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Last updated: 3rd May, 2024


Oil Boiler Ban

Oil Boiler Ban

Key takeaways

  • The UK's ban on new oil boilers starting in 2026 is driving a shift towards greener heating alternatives.
  • Homeowners are provided with financial incentives to support the transition to more efficient and sustainable heating systems.
  • The oil boiler ban represents both a legislative change and a cultural shift towards environmentally conscious energy consumption.

As preparation steps up for the transition from oil boilers, homeowners confront a multifaceted situation that entails legislative comprehension, financial planning, and adopting new cultural norms around home heating.

Within the UK energy sector, one of the most substantive changes is the anticipated ban on new oil boilers—a move that signals the government's commitment to greener alternatives.

From 2026, new installations of oil boilers will be prohibited in an effort to decrease carbon emissions and tackle climate change. This decisive action is part of a broader strategy to move away from fossil fuels and comes amid growing concerns about the environmental impact of home heating solutions. 

The transition is set to affect a notable proportion of households that are dependent on oil boilers, predominantly in rural areas where connection to the mains gas grid is not feasible.

Navigating through the legislations and government policies surrounding the oil boiler ban requires homeowners to be well-informed. It's imperative to understand the implications for those currently relying on such systems, as well as the alternatives being promoted. 

While gas boilers emerge as a prominent replacement option due to their efficiency and lower carbon footprint, a range of other sustainable alternatives are also being considered. Financial support and incentives being offered in 2024 seek to alleviate the burden of this transition on homeowners, making the adoption of green energy resources more accessible.

As preparation steps up for the transition from oil boilers, homeowners confront a multifaceted situation that entails legislative comprehension, financial planning, and adopting new cultural norms around home heating. The changes highlight a significant shift in the UK's approach to domestic energy production and consumption, influencing both the energy industry and the behaviours of individual consumers.

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Overview of the Oil Boiler Ban:

With a decisive move towards net zero carbon emissions by 2050, the UK government lays out its strategy to phase out oil boilers. This section uncovers the motives for the ban and the critical dates as the UK transitions to greener heating solutions.

Rationale Behind the Ban

The government's case for the ban is rooted in environmental necessity. Oil boilers emit significant levels of carbon dioxide, a primary contributor to climate change. Phasing out these boilers is a part of a broader plan to slash carbon emissions across all sectors and pivot to sustainable heating systems.

Timeline and Key Milestones

2026 marks a pivotal year for the oil boiler ban, with two key dates to underscore:

  • 2025: The anticipated introduction of the Future Homes Standard could terminate the installation of oil boilers in newly built homes.

  • 2026: A proposed extension of this prohibition to all homes, curbing the purchase of replacement oil boilers.

The route to 2026 is mapped with consultations and policy refinements, ensuring a smooth transition away from oil-dependent heating systems.

Implications for Homeowners

The imminent oil boiler ban in the UK will have substantial effects on homeowners, particularly for those residing in off-grid areas and on the property market dynamics.

Impact on Off-Grid Homes

Many rural homeowners in the UK, who cannot connect to the mains gas network, rely on oil-fired boilers for heating. These individuals face the challenge of replacing their existing systems with alternative heating solutions. The Government has suggested heat pumps among other renewable heating technologies as replacements. However, these options can be costly, and not all properties are suitable for such systems. Property owners may require substantial financial investment to adhere to the new regulations.

  • Financial Costs:

    • Initial outlay for alternative heating systems: £6,000 - £18,000

    • Potential property modifications: Variable costs

  • Heating Alternatives:

    • Air source heat pumps

    • Ground source heat pumps

    • Biomass boilers

    • Solar thermal systems

Although the up-front costs are significant, these heating alternatives could reduce long-term energy expenses. It’s vital for homeowners to seek guidance from experts to navigate these complex changes.

Effects on Property Market

The prohibition of oil boilers presents a unique set of challenges and opportunities in the property market. Conveyancers and potential buyers now must consider heating systems as a critical factor in property valuation and purchase decisions. The uncertainty regarding Rishi Sunak's directions on subsidies or support mechanisms for replacing oil boilers could affect property demand and pricing, particularly in rural areas.

  • Property Valuation Factors:

    • Existing heating system type

    • Potential for retrofitting alternative solutions

    • Associated costs with transitioning to compliant heating systems

Properties with modern, efficient heating solutions could command a higher market value, while those with outdated oil boilers could face depreciation. Homeowners looking to sell may need to invest in suitable heating alternatives to maintain their property's value.

  • Considerations for Homeowners:

    • Retrofit feasibility and costs

    • Market demands for energy-efficient homes

    • Legal implications of selling a home with an oil boiler post-ban

Rishi Sunak and the government's future policies will define the landscape for homeowners, both off-grid and otherwise, and shape how the property market responds to this transformative period.

Why Gas Boilers are the Best Replacement

Gas boilers present a compelling option for heating replacement, especially given the varied types available and their efficiency improvements over older oil models.

Different Types of Boilers: combi/system/heat-only

Combi Boilers (combination) provide both heating and hot water directly from the boiler. They are compact, don't require a separate hot water cylinder, and heat water on demand, making them ideal for smaller homes where space is at a premium.

System Boilers require a cylinder for storing hot water, but they do not need a cold water tank. They are suitable for homes with multiple bathrooms, as they can provide a constant supply of hot water to several taps at the same time.

Heat-only Boilers, also known as conventional or regular boilers, require a cold water tank as well as a hot water cylinder. They are best suited for larger homes with space for tank installation and with a higher demand for hot water supply.

Benefits of New Gas Boilers

New gas boilers are equipped with technology that allows them to adjust their output to precisely match the heating demand. This results in reduced fuel consumption and a significant reduction in heating bills. According to the Energy Saving Trust, modern gas boilers can be up to 90% efficient. Additionally, gas is widely available and often cheaper than electricity on a per kWh basis, rendering new gas boilers an economically sensible choice.

Modern Gas Boiler efficiency vs oil boilers

Modern gas boilers are constructed to be much more efficient than outdated oil boilers. Specifically, the newest condensing gas boilers recover heat that would have otherwise been lost via the flue gases. A modern gas boiler's efficiency rating can be as high as A-rated 92-94%, compared to older oil boilers that may operate at an efficiency of around 70%. This significant efficiency disparity leads to lower carbon footprints for households opting for gas boilers and reduced long-term energy costs.

Other Eligible Alternatives to Oil Boilers

In anticipation of the 2025 oil boiler ban in the UK, homeowners are exploring efficient and environmentally-friendly alternatives. This section outlines three potential replacements that meet both contemporary energy standards and legislative requirements.

Air Source Heat Pumps

Air source heat pumps (ASHPs) function by extracting heat from the air outside, even when temperatures are as low as -15°C. They can significantly reduce carbon emissions when replacing traditional oil boilers. The running costs for ASHPs are subject to your home's insulation quality and will vary, but they hold the advantage of potentially lowering energy bills and are eligible for the Renewable Heat Incentive (RHI) scheme.

Initial costs: may be higher, but government incentives can help ameliorate these expenses.

Efficiency: ASHPs can deliver heat at a lower temperature over longer periods.

Ground Source Heat Pumps

Ground source heat pumps (GSHPs) harness the natural heat from underground by circulating a mixture of water and antifreeze through a loop of piping. The installation requires sufficient land for the pipework, but offers a stable and reliable heating solution.

Costs: involve initial groundwork which is pricey, but the long-term savings on energy bills and RHI benefits can offset these costs.

Maintenance: GSHP systems are robust, typically lasting 20 years with minimal maintenance.

Biomass Boilers

Biomass boilers burn natural materials such as wood pellets, chips, or logs, and can provide both heating and hot water. They are a more sustainable option compared to fossil fuels and can be a direct replacement for oil boilers.

Sustainability: Biomass is considered carbon-neutral since the carbon dioxide released during burning is roughly equal to the amount absorbed by the plants whilst growing.

Cost-effectiveness: While the initial outlay is significant, biomass boilers can be more economical than traditional heating systems in the long run, especially with the support of the RHI program.

These alternatives not only conform to the upcoming regulations but also reflect a move towards a more sustainable and eco-efficient heating paradigm. When considering these options, it is essential to assess the suitability for individual properties and consult with certified professionals to ensure compliance and maximise benefits.

Financial Support and Incentives 2024

In 2024, financial initiatives in the United Kingdom are geared to assist with the transition from oil boilers to more sustainable heating systems, providing both upfront incentives and grants to qualifying homeowners.

Affordable Warmth Obligation 2024

The Affordable Warmth Obligation in 2024 continues to play a crucial role in the UK Government's commitment to increase energy efficiency and support underprivileged households through the Energy Company Obligation scheme.

Key info

In 2024, the Affordable Warmth Obligation aims to reduce fuel poverty by providing necessary upgrades to make homes more energy-efficient. This initiative is part of the wider Energy Company Obligation (ECO4), which is a government-led scheme involving the UK's largest energy companies. Central to this obligation is its focus on offering measures like the free boiler scheme and boiler upgrade scheme, both designed to replace outdated and inefficient heating systems with low-carbon and more efficient solutions.

Who is eligible?

Eligibility for the Affordable Warmth Obligation is determined by a set of criteria centred on income, benefits, and property types. Specifically, individuals may be eligible if they:

  • Receive certain state benefits, including Universal Credit, Pension Credit, or Income Support.

  • Own their home or privately rent (permissions from landlords required for tenants).

  • Have an inefficient, faulty, or old boiler.

To confirm eligibility, interested parties must provide evidence of their benefit status and own the property where the heating system will be installed.

How to apply

To apply for the Affordable Warmth Obligation, applicants should:

  • Ensure they meet the eligibility criteria.

  • Collect necessary documentation to prove eligibility.

  • Contact an energy supplier participating in the ECO4 scheme.

It is the energy supplier that will guide through the application process and arrange a survey if the initial checks are positive. The supplier can clarify the detailed steps and documentation required for a successful application. Assistance may also be available from local councils or energy-efficiency advice services.

Energy Companies Obligation (ECO) 2024

In the realm of energy efficiency and support for vulnerable households, the Energy Companies Obligation for 2024 stands as a crucial government-led initiative. Its focus is to enhance heating systems and reduce energy costs for eligible parties in the UK.

Key info

ECO, in its fourth phase known as ECO4, has been set up collaboratively between the government and UK's largest energy suppliers. It aims to assist in upgrading heating systems, such as boilers, specifically for those in need. Since commencing, each iteration of ECO has brought forward modifications and enhancements, with ECO4 running until 2028, emphasising sustainability and fuel poverty alleviation.

Who is eligible?

Eligibility for the ECO scheme revolves around certain factors:

  • Homeowners or those residing in social housing may apply.

  • Residents must be recipients of qualifying benefits such as disability living allowance, child benefit, or others indicating low income or fuel poverty.

  • The property in question must possess an Energy Performance Certificate that indicates a need for energy efficiency improvement.

  • The scheme specifically targets homes with inefficient boilers.

However, not every application is guaranteed success, as the programme has set guidelines, which form the basis of an eligibility criterion that must be satisfied.

How to apply

To commence the application process for a boiler grant under ECO4, the following steps should be followed:

  • Check Your Eligibility: Ensure your circumstance aligns with the criteria set forth by the ECO scheme.

  • Gather Necessary Documents: These may include proof of occupancy, benefits, and your property's Energy Performance Certificate.

  • Contact an Approved Supplier: Major energy companies partnering with the government are equipped to process applications.

  • Assessment: The supplier will assess your boiler's efficiency and your home's overall energy needs.

  • Approval and Installation: If eligible, an upgrade or replacement will be scheduled.

Bear in mind that each energy supplier may have its process for applying, thus it's critical to communicate directly with them or through the official ECO4 support avenues.

The LA Flex Scheme 2024

The LA Flex Scheme 2024 is part of the broader Energy Company Obligation (ECO4), emphasising the transition to low carbon heating and energy efficiency for eligible households.

Key Info

Under the LA Flex Scheme, local authorities possess the authority to nominate households that might not otherwise meet the national eligibility criteria of ECO4. This scheme facilitates installations of energy-saving measures in qualifying homes, including but not limited to boiler replacements, installation of insulation, and low carbon heating systems such as heat pumps.

Eligible improvements cover a range of areas, from cavity wall insulation to loft insulation, addressing the need for more energy-efficient homes. The LA Flex Scheme recognises the essential role of heat pumps, including air source and ground source varieties, in reducing reliance on fossil fuel heating systems.

Who is Eligible?

Eligibility for the LA Flex Scheme can include households not covered by traditional benefit-related criteria. The LA Flex Scheme is open to:

  • Residents identified by local authorities as living in inefficient homes

  • Households without the means to improve their home's energy efficiency without assistance

It's important to note that eligibility is also influenced by factors such as the household's existing energy efficiency level and the occupant's income.

How to Apply

To apply for the LA Flex Scheme, one must follow these steps:

  • Contact your local authority to express your interest and enquire about your potential eligibility.

  • Submit necessary documentation as required by the local authority, which may vary depending on the household's circumstances.

  • If referred by the local authority, the energy provider will assess the property to determine the appropriate energy-saving measures.

Applicants should be aware that the scheme's approval and the subsequent steps can vary by location, given that local authorities have to discretion to operate the scheme tailored to their community's needs.

Boiler Upgrade Scheme (BUS) 2024

In 2024, the Boiler Upgrade Scheme offers grants to cover partial costs of replacing outdated fossil fuel heating systems with cleaner alternatives, like heat pumps and biomass boilers. This initiative is geared towards enhancing energy efficiency and reducing carbon footprints.

Key info

The scheme provides financial support for installations of air source heat pumps, ground source heat pumps, and biomass boilers, which are sustainable heating technologies. The grants aim to incentivise the adoption of low-carbon heating systems by offsetting the initial installation costs, thereby encouraging a shift from conventional fossil fuel systems to more eco-friendly solutions.

  • Grant Values: Up to £7,500 for both air and ground source heat pumps.

  • Not Eligible: Hybrid systems combining heat pumps with fossil fuel boilers.

  • Key Proviso: Installations must be carried out by an MCS-accredited installer to ensure quality and compliance.

Who is eligible?

Eligibility for the Boiler Upgrade Scheme is determined by specific conditions.

  • Property Type: Applicable to homes and non-domestic buildings in England and Wales.

  • Existing Heating: Only properties with existing fossil fuel heating systems qualify.

  • Installer Requirements: The installer must be MCS-accredited.

  • System Requirements: Only certain types of heating systems are eligible under the scheme.

Applicants should verify their eligibility before proceeding with installations or applications to avoid any disqualifying factors that may preclude them from receiving the grant.

How to Apply

To apply for the Boiler Upgrade Scheme, a straightforward application process must be followed:

  • Quote Acquisition: Obtain quotes for the installation from an MCS-accredited installer.

  • Installer Submission: Your chosen installer will help submit the application on your behalf, registering the project with Ofgem.

  • Grant Payment: Following approval, the grant is paid directly to the installer, reducing the total cost of installation that you must cover.

The application process has been designed to alleviate the financial burden of upgrading to a greener heating alternative, contributing to lower energy bills and a step towards achieving net-zero energy goals. Applicants should ensure they obtain all relevant quotes and confirm their chosen installer’s accreditation status before proceeding.

Financial Considerations for Schemes/Grants 2024

Navigating the financial landscape of boiler schemes and grants in 2024 requires a concise understanding of upfront costs, accessible loans, and obligations by energy companies. These programmes are crafted to alleviate the burden of replacement and upgrade costs for UK homeowners.

Upfront Costs and Savings

The Boiler Upgrade Scheme often enables homeowners to receive grants that significantly reduce the upfront cost of installing eco-friendly heating systems. For example, air source heat pumps that may cost approximately £10,000 can be subsidised to around £5,000. Energy bills are projected to decrease subsequently, yielding a long-term saving that could be as considerable as £6,700 for some households.

Interest-Free Loans and Payment Plans

To supplement grants, interest-free loans and payment plans have been developed to spread the financial load over time. These pay-monthly boiler plans are crafted to ensure the monthly outlay aligns with the expected energy bill savings, thereby preventing any undue financial strain on the homeowner.

Energy Companies Obligations

The Energy Company Obligation (ECO4) scheme obligates the larger energy firms to help low-income households improve their home's energy efficiency, which includes upgrading boilers. Other initiatives under this umbrella are the Warm Home Discount and Affordable Warmth Obligation, focusing on rebates and assistance to ensure energy costs are manageable for vulnerable demographics. Additionally, schemes like the Great British Insulation Scheme offer subsidies for home insulation, further reducing energy bills and enhancing household energy efficiency.

Regional Variances 2024

The landscape of boiler grants in 2024 shows notable differences across various regions of the UK. Property owners should pay close attention to these variances in order to understand the support available in their specific location.

Scheme Differences Across the UK

In England, the Boiler Upgrade Scheme is a primary initiative, with grants of up to £7,500 for replacing fossil-fuel heating systems with lower-carbon alternatives such as heat pumps or biomass boilers. Not all English regions offer identical grants; the details can vary depending on local council involvement and funding availability.

For example, SSE and British Gas, as part of the Energy Company Obligation (ECO4), have committed to helping vulnerable households through the upgrade of their heating systems. The ECO4 scheme is more prevalent in some areas compared to others, owing to the energy companies' varying contributions and regional energy demands.

Wales and Scotland Specifics

Wales and Scotland have introduced their own specific schemes that align with their devolved energy efficiency strategies. In Scotland, the government’s area-based schemes potentially provide additional support for energy-efficient heating systems, tailoring assistance to the colder climate and unique housing stock.

In Wales, focus is placed on driving up energy efficiency in homes, particularly in communities that are harder to heat. Welsh homeowners may have access to schemes that differ slightly in terms of eligibility criteria and the amount of funding available, reflecting the devolved government's priorities.

Northern Ireland Inclusions

The scheme coverage in Northern Ireland is distinct from the rest of the UK. Northern Irish property owners have their unique support measures which focus on combating fuel poverty and encouraging the uptake of renewable heating technologies. They must navigate a separate set of guidelines and funding levels, which are influenced by local authorities and the Northern Ireland Executive's policies on energy.

Benefits of the Scheme

The boiler upgrade scheme provides multiple benefits, ranging from environmental gains to social advantages. These initiatives are designed not only to upgrade heating systems but also to contribute to the UK's broader decarbonisation goals.

Environmental Impact

The replacement of fossil fuel heating with low carbon heating systems through the scheme significantly contributes to the reduction of carbon emissions. Heat pumps and biomass boilers, supported by the initiative, are more energy-efficient than traditional heating systems. Energy efficiency is crucial in battling climate change, making this a turning point in the UK's decarbonisation efforts.

Economic Advantages

The economic benefits for property owners are twofold. Firstly, the initial costs of installing an energy-efficient heating system can be defrayed through grants. For example, grants of up to £7,500 towards an air or ground source heat pump installation are available. Secondly, these modern heating systems can lead to lower energy bills in the long run, easing the financial burden on homeowners in England and Wales.

Social Benefits

The social implications of the scheme are profound. Improving the energy efficiency of homes can contribute to the alleviation of fuel poverty, an issue faced by many vulnerable households. By ensuring that heating systems are more efficient and affordable, the scheme supports the most disadvantaged in society, creating a healthier and more comfortable home environment.

Preparing for the Transition

Transitioning away from oil boilers is crucial for UK homeowners, particularly in light of the anticipated regulations. Effective preparation involves consulting experts, undertaking DIY endeavours, and seeking design inspiration for eco-friendly living.

Expert Advice

Consulting with industry professionals is imperative for homeowners planning the transition from oil boilers. Experts can provide tailored advice on selecting alternative heating systems that comply with UK regulations. They can offer insights into cost-effective and sustainable solutions, such as heat pumps, which are increasingly endorsed by the government.

  • Cost Analysis: Comparison of initial outlay vs long-term savings.

  • Regulatory Requirements: Understanding the legal implications and timeframe for phasing out oil boilers.

  • Sustainable Options: Profiling green energy alternatives like solar panels and biomass boilers.

Design Inspiration for Eco-friendly Homes

Designing a home with environmental considerations at the heart is an exciting endeavour. Inspiration may stem from various resources, including digital platforms and environmental design publications. Emphasising the use of natural materials, homes might incorporate:

  • Natural Light: Utilising skylights and strategically placed windows to maximise daylight.

  • Eco-friendly Materials: Choosing recycled or sustainable materials for construction and decor.

  • Thermal Efficiency: Designing layouts and selecting materials for their insulative properties, keeping homes warm without reliance on oil heating.

Legislation and Government Policies

With an engaging legislative dynamic, the UK government has been actively exploring options and implementing policies around oil boilers, aiming to address environmental concerns while considering the impact on rural households.

Current Legal Framework

In the present landscape, George Eustice, among other officials, plays a defining role, having raised concerns about the fairness of the proposed oil boiler ban to rural communities, who often lack access to mains gas. These communities could be unfairly disadvantaged, with options like heat pumps involving significant expense. Taking this into consideration, the government has put forth measures geared towards aiding the transition from oil boilers to more sustainable alternatives.

Future Policy Developments

Looking ahead, there is a palpable shift in policy indicating a stringent trajectory towards environmental sustainability. Starting from 2025, the installation of oil boilers in new-build homes will be prohibited, escalating to a more comprehensive ban on new oil boilers in all properties by the year 2035. 

However, certain developments have surfaced suggesting flexibility, with the government proposing to delay the ban on new oil boilers until 2026. This postponement could provide a much-needed respite and adjustment period for affected households. To facilitate this transition, energy suppliers may be mandated to widen the availability of renewable heating fuels, enabling conversions of existing oil boilers to operate on these greener fuels.

Additional Considerations

When the ban on oil boilers takes effect, homeowners must navigate the complexities of choosing and installing alternative heating solutions. The costs and logistics will vary, depending on the existing infrastructure and the specific requirements of each home.

Installing New Heating Solutions in Existing Homes

Homeowners must assess the suitability of their property for different heating systems, which may include electric heat pumps or biomass boilers. A key aspect is whether foundation work is necessary to support the new system, as this can significantly affect the overall cost and duration of the project. For instance, integrating a ground source heat pump could require extensive groundwork, which is disruptive and costly. In a three-bedroom house, the space and existing setup can dictate the extent of modifications needed. Careful consideration must be given to:

  • Space requirements: Will the new system fit in the current boiler's location, or is extra space needed?

  • Insulation improvements: Upgrading insulation can reduce overall heating demand and expense.

  • Costs: Different systems come with varying price tags, both for the initial outlay and ongoing energy bills.

Heating System Upgrades for New Builds

For new properties, developers have the opportunity to incorporate the most efficient and sustainable heating solutions from the ground up. These systems should comply with building regulations aimed at reducing the carbon footprint of new builds. Choosing the right heating system is critical in the design phase to ensure optimal integration. Key considerations include:

  • Infrastructure: Ensuring the building's infrastructure can accommodate the chosen heating solution without incurring excessive costs.

  • Future-proofing: Selecting a heating system that is likely to remain compliant with anticipated energy efficiency standards for the foreseeable future.

  • Design: Factoring the heating system into the home's design aesthetic and layout for seamless integration.

Researching the best options and planning thoroughly can mitigate the impact of transitioning from an oil boiler to a newer, greener alternative.

Community and Rural Impact

The impending oil boiler ban in the UK presents a significant shift for rural communities that predominantly rely on oil for heating. These areas often lack access to the gas grid, creating unique challenges and sparking initiatives for community-driven energy solutions.

Challenges for Rural Homes

For many rural homes, transitioning away from oil boilers is not simply a matter of choice but a considerable financial and logistical concern. Rural areas often find themselves disadvantaged by the lack of connection to the gas grid, compelling homeowners to seek costly alternative heating solutions. While grants are proposed to assist with this transition, they may not cover the full scope of expenses that come with the installation of new systems. This can include not only the cost of the equipment but also potentially retrofitting homes to accommodate new technologies.

  • Financial Implications: Installing low-carbon heating systems can be cost-prohibitive, with expenses potentially running into thousands of pounds.

  • Logistical Hurdles: For some properties, especially older or listed buildings, the transition may involve significant alterations to accommodate new heating infrastructure.

The implications of these changes weigh heavily on local residents, with concerns that the shift could lead to increased rates of fuel poverty, as families struggle to cover the costs of keeping their homes adequately heated.

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

Are oil boilers getting banned?

Yes, the UK government is instituting a ban on new oil boilers. Effective from 2026, this is part of a broader initiative to lower carbon emissions and encourage the adoption of more eco-friendly heating systems.

Will I be able to replace my oil boiler after 2026?

After 2026, while the installation of new oil boilers will be prohibited, there may be provisions for the replacement of existing systems under certain circumstances. However, the details of such provisions have yet to be fully outlined by the government.

Will I have to get rid of my oil boiler?

Current homeowners will not be required to discard their functioning oil boilers immediately. The ban primarily affects the installation of new oil boilers, encouraging a transition to alternative heating solutions over time.

What will replace oil boilers in the UK?

The transition from oil boilers in the UK is expected to lean towards green energy options such as heat pumps, which are more energy-efficient and have a lower environmental impact. Solar thermal systems and biomass boilers are also viable alternatives.

Will I be able to replace my oil boiler after 2025?

As with the prohibition set for 2026, the government’s regulations dictate that from 2025, new oil-fired boilers cannot be installed. This suggests that homeowners will need to explore other heating systems should they require a replacement.

Should I replace my 20-year-old oil boiler?

If an oil boiler is nearing the end of its operational life, it may be prudent for homeowners to consider upgrading to a more efficient and environmentally friendly system before the upcoming bans take effect.

How much does it cost to replace an oil boiler in the UK?

The cost of replacing an oil boiler in the UK varies depending on the model and installation specifics but typically ranges from £3,500 to £5,000. Homeowners should also account for the potential financial incentives and grants available to support the transition to greener alternatives.

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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.