How Much Does a New Baxi Boiler Cost with Installation?

For example, the type and size of the Baxi boiler you select, along with the complexity of removing your old heating system, will affect the overall installation cost.

This table offers an approximate installation cost for a new Baxi boiler.

Boiler Type	Approximate cost of boiler	Approximate cost of installation	Approximate total cost
Combi for small to medium homes	£850	£1,200	£2,050
Combi for medium homes	£1,100	£1,200	£2,300
System for small to medium homes	£1,200	£1,200	£2,400
System for medium to large homes	£1,400	£1,200	£2,600
Regular for small to medium homes	£900	£1,200	£2,100
Regular for medium to large homes	£1,400	£1,200	£2,600

It’s important to note that these prices are estimates based on online research. For a more accurate quote for your Baxi boiler installation, it’s recommended to seek quotes from at least 2-3 Gas Safe registered installers.

Why choose a Baxi boiler?

From the reviews and feedback available online, Baxi boilers offer high efficiency, reliability, and affordability, with a range of models to suit different homes. They also come with long warranties, excellent customer support, and are known for their durability.

Who makes Baxi boilers?

Company background

Baxi has been providing heating and hot water solutions since 1866, growing from its origins in Preston, Lancashire, to over 1,200 employees. The company offers commercial products like Baxi Packaged Solutions and Baxi AquaHeat, along with consumer heating control units. Supported by award-winning customer service and industry-leading training, Baxi ensures a seamless experience.

Baxi as a company includes several leading heating brands including Potterton, Heatrae Sadia, Remeha, Andrews Water Heaters, Megaflo hot water cylinders, and Main Heating.

As part of the global BDR Thermea Group, Baxi has access to top-tier research and development, driving innovation and the transition to reliable, affordable, and sustainable renewable heating and hot water solutions.

Types of Baxi boilers

Baxi offers a range of gas boiler models, including five combi boilers, three system boilers and three regular boilers, as well as two electric boilers.

Baxi combi boilers

Combi boilers are compact, all-in-one systems that draw water directly from the mains. They provide hot water for both heating and domestic use on demand, offering convenience and energy efficiency by heating water only when needed.

However, because combi boilers don’t store hot water, they may struggle to maintain water pressure when multiple taps are used simultaneously. This can make them less ideal for larger homes or households with high hot water needs.

Baxi’s range of gas combi boilers includes boilers for small, medium and large homes including:

• Baxi 400 Combi 2.1 (24kW, 30kW, 36kW)
• Baxi 600 Combi 2 (24kW, 30kW, 36kW)
• Baxi 800 Combi 2 (24kW, 30kW, 36kW)
• Baxi Duo-tec Compact Combi (25kW, 30kW, 36kW)
• Baxi Platinum Compact Combi (25kW, 30kW, 36kW)

Baxi system boilers

Like Combi boilers, System boilers also draw water directly from the mains, but they work alongside a hot water cylinder, usually stored in an airing cupboard. The cylinder stores the hot water produced by the boiler, ensuring a larger volume is available to supply multiple radiators, taps, or showers at once without affecting water pressure. While the boiler only provides hot water for central heating, the cylinder allows it to also supply hot water for your home.

Baxi’s range of gas system boilers includes boilers for small, medium and large homes including:

• Baxi 600 System 2 (15kW, 18kW, 24kW)
• Baxi 800 System 2 (18kW, 24kW, 30kW)
• Baxi Megaflo Compact System (15kW, 18kW, 24kW)

Baxi regular boilers

Regular boilers (also known as heat-only, traditional, or conventional boilers) work similarly to system boilers by using a hot water cylinder to supply multiple water outlets at once.

The key difference is that regular boilers don’t draw water from the mains. Instead, they rely on a large cold water feeder tank, usually located in the attic.

Originally designed before direct mains connections became common, regular boilers are still a reliable option in modern homes, especially in areas with low mains water pressure. Although they may not provide the same water pressure as mains-fed systems, they can still offer effective heating solutions.

Baxi’s range of gas regular boilers includes boilers for small, medium and large homes including:

• Baxi 400 Heat (12kW, 15kW, 18kW, 24kW, 30kW)
• Baxi 600 Heat (13kW, 16kW, 19kW, 25kW, 30kW)
• Baxi 800 Heat (16kW, 25kW, 30kW)
• Potterton Titanium Heat (12kW, 15kW, 18kW, 24kW, 30kW)

Baxi electric boilers

Amptec is a compact and discreet electric boiler ideal for homes not connected to the mains gas network, including rural areas or urban locations with flueing restrictions. It is also well-suited for multi-occupancy or high-rise buildings. Offering high efficiency and low maintenance, Amptec is an excellent solution for new build properties.

• Amptec (4kW, 6kW, 9kW, 11kW, 12kW)

Electromax is an all-in-one electric boiler with a 180-litre cylinder, delivering fast, reliable, and energy-efficient heating and hot water. Models compatible with underfloor heating systems are also available.

• Electromax (6kW, 9kW)

Baxi boiler models and price guide

The price of a Baxi boiler will depend on the model that you choose and the size of the boiler you need based on your hot water usage.

The following tables outline average prices for Baxi boilers, excluding installation.

Baxi combi boiler prices

Model	Average Price
Baxi 400 Combi 2.1 24kW	£740
Baxi 400 Combi 2.1 30kW	£780
Baxi 400 Combi 2.1 36kW	£800
Baxi 600 Combi 2 24kW	£900
Baxi 600 Combi 2 30kW	£1,000
Baxi 600 Combi 2 36kW	£1,100
Baxi 800 Combi 2 24kW	£1,250
Baxi 800 Combi 2 30kW	£1,300
Baxi 800 Combi 2 36kW	£1,350
Baxi Duo-tec Compact Combi 25kW	£1,000
Baxi Duo-tec Compact Combi 30kW	£1,050
Baxi Duo-tec Compact Combi 36kW	£1,100
Baxi Platinum Compact Combi 25kW	£1,150
Baxi Platinum Compact Combi 30kW	£1,200
Baxi Platinum Compact Combi 36kW	£1,250

Baxi system boiler prices

Model	Average Price
Baxi 600 System 2 15kW	£1,200
Baxi 600 System 2 18kW	£1,300
Baxi 600 System 2 24kW	£1,400
Baxi 800 System 2 18kW	£1,300
Baxi 800 System 2 24kW	£1,400
Baxi 800 System 2 30kW	£1,500
Baxi Megaflo Compact System 15kW	£1,100
Baxi Megaflo Compact System 18kW	£1,150
Baxi Megaflo Compact System 24kW	£1,200

Baxi regular boiler prices

Model	Average Price
Baxi 400 Heat 12kW	£900
Baxi 400 Heat 15kW	£925
Baxi 400 Heat 18kW	£950
Baxi 400 Heat 24kW	£975
Baxi 400 Heat 30kW	£1,000
Baxi 600 Heat 13kW	£1,000
Baxi 600 Heat 16kW	£1,025
Baxi 600 Heat 19kW	£1,050
Baxi 600 Heat 25kW	£1,075
Baxi 600 Heat 30kW	£1,100
Baxi 800 Heat 16kW	£1,400
Baxi 800 Heat 25kW	£1,500
Baxi 800 Heat 30kW	£1,600
Potterton Titanium Heat 12kW	£1,050
Potterton Titanium Heat 15kW	£1,060
Potterton Titanium Heat 18kW	£1,070
Potterton Titanium Heat 24kW	£1,080
Potterton Titanium Heat 30kW	£1,090

Baxi electric boiler prices

Model	Average Price
Amptec 4kW	£600
Amptec 6kW	£650
Amptec 9kW	£700
Amptec 11kW	£750
Amptec 12kW	£800
Electromax 6kW	£2,500
Electromax 9kW	£2,800

Comparison of prices across models

Based on this research, Baxi’s most affordable boilers are combi boilers, followed by regular boilers, with system boilers being the most expensive. However, Electromax boilers which include a hot water storage cylinder are significantly more expensive than all the gas boilers manufactured by Baxi.

However, it’s important to note that these prices do not include installation costs, which will vary depending on the complexity of the work required.

Boiler Installation Cost Calculator

Based on actual quotes provided to WhatPrice by homeowners like you, our boiler installation cost calculator will give you an instant estimate of how much you can expect to pay for a new boiler and installation. 

Best Baxi boilers for different homes

Now that you have a good sense of how much a Baxi boiler will cost, the next step is deciding which model is best suited for your home and lifestyle.

To make an informed decision, it’s a good idea to consult with a few installers who can assess your home’s size and your hot water needs. Remember, gas boilers should always be installed by Gas Safe registered engineers.

Best combi boiler for small homes and apartments

Combi boilers provide heating and hot water on demand, so there is no need for a storage cylinder which is ideal for homes where space is limited. The Baxi 400 2.1 Combi is a great choice for small homes as it is very compact. For homes that are restricted in terms of where flues can be installed such as high-rise apartments, another option is the Amptec electric combi boiler.

Best system boiler for family homes

Family homes with a higher demand for hot water might consider the Baxi 600 System 2 or the Baxi 800 System 2 models. System boilers deliver hot water to your radiators while a separate hot water cylinder (usually stored in an airing cupboard) holds hot water for your taps and showers. Being able to store a greater volume of hot water so multiple outlets can work at the same time without losing pressure.

Best regular boiler for large homes

The Potterton Titanium Heat is an ideal choice for larger homes with a high demand for hot water and/or multiple bathrooms. Regular boilers get their water supply from a large feed tank in the attic, and the hot water produced by the boiler is stored in a cylinder for domestic use.

Key features of Baxi boilers

While each boiler model offers its own features and benefits, there are some common features that are found across the Baxi product range.

Energy efficiency and savings

All Baxi combi, system, and regular boilers are rated A for ErP efficiency, the highest efficiency level a boiler can achieve. This means that for every £1 spent on fuel, less than 10p is wasted. If you are replacing an old, inefficient boiler, a new Baxi boiler should deliver noticeable savings on your energy bills.

Compact design

Baxi boilers are generally found to be quiet when running and because of their compact and lightweight design, many Baxi boilers can be installed virtually anywhere in your home.

Baxi boiler installation

To ensure your Baxi boiler is installed correctly and safely, you will need to hire a Gas Safe engineer. This can be a significant cost, so it’s important to get quotes from at least 3-4 reputable companies.

Installation costs for a Baxi boiler

To install a Baxi boiler in your home you can expect to pay approximately £1,200, on top of the cost of the boiler itself. However, this is just an estimate, as the cost will be influenced by how complex the installation process is.

Finding the right installer

Before choosing a boiler installer, it’s essential to check that they are Gas Safe registered as only a Gas Safe heating professional is legally allowed to install, maintain, and repair gas appliances. Letting someone who is not qualified is illegal and highly dangerous.

Comparing quotes and installation costs

To make sure you are paying a competitive price for your Baxi boiler installation, remember to compare like-for-like quotes from at least 3-4 Gas Safe registered engineers. This will give you the chance to ensure you are being charged a fair price, and you can also ask for testimonials from their previous customers.

Baxi boiler warranties

Buying a new boiler is costly, so take time to compare warranties so you have peace of mind that should anything go wrong, the manufacturer will fix or replace it without additional costs.

Warranty coverage and duration

Baxi boilers include a 5, 7 or 10-year parts and labour warranty as standard, but warranties are only valid if you register your new boiler with Baxi and ensure it is serviced annually.

It’s important to make sure your boiler is serviced by a professional heating engineer every 12 months. Regular servicing helps maintain your boiler’s safety and efficiency, extending its lifespan. It also prevents wear and tear that could result in costly breakdowns, keeps heating bills low, and identifies minor issues before they turn into serious safety concerns.

How to extend your boiler warranty

Baxi boilers can be protected by a free parts and labour warranty of up to 10 years (depending on the model) when the installation is registered with Baxi within 30 days. Baxi also offers a range of service and repair plans designed to offer customers continuous support.

Baxi boiler reviews & customer feedback

Customer satisfaction and reliability

Customers consistently praise Baxi for their efficient service, skilled engineers, and reliable customer support. Engineers are noted for being punctual, professional, and effective at diagnosing and resolving issues, often with same-day or next-day appointments.

Common pros and cons from real users

While Baxi is praised for prompt service and skilled engineers, common complaints include long wait times for repairs, recurring boiler faults, and missed appointments.

Overall, Baxi faces criticism for slow response times and inconsistent service, leaving many customers frustrated.

Decision making tips for potential buyers

Key considerations before buying a Baxi boiler

Before installing a Baxi boiler in your home, remember to get quotes from at least 3 Gas Safe registered heating engineers. Comparing quotes will help you find the right boiler for your home and lifestyle at a fair price.

Comparing Baxi with other brands

Here we compare the leading Baxi combi boiler with comparable models from the other leading boiler brands.

Brand	Average price excluding installation	ErP efficiency rating	Warranty
Worcester Bosch Greenstar 4000	£1,200	A – 94%	Up to 10 years
Vaillant EcoTec Plus 832	£1,400	A – 89.4%	Up to 10 years
Alpha E-Tec NX Plus	£800	A	Up to 13 years
Viessmann Vitodens 100-W	£1,500	A – 94%	7-year parts & labour warranty
Baxi 600	£950	A	7-year parts & labour warranty
Glow-worm Energy	£1,100	A	Up to 10 years

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