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Last updated: 5th April, 2024


Boiler Installation Liverpool

Boiler Installation Liverpool

Key takeaways

  • Understanding boiler types and installation costs is essential for Liverpool homeowners.
  • Compliance with legal and safety requirements ensures efficient and safe boiler operation.
  • Post-installation maintenance is key to prolonging the life of the new boiler.

Types of Boilers There are three primary boiler types to consider for a home in Liverpool: combi (combination) boilers, system boilers, and regular (conventional) boilers.

In 2024, Liverpool residents considering boiler installation face an array of options and considerations. With the ever-evolving technology and varying types of boilerscombi, system, and heat only—the process can seem daunting. 

It's essential to grasp not only the types of boilers available but also the financial implications of such an investment. Installation costs can fluctuate based on boiler type, property size, and whether it's a straightforward replacement or an entirely new installation.

Navigating the legal and safety requirements is another critical facet. Liverpool homeowners must adhere to UK regulations, ensuring their chosen Gas Safe registered installer meets rigorous standards. 

This peace of mind is crucial, as proper installation and compliance not only guarantees safety but also optimises the boiler's efficiency and lifespan. Post-installation, the focus shifts towards maintaining the new system, which includes periodic checks and understanding the warranty and support offered by the installer or manufacturer.

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Understanding Boiler Installation:

Navigating the landscape of boiler installation encompasses understanding various types of boilers, their efficiency and performance, and selecting a reputable brand for your home's heating system.

Types of Boilers

There are three primary boiler types to consider for a home in Liverpool: combi (combination) boilers, system boilers, and regular (conventional) boilers. Combi boilers are a high-efficiency water heater and a central heating boiler, combined within one compact unit, thus saving space. System boilers require a cylinder for storing hot water, but the major heating and hot water system components are built into the boiler itself, making it quicker and easier to install. Lastly, regular boilers have a separate hot water cylinder and cold water storage tank, supporting homes with traditional heating systems.

  • Combi Boiler: Heats water instantaneously from the mains when a tap is turned on.

  • System Boiler: Needs a hot water cylinder but no tanks in the roof space.

  • Regular Boiler: Feeds a hot water cylinder with a cold water tank usually in the attic.

Boiler Efficiency and Performance

Efficiency is a critical metric for boilers, directly affecting energy consumption and heating bills. New boilers are required to be condensing boilers, which have a larger heat exchanger, so they recover more heat, send cooler gases up the flue and are more efficient. Seasonal efficiency of domestic boilers in the UK is specified by SAP winter efficiency figures, where a high percentage indicates a high-efficiency boiler. For instance, modern condensing boilers have efficiencies of over 90%, significantly higher than older models.

  • Condensing Boiler: Over 90% efficient.

  • Non-condensing Boiler: Usually 55% to 78% efficient.

Selecting the Right Boiler Brand

Choosing a reliable boiler brand is pivotal. Renowned boiler manufacturers like Worcester Bosch, Viessmann, Ideal, Vaillant, and Baxi offer a variety of models to suit different needs and budgets. For example, a 24kW Worcester Bosch combi boiler might be a fitting choice for an average-sized Liverpool home. Brands differ not only in cost but also in warranty periods, customer service, and the availability of spare parts. It’s essential to consider all facets when investing in a new boiler.

  • Worcester Bosch: Known for high-quality and efficiency, offering up to 10-year guarantees.

  • Viessmann: Offers cutting-edge technology and is recognised for its long-term reliability.

  • Ideal: Popular in the UK for a combination of performance and value for money.

  • Vaillant: A reputable brand with a wide range of eco-friendly options.

  • Baxi: Well-established with a reputation for dependable, budget-friendly boilers.

Preparing for Boiler Installation

Ready to upgrade your home heating system in Liverpool? Understand the essentials of home assessment, choosing the right boiler for your space, and the financial considerations to make an informed decision.

Home Assessment Process

A thorough home assessment by a Gas Safe registered engineer is the initial step towards a new boiler installation. During this process, they evaluate your home's heating requirements, inspecting existing pipework and boiler location to ensure that the new system will integrate seamlessly. This step is crucial in determining the heat-only boiler, combi boiler, or system boiler that will suit your home's needs.

Boiler Size and Location Considerations

Selecting the appropriate boiler size is vital for optimal energy efficiency. A boiler size calculator may be used to estimate your home's heating and hot water needs. Key considerations include the number of radiators, the presence of hot water cylinders, and mains pressure. As far as the boiler location goes, it should be accessible for maintenance and comply with safety regulations. Decisions made here could influence whether extensive pipework modifications are needed.

Quotation and Costs Explained

Obtaining multiple quotes allows you to understand the prices and installation costs involved. A detailed quotation should break down the cost of installation, including the boiler cost, labour costs, and any extras such as additional pipes or conversions. As of 2024, a new boiler cost in Liverpool might range from £2,500 for a basic combi boiler to upwards of £5,000 for an advanced condensing boiler. Remember, the installation expenses can vary significantly based on the complexity of the installation and the chosen boiler model.

When installing a boiler in Liverpool, safety and legal considerations are paramount. They ensure the system's integrity and compliance with national standards.

Gas Safe Regulations

It is a legal requirement that any individual or company carrying out gas work in the United Kingdom is on the Gas Safe Register. To comply, engineers must demonstrate competent handling of gas appliances, ensuring that installations and repairs meet stringent safety standards. Homeowners must verify their gas engineer's Gas Safe credentials, which includes a unique licence number and a photo ID, before allowing any work to proceed.

  • Checklist: Gas Safe Regulations

    • Engineer's Gas Safe Register ID checked

    • Confirmation of licence number validity

    • Ensure engineer is certified for specific gas work

Building Regulations and Compliance

Building regulations in the UK are designed to ensure that installations are energy efficient and safe. Compliance with these rules is not merely procedural; it safeguards residents and properties. Part L of the building regulations, which deals with energy efficiency, must be adhered to when replacing a boiler. Certified engineers have the responsibility to notify the local authorities of the new boiler installation - a process often facilitated by their Gas Safe registration.

Installation must involve:

  • A condensing boiler, where possible.

  • Proper ventilation and flues for gas boiler safety.

  • Control devices to enhance energy efficiency.

After installation, the engineer should issue a Building Regulations Compliance Certificate and homeowners can apply for government grants available for energy-efficient retrofits. Non-compliance can attract substantial penalties and might hinder future property transactions.

Liverpool Boiler Installation in-depth Prices Breakdown:

When assessing the cost of boiler installation in Liverpool, multiple elements come into play. Prices are influenced not only by the boiler model but also by its size, type, and the complexity of the installation process itself.

Factors Influencing Cost:

  • Boiler Type: Combi boilers, for instance, are often more economical.

  • Boiler Size & Output: Higher kW output usually spells higher costs.

  • Installation Complexity: Homes requiring additional piping or extensive work see steeper prices.

A detailed look at potential costs:

  1. Standard Combi Boiler: From £2,000

  2. Complex Installations: Upwards of £4,000

Additional Elements:

  • Location: Accessibility and regional price variations can affect the final quote.

  • Additional Components: Items like thermostats or specialised valves may incur extra charges.

Remember, these figures only provide a general guideline; each installation demands its own bespoke quote from certified professionals.

Liverpool Combi Boiler Installation Average Costs

When considering the installation of a combi boiler in Liverpool during 2024, the costs can vary significantly depending on the area's postcode.

Most Expensive Liverpool Postcodes

In Liverpool, certain postcodes are associated with higher installation costs due to factors like parking availability for installers, congestion, and the type of properties present. Typically, postcodes within the city centre, such as L1, L2, and the docklands area L3, may incur additional costs. These areas might see figures reaching towards the higher end of the average cost bracket, which might exceed £2,500.

Least Expensive Liverpool Postcodes

Conversely, suburban and outlying areas tend to feature lower installation costs. Postcodes like L20 (Bootle), L28 (Stockbridge Village), or L36 (Huyton) can expect more competitive pricing due to easier access and lower overheads for installers. Residents in these areas might find combi boiler installations available around £2,000 to £2,300, making it slightly more affordable than the city's average.

Liverpool System & Heat Only Boiler Installation Averages

In 2024, Liverpool's costs for system and heat-only boiler installations present noticeable variation, heavily influenced by location within the city. Homeowners can expect distinct price discrepancies based on their postcode area.

Most Expensive and Least Expensive Liverpool Postcodes

Differences in installation costs across Liverpool postcodes can be substantial. The table below exemplifies the average installation expense homeowners might incur.

Liverpool Postcode Area

Installation Cost Range (£)

L1 (City Centre)

£2,500 - £3,200

L8 (Toxteth)

£2,400 - £3,000

L17 (Aigburth)

£2,600 - £3,300

L25 (Woolton)

£2,800 - £3,500

L36 (Huyton)

£2,300 - £3,000

L37 (Formby)

£1,900 - £2,600

The price bands illustrate that areas like Woolton (L25) sit at the upper end of the spectrum, while Formby (L37) emerges as a more budget-friendly locale for installations. Areas such as the bustling city centre (L1) show competitiveness in pricing, likely due to higher concentration of service providers.

Boiler Installation Average Costs per UK Region vs National Average

When exploring the average costs of boiler installations across different UK regions in 2024, it is evident the price range varies.

In the North West, where Liverpool is situated, customers may incur costs approximately £1,500 to £2,000 for standard combi boiler installations. British Gas and other national companies may provide competitive yet slightly higher rates due to additional services they offer, including longstanding boiler warranties and comprehensive aftercare.

In contrast, boiler installation in London often commands higher prices, with averages between £2,000 and £2,500 due to the regional cost of living and labour. The South West and Wales enjoy prices similar to Liverpool, reflecting a cost-effective market for consumers.

Meanwhile, the national average cost for a basic system boiler with a 5-year warranty is around £1,600, escalating to £2,500 for high-end models, inclusive of supply and installation. Boiler replacement costs without location changes are slightly more economical.

Here's a snapshot of costs:


Average Installation Cost

Liverpool (NW)

£1,500 - £2,000


£2,000 - £2,500

South West & Wales

£1,500 - £2,000

National Average

£1,600 - £2,500

Finance options, such as those from Heatable, provide flexibility in managing these expenses. Moreover, some residents may qualify for government grants, easing the financial burden of boiler installation.

It's paramount for potential buyers to consider not just the upfront cost but also the boiler warranty and the transparency of future servicing expenses. The thorough evaluation of financing options and warranty terms from different providers, including region-specific companies and larger entities like British Gas, can significantly impact long-term satisfaction and cost-effectiveness.

The Installation Process

Installing a new boiler in Liverpool is a significant investment. Successful installation relies on the expertise of Gas Safe registered heating engineers and adherence to precise steps to ensure efficiency and safety.

Step-by-Step Installation Overview

  1. Initial Assessment: A heating engineer visits the property to determine the optimal boiler size and type, based on space, usage needs, and existing pipework.

  2. Quotation: The engineer provides a detailed quote, including the cost for the boiler, additional components, and labour.

  3. Removal: Safely disconnecting and removing the old boiler and any obsolete storage tanks.

  4. Pipework Modification: Altering existing pipework as required for the new system, ensuring compatibility and efficiency.

  5. New Boiler Installation: Positioning and securing the new boiler to the wall or floor, depending on the design.

  6. Gas Connection: Ensuring a secure connection to the gas network, meeting all regulatory standards.

  7. System Check and Power Flush: Testing the connections and conducting a power flush to clear debris within the system, which can protect and enhance the boiler's performance.

  8. Installing Additional Components: Including magnetic filters to capture debris and protect the boiler long-term.

  9. Chemical flush: To eradicate any remaining impurities, promoting a clean system.

  10. Final Testing: A comprehensive check to ensure the boiler operates at optimal water pressure and efficiency.

Additional Component Installations

Magnetic Filters: Vital for protecting the boiler from metal debris, these filters are a staple in prolonging a boiler's lifecycle.

  • Placement: Typically installed close to the boiler, allowing for easy access during maintenance.

  • Advantages: They help to maintain water pressure and efficiency over time, reducing the risk of damage and blockages.

Water Storage Tanks: If the chosen boiler system requires it, new water storage tanks ensure a steady supply and consistent water pressure.

  • Installation: Fitted in a suitable position, typically in the loft or airing cupboard, depending on the property's design.

  • Function: They regulate water supply to the boiler and maintain the required pressure for the heating system to function accurately.

Each component is integral to the overall operation of the boiler and, consequently, to the heating system's performance. Hence, their installation is carried out with precision, ensuring they align with the manufacturer's specifications and building regulations.

Post-Installation Checks and Customer Service

After the installation of a new boiler in Liverpool, post-installation checks are critical for ensuring the safety and efficiency of the unit. Installers conduct a series of assessments, testing for gas leaks, checking pressure levels, and ensuring all components function correctly. They rigorously examine the system, observing it operates seamlessly — a key step in securing long-term reliability.

Customer service plays a pivotal role before, during, and after installation. Dependable boiler installers provide clear instructions on how the new boiler operates and how homeowners can maintain its efficiency — crucial for optimising energy bills. The installer should offer a walkthrough on managing the new system, emphasising:

  • The thermostat settings

  • Boiler pressure

  • System reset procedures

Post-installation, reputable companies maintain contact, offering services covering:

  • Annual Maintenance: To keep the boiler in top condition

  • Customer Support: For any queries or issues that arise post-installation

Checklist Item


System Pressure

Ensure the system meets operational requirements

Safety Valve Assessment

Confirm the safety components function effectively

Thermostat Operation

Verify temperature control is accurate

Gas/Water Leak Examination

Detect and rectify any immediate installation issues

Efficient customer service will seamlessly address any concerns, ensuring that clients feel supported in the transition to their new boiler. Follow-ups are customary, reinforcing confidence in the service provided. A dedicated contact point for troubleshooting contributes to peace of mind and sustained customer satisfaction.

Maintaining Your New Boiler

Regular maintenance of your new boiler can lead to significant energy savings and prolong its lifespan. Tailoring a maintenance schedule ensures efficient operation and may help to detect issues before they turn into costly repairs.

Routine Maintenance

It's paramount to schedule annual check-ups for your boiler to ensure its efficient operation. These should include:

  • Inspection of the boiler and controls to make sure they're working properly

  • Checking for any signs of corrosion or leakage

  • Ensuring the pressure settings are correct

  • Flushing out any sludge or debris that could be affecting performance

  • Verifying the integrity of the flue

A Gas Safe registered engineer is the right professional to carry out these crucial tasks.

Upgrade Opportunities

Advancements in technology may present opportunities to upgrade your boiler system, offering better energy efficiency and control. Smart thermostats, for example, are revolutionising how homeowners manage their heating:

  • Smart Thermostats: This upgrade can learn your schedule and adjust heating accordingly. By doing so, they can provide considerable energy savings and precise temperature control.

  • Boiler Modulation: Some modern boilers can modulate their performance based on the demand, thus preventing excessive energy consumption.

Understanding Boiler Warranties

Warranties are indispensable, providing peace of mind and protection from unexpected repair costs. Here's what to consider:

  • Length of Warranty: Newly installed boilers typically come with a manufacturer's warranty lasting from 1 to 10 years.

  • Coverage Details: Ensure you understand what the warranty covers, which often includes parts and labour.

  • Regular Servicing: Some warranties require an annual service done by a certified professional to remain valid, so don’t overlook this.


Selecting the appropriate boiler and installation service in Liverpool mandates careful consideration of multiple factors. Primarily, energy efficiency is paramount, directly impacting long-term savings. Modern condensing boilers are designed to convert more gas into usable heat, reducing waste and heating costs.

Costs are varied. For a 24kW combi gas boiler from a recognised brand like Worcester Bosch, estimates suggest expenditures around £2,500, inclusive of both the unit and installation charges. This scenario presumes a local Gas Safe installer is employed, noting that national firms may incur higher expenses.

Boiler Type

Average Cost Range (incl. Installation)

Gas Combi Boiler


Gas System Boiler

£1,300 - £3,500

New Oil System Boiler


Basic System Boiler


High-end System Boiler


Assessment and choice of a service provider are critical. Local Gas Safe certified engineers are generally recommended for their familiarity with regional installations and potentially more competitive rates. Quality of service is an aspect that should not be compromised. Reliable customer service ensures a smooth installation process and offers valuable post-installation support.

When planning for a boiler installation, they should consider not just the upfront costs, but also the expertise and customer support offered by the installation company. Efficient, correctly installed systems lead to fewer future breakdowns, fostering greater peace of mind.

iHeat Boiler Installation Liverpool

iHeat quotes are completely free, fixed-price, and fully carried out online. The reason we opt for this streamlined process of online quotes is to remove the need for potentially time consuming and progress delaying on-site location assessments when trying to get a new boiler.

iHeat’s quotes are fixed-price to assure customers we are completely transparent in our practices and want to keep them as fully informed as possible during their boiler installation process.

The time frame for iHeat boiler installation usually depends on several factors specific to each unique case, such as:

  • Property type

  • Property location

  • Boiler type (combi, system or heat-only)

  • Conversion or installation

Where possible, iHeat can have your brand new boiler installed and up and running as fast as the next day.

We understand that a boiler is a necessity in any household, therefore aim to complete your installation as fast as possible for you, while still maintaining safety.

iHeat has already revolutionised the heating industry, transforming it from a laborious task that could potentially take weeks into as simple as click, pick and relax.

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


Get a quote

System to combi conversion


Get a quote

New boiler install


Get a quote

Back boiler to a combi


Get a quote

System to system


Get a quote

Frequently Asked Questions

What is the average cost to install a boiler?

The average cost of installing a new boiler in the UK typically ranges from £2,000 to £5,000. This figure accounts for the boiler's cost along with the expenses of labour and materials needed for installation.

How much does a boiler cost in Liverpool?

For Liverpool homeowners, a standard 24kW combi gas boiler installation is estimated to cost around £2,500. This price generally includes the boiler and the installation fees by a local Gas Safe installer.

What factors influence the labour costs involved in fitting a boiler in Liverpool?

Labour costs for boiler installation in Liverpool are influenced by the complexity of the job, the type of boiler, the fuel source and the location of the boiler within the home. Additional costs may arise if the installation requires significant modifications or new pipework.

How do boiler replacement schemes in Liverpool operate?

Boiler replacement schemes in Liverpool often offer subsidies or financial assistance to replace old and inefficient boilers. These are typically aimed at reducing energy consumption and helping residents save on heating bills, but eligibility and the operation of these schemes can vary and should be checked for up-to-date information.

What is the price range for Worcester Bosch boiler installations in Liverpool for 2024?

The cost of installing a Worcester Bosch combi gas boiler in an average-sized home in Liverpool is about £2,500 including the boiler and the installation service from a certified professional.

What are the estimated servicing charges for boilers in Liverpool currently?

Servicing charges for boilers in Liverpool may vary; however, routine boiler servicing to ensure safe and efficient operation is less expensive than repairs or replacements due to negligence. Homeowners can expect to pay a standard fee for annual service checks.

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