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Customer Support - Baxi

Customer Support

We are an award-winning service division and are here to provide support for the lifetime of your boiler.

Featured Article

Baxi is a leading manufacturer of heating and hot water solutions

Our solutions include Boilers, Air Source Heat Pumps (ASHPs), combined heat and power (CHP), heat interface units (HIUs), prefabricated plant rooms and skids, controls and digital applications.

In the UK and Ireland, Baxi has a portfolio of some of the best known and most respected brands in the residential and commercial heating industry - Remeha, Potterton Commercial, Andrews water heaters, and Heatrae Sadia.


Baxi is proud to have been manufacturing in the UK since 1866. From our award-winning customer support to our industry-leading hands-on training, we are fully committed to making life with Baxi as easy as possible.


We have a strong research and development platform and the financial strength of BDR Thermea Group means we make considerable capital investment to stay at the cutting edge of innovation. We are actively involved with designing products that will take us into the zero carbon future.


We employ over 1,200 people in the UK and Ireland and our manufacturing site is in Preston, close to where Baxi was first established in 1866.

Opening times

Monday to Friday

8am to 6pm

Saturdays and Bank Holidays

8:30am - 2pm

Baxi at Home Blog

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Heat Interface Unit (HIU) efficiency 

Using a twin plate HIU (indirect Heating & Domestic Hot Water) as an example, there are a few ways in which product efficiency can be measured. Read more..

Heat Interface Unit (HIU) pros and cons

Find out the pros and cons of Heat Interface Units (HIUs) here at Baxi FAQs...

How to reset pressure on my Heat Interface Unit (HIU)? 

Watch this video to find out how to reset pressure on my Heat Interface Unit (HIU)...

What is the price of a HIU (Heat Interface Unit)?

Average cost for a Heat Interface Unit (HIU) can be from around £800 to £1500, depending on the HIU type, performance of the unit and equipment provided.

What support is available in the design of my system?

Our Application Engineers can assist in advising clearances, dimensions, and possible locations for consideration. Find out more...

What support is available for installation / set up of the Heat Interface Unit (HIU)?

Baxi’s technical helpline supports you at every step of your installation & commissioning process. Find out more about training & enhanced warranty here.

How often does a Heat Interface Unit (HIU) need servicing?

Heat Interface Units (HIUs) have an annual maintenance requirement to ensure safe working and optimum performance. Find out more...

Are the Baxi AquaHeat HIUs compatible with our range of boilers, water heaters and cylinders?

At Baxi we have a broad range of products to help meet our customers needs. Find out if HIUs are compatible with Boilers, water Heaters, & Cylinders here.

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Baxi at Home Blog

Read on for lots of info, hints and tips about heat and hot water for your home, energy saving and the future of home heating.

User Guides

Looking for product literature? We have all the User Guides and Manuals you may need.