How Much Does a New Boiler Cost?
Last updated: July 2026
A new boiler installation typically costs between £2,600 and £3,400, depending on the type of boiler, the size of your property and the complexity of the installation.
As a general guide:
| Boiler type | Typical installed cost |
|---|---|
| Combi boiler | £2,700-£3,000 |
| Heat-only boiler | £2,600-£2,900 |
| System boiler | £3,000-£3,400 |
These figures include installation by a Gas Safe registered engineer but should be treated as a guide. Moving the boiler, changing the type of heating system or upgrading older pipework can increase the final cost.
APV Heating Services provides new boiler installations in Tunbridge Wells and surrounding areas. You can use our online boiler quote tool to compare the highly trusted Vaillant, Worcester Bosch and Ideal boilers and receive an initial estimate in just a few minutes.
Get an instant online boiler quote
What is included in the cost of a new boiler?
A professional boiler installation quote will normally account for:
- The boiler itself
- Removal of the existing boiler
- Installation by a Gas Safe registered engineer
- Connection to the existing heating system
- A suitable flue and basic installation materials
- Testing and commissioning of the new boiler
- Registration of the installation where required
The exact inclusions can vary, so it is important to check what is covered before comparing quotations.
What affects the cost of replacing a boiler?
Although two homes may appear similar, their boiler installation costs can be quite different. The main factors affecting the price are explained below.
The type of boiler
Replacing a combi boiler with another combi boiler in the same position is usually more straightforward than converting from a conventional or heat-only system.
Changing the type of heating system may require additional pipework, alterations to the hot-water system or the removal of existing tanks.
The size of your home
Larger properties generally require a boiler with a higher output. The installer will consider factors including:
- The number and size of the rooms
- The number of radiators
- The number of bathrooms
- Typical hot-water demand
- The insulation and heat loss of the property
Choosing the correct boiler output is important. A boiler that is too small may struggle to meet demand, while an unnecessarily powerful boiler may not operate as efficiently as it should.
Whether the boiler is being moved
Keeping the new boiler in the same location will generally help keep the installation simpler.
Moving it to a different room may require new gas, water and condensate pipework, together with changes to the flue. The distance and difficulty of the move will affect the additional cost.
The condition of the existing heating system
Older heating systems may need additional work before the new boiler is fitted. This could include:
- Cleaning or flushing the heating system
- Replacing unsuitable pipework
- Installing a magnetic filter
- Upgrading heating controls
- Addressing poor water circulation
- Replacing damaged or inefficient components
Completing appropriate improvements during installation can help protect the new boiler and support reliable long-term performance.
Flue and access requirements
The location of the boiler and the route available for the flue can affect the installation cost.
Additional work may be required where access is difficult or where the flue needs extensions, specialist components or alterations to meet current installation requirements.
Which boiler brands does APV Heating Services install?
APV Heating Services installs boilers from Vaillant, Worcester Bosch and Ideal. The right manufacturer and model will depend on your property, hot-water requirements, preferred features and available budget.
Vaillant boilers
Vaillant boilers are known for quiet operation, energy efficiency and a strong reputation for reliability. They are often chosen by homeowners looking for a premium boiler with dependable long-term performance.
They may be particularly suitable for:
- Family homes
- Larger properties
- Homes with higher heating and hot-water requirements
- Homeowners prioritising quiet operation and efficiency
Vaillant boilers come with a 10-year manufacturer's guarantee when installed by an accredited Vaillant installer such as APV Heating Services. To keep the guarantee valid, the boiler must be serviced every year in line with Vaillant's warranty requirements.
Worcester Bosch boilers
Worcester Bosch is one of the UK’s most widely recognised boiler manufacturers. Its range includes boilers suitable for different property sizes and heating-system types.
Potential benefits include:
- A broad choice of models
- Strong manufacturer support
- Energy-efficient options
- Manufacturer warranties on qualifying installations
Worcester Bosch boilers come with a 5-year manufacturer's guarantee. Customers can extend this to 7 years by purchasing the optional extended warranty (typically around £80).
Ideal boilers
Ideal boilers can provide a good balance between cost, efficiency and performance. They are frequently considered by homeowners seeking a reliable modern boiler at a competitive price.
Potential benefits include:
- Competitive purchase prices
- Modern heating controls
- Energy-efficient models
- Manufacturer warranties on qualifying installations
Ideal boilers come with an 10-year manufacturer's guarantee providing the boiler is serviced annually by an approved engineer.
Which boiler brand is best for you?
There is no single boiler brand that is best for every home. APV can recommend appropriate options after considering your property and heating requirements.
Get an instant new boiler estimate
Traditionally, homeowners have had to arrange an appointment before receiving any indication of what a replacement boiler might cost.
APV Heating Services’ online boiler quote tool allows you to answer a few questions about your property and heating system before viewing suitable options from:
- Vaillant
- Worcester Bosch
- Ideal
The tool provides an initial estimated installation price, helping you understand the likely cost and compare your options before arranging a survey.
The final specification and price will be confirmed after APV has checked that the recommended boiler and proposed installation are suitable for your home.
Compare new boiler prices online
New boiler installations in Tunbridge Wells and surrounding areas
APV Heating Services provides boiler replacement and heating services in Tunbridge Wells and nearby areas.
Choosing a local heating company means you have access to a team that can assess your property, explain the available options and provide continued support after the installation.
When you choose APV Heating Services, you will benefit from:
- Gas Safe registered engineers
- Clear and transparent quotations
- Professional boiler installation
- Vaillant, Worcester Bosch and Ideal boiler options
- Friendly local service
- Ongoing boiler servicing and maintenance
- Advice based on your home and heating requirements
Protecting your new boiler
A new boiler is a substantial investment, so regular servicing is important.
An annual boiler service can help:
- Check that the boiler is operating safely
- Maintain reliable performance
- Identify developing problems
- Reduce the likelihood of unexpected breakdowns
- Support energy-efficient operation
- Meet applicable manufacturer warranty conditions
APV Heating Services offers boiler maintenance packages covering annual servicing and ongoing support.
Frequently asked questions
An online boiler quote provides an initial estimate based on the information you enter. We will confirm the proposed boiler, installation requirements and final price after checking that the recommendation is suitable for your property.
Providing accurate information about your existing boiler, property and heating system will help make the estimate more useful.
Vaillant, Worcester Bosch and Ideal all produce boilers for a range of homes and budgets. The best choice will depend on factors including the size of your property, the number of bathrooms, your hot-water demand, preferred warranty and available budget.
A straightforward boiler replacement can often be completed in one day. More complicated work may take longer, particularly if the boiler is being moved, the heating-system type is changing or additional pipework is needed.
APV will explain the expected timescale as part of your quotation.
In most cases, yes. Keeping the replacement boiler in the same position can reduce the amount of new pipework and flue work required.
However, there may be practical reasons for moving it. APV can explain the likely additional work and cost before you make a decision.
A modern boiler will commonly last around 10-15 years when it has been correctly installed and regularly maintained. Its lifespan will also be influenced by usage, water quality, the condition of the heating system and how quickly developing faults are addressed.
It may be worth considering replacement when a boiler:
- Breaks down regularly
- Requires increasingly expensive repairs
- No longer heats the property reliably
- Provides insufficient hot water
- Is difficult to obtain parts for
- Is approaching the end of its expected working life
An engineer can help you compare the cost of continued repairs with the benefits of installing a newer boiler.
Find out how much your new boiler could cost
The cost of a new boiler will depend on the type of boiler, your property and the work required. As a general indication, APV’s typical installed prices currently range from approximately £2,600 to £3,400.
For a more personalised estimate, use APV Heating Services’ online quotation tool to compare suitable Vaillant, Worcester Bosch and Ideal boilers.
Get an instant online boiler quote
Alternatively, call APV Heating Services on 01892 352213 or email us on info@apvheatingservices.com for friendly advice about replacing your boiler in Tunbridge Wells and the surrounding areas.