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Last updated: 7th March, 2024


Baxi Combi Boiler Costs

Baxi Combi Boiler Costs

Key takeaways

  • Baxi combi boilers are sought after for their efficiency and space-saving design.
  • The cost of Baxi boilers in 2024 reflects the quality and technological advancements.
  • Considering a Baxi combi boiler investment requires assessing efficiency, size, and regulatory standards.

A newer, high-end Baxi combi boiler not only aims to save on space but can also offer significant energy efficiency.

Rising energy costs and environmental considerations have firmly placed energy efficiency at the forefront of homeowners' minds, especially when it comes to heating solutions. Baxi combi boilers have become a popular choice in this respect, recognised for their compact design and cost-saving potential

Investing in a Baxi combi boiler can be seen as a strategic move to curb energy bills while enjoying the benefits of an efficient, on-demand heating system.

As the market continues to navigate the intricacies of home heating, Baxi has maintained its position as a leading brand in boiler manufacturing. Prices for Baxi combi boilers have been impacted by various factors, including technological advancements and regulatory changes that may influence the overall cost. 

A newer, high-end Baxi combi boiler not only aims to save on space but can also offer significant energy efficiency with some models boasting an average efficiency rating of 94%.

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Understanding Combi Boilers

In the realm of home heating, combi boilers stand as a popular choice due to their ability to supply both hot water and central heating in a single compact unit.

Combi Boiler Basics

A combi boiler functions as an efficient multi-purpose solution. It heats water directly from the mains as soon as a tap is turned on, offering instant hot water without the need for a separate hot water cylinder. This design not only saves on hot water wait times but also reduces the space required within a home. Typically powered by gas, these boilers tend to be a more energy-efficient option for smaller domestic settings.

Advantages of Combi Boilers

The benefits of installing a combi boiler are manifold:

  • Space-saving: By eliminating the need for a separate cylinder, these boilers free up valuable space in properties where area is at a premium.

  • Energy efficiency: They only heat water on demand, which translates to less energy wastage and can potentially lower energy bills.

  • Central heating: Combi boilers provide central heating and efficiently distribute hot water to radiators throughout the dwelling.

  • Streamlined installation: With fewer components to worry about, the installation process is often more straightforward, although the cost can still range widely based on the complexity of the job.

By focusing on these specific functionalities and benefits, households can invest in a combi boiler with confidence, knowing that their choice supports modern energy efficiency standards and caters to the convenience of instant access to heating and hot water.

Baxi Combi Boiler Models and Key Features

Baxi offers a range of combi boilers designed to suit various household sizes and needs. These boilers are revered for their energy efficiency, ease of use, and smart control compatibility.

Baxi 200 Combi 2

The Baxi 200 Combi 2 is known for being a cost-effective gas boiler solution, striking a balance between efficiency and affordability. It is suitable for small to medium-sized homes and is noted for its compact design.

Baxi 400 Combi 2

Baxi 400 Combi 2 elevates the offering with a robust build aimed at delivering sustained performance. This model is a suitable choice for medium-sized properties, providing both heating and hot water without the need for an additional tank.

Baxi 600 Combi 2

The Baxi 600 Combi 2 merges compactness with convenience. It comes with a 7-year parts and labour warranty and features the EasyFill system for simple pressure maintenance. It's also compatible with Baxi's uSense 2 smart thermostat for app-based control.

Baxi 800 Combi 2

With the Baxi 800 Combi 2, durability meets user-friendliness in a domestic setting. It offers a 10-year parts and labour warranty and is manufactured in the UK. The boiler is designed to fit neatly into homes and pairs with smart controls for remote operation.

Baxi Platinum Compact Combi

The Baxi Platinum Compact Combi boiler stands out with its extended 10-year warranty, indicating the manufacturer's confidence in the product. Known for its reliability, this model is a popular choice among both homeowners and installers.

Baxi Duo-tec Compact Combi

The Baxi Duo-tec Compact Combi provides a mixture of efficiency and performance, suitable for a variety of home sizes. This boiler is designed to be energy-efficient and user-friendly, making it a favourite for those seeking a balance between cost and capabilities.

Model Comparisons

When comparing these models, it becomes evident that Baxi combi boilers offer a spectrum of features tailored for different needs. From the budget-friendly Baxi 200 to the feature-rich Baxi Platinum, the common denominators are energy efficiency, smart controls, and compact designs that accommodate the varied requirements of UK households.

Cost Factors for Baxi Combi Boilers

Understanding the cost factors for a new Baxi combi boiler involves looking at both the price of the boiler itself and the installation expenses. These vary depending on multiple aspects including the boiler model and its capabilities.

Price Breakdown

The price of a new Baxi combi boiler may fluctuate, especially as different models suit diverse property sizes and heating demands:

  • Models and Prices: Entry-level Baxi combi boilers start from £675 for a 24kW model, typically sufficient for a small home. Larger properties might necessitate a boiler with a higher kW output, raising the cost.

  • Energy Rating: Boilers with a higher energy efficiency rating may cost more upfront, but potentially lower energy bills in the long run.

Factors Influencing Installation Costs

Installation costs for Baxi combi boilers are impacted by several factors:

  • Complexity of Installation: If additional work like changing pipework is needed, costs rise.

  • Location for Installation: Replacing a boiler in the same spot as the old one usually keeps costs lower compared to relocating it.

  • Associated Components: Occasionally, you may require new radiators or a system flush, which will add to the expense.

When seeking boiler quotes, ensure they include both the cost of the combi boiler and the installation to avoid surprises.

Installation Process of Baxi Combi Boilers

Choosing the right professional for installation and understanding the steps involved are pivotal for ensuring the longevity and efficiency of your Baxi Combi Boiler.

Choosing the Right Installer

It is essential to select a Gas Safe registered heating engineer to install your Baxi combi boiler. This ensures that the installation meets safety standards and it can also impact the boiler's lifespan. As part of the process:

  • Verify the engineer's Gas Safe registration to confirm they are authorised to work with gas appliances.

  • Consider engineers with experience in installing Baxi boilers for added confidence in their familiarity with the brand's models.

  • Attain multiple quotes to assess the cost of installation in a transparent manner.

Installation Steps

The installation of a Baxi combi boiler involves a systematic approach which includes the following steps:

  1. Pre-installation checks: The engineer will assess the site to ensure compatibility with mains and to avoid future system problems.

  2. Removing the old boiler: If applicable, safely disconnecting and disposing of the existing boiler.

  3. Mounting the new boiler: Fitting the Baxi combi boiler securely onto a suitable wall.

  4. Connecting the system: This involves piping work for the water, gas, and for the energy efficient condensate drainage.

  5. Electrical setup: Wiring the boiler to the mains electrical supply.

  6. System testing: They will rigorously test the boiler and its controls for reliability and performance.

  7. Commissioning the boiler to ensure optimal operation from the outset.

  8. Providing a tutorial on the boiler's usage and its features.

These steps represent an overarching guide, while exact methods may vary per specific model and house layout. It's important to discuss the details with your installer, as installation costs fluctuate based on complexity and labour involved.

Optimising Your Home Heating

In the pursuit of a more cost-effective and environmentally friendly home heating system, homeowners are focusing on two pivotal elements: energy efficiency and innovative technology.

Improving Energy Efficiency

Energy efficiency ratings are pivotal in reducing both energy bills and carbon emissions from central heating systems. Upgrading to a system boiler with a higher rating ensures more of the fuel used goes directly to heating the home. For instance, a Baxi combi boiler, characterised by its high flow rate and efficient flue gas heat recovery system, can significantly enhance your home's thermal efficiency.

  • Load compensation mechanisms adjust the heat output based on the room's temperature, allowing for fine-tuning of energy usage.

  • Weather compensation controls measure external temperatures to predict heating demands, improving overall system responsiveness and efficiency.

These advancements contribute to a home heating system that not only lowers costs but also aligns with current environmental standards to reduce carbon emissions.

Smart Heating Controls

With the integration of smart controls, managing your home's temperature becomes both more efficient and convenient. Such controls can be operated remotely, enabling precise adjustments based on real-time needs.

  • Timers and programmable settings allow homeowners to schedule their heating around their daily routine, ensuring warmth when needed and conserving energy when the house is unoccupied.

  • Integration with smart control apps offers the flexibility to adjust your heating settings from any location, which can lead to substantial savings on energy bills.

By combining these elements—a high energy efficiency rating and smart heating technology—homeowners can achieve a state-of-the-art home heating system that is both energy-efficient and capable of delivering significant operational cost savings over time.

Assessing Size and Power Requirements

When selecting a Baxi combi boiler in 2024, two vital considerations are the correct size for your home and the boiler's power output to meet your hot water and heating demands efficiently.

Sizing for Your Home

Determining the appropriate size of a Baxi combi boiler is dependent on the space available and the number of bathrooms. Smaller homes and properties with a single bathroom would benefit from more compact boiler options, which can be conveniently housed in kitchen cupboards. Conversely, homes with multiple bathrooms might demand a boiler with greater capacity.

Determining Boiler Power Output

The power output, measured in kilowatts (kW), is essential in delivering hot water on demand without inefficiencies. For a smaller home with lower demand, a boiler ranging from 24kW to 27kW would typically suffice. Houses requiring higher output due to multiple hot water outlets should consider boilers with an output between 28kW to 34kW, ensuring a consistent supply of hot water and heating.

Benefits and Downsides

When investing in a Baxi Combi boiler in 2024, homeowners must weigh the balance between upfront costs and long-term savings.

Evaluating Energy Savings

Baxi Combi boilers are renowned for their energy-efficient operation, potentially reducing energy bills significantly. By using less fuel to heat water, they offer homeowners a financially savvy solution over time. For instance, upgrading to a Baxi Combi boiler can trim down annual heating expenses, with savings contingent on prior boiler efficiency and usage patterns.

Considering Home Requirements

While the lure of savings and efficiency is compelling, the suitability of a Baxi Combi boiler hinges on specific home demands. Combi boilers excel in smaller abodes without the need for a hot water storage tank, saving on space and reducing energy waste. Yet, in larger households with simultaneous multiple hot water outlets, the Combi might grapple to keep up, affecting both comfort and efficiency. The Baxi Combi boiler's cost must also be factored against these operational intricacies to gauge true value for money.

The transition to a Baxi Combi system can also lower your carbon footprint, aligning with the escalating priority for greener living. Tailoring the choice to individual home setup ensures maximised benefits from this energy-efficient technology.

Regulatory and Safety Considerations

When selecting a Baxi combi boiler in 2024, it is imperative to understand the regulatory frameworks and safety standards that govern their installation and operation. The emphasis is not only on compliance but also on ensuring prolonged efficiency and safety.

Certification and Quality Standards

Building regulations in the UK stipulate that any condensing combi boiler—whether powered by LPG or natural gas—must meet specific energy efficiency standards. Baxi combi boilers are designed to comply with these standards, achieving the necessary certification. Installations and repairs can only be conducted by Gas Safe registered engineers, who ensure that the boiler operates safely and meets the correct criteria.

  • Energy Efficiency: All Baxi combi boilers must adhere to a minimum standard of 92% efficiency under the ErP directive.

  • Gas Safety: It is mandatory for installations to be carried out by Gas Safe registered professionals, ensuring the boiler is set up without compromising safety.

Maintenance and Reliability

Regular boiler maintenance is essential for ensuring the continued reliability and safety of a Baxi combi boiler. Scheduled servicing helps in maintaining the boiler's safety, performance, and compliance with current regulations.

  • Servicing: Annual checks by qualified technicians are necessary to maintain warranty and operational reliability.

  • Durability: Baxi's commitment to quality is reflected in the robust build of their boilers, designed to endure regular use while maintaining safety standards.

Underpinning these considerations is Baxi’s adherence to UK regulations, which play a pivotal role in the maintenance and reliability of the boilers. Regular servicing by accredited engineers is a prerequisite, ensuring that Baxi’s combi boilers continue to operate at peak efficiency within the prescribed safety parameters.

Long-Term Considerations

When investing in a Baxi Combi Boiler in 2024, it’s imperative to evaluate not only the initial cost but also the long-term implications on sustainability and expenditure.

Lifespan and Replacement

Lifespan: A Baxi Combi Boiler typically offers a substantial operational tenure. Customer feedback indicates an average lifespan of up to 15 years, which hinges on consistent upkeep. Reliability over the years has been corroborated by reviews on platforms such as Trustpilot and Which?, where users often discuss long-term performance.

Maintaining a Combi Boiler: Regular maintenance is vital in extending the lifespan of your boiler. Scheduled annual check-ups can preempt common issues, ensuring efficient functioning and forestalling premature replacement costs.

Replacement: Should a replacement be necessary, it is usually spurred by either operational failings beyond economic repair or efficiency drop-offs, as newer models tend to offer more energy-saving features. It’s wise to be mindful that even with stellar reliability, the longevity of any boiler can be impacted by external factors and usage patterns.

Final Thoughts on Baxi Combi Boiler Investment

When considering the investment in a Baxi combination boiler in 2024, prospective buyers should weigh up both the initial outlay and the long-term savings. Prices for Baxi combi boilers typically range from £730 to £1,300, presenting a variety of options to suit different budgetary requirements.

Value for money is a key aspect of any boiler purchase. Baxi boilers, while generally less expensive than some luxury brands, offer a reliable and efficient service, with several models boasting a good balance between cost and performance. Their mid-range standing in the market provides customers with a practical choice without sacrificing quality.

It is worth noting the energy efficiencies achievable with modern combi boilers. A Baxi boiler could potentially usher in up to £800 in annual heating cost reductions when compared to older, conventional boilers. This saving is a significant factor in confirming the worth of this investment.

Considering Baxi’s boiler prices alongside the potential for lower utility bills, one can ascertain that this brand offers a sensible option for households looking for a new heating system. Carefully examining the diverse range of Baxi boiler prices within the context of their respective specifications is crucial. It ensures that the selected model aligns with individual home heating requirements while optimising the financial returns over time.

Investing in a Baxi combi boiler appears to afford homeowners not just a functional appliance, but a cost-effective path to modern home heating. The balance between up-front costs and future savings makes Baxi a compelling choice in the combi boiler market.

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 a Baxi combi boiler cost?

In 2024, a Baxi combi boiler's price varies based on model and capacity, typically ranging from £700 to £1,200. Installation costs may add a further £500 to £1,000.

How long should a Baxi combi boiler last?

On average, a Baxi combi boiler is expected to last between 12 to 15 years, assuming it is regularly serviced and maintained.

Is a Baxi combi boiler any good?

Baxi combi boilers are renowned for efficiency and reliability, often scoring well in consumer reviews and industry assessments.

How many years should a Baxi boiler last?

A well-maintained Baxi boiler can last up to 15 years. However, boilers may require replacement sooner if not serviced regularly.

How many radiators can a Baxi boiler run?

The number of radiators a Baxi boiler can run depends on its size and output. Generally, a mid-range Baxi combi boiler can comfortably supply about 10 to 15 radiators.

How many radiators can a Baxi combi boiler run?

A Baxi combi boiler can typically support up to 15 radiators, depending on the model's kilowatt output and the home's heating requirements.

What temperature should a Baxi combi boiler be set at in the UK?

The optimal temperature for a Baxi combi boiler in the UK is usually around 65°C to 75°C for central heating. The domestic hot water should be set to at least 60°C to ensure efficient operation and minimise bacterial growth.

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.