Baxi Boiler Installation Guide

Baxi prides themselves on providing customers with highly-efficient and reliable boilers. The brand has been operating since 1866 and are committed to manufacturing energy-efficient boilers that are suitable for a range of different households. With a variety of Baxi boilers available, you should be able to find a model that is suitable for your home.

If you’re considering getting a Baxi boiler installed, we could provide you with the help and advice you need to make the right choices; whether it's helping you select a suitable model or a helping you access to a finance plan that suits your budget****. Baxi manufactures a wide range of boilers, each with unique and beneficial features, so don’t hesitate to contact us if you’re feeling unsure.


On this page we offer a comprehensive look at Baxi boilers, find out more about:



Why choose Baxi?

With over a century of experience, the Baxi brand has strived to develop a strong reputation for manufacturing their boilers with quality and energy-efficiency in mind. The brand has maintained a company ethos of pride, passion and positivity whilst also prioritising values of reliability and innovation. These core principles influence every decision made by the company when it comes to the manufacturing of their products, as they seek to exceed customer needs and expectations with every boiler.

Baxi has been recognised on numerous occasions for their service and products. Their achievements include winning the 2017 Heating and Ventilation News award for Heating Product of the Year with their Baxi 400 Combi boiler and being awarded for their customer service by the 2017 Gas Industry Awards.


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Baxi Boiler Types

Within the Baxi boiler models range, there is a range of different types of boilers, each with their own unique features and advantages. We have the skills and expertise to help you choose the most suitable boiler for your household. Taking your personal requirements into consideration, we’ll aim to ensure that your new Baxi boiler meets your needs both efficiently and cost-effectively. Baxi boiler types include:

Combi boilers

Baxi combi boilers are designed to deliver both heating and hot-water from one appliance, without the need for water storage tanks or cylinders. They tend to be compact in size which could be a great advantage if you don’t have a large amount of free space in your home. Baxi combi boilers are typically an ideal choice for most small and medium-sized households with one bathroom and a low to average demand for hot water.

System boilers

Baxi system boilers are designed to provide homes with efficient heating and hot water; using an additional cylinder for hot-water storage. There’s no need for an additional cold-water tank with a Baxi system boiler as their major components are already built-in. A Baxi system boiler could be a great choice for a home that has multiple bathrooms and a high demand for hot-water.

Regular/conventional boilers

The regular boilers manufactured by Baxi are designed to provide effective heating and hot water through the use of an additional hot-water cylinder and also a cold-water tank. If your home already has a traditional central heating system, one of Baxi’s regular boilers could be a suitable option for you as this could enable a quick and easy installation. Regular boilers are typically ideal for medium and large sized homes that have more than one bathroom and a higher than average demand for hot-water.


Selecting a suitable Baxi boiler for your home could be a difficult task; especially considering the wide range of boiler options that are available. Here at HomeServe, we understand how confusing choosing a new boiler can be and we aim to make the decision as simple as possible for you. So, to help you out, here’s a list of what the most popular Baxi boiler models are in our opinion:

1. Duo-Tec 24

  • Designed to provide comfortable heating and instantaneous hot water
  • Controls designed for ease of use
  • Energy Saving Trust Endorsed
  • 780mm x 450mm x 345mm (height x width x depth)
  • Typically best suited for most small/medium households with a low/average demand for hot-water.

2. Duo-Tec 28

  • Designed for easy installation and servicing
  • Stylish, contemporary design
  • Designed to be highly energy-efficient
  • 780mm x 450mm x 345mm (height x width x depth)
  • Typically best suited to most smaller households with a low/average demand for hot-water.

3. EcoBlue 24

  • Designed to be easily fitted into cupboard spacing
  • Designed to provide instantaneous hot-water
  • Hot water flow rate of up to 16.4 litres per minute for enhanced comfort and convenience
  • 700mm x 390mm x 295mm (height x width x depth)
  • Typically best suited to most small/medium homes with a low/average demand for hot-water.

4. EcoBlue 28

  • Energy Saving Trust Endorsed
  • Controls designed for ease of use
  • Option to wall-mount
  • 700mm x 390mm x 295mm (height x width x depth)
  • Typically best suited to most small/medium homes with a low/average demand for hot-water.

Cost of installing a Baxi Boiler

“How much could it cost to install a new Baxi boiler?” – This is likely to be one of the first questions on your mind if you’re considering getting a new Baxi boiler installed. There is no definite answer to this question as Baxi boiler prices are dependent on factors such as the model you choose, its size and the complexity of the installation process.

new boiler installation often seems expensive at first, but it’s important that you remember that the quality of your home’s heating is an important and valuable investment. Additionally, you should always ensure that the engineer conducting your installation is Gas Safe registered as this ensures that they are legally qualified to work on gas appliances; allowing the installation to be completed safely and accurately. Rest assured that all of our HomeServe engineers are Gas Safe registered, so they have the skills and knowledge needed to provide you with a first-class installation.

Why not try our free online quote tool to receive an estimate of new boiler prices including installation? We take into account factors such as your budget, central heating requirements and home size in order to provide you with an accurate quote based on the information you provide. You could have your free no-obligation quote!

It's our goal to make it as easy as possible for you to pay for your new boiler. That's why we aim to offer access to flexible finance options to help you take control of the way you pay**. Visit our Access to Finance Packages page or try our free quote tool to find out more****.


Baxi Boiler Range

Baxi manufactures a diverse range of boiler systems in order to cater to a wide variety of households with different spacing, requirements and conditions. Here are some examples of the ranges that they supply:


This range of Baxi combi boilers is efficient enough to provide you with heating and instantaneous hot-water and compact enough to potentially fit into your kitchen cupboard. With controls that are designed to be easily used, Baxi designed this range with convenience and energy-efficiency in mind.


Endorsed by the Energy Saving Trust, this boiler range could provide you with a highly-efficient means of heating your home. With a SEDBUK rating of A, a boiler from this range could lower your energy wastage and thus reduce your energy bills**!

EcoBlue Advance

These regular boilers are compact in size and don’t require any extra wires, designed to enable a hassle-free installation! Additionally, with front and side access to the system, it could be a quick task for a Gas Safe engineer to conduct a service on one of these boilers.


With controls that are designed to be easy to use, this set of Baxi system boilers could provide you with a convenient method of heating your home. Baxi manufactured these boilers to have high-efficiency and exceptional performance, so installing one of these energy-efficient boilers into your home could significantly enhance your comfort levels.


Which Baxi boiler do I need in my home?

The varied range of boilers available from the Baxi brand could make it difficult to decide which option is best for you. We’re here and happy to advise you throughout your new installation journey; from helping you make a choice to conducting a thorough and professional installation.

When choosing your new Baxi boiler, we recommend that you first consider factors such as your budget, the space available in your home as well as your hot water and heating usage. You should also consider the kW output that your home is likely to require. This refers to a boiler’s ability to cope with your household’s hot water and heating demands and is generally reliant upon the number of bathrooms and radiators within your property.

We could provide you with a fixed-price quote to give you an idea of the type of boiler that could be suitable for your home***. Try our free quote tool today!

Here’s some extra information to aid you with your decision. This estimated guide of kW outputs should give you some added insight into the type of Baxi combi boiler you could need for your home:

24-27kW 1-2 bedroom, 10 radiators, 1 bathroom
28-34kW 3-4 bedroom, 15 radiators, 1-2 bathroom
35-42kW 4+ bedroom, 20 radiators, 2+ bathroom

(This information has been supplied By Help-Link UK limited and has been produced for information purposes only and should not be used or relied upon as a substitute for professional advice by a suitably qualified engineer.)

Visit our regular and system boiler pages to find out about the kW outputs that could be suitable should you choose to get a different boiler type installed.


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Baxi warranty

A boiler warranty could provide you with added peace of mind that should a fault occur with a component within the boiler, the manufacturer could be liable to replace or repair the part without cost to you†. Baxi boilers typically come with a manufacturer-backed warranty of up to 7 years (depending on the boiler model) and could provide you with cover for parts that are faulty from the date of manufacture or parts integral to the boiler; this could include the controls. Terms and conditions apply with all warranties and may be subject to change at any time, so ensure that you check through them thoroughly or contact us if you’d like to learn more about Baxi boilers warranties†.

Baxi service and repairs

If your boiler is within its warranty period, you will most likely be required to organise an annual service†. During this your Gas Safe engineer will conduct checks to ensure that your boiler is functioning in a safe and efficient manner without any existing or potential faults. Maintaining your boiler could also potentially help extend its working life, so arranging a service could prove to be significantly beneficial to you in the future!

Whilst your boiler is in warranty, you can contact Baxi directly in the event of a boiler breakdown or fault. Alternatively, you can contact us and we could help to get your boiler back up and running as quickly as possible.

*5% online discount is available to domestic gas and LPG customers who receive an online quote for all boiler brands excluding the Ideal Logic HE24, HE30, HO15 & HO18 and Worcester Bosch 25i ERP, 30i ERP, 15ri & 18ri boilers which qualify for the winter bundles offer. £50 additional discount available on all like-for-like system swaps and a £100 additional discount is available on conventional to combi, and combi to conventional boiler swaps. Online discounted price is only available for the duration of the 14-day quote validity which starts from the day the quote was given. Help-Link UK Ltd include a filter as part of your quote as this is highly recommended by the boiler manufacturer as a key component in maintaining boiler health, functionality and may potentially be looked upon favourably by manufacturers when assessing warranty work. This filter can be removed at the customer's request. Quote also includes a programmable thermostat for all combi boiler installations as this is a legal requirement as part of the Boiler + legislation introduced 6th April 2018, and cannot be removed from the installation unless; it is replaced with an alternative smart thermostat; or another energy saving measure as listed in the Boiler + legislation or if a smart thermostat already exists within the property. Alternative thermostats, including smart thermostats are subject to an additional charge.

** Source: Saving calculated when replacing G rated with A rated boiler in a semi-detached house.

*** Exclusions apply. See

****Credit is subject to status, affordability assessment and credit checks. Interest-free credit is available over 2 years on all boiler makes. Credit is also available across 36-120 months at 9.9% APR. Finance can be taken out with or without deposit and capital payments can be made at any time to reduce your loan.

 Subject to an annual service at the customer's expense. Warranty extension from 5-years to 10-years only available on Worcester Bosch and Ideal gas boilers and may be subject to an additional charge.