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A Complete Guide to Baxi Boilers in 2025
Table of Contents
Introduction to Baxi Boilers
Baxi is a leading British boiler manufacturer with a strong reputation for providing reliable, energy-efficient heating solutions. Their range includes combi boilers, system boilers, and conventional boilers, making them suitable for various property types. Whether you’re a homeowner looking to upgrade your heating system or an installer searching for the best solutions, this guide will walk you through everything you need to know about Baxi boilers in 2025, including model comparisons, pricing, and key features.
Baxi Boiler Prices and Models (2025 Update)
The cost of a new Baxi boiler depends on several factors, including model type, size, efficiency rating, and installation complexity. Below is an updated breakdown of some of the most popular Baxi boiler models and their estimated price ranges in 2025:
Baxi Combi Boilers Prices
Baxi 400 Series (Combi Boilers)
Baxi 424 Combi 2.1 Boiler (24kW) – Approx. £660 – £800
Baxi 430 Combi 2.1 Boiler (30kW) – Approx. £680 – £820
Baxi 436 Combi 2.1 Boiler (36kW) – Approx. £800 – £1050
Baxi 600 Combi Series (Combi Boilers)
Baxi 624 Combi 2 Boiler (24kW) – Approx. £860 – £1000
Baxi 630 Combi 2 Boiler (30kW) – Approx. £950- £1,150
Baxi 636 Combi 2 Boiler (36kW) – Approx. £1,100 – £1,300
Baxi 800 Series (Combi Boilers)
Baxi 824 Combi 2 Boiler (24kW) – Approx. £1,160 – £1,300
Baxi 830 Combi 2 Boiler (30kW) – Approx. £1,280 – £1,400
Baxi 836 Combi 2 Boiler (36kW) – Approx. £1,400 – £1,600
Baxi Platinum Compact Combi (Combi Boilers)
Baxi Platinum Compact 25kW – Approx. £1,100 – £1,300
Baxi Platinum Compact 30kW – Approx. £1,240 – £1,400
Baxi Platinum Compact 36kW – Approx. £1,400 – £1,600
Baxi Duo-tec Compact Combi (Combi Boilers)
Baxi Duo-tec Compact 24kW – Approx. £900 – £1,100
Baxi Duo-tec Compact 30kW – Approx. £1,020 – £1,240
Baxi Duo-tec Compact 36kW – Approx. £1,190 – £1,300
Baxi Heat Only Boiler Prices
Baxi 400 Heat Series
Baxi 415 Heat (15kW) – Approx. £875 – £1,000
Baxi 418 Heat (18kW) – Approx. £925 – £1,150
Baxi 424 Heat (24kW) – Approx. £945 – £1,250
Baxi 600 Heat Series
Baxi 613 Heat (13kW) – Approx. £1,090 – £1,300
Baxi 616 Heat (16kW) – Approx. £1,110 – £1,330
Baxi 619 Heat (19kW) – Approx. £1,150 – £1,320
Baxi 625 Heat (25kW) – Approx. £1,265 – £1,480
Baxi 630 Heat (30kW) – Approx. £1,320 – £1,500
Baxi 800 Heat Series
Baxi 816 Heat (16kW) – Approx. £1,200 – £1,400
Baxi 825 Heat (25kW) – Approx. £1,340 – £1,550
Baxi 830 Heat (30kW) – Approx. £1,400 – £1,600
Potterton Titanium Heat Series
Potterton Titanium 12kW – Approx. £900 – £1,200
Potterton Titanium 15kW – Approx. £1,010 – £1,200
Potterton Titanium 18kW – Approx. £1,050 – £1,240
Potterton Titanium 24kW – Approx. £1,100 – £1,500
Potterton Titanium 30kW – Approx. £1,140 – £1,350
Baxi System Boilers Prices
Baxi 600 System Series
Baxi 615 System – Approx. £1,110 – £1,270
Baxi 618 System – Approx. £1,150 – £1,300
Baxi 624 System – Approx. £1,250 – £1,400
Baxi 800 System Series
Baxi 818 System – Approx. £1,120 – £1,280
Baxi 824 System – Approx. £1,290 – £1,400
Baxi 830 System – Approx. £1,420 – £1,600
Baxi Megaflo Compact System
Baxi Megaflo Compact 15 System – Approx. £925 – £1,100
Baxi Megaflo Compact 18 System – Approx. £990 – £1,150
Baxi Megaflo Compact 24 System – Approx. £1,090 – £1,250
Warranty Information for Baxi Boilers
Baxi boilers come with a variety of warranty options, depending on the model. Having a strong warranty ensures peace of mind and protection for your heating system. Below is a breakdown of the warranty periods available for different Baxi boiler models:
5-Year Warranty – Affordable & Reliable Heating
Our Baxi 400 Series and Baxi 400 Heat Series boilers offer a cost-effective heating solution without compromising on quality. Designed for smaller to mid-sized homes, these boilers are compact, efficient, and easy to install. Whether you need a combi or heat-only option, they provide dependable performance with straightforward operation, making them a great choice for homeowners looking for affordability and reliability.
Baxi 400 Series (Combi Boilers)
Baxi 424 Combi 2.1 Boiler (24kW)
Baxi 430 Combi 2.1 Boiler (30kW)
Baxi 436 Combi 2.1 Boiler (36kW)
Baxi 400 Heat Series
Baxi 415 Heat (15kW)
Baxi 418 Heat (18kW)
Baxi 424 Heat (24kW)
7-Year Warranty – High Efficiency & Versatile Options
With the Baxi 600 Series, Duo-tec Compact Combi, and Potterton Titanium Heat Series, you get a longer-lasting, more efficient heating solution. These boilers cater to a variety of home sizes, offering combi, heat-only, and system options for households with higher heating and hot water demands. The Baxi Megaflo Compact System is ideal for larger homes, delivering powerful heating and hot water with excellent reliability.
Baxi 600 Series (Combi Boilers)
Baxi 624 Combi 2 Boiler (24kW)
Baxi 630 Combi 2 Boiler (30kW)
Baxi 636 Combi 2 Boiler (36kW)
Baxi Duo-tec Compact Combi (Combi Boilers)
Baxi Duo-tec Compact 24kW
Baxi Duo-tec Compact 30kW
Baxi Duo-tec Compact 36kW
Baxi 600 Heat Series
Baxi 613 Heat (13kW)
Baxi 616 Heat (16kW)
Baxi 619 Heat (19kW)
Baxi 625 Heat (25kW)
Baxi 630 Heat (30kW)
Potterton Titanium Heat Series
Potterton Titanium 12kW
Potterton Titanium 15kW
Potterton Titanium 18kW
Potterton Titanium 24kW
Potterton Titanium 30kW
Baxi 600 System Series
Baxi 615 System
Baxi 618 System
Baxi 624 System
Baxi Megaflo Compact System
Baxi Megaflo Compact 15 System
Baxi Megaflo Compact 18 System
Baxi Megaflo Compact 24 System
10-Year Warranty – Premium Performance & Long-Term Peace of Mind
Our Baxi 800 Series and Platinum Compact Combi range are built for homeowners who want the best in durability, efficiency, and long-term reliability. These boilers use high-quality components, offer excellent energy savings, and come with an extended 10-year warranty for complete peace of mind. Designed to perform in even the busiest homes, they deliver powerful and efficient heating for years to come.
Baxi 800 Series (Combi Boilers)
Baxi 824 Combi 2 Boiler (24kW)
Baxi 830 Combi 2 Boiler (30kW)
Baxi 836 Combi 2 Boiler (36kW)
Baxi Platinum Compact Combi (Combi Boilers)
Baxi Platinum Compact 25kW
Baxi Platinum Compact 30kW
Baxi Platinum Compact 36kW
Baxi 800 Heat Series
Baxi 816 Heat (16kW)
Baxi 825 Heat (25kW)
Baxi 830 Heat (30kW)
Baxi 800 System Series
Baxi 818 System
Baxi 824 System
Baxi 830 System
Top 10 Features and Benefits of Baxi Boilers
1. Exceptional Energy Efficiency
Baxi boilers are designed to be highly efficient, with most models achieving an A-rating for energy efficiency. This means they use less fuel to provide the same level of heating, leading to lower energy bills and reduced carbon emissions—helping both your wallet and the environment.
2. Compact, Space-Saving Designs
Many Baxi boilers feature a sleek, compact build, making them easy to install in small spaces such as kitchen cupboards or tight utility areas. This makes them a great option for homes with limited room for a large heating system.
3. Smart Technology Compatibility
Baxi boilers are designed to work seamlessly with smart thermostats like Google Nest and Hive, allowing you to control your heating remotely from a smartphone or tablet. This gives you greater control over your energy use, helping you save money while keeping your home comfortable.
4. Built-In Frost Protection
For homeowners with boilers installed in cold areas like lofts, garages, or outdoor spaces, frost protection is an essential feature. Many Baxi models include automatic frost protection, which prevents freezing and ensures your boiler continues running efficiently during the winter months.
5. Quiet and Efficient Operation
Unlike older, noisy boiler systems, Baxi boilers operate with advanced noise-reduction technology, making them significantly quieter. This is ideal for homes where the boiler is located near bedrooms, living areas, or home offices, ensuring minimal disruption.
6. Easy Installation and Maintenance
Baxi boilers are designed with installer-friendly features, making the installation process quicker and more efficient. In addition, accessible components and built-in diagnostics mean servicing and maintenance are straightforward, reducing the time and cost of repairs.
7. Durable and Built to Last
Baxi has a strong reputation for quality and reliability, with their boilers built from robust, high-performance components. This ensures long-term durability, giving homeowners peace of mind that their heating system will last for years to come.
8. Long Warranty Coverage
With warranties of up to 10 years on selected models, Baxi provides comprehensive protection against unexpected breakdowns or repairs. This added security ensures you can rely on your heating system without worrying about costly repairs.
9. Future-Ready for Green Energy
As the UK moves toward a greener future, many Baxi boilers are hydrogen-blend ready, meaning they can run on a 20% hydrogen mix. This future-proof feature ensures compliance with upcoming energy regulations and helps reduce carbon emissions.
10. UK-Based Support and Aftercare
Baxi offers strong customer support, with UK-based service engineers and technical assistance available when needed. Whether it’s routine maintenance or troubleshooting, homeowners can count on reliable aftercare and a responsive support team.
Choosing the Right Baxi Boiler for Your Home
Selecting the ideal Baxi boiler depends on several key factors:
Home Size: A smaller home with 1-2 bathrooms typically requires a 24-30kW combi boiler, whereas larger homes with multiple bathrooms may need a more powerful 36-40kW model.
Hot Water Demand: If your household frequently uses hot water simultaneously, consider a system boiler or a high-output combi boiler for consistent performance.
Budget Considerations: While Baxi boilers offer great value, don’t forget to factor in installation costs and optional extras like smart thermostats for enhanced efficiency.
By choosing the right Baxi boiler, you can ensure optimal heating performance, energy efficiency, and long-term savings.
Stay Warm All Year with a Boiler You Can Trust
Installed By Qualified Heating Engineer
Combi Boilers (Compact & Efficient)
Best for: Small to medium homes with limited space and moderate hot water demand.
Baxi 400 Series (Combi Boilers)
Entry-level option with reliable performance.
Compact and lightweight, ideal for smaller homes.
Quiet operation with good efficiency.
Limited advanced features but good for budget-conscious homeowners.
Baxi 600 Series (Combi Boilers)
A step up in efficiency and build quality.
Comes with EasyFill, allowing quick system top-ups.
Compatible with smart thermostats for better energy management.
Compact size but higher reliability than the 400 series.
Baxi 800 Series (Combi Boilers)
Premium combi boiler with high efficiency.
Comes with a 10-year warranty, showing its reliability.
Fitted with brass components for durability.
Ideal for medium to large homes with higher hot water demand.
Baxi Platinum Compact (Combi Boilers)
Top-tier compact boiler designed for efficiency and performance.
Higher efficiency ratings than the 600 and 400 series.
Works well in homes with limited space but still requires high performance.
Long warranty for peace of mind.
Baxi Duo-tec Compact (Combi Boilers)
Highly energy-efficient with an A-rating for performance.
Good for smaller homes that need compact and cost-effective heating.
Reliable for steady hot water output but not as advanced as the 800 series.
Heat-Only Boilers (Traditional & Reliable)
Best for: Homes with an existing heating system, especially with a separate hot water cylinder and tank.
Baxi 400 Heat Series
Budget-friendly heat-only boiler.
Suitable for smaller homes that already use a vented system.
No frills but reliable heating.
Baxi 600 Heat Series
Upgraded components for better durability than the 400 series.
Higher energy efficiency with a compact design.
Good for replacing old conventional boilers with modern ones.
Baxi 800 Heat Series
Premium build with brass fittings for longevity.
Ideal for larger properties needing high heat output.
Can be paired with a Megaflo for excellent hot water delivery.
Potterton Titanium Heat Series (Potterton is a Baxi brand)
Similar to Baxi’s heat-only range but designed with Potterton’s durability and reliability.
Flexible flue options make it easy to install.
Well-suited for older heating systems.
System Boilers (For Larger Homes & High Water Demand)
Best for: Homes with high hot water demand and multiple bathrooms.
Baxi 600 System Series
Compact and efficient system boiler for modern homes.
Works well with an unvented cylinder, providing strong hot water flow.
No need for a loft tank, making it easier to install in some homes.
Baxi 800 System Series
Enhanced components and higher durability than the 600 series.
10-year warranty, showing its reliability.
Designed for homes with multiple bathrooms that need good water pressure.
Baxi Megaflo Compact System
Specifically designed to work with a Megaflo cylinder, ensuring high hot water delivery.
Perfect for large homes with multiple bathrooms.
One of the best-performing system boilers in the Baxi lineup.
Which Baxi Boiler is Best for You?
For small homes or flats: Baxi 400 or Baxi 600 Combi.
For medium homes with 1-2 bathrooms: Baxi 800 Combi or Platinum Compact.
For larger homes with high hot water demand: Baxi 800 System or Baxi Megaflo System.
For traditional heating setups: Baxi 600 or 800 Heat-Only models.
Baxi is known for reliable, energy-efficient boilers with long warranties and strong aftercare. Whether you need a budget-friendly option or a high-end, premium boiler, there’s a model to fit every home.
Is a Baxi Boiler Right for You?
Baxi boilers remain a top choice in 2025 for their reliability, efficiency, and affordability. Whether you’re considering the Baxi 824 for a small home or the powerful Baxi Platinum 40kW for a larger property, Baxi offers a model to suit your needs.
When choosing your boiler, always consider your home’s size, hot water demand, and budget. And don’t forget—installation quality plays a crucial role in your boiler’s performance and longevity. Always use a qualified heating professional to ensure a safe and efficient installation.
For expert advice and a tailored quote, contact your local Baxi installer today!
In conclusion: when considering purchasing a new Baxi boiler – whether it be a combi boiler like the popular models in the Baxi 800 Series or a model like the Platinum – it is crucial to consider factors such as your home’s heating requirements (size and number of occupants), budget constraints, available space,and any additional features you may require before making your final decision. Remember that installation costs are also essential factors that should be taken into account when calculating your overall investment. For more detailed information about specific models or pricing structures, consult your local heating supplier or visit official manufacturer websites.
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