.

With the government's commitment to encouraging cost-effective, low carbon alternatives to traditional boilers, heat pumps (particularly air source heat pumps) have become a popular option with some households, especially with the various grants and financial incentives available.

But should you simply replace your existing boiler like-for-like, or perhaps consider the greener option of a heat pump?

### Installing a New Boiler

Choosing to install a brand new version of your existing boiler may be the easiest choice, but are you missing out on an opportunity to improve your home heating setup and your carbon footprint?

New Boiler Installation

- **Best For —** Homes looking for the least disruption and an effective, reliable source for heating and hot water.
- **Upfront Cost —** The cheaper upfront option, with a like-for-like boiler replacement costing around £2,400.
- **Efficiency —** A new, modern boiler should prove to be reliably more efficient than an old, less-efficient boiler.
- **Running Costs —** Similar to your current costs and possibly less with increased efficiency, but dependent on fuel costs and usage.
- **Convenience —** A straightforward boiler replacement will be the simplest installation, with minimal additional work or inconvenience.
- **Green Credentials —** Still burning fossil fuels and creating emissions, although improved efficiency may reduce these slightly.
- **Drawbacks —** Heating costs could rise due to increasing fuel prices and you will still be having an environmental impact.

### Switching to an Air Source Heat Pump

Upgrading your home heating setup with an [air source heat pump](https://www.myjobquote.co.uk/costs/air-source-heating-pump) might seem like a sensible option for you and the planet, but will it come at a cost to your wallet and the warmth of your home?

Air Source Heat Pump Installation

- **Best For —** Households looking to invest in reducing their carbon footprint who have the space for all the necessary equipment.
- **Upfront Cost —** With the new technology and additional equipment required, the upfront cost is much higher, around £13,000 before any grants.
- **Efficiency —** Heat pumps can be up to 3 to 4 times more efficient than traditional gas boilers.
- **Running Costs —** Dependent on the equipment and your electricity tariff, but could cost less in the long run, especially if paired with options like solar panels.
- **Convenience —** Depending on the equipment and your current setup there could be quite a lot of work to change to a heat pump heating system.
- **Green Credentials —** With no direct carbon emissions from using them, they have a much lower environmental impact, especially if using solar power, as well.
- **Drawbacks —** May require an upgrade of your whole heating system and efficient home insulation to make it a suitable heating alternative.

### Heat Pump vs Gas Boiler Cost

As well as thinking about heating efficiency and environmental impact, one of the key considerations if you're weighing up the choice between a new boiler and a heat pump is likely to be the cost. The table below looks at this cost comparison in more detail.

| Cost | New Gas Boiler | Air Source Heat Pump |
|---|---|---|
| Typical supply & installation | Around £2,400 | Around £13,000 |
| Boiler Upgrade Scheme grant | Not eligible | £7,500, subject to eligibility |
| Indicative cost after grant | Around £2,400 | Around £5,500 if eligible |

These are typical costs and they may vary depending on your home and current heating setup. The Boiler Upgrade Scheme is available in England and Wales (see below for more details), although other funding support options may be available elsewhere.

While there's no doubt the heat pump option will cost more upfront, with the available grants and funding, this can be significantly reduced, and with the potential of lower running costs in the long run, reducing your environmental impact may not be so costly, after all.

## New Boiler Grants and Financial Help

There are several schemes in the UK that could help reduce the cost of installing a new boiler, depending on where you live and the heating system you're installing. Below are a few details related to each one:

- **[Boiler Upgrade Scheme (BUS)](https://www.gov.uk/apply-boiler-upgrade-scheme) —** Available in England and Wales, this provides support for new heat pumps or eligible biomass boilers (for rural properties off the gas grid), but doesn't cover new gas, oil, or electric boilers. In Scotland, Home Energy Scotland provides grants and loans for biomass boilers and heat pumps.
- **[ECO4 (Energy Company Obligation)](https://www.ofgem.gov.uk/environmental-and-social-schemes/energy-company-obligation-eco) —** Running until 31 December 2026, this helps eligible households and homeowners in England, Scotland, and Wales with funding to replace old, inefficient, and irreparable boilers by installing one that is more efficient.
- **Local Authority Grants —** Check with your local council, as they may also offer grants or loans for work relating to improving energy efficiency, which may include a boiler replacement scheme.

Eligibility criteria apply to each of the above schemes, so it's worth checking your circumstances before planning to have a new boiler fitted as you may be able to save some money along the way.

## Benefits of Installing a New Boiler

Installing a new boiler can mean quite an investment, but if your old boiler is getting to the end of its useful life, there can be a number of benefits of choosing to replace it with a new one.

- **Efficiency —** Your new boiler is likely to be more efficient than your old one, not only heating your home better, but also using less fuel and costing less to do so.
- **Consistency —** A new boiler means you should be able to get your heating and hot water at the temperature you want it, when you want it.
- **Reliability —** If your old boiler is prone to breakdowns and needs regular repairs, installing a new boiler should make your heating and hot water much more reliable.
- **Control —** With new boiler technology and smart controls and thermostats, you could have better control over your heating and its cost.

## Signs You Need a New Boiler Installed

*Is it time to replace your boiler?*

Here are the [tell-tale signs](https://www.directline.com/home-cover/magazine/need-a-new-boiler) to look out for that signal it's time to replace a boiler:

- **Odd Noises —** If you're hearing popping, knocking, or hissing noises while your boiler's in use, it might be a sign that the internal components are failing.
- **Frequent Repairs —** You should have your [boiler serviced](https://www.myjobquote.co.uk/costs/cost-to-get-your-boiler-serviced) once a year, but if you're finding yourself booking additional repair services each year, it can be a sign that it needs replacing with a newer model.
- **Leaking System —** Repeated leaks or loss of pressure can indicate a problem with your boiler or central heating system. These issues should always be investigated by a qualified engineer and repaired or replaced if necessary to ensure safe and efficient operation.
- **Temperature Fluctuations —** If you've noticed your water takes a long time to heat up or switches between hot and cold when running, it can be an indicator that something's wrong with your boiler.
- **Boiler Age —** Boilers older than 15 years are over the typical 10 to 15 year lifespan of a well-maintained boiler, and as they may be less efficient, you might want to consider replacing them. Doing so can potentially save you an estimated **£250 to £350 per year** on your energy bills.
- **Planning an Extension —** You should add a new boiler to your [house extension](https://www.myjobquote.co.uk/costs/house-extension) costs if you're planning on extending your home, as your existing boiler may be too small to heat your new square footage adequately.

### Should You Repair or Replace Your Boiler?

Not every issue means you need a full replacement. Here's a general guide to help you decide.

**Repairing may be enough if:**

- Your boiler is under 10 years old.
- Breakdowns are rare and the repair bill is under roughly £500.
- The rest of your heating system is in good working order.

**Replacing is usually better value if:**

- Your boiler is over 10 to 15 years old.
- Repair costs are adding up and have passed roughly £500 in total.
- Parts are becoming hard to source for your model.
- Your energy bills keep rising despite regular servicing.

If my boiler's heat exchanger breaks, should I repair it or replace the whole boiler?

"That all depends on the type of boiler you have. Some boilers it's cheaper to replace the main heat exchanger, but on others it's considered to be beyond economical repair."

 [Kudsi Plumbing and Heating Ltd](https://www.myjobquote.co.uk/t/kudsi-plumbing-and-heating-ltd)

## What's Involved in a New Boiler Installation?

You shouldn't ever fit a new boiler as a DIY project as the consequences of poor boiler installation can be fatal, and it isn't something you should try and cut corners on purely to save time and money.

Gas boilers must be installed by a Gas Safe registered engineer, and oil, electric, and biomass boiler installations must comply with building regulations. In England and Wales, an installer registered with a suitable competent person scheme can self-certify these jobs once complete.

By using MyJobQuote, you can find local [heating engineers](https://www.myjobquote.co.uk/heating-engineer) in your area. We recommend homeowners request at least three separate quotes before committing.

Once you've decided you need a boiler replacement and have found a suitable installer, here's a breakdown of [what to expect](https://www.myjobquote.co.uk/guides/boiler-installation) (based on the steps involved for installing a standard gas combi boiler):

### Before the Job

- **Initial Assessment —** The installer will check your existing system and boiler location, assessing any potential complications before work begins. If any pipework changes or upgrades are needed, then your engineer will need to plan these in advance.

### During the Job

- **Removing the Old Boiler —** The time this takes will vary depending on the existing system and the complexity of the job.
- **Preparing the System —** The installer will flush and clean the system to remove debris (a [power flush](https://www.myjobquote.co.uk/costs/power-flush-cost) may be needed if there is significant sludge or debris). Any necessary pipework changes or upgrades will also be carried out, particularly if the boiler location is changing.
- **Installing the New Boiler —** The new boiler is then fitted into place, along with any recommended protective extras, such as a system filter, filling loop, or magnetic filter.

### After the Job

- **Final Checks —** The installer will run the boiler and system to ensure everything is working correctly, making any tweaks if and where required.
- **Instructions —** As well as leaving you with an instruction manual, there should be time to demonstrate how to use the controls and carry out any basic maintenance such as adjusting the pressure and bleeding radiators where appropriate.
- **Register the Boiler —** The final step is registering the boiler with the manufacturer so that your product guarantee is valid. This then provides cover in the event any problems arise during the warranty period.

How long does it take to fit a new boiler if it's a straightforward combi-to-combi swap?

"If it's just a standard combi-to-combi installation, it generally takes about 4 to 6 hours in total. If you need water, have a word with the installer, as they'll be able to make provisions to get the cold water back on sooner."

 [J A Nippers Heating and Plumbing](https://www.myjobquote.co.uk/t/j-anippers-heating-and-plumbing)

## Checklist: Hiring Local Boiler Installers in the UK

There are a few things you will need to consider before hiring someone to fit a new boiler for you. Here's what we suggest:

- **Have you received at least 3 quotes?** Find different installers in your area via MyJobQuote and request at least three separate quotes, at no obligation to go ahead, so you can compare prices.
- **Have they provided a detailed breakdown?** Ask for the quote to be itemised, so you see exactly what's included, while keeping an eye out for any hidden boiler costs that may be involved.
- **Are they registered for your fuel type?** Gas boiler installers must be Gas Safe registered, and installers of oil, electric, and biomass boilers need to be registered with a suitable competent person scheme (such as OFTEC, NICEIC, or HETAS) to self-certify their work. Some manufacturers also offer specific training or certification for their products, so a Worcester accredited installer will be better-qualified to install a Worcester boiler.
- **Do they have positive feedback?** Check for online reviews such as their MyJobQuote profile and read what any recent customers have to say about the quality of work and the tradesmen involved.
- **Does your new boiler installation come with a warranty?** Any reputable company will issue a warranty or guarantee on its work. However, you should always have this in writing in the event of any dispute.
- **What insurance does your tradesman have?** The majority of companies and individuals will hold at least Public Liability Insurance in the event of personal injury or accidental damage.

## FAQs

### How Much to Fit a Worcester Bosch Boiler?

The cost to fit a Worcester Bosch boiler typically ranges from £1,200 to £4,500, depending on the model, complexity of the installation, and if you are changing the boiler type.

### Can I Install a Boiler Myself?

Installing a boiler is not recommended as a DIY project. Depending on the type of boiler, they require specialised knowledge in gas, plumbing, and electrical work, which can be dangerous if done incorrectly. Always use a qualified professional for safety and compliance. Gas boilers need to be fitted by a Gas Safe registered engineer.

### Do I Need Planning Permission to Install a New Boiler?

[Planning permission isn't normally required](https://www.planningportal.co.uk/permission/common-projects/boilers-and-heating/planning-permission) if you're replacing an existing boiler without major structural changes. However, if you live in a listed building, a conservation area, or are installing an external flue, then it is always best to check with your local council first for any advice.

### Can I Convert a Gravity-Fed System to a Combi Boiler?

Yes. A gravity-fed system is another name for a conventional or regular boiler, and converting one to a combi is a popular upgrade. It costs more than a like-for-like swap, since the storage tank and cylinder need removing and new pipework and flue routing are usually required. See the "How Much Does It Cost to Replace or Convert a Boiler?" table above for typical prices.

### What Is a Condensing Boiler?

A condensing boiler recovers heat from exhaust gases that inefficient boilers waste, reducing your carbon footprint and cutting running boiler costs. All new gas boilers installed in the UK must be condensing by law, which means that any new gas boiler will be an A-rated condensing boiler as standard.

### Can I Get a Hydrogen Boiler Installed?

Boilers that can run on a blend of gas and hydrogen, and models capable of being converted to run on hydrogen in the future with a kit from manufacturers (running on gas now), are currently available. However, [boilers that run on 100% hydrogen](https://www.myjobquote.co.uk/costs/installing-a-hydrogen-boiler), and the ability to supply hydrogen for domestic heating, are not currently available and there is no guarantee there will be a domestic hydrogen supply.

### Why Is It So Expensive to Install a New Boiler?

A significant part of the overall price is due to the labour costs. A Gas Safe registered engineer needs time to remove the old unit, adapt pipework and the flue where needed, fit and test the new boiler, and register it with the manufacturer. Costs rise further if you're changing boiler type, moving its location, or fitting in a home with no existing gas or heating infrastructure.

### What Is the Best Time of Year to Replace a Boiler?

Late spring and summer, roughly May to September, tend to be quieter for heating engineers, which can mean shorter waits and more competitive quotes. Booking in advance rather than waiting for a winter breakdown also gives you more time to compare quotes rather than needing an emergency callout.

### Is It Worth Replacing a 15-Year-Old Boiler?

In most cases, yes. Boilers over 15 years old tend to run well below the efficiency of a modern A-rated condensing boiler, meaning higher energy bills, and parts can become harder to source. If your boiler is this age and breakdowns or repair costs are becoming frequent, replacement is usually the better long-term option, even though it's a larger upfront cost.