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Last updated: 23rd April, 2024


Boiler Installation Bolton

Boiler Installation Bolton

Key takeaways

  • Boiler installation costs in Bolton are influenced by factors like boiler type and installation complexity.
  • Electric boilers may provide a more economical option for servicing compared to gas boilers.
  • The planning phase should include research on financial incentives to optimise the installation budget.

The expense incurred from installing a boiler can vary significantly based on factors such as the type of boiler, the complexity of the installation, and regional pricing differences.

Boiler installation in Bolton is an essential consideration for homeowners and property managers preparing for the colder months or upgrading their central heating systems. In 2024, the process and costs associated with installing a new boiler have become more transparent, allowing individuals to budget effectively. It's vital to understand the type of boiler suited for one's home, the intricacies of installation, and the importance of proper maintenance post-installation.

In Bolton and across the UK, the expense incurred from installing a boiler can vary significantly based on factors such as the type of boiler, the complexity of the installation, and regional pricing differences. 

While standard gas boiler services can range in costs, opting for an electric boiler is seen as a slightly more economical choice due to simpler servicing needs. Planning for boiler installation should also involve consideration of financial incentives and support, ensuring a cost-effective approach is taken.

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Understanding Boiler Types in the UK

Choosing the right type of boiler for one's home in the UK hinges on understanding their unique characteristics and functionalities. This section delineates the various boiler types on offer, their distinctive advantages, and their suitability for different households.

Combi Boilers

Combi boilers, or combination boilers, are a prevalent choice in the UK. They serve as a high-efficiency water heater and a central heating boiler, compactly combined into one unit. Combi boilers heat water directly from the mains when the tap is turned on, which means there's no need for a separate hot water storage cylinder or a cold water storage tank in the roof space.

System Boilers

System boilers, similar to combi boilers, incorporate a hot water storage cylinder but, unlike combi boilers, they do not require a cold water tank. They are particularly suitable for homes with multiple bathrooms where a lot of hot water is used simultaneously. Even if the mains water pressure is low, a system boiler ensures consistent hot water flow.

Conventional Boilers

Also known as heat-only or regular boilers, conventional boilers necessitate both a hot water cylinder and a cold water tank. They can supply a large volume of hot water to multiple bathrooms, making them ideal for larger homes with traditional heating and hot water systems.

Electric and Gas Boilers

While gas boilers are widely used across the UK due to their cost-effectiveness and efficiency, electric boilers are an alternative for homes that lack a mains gas supply. Electric boilers are often considered to be 99% efficient, but the higher cost of electricity can make running costs higher compared to gas boilers.

Condensing Boilers

Condensing boilers, whether combi, system, or conventional, have become a mandatory choice because they are engineered to capture a larger amount of heat from the flue gases, increasing their efficiency. This not only helps in reducing heating bills but also lowers carbon emissions, aligning with the UK's environmental goals.

Bolton Boiler Installation in-depth Prices Breakdown:

When considering a new boiler installation in Bolton, homeowners may come across a range of prices due to various factors including boiler type, complexity of installation, and additional components required.

Average Costs for Types of Boilers:

  • Combination boilers (Combi): Typically around £2,400 + VAT.

  • Conventional boilers: Approximately £2,000 + VAT.

The installation process involves several stages which contribute to the overall cost. Firstly, the removal of the old boiler incorporates labour and disposal costs. Subsequently, the new boiler must be fitted in a location such as a kitchen or under stairs space.

Installation Steps:

  1. Old Boiler Removal: Labour, safety checks, and disposal.

  2. New Boiler Placement: Aligning the new unit with the existing piping and infrastructure.

  3. System Connection Adjustments: Pipes, radiators, and water outlets.

  4. Safety and Efficiency Testing: To ensure correct operation.

It is crucial for installers to connect the new boiler to the household's central heating system through a series of pumps and pipes. Additionally, electric controls are installed to manage heating operations seamlessly. After these steps are undertaken, rigorous testing ensures everything is functioning as intended.

Each phase of the installation contributes to the final cost, with bespoke challenges or additional requirements potentially increasing expenses. It is advisable for residents to consult with local experts for detailed quotations, considering both material and labour costs. Heating engineers in Bolton typically provide such estimates following an assessment of the property and the heating system's requirements.

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Bolton Combi Boiler Installation Average Costs

In Bolton, the average cost for combi boiler installation varies based on factors such as boiler type and customer location within the region. These installations typically range between £1,500 and £4,500.

Most Expensive and Least Expensive Bolton Postcodes

Most Expensive Postcodes:

  • Residents in postcodes such as BL1 and BL7 may encounter costs at the higher end of the price spectrum.

Least Expensive Postcodes:

  • Conversely, areas like BL3 and BL6 often see the most affordable installation quotes.

Bolton System & Heat Only Boiler Installation Averages

In Bolton, the cost of installing system and heat-only boilers is influenced by several factors. The price variations are often due to differences in postcodes, where certain areas may incur higher labour rates and material costs. It's crucial to understand the financial landscape of boiler installations across various Bolton postcodes to anticipate your expenses accurately.

Most Expensive and Least Expensive Bolton Postcodes

Most Expensive Bolton Postcodes:

Labour and material costs in these postcodes can drive the overall boiler installation cost upwards, often due to higher demand for services and local economic factors.

  1. BL1

    • Installation Cost: From £2,800

    • Labour Rates: £35-£45 per hour

  2. BL3

    • Installation Cost: From £2,700

    • Labour Rates: £30-£40 per hour

Disposal of the old system and labour for the installation of new boilers are typically included in these prices. However, the final new boiler cost can rise significantly if additional work such as extensive pipework is required.

Least Expensive Bolton Postcodes:

Costs in these areas are generally lower, which may be attributed to a variety of factors, including the availability of competitive local tradespeople and fewer infrastructural challenges.

  1. BL6

    • Installation Cost: From £2,000

    • Labour Rates: £25-£35 per hour

  2. BL7

    • Installation Cost: From £1,900

    • Labour Rates: £20-£30 per hour

Variations notwithstanding, homeowners can look for boiler grants to subsidise expenses or use a boiler installation cost calculator online to get tailored estimates. The mentioned figures represent an average; individual cases may diverge. Furthermore, investing in a condensing boiler, be it a system or a conventional type, might offer long-term savings despite a higher initial outlay due to their increased efficiency.

Bolton Boiler Installation Average Costs per UK Region vs National Average

In Bolton, the average cost for a gas boiler installation is notable when compared to the national figures. Installation prices for a combi boiler generally fall within the £2,400 + VAT region. The cost often fluctuates depending on factors such as brand, warranty, and regional labour charges.

Across the UK, variances in installation expenses are apparent. In the South East and London, average costs can ascend notably, sometimes reaching even higher figures due to increased living expenses. Northern regions, including Bolton, typically present more economical options, closely aligning with or sometimes falling below the national average.

The following represents a simplified breakdown:

  • South East & London: £1,600 - £2,500 (Combi Boiler Installation)

  • North England & Bolton: £1,500 - £2,200 (Combi Boiler Installation)

  • Midlands: £1,700 - £2,200 (System Boiler Installation)

  • Scotland: £1,900 - £2,400 (System Boiler Installation)

Nationally, homeowners can expect to invest £1,600 - £2,500 for a standard combi boiler installation, whereas system boilers may slightly increase the financial commitment to the bracket of £1,900 - £2,200, encompassing both the boiler and installation costs.

These figures serve as a guide. Homeowners should obtain quotes and consider the specifics of their situation, including boiler type and property characteristics. Accurate, itemised estimates ultimately ensure more predictable costs and financial planning.

Planning Your Boiler Installation

Embarking on a boiler installation is an efficient way to boost your home’s energy performance and reduce energy bills. The process requires careful consideration to select the most suitable boiler, calculate your specific needs, and choose an optimal location for installation.

Selecting the Right Boiler

When choosing a boiler, homeowners should consider boiler brands known for reliability and energy efficiency. It’s imperative to research boiler manufacturers and find one that offers a robust boiler warranty. Boiler fuel types—be it gas, oil, or alternative fuels—also play a significant role in future running costs and should be aligned with the homeowner's access to fuel sources.

Calculating Size and Efficiency Needs

To ensure maximum cost-effectiveness, the boiler size should match the home's heating and hot water demand. An efficient boiler, ideally with a high efficiency rating, is crucial for keeping energy bills low. Heating engineers can evaluate the number of radiators and the presence of a hot water cylinder or cold water storage tank to recommend an appropriately sized boiler, whether it's a heat-only, system, or combi boiler.

  • Heat-only boilers require a separate hot water cylinder and cold water storage tank.

  • Combi boilers provide hot water on demand without the need for a cylinder, making them cost-efficient with potentially lower combi boiler costs.

  • System boilers work with a cylinder for hot water storage but don't need a cold water tank.

Choosing a Suitable Location

Determining where to install a new boiler is as crucial as selecting the boiler itself. Ideal boiler locations are usually near water and gas supply lines to minimise additional piping and potential complexities. Regular boilers may require more space due to their hot water cylinder and cold water storage tank, whereas combi boilers are typically more compact. The selected location should also allow for safe operation, easy maintenance, and adheres to building regulations.

Understanding the Installation Process

Selecting a reputable and Gas Safe registered engineer is pivotal; they will ensure that the installation complies with local regulations and safety standards. The costs involved may vary, but understanding each step can help manage expectations.

Initial Assessments and Preparations

Before fitting a boiler, an engineer will conduct an initial assessment to determine the specific needs of the property. This includes examining the existing heating system and deciding whether a direct replacement or a boiler conversion is more suitable. Factors such as the size of the property, the number of radiators, and water pressure are crucial considerations.

  • Type of Installation: Direct Replacement / Conversion

  • Factors Considered:

    • Property Size

    • Radiator Count

    • Water Pressure Level

Preparatory work may involve arranging for the safe removal and disposal of the old boiler, along with ensuring that the new boiler's location adheres to all safety and building codes.

The Steps of Installing a Boiler

The actual process of installing a boiler typically unfolds in several key steps:

  1. Removal of the Old Boiler: The first task is safely removing the old system, which must be done with care to prevent damage and ensure environmental disposal regulations are met.

  2. Installation of the New Boiler: A combination boiler, known for its efficiency in both heating and hot water provision, is installed. Placement must respect ventilation and pipe access.

  3. Connection to the Current Heating System: The central heating engineer meticulously connects the new boiler to the existing system. This step involves precise work with pipes and possibly electrical components, depending on the system.

  4. Testing: Once connected, the system is extensively tested. This includes checking for leaks, ensuring correct pressure levels, and verifying functionality.

Throughout the process, the central heating engineer adheres to strict safety protocols and quality standards, ensuring that each new system is fitted competently and in line with the latest industry practices.

Post-Installation Checks

Post-installation, the engineer will perform a series of checks to ensure the new boiler operates effectively:

  • System Tests: These include pressure checks and temperature assessments to guarantee that the boiler operates within the designated parameters.

  • Safety Inspections: The engineer inspects the installation for compliance with gas safety regulations and checks for any potential hazards.

Documentation of the work done, including certifications and warranties, will also be provided, detailing the cost of installation and aftercare instructions. At this point, customers are briefed on how to operate their new boiler and are informed of any maintenance it may require.

Maintaining Your Boiler Post-Installation

Once your boiler is installed, maintaining its efficiency and longevity is paramount. Attending to routine checks and swiftly addressing issues are key to ensuring safe, consistent heating and hot water.

Routine Checks and Maintenance

Conducting regular maintenance checks ensures the safety and efficiency of your boiler. Homeowners should perform these checks at least annually:

  • Visual Inspections: Confirm no signs of corrosion or leaks.

  • Pressure Checks: The boiler's pressure gauge should read between 1.0 and 1.5 bar. Deviations signal a need for repressurisation or bleed-off.

For more thorough servicing, enlist a Gas Safe registered engineer. They will inspect, clean, and test components to prevent:

  • Sludge Buildup: They may flush the system, clearing any sludge or debris, averting reduced efficacy.

  • Rust Formation: Annual servicing helps spot and address early signs of rust, protecting the system's integrity.

Identifying Common Issues

Stay vigilant for common boiler issues that can compromise central heating performance:

  • Inconsistent heating: Partially heated radiators might imply sludge presence.

  • Strange noises: Kettling, caused by limescale or sludge, needs urgent attention.

  • Boiler shutdowns: Frequent restarts may suggest electrical complications, possibly within the immersion heater.

Address these issues promptly to mitigate further damage and maintain optimal boiler operation.

Understanding Your Boiler Warranty

Most boiler warranties span several years. However, their validity often hinges on adherence to specific provisions:

  • Annual Service: You must uphold prescribed annual service checks.

  • Accredited Engineers: Employ only certified engineers for servicing and repairs.

  • Registered Installation: Ensure installation by a Gas Safe registered technician for warranty commencement.

Scrutinise the warranty terms, noting responsibility bifurcations between manufacturer defects and homeowner neglect-related incidents.

Upgrading and Replacing an Existing Boiler

When considering an upgrade or replacement of an existing boiler in Bolton, key considerations include the type of boiler that is most suitable and the specific costs involved.

Decision Factors for Replacement

Homeowners ponder over replacing their boiler for reasons such as improved efficiency or due to existing unit failures. The decision to replace a boiler typically hinges on:

  • Boiler Age: If a boiler surpasses its average lifespan (commonly around 15 years), it may be prudent to consider an upgrade.

  • Repair Costs: Hefty repair costs might tip the scales towards investing in a new, more reliable system.

  • Energy Efficiency: Modern boilers, specifically condensing models, are significantly more energy-efficient.

  • Performance: Persisting issues such as uneven heating could be a sign that the boiler is losing its efficacy.

When deciding on a replacement, the boiler prices in Bolton vary; a new combi boiler cost typically starts from around £2,125, but this can fluctuate depending on the make and kW size of the chosen boiler.

Conversion from Other Boiler Types

Boiler conversions, particularly from back boilers or conventional boilers to combi systems, are a growing trend due to the space-saving and efficiency gains that combi boilers offer. The conversion process includes removal of the old heat only boiler and hot water storage tank, and installation of a new compact combi boiler which provides both heating and hot water on-demand. A back boiler to combi conversion cost can be significant, but must be weighed against long-term savings on energy bills.

The boiler installation process adheres to the following steps:

  1. Remove the existing boiler.

  2. Install the new boiler, integrating it into the current heating system.

  3. Thorough testing to ensure the new boiler functions properly.

Switching to a contemporary, energy-efficient boiler model can also contribute to a potential yearly saving of up to £800 on energy costs, referring to the efficiency of modern A-rated boilers compared to older models. A gas boiler conversion generally necessitates a registered gas safe engineer due to the complexity and safety requirements involved.

Financial Incentives and Support

Navigating the landscape of financial incentives for boiler installation can yield significant savings for homeowners. Attention to detail in understanding the available schemes and offers ensures informed decision-making.

Government Grants and Schemes

In the UK, residents might take advantage of governmental initiatives to economically shoulder the transition to more sustainable heating solutions. Important amongst these, the Boiler Upgrade Scheme has been pivotal. Boiler grants of up to £7,500 have been allotted to encourage the installation of low-carbon heating systems, such as heat pumps and biomass boilers. It is important to note that not only newly commissioned systems post-1 April 2022 could benefit, but homeowners must also be mindful of deadlines, with previous iterations of the scheme concluding on 31 October 2022.

  • Air Source Heat Pump: Grant of £7,500

  • Ground Source Heat Pump: Grant of £7,500

  • Biomass Boiler: Grant of £5,000

These grants, aimed at reducing the country’s carbon footprint, are a substantial boon. However, as policies evolve, it's advisable for potential applicants to verify the current status of these grants.

Manufacturer Offers and Warranties

Manufacturers might independently offer incentives to influence a homeowner’s choice of boiler system. These incentives often come in the form of price reductions, extended boiler warranty periods, or bundled services. A boiler warranty typically provides assurance against defects for a certain period following installation, which varies between manufacturers.

  • Price Offers: Discounts on upfront costs

  • Extended Warranty: Protection spanning multiple years

Perusing manufacturer warranties is essential, as they can significantly affect long-term satisfaction and peace of mind. Extra incentives like free annual servicing or parts could also be part of the package, though the specifics vary by manufacturer and should be scrutinised carefully.


In Bolton, the investment in a new boiler installation is both a practical upgrade for home heating systems and a valuation consideration. Key manufacturers, such as Vaillant, Worcester Bosch, and Glow-Worm, are offering high-efficiency solutions equipped with advanced heat exchangers and designed to operate optimally at mains pressure.

The costs associated reflect the sophistication of technology and installation complexity. Residents can anticipate:

  • New boiler installation: Between £1,500 - £3,500, varying by boiler type and brand.

  • Vaillant boilers: Recognised for integrating smart home technology and efficient performance.

  • Worcester Bosch: Offering durability and customer satisfaction with cost-effective operation.

  • Glow-Worm: A budget-friendly choice known for reliability and ease of use.

Furthermore, the movement towards high-efficiency boilers is not just an economic decision; it is a stride towards sustainability, reducing carbon footprint and energy bills alike. With proper installation, residents benefit from consistent heating and hot water supply, contributing to a comfortable home environment.

Ultimately, the selection of a boiler involves balancing upfront costs against long-term savings and efficiency. It is essential for homeowners to engage with reputable professionals for installation to ensure safety, warranty validation, and optimal performance standards. The boiler installation process in Bolton is an investment that demands careful consideration, but when done correctly, it delivers seamless warmth and energy efficiency that bolsters the value of any property.

Glossary of Boiler Installation Terms

  • Combination (Combi) Boiler: An efficient unit that combines central heating and hot water production in a single compact system. Installation costs range from £1,500 to £3,500.

  • System Boiler: Suitable for homes with multiple bathrooms, requiring a separate cylinder for storing hot water. Typically installed at a cost of £1,800 to £3,500.

  • Biomass Boiler: A boiler type that uses organic materials as fuel, presenting an eco-friendly option. Installation costs are variable, depending on the system's complexity.

  • Heat-only Boiler: Also known as a conventional boiler, they require a cold water tank and hot water cylinder. Prices for installation can vary widely.

  • Condensing Boiler: A modern boiler type designed to utilise more energy from the same amount of fuel as non-condensing boilers by recovering heat from exhaust gases.

  • Flue: A duct or opening that conveys exhaust gases from the boiler to the outdoors. It's critical for safety and must comply with legal regulations.

  • Powerflush: A cleaning process which removes sludge, rust, and debris from the heating system, often recommended before installing a new boiler.


At iHeat all of our subcontracted engineers are Gas Safe registered and can service your boiler swiftly and safely. Prices of an expert boiler service with iHeat start from £99.These figures might fluctuate regionally and can also depend on the specific type of boiler you own, such as a combi, gas, or oil boiler. 

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iHeat New Boiler Costs

Boilers can be a daunting purchase for many people as they’re an appliance with a lot of responsibility, providing heat for you and your family is something you want to get right. Boilers aren’t exactly a quickly disposable item either, potentially lasting you a decade.

Effectively, new boiler cost can be split into two segments: the first is the actual boiler itself (unit price), and the second is the cost of the boiler being installed (set up) in your property by an expert engineer. 

Here at iHeat, we want to remove all of this undue stress and make the decision making process of upgrading to a new central heating system, as easy as possible.

Boiler costs can vary depending on a number of factors including their brand, model, fuel, output, warranty, labour and installation type. Typically a new boiler will cost between £1,845 and £3,500, below is a list of average boiler installations offered by iHeat (guide only).

Installation Type

Price (inc VAT)

Combi to combi swap


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System to combi conversion


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New boiler install


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Back boiler to a combi


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System to system


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Frequently Asked Questions

How much does it cost to get a boiler fitted in Bolton?

Within Bolton, the expense of fitting a boiler may vary, factoring in the type of boiler and the specificities of the property. A standard boiler installation is reported to range from £1,500 to £3,000, influenced by the boiler model and the complexity of the installation.

How much does it cost to install a boiler system in Bolton?

For a complete boiler system installation in Bolton, costs can escalate due to additional components and labour. It's anticipated that such an extensive installation could fall within the bracket of £2,000 to £7,500, with variations stemming from the chosen fuel source and the boiler's planned location.

What is the average labour cost for fitting a replacement Bolton boiler?

The labour associated with replacing an existing boiler in Bolton typically varies from £2,000 to £7,500. This figure encompasses the diverse tasks a heating engineer must undertake and is subject to the intricacies of the job and regional cost differences.

What is the average cost of a boiler service in the UK?

Across the UK, a boiler service can be procured for an average cost of approximately £80 to £120, though this range may slightly differ based on local market rates and the level of service your boiler requires.

How much does labour cost to install a boiler in the UK?

Labour costs for boiler installation across the UK may range from £300 to £500, with variations largely depending on geographical location, the complexity of the job, and whether it involves a straightforward boiler swap or repositioning.

What is a new boiler installation process?

The process of new boiler installation generally consists of a series of steps: firstly, removal of the old unit is performed, succeeded by the installation of the new boiler which is then connected to the existing heating system. Finally, comprehensive testing is conducted to ensure that the boiler is functioning seamlessly.

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Article by
Stephen Day | Co-founder
Gas Safe registered and FGAS certified engineer with over 20 years experience in the heating and cooling industry.