Combi Boiler Prices and Government Grants: Everything You Need to Know in 2024

- Combi Boiler Prices and Government Grants
- Combi Boiler Prices
- Key Factors Influencing Combi Boiler Prices
- Combi Boiler Installation Costs
- Top UK Combi Boiler Brands and Prices
- Combi Boiler Grants: Energy Company Obligation (ECO4)
- Eligibility Criteria for ECO4 Combi Boiler Grants
- Apply for a Free Combi Boiler with ByEco: Check Your Eligibility Today
If you're like most homeowners in the UK, you've probably heard about combi boilers. They're not just popular; they're the top choice, found in over 50% of homes across the country. Why? Because they’re incredibly efficient and compact, making them perfect for smaller spaces.
Modern combi boilers are game-changers with efficiency ratings over 90%. Imagine slashing your energy bills while enjoying reliable heating and hot water from a single, space-saving unit. It's no wonder they’re the go-to option for so many households.
Of course, a new combi boiler can be a significant investment, with costs reaching up to £3,000, not including installation. But here's the good news: government programs like the Energy Company Obligation (ECO4) can help you significantly cut those upfront expenses. Plus, the long-term savings on your energy bills make it a smart, cost-effective choice.
Combi Boiler Prices

There are various factors that define the cost of a combi boiler, such as brand, model, efficiency, and output. Basic models, ideal for customers who do not want to spend much, cost between £500 and £900 not including installation. For those, who seek a good compromise between performance and price, there are mid-range ones that cost between £900 and £1,500. If you are interested in the best efficiency and power, then high-performance models are going to cost you between £1,500 and £3,000. Choosing the right combi boiler involves weighing these factors to find the best fit for your home and budget. Investing in a high-quality model can lead to greater energy efficiency and significant long-term savings on your heating bills.
Category | Price Range |
---|---|
Basic Models | £500 - £900 |
Mid-Range Models | £900 - £1,500 |
High Performance Models | £1,500 - £3,000 |
Key Factors Influencing Combi Boiler Prices
The upfront costs of combi boilers are based on various factors, such as:
- Boiler Brand and Model: Renowned brands like Worcester Bosch, Vaillant, and Viessmann tend to be more expensive due to their high reputation for quality and durability. Investing in these brands often means better performance and longevity.
- Boiler Size and Output: The size and power output of a combi boiler directly impacts its price. For instance, boilers with a 24-27 KW output are generally cheaper than those with a 28-35 KW output, though prices can vary by manufacturer and model.
- Efficiency Rating: While high-efficiency boilers come with a higher initial cost, they are a smart investment in the long run. These models significantly reduce energy bills, making them more cost-effective over time.
- Warranty Length: Boilers with extended warranties are usually pricier. However, they offer peace of mind, as any necessary repairs are covered at no extra charge. Additionally, a longer warranty often reflects the manufacturer's confidence in the boiler’s reliability and quality.
Combi Boiler Installation Costs
The installation costs for a new combi boiler can vary significantly, typically ranging from £500 to £2,000. Several factors influence these costs, including the location of your home and the complexity of the installation.
For instance, if the installation involves relocating the boiler or adding new pipes, you can expect the costs to be on the higher end, between £1,500 and £2,000. However, if the installation is straightforward, such as simply replacing an old boiler without moving it to a new location, the costs are generally lower, ranging from £700 to £1,500.
Understanding these cost variations can help you budget effectively for your new combi boiler installation, ensuring you get the best value for your investment.
Several factors influence these costs:
- Region: Installation prices can vary based on your location in the UK. Urban areas or regions with a higher cost of living typically have higher installation fees.
- Boiler Size and Power Output: Boilers with higher power outputs are likely to require more work to be installed, which makes the installation costs higher. This is due to the fact that new support structures are needed, and more modifications to existing systems are necessary.
- Complexity of Installation: If your new boiler requires additional components such as flue kits, condensate pipes, or new thermostats, these can add to the overall installation cost.
- Additional Work: Anything beyond the basic installation of the new system including the installation of new heating controls, power flushing of the system, or fixing any problems with the existing heating system will also be added to your installation costs.
Top UK Combi Boiler Brands and Prices
Here, we’ve collected a list of the top boiler brands in the UK, along with their costs. These brands are known for their reliability and high quality.
Worcester Bosch combi boiler prices

TrustPilot Rating: 4.6
Combi Boiler Price Range: £655 - £2,603
Worcester combi boilers are renowned for their impressive efficiency ratings of up to 94%, which not only helps to reduce carbon emissions but also lowers energy bills, making them an environmentally friendly choice. Customers consistently praise this brand for its reliability, efficiency, and extended warranty period. Worcester Bosch has earned the Which? Best Buy status for 14 consecutive years, underscoring its stellar reputation and high customer satisfaction.
These boilers are celebrated for their innovative features, such as Bosch EasyControl and Quick Tap technology. Additionally, Worcester Bosch is committed to eco-friendly solutions, designing their boilers to be compatible with renewable energy sources like solar panels.
Vaillant combi boiler prices

TrustPilot Rating: 4.4
Combi Boilers Price Range: £850 - £1,920
Vaillant boilers are famous for their exceptional quality and reliability. Each one is meticulously hand-built, ensuring top-notch performance. Like Worcester Bosch, Vaillant has won multiple Which? Best Buy awards, earning a solid reputation among homeowners.
People consistently praise Vaillant boilers for their high efficiency, quiet operation, and reliable performance. Plus, many models work seamlessly with smart thermostats, so you can manage your heating system remotely through your smartphone. This blend of advanced technology and trusted craftsmanship makes Vaillant boilers a great investment for any home.
Ideal combi boiler prices

TrustPilot Rating: 4.8
Combi Boilers Price Range: £750 - £1,814
Ideal combi boilers are A-rated for efficiency and are celebrated for their affordability and wide range of power outputs. While they may lack some advanced features found in competitor models, their cost-effectiveness and extensive warranty periods of 8-10 years make them a popular choice among UK homeowners. Ideal combi boilers provide reliable performance and long-term peace of mind, ensuring you get great value for your investment.
Viessmann combi boiler prices

TrustPilot Rating: 4.3
Combi Boilers Price Range: £1,000 - £3,000
Viessmann combi boilers are renowned for their energy efficiency and reliability. Unlike many competitors, they feature stainless steel heat exchangers, which are highly durable and resistant to corrosion. This design choice ensures a longer lifespan and reduces the need for maintenance.
Viessmann boilers are also compatible with various smart thermostats, providing advanced features such as remote control and weather compensation capabilities. While the initial cost may be higher, the long-term savings and exceptional performance make Viessmann combi boilers a worthwhile investment for any homeowner looking for efficiency and reliability.
Baxi combi boiler prices

TrustPilot Rating: 4.6
Combi Boilers Price Range: £630 - £1,276
Baxi is known for its excellent customer service and extensive warranty of up to 10 years. They have been listed as one of the top brands for good customer service in 2020. Baxi boilers come equipped with the uSense smart thermostat, allowing you to easily control and schedule your boiler’s temperature while monitoring energy consumption.
These boilers offer reliable and affordable options, especially for those on a tight budget. Designed for ease of installation and compact in size, Baxi combi boilers are perfect for small spaces. With a focus on both convenience and performance, Baxi is a smart choice for any homeowner.
Combi Boiler Grants: Energy Company Obligation (ECO4)
Since the UK government made its goal of reaching net-zero carbon emissions by 2050, it has introduced several government schemes for energy-efficiency upgrades. These grants were introduced to encourage UK households to reduce their carbon footprint by upgrading to eco-friendly options, without it being a financial strain.
The Energy Company Obligation (ECO4) is available to the people of England, Wales, and Scotland. It was launched in April 2022 and will run until March 2026. ECO4 offers full or partial funding to qualifying households for various energy-saving measures, including combi boilers. This scheme targets low-income and vulnerable households, ensuring everyone can have access to modern efficient combi boilers, regardless of their financial situation.
Eligibility Criteria for ECO4 Combi Boiler Grants
Here are the latest eligibility criteria for obtaining a combi boiler grant under the ECO4 scheme:
General Eligibility
- Property Ownership: You must be a homeowner, private tenant, or social housing tenant.
- Location: Available to residents in England, Wales, and Scotland.
- EPC Rating: Your property must have an Energy Performance Certificate (EPC) rating of D, E, F, or G.
- Current Boiler: The existing boiler must be faulty and powered by gas, oil, or LPG.
Qualifying Benefits
You can qualify if you or someone in your household receives any of the following benefits:
- Child Tax Credits
- Universal Credit
- Pension Credit
- Income Support
- Income-based Jobseeker’s Allowance
- Income-related Employment and Support Allowance
- Housing Benefit
- Working Tax Credit
- Warm Home Discount Scheme Rebate
ECO4 Flex Route
Local authorities have the flexibility to refer households that do not meet the standard criteria but are still considered vulnerable to fuel poverty. This includes:
- Households with a gross income of less than £31,000
- Households facing debt or having members aged 65+ or children under school age
- Households with specific health conditions like cardiovascular issues, respiratory conditions, or mobility impairments
Apply for a Free Combi Boiler with ByEco: Check Your Eligibility Today
Ready to see if you qualify for a free combi boiler and start your application? Fill out our simple form to find out We'll review your information and get back to you promptly to schedule a home assessment and determine your eligibility. If you qualify, we'll guide you through the application process to ensure you receive all the funding you deserve for your new combi boiler. Best of all, our services are completely free of charge.
If you have any questions or need personalised guidance, our team is here to help. Contact us, and we'll do our best to assist you.
Join ByEco and start your journey towards eco-friendly living. Apply now and enjoy the benefits of energy-efficient solutions!