FAQs

Question 1

Do I have to be F-Gas certified to fit an Air Source Heat Pump?

Accepted Answer

Monobloc style air source heat pumps contain a hermetically sealed refrigeration circuit and do not require F-Gas certification to install.

Question 2

Do I have to be Gas Safe registered to install an Air Source Heat Pump?

Accepted Answer

A competent knowledge in plumbing and heating is all that is needed as a prerequisite for the NVQ Level 3 Heat Pump Installation qualification. Read more...

Question 3

What is the Boiler Upgrade Scheme (BUS)?

Accepted Answer

Find out what Boiler Upgrade Scheme (BUS) is and how it works at Baxi FAQs section...

Question 4

Why such a big push to install Air Source Heat Pumps now?

Accepted Answer

Find out why there is such a big push to install Air Source Heat Pumps now...

Question 5

Who needs to know, when installing an Air Source Heat Pump?

Accepted Answer

Who needs to be informed when installing an Air Source Heat Pump? Find out the lost of people/authorities here...

Question 6

What is a monobloc Air Source Heat Pump (ASHP)?

Accepted Answer

Monoblocs are self-contained heat generators. All the hydronic, refrigeration & electrical components are inside the casing, similar to a boiler. Read more

Question 7

Heat Interface Unit (HIU) efficiency

Accepted Answer

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..

Question 8

Heat Interface Unit (HIU) pros and cons

Accepted Answer

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

Question 9

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

Accepted Answer

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

Question 10

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

Accepted Answer

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.

Question 11

What support is available in the design of my system?

Accepted Answer

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

Question 12

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

Accepted Answer

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

Question 13

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

Accepted Answer

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

Question 14

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

Accepted Answer

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.

Question 15

Does the Baxi AquaHeat range come with any remote monitoring or control capabilities?

Accepted Answer

Yes, all Baxi AquaHeat models are compatible with our Baxi Data Management, Mercurius platform. Find out more about all the functionality it has to offer.

Question 16

What type of control system is used on the Baxi AquaHeat range?

Accepted Answer

Baxi AquaHeat HIUs contain a full electronic control system, using our in-house designed TR-04 controller. Some Key Functions can be found here...

Question 17

In what lead time are the Baxi AquaHeat range products available?

Accepted Answer

Baxi AquaHeat range & associated accessories & controls are available on an 8-week lead time. Baxi can also manage a phased delivery depending on project.

Question 18

What accessories do I need for my Heat Interface system?

Accepted Answer

The full list of compatible accessories required for your Heat Interface system can be found here...

Question 19

What is VWART?

Accepted Answer

VWART stands for Volume Weighted Average Return Temperature. Read more about it in our Baxi FAQ section...

Question 20

What approvals and certification does the Baxi AquaHeat range hold?

Accepted Answer

Baxi AquaHeat range of Heat Interface Units (HIUs) are all compliant with UK Water Regulations & Bylaws, with the certification carried out by NSF. Read more

Question 21

What primary (Heat Network) conditions are the AquaHeat HIUs suitable for operating at?

Accepted Answer

The AquaHeat range of HIUs can operate with primary temperatures from the Heat Network up to 90°C and maximum primary operating pressures of 16 bar.

Question 22

What temperatures can the Baxi AquaHeat Heat Interface Units (HIUs) operate at?

Accepted Answer

The Baxi AquaHeat Heat Interface Unit (HIU) range can provide space heating from 15 to 85°C. The AquaHeat HI / HWI models can provide DHW from 40 to 65°C.

Question 23

What outputs are the Baxi AquaHeat range available in?

Accepted Answer

Baxi AquaHeat HI/HWI is available in two different outputs, available with or without a Heat Meter and the Mercurius connected module factory fit. Read more

Question 24

What types of HIU are available as part of the Baxi AquaHeat range?

Accepted Answer

With two models, the Baxi AquaHeat Heat Interface Unit (HIU) range can meet the needs of most apartment building developments. Find out more...

Question 25

What applications are Heat Interface Units (HIUs) suited for?

Accepted Answer

Through these various product types, HIUs are suitable for residential and commercial applications as well as providing heat for communal spaces. Read more

Question 26

Does a Heat Interface Unit (HIU) use gas or electricity?

Accepted Answer

There is no gas connection required with an Heat Interface Unit. Energy required for heating and hot water is taken from the heat network. Find out more...

Question 27

How does a Heat Interface Unit (HIU) work?

Accepted Answer

FAQ Description/Answer Here

Question 28

What is a Hydraulic Interface Unit (HIU)?

Accepted Answer

Find out what an Hydraulic Interface Unit or HIU is at our Baxi FAQ's section...

Question 29

What is a Heat Network?

Accepted Answer

Find out what heat networks are and different types of heat networks at our Baxi FAQ's section...

Question 30

Where can I get a quote? How to buy?

Accepted Answer

Contact your expert Technical Sales Manager to buy a heating solution. Dealing direct with us means you get exactly what you need when you need it.

Question 31

How can I correctly size my commercial heating or hot water solution?

Accepted Answer

Correct sizing is essential to maximise the performance and efficiency of your commercial product. Find links to specification guides and TSM contacts here

Question 32

How can I find technical information about a product?

Accepted Answer

Find technical information about the products in our specification guides & technical sheets here. Contact our technical department for further expertise.

Question 33

How to find out a commercial product part availability?

Accepted Answer

Looking for spare parts for your commercial products? Simply contact our spare parts team for more information. Most parts will be sent out the next day.

Question 34

How can I get training on a commercial heating product?

Accepted Answer

We offer a range of CIBSE certified CPD courses and more detailed commercial product training courses. Visit our training page to find out more and book...

Question 35

How can I find efficiency figures for commercial heating and hot water products?

Accepted Answer

All our efficiency figures for our products can be found in our specification guides and technical sheets in our Literature library. Find out more...

Question 36

How do I connect My Baxi app to my Alexa?

Accepted Answer

Learn how to connect My Baxi app to Alexa. Once you've linked your uSense to Smart Home device, you can ask Alexa to announce or set the Room Temperature.

Question 37

What are the different hot water settings and how do I change them?

Accepted Answer

Learn the different hot water settings and how to change them at Baxi FAQ section here...

Question 38

How do I set up holiday mode?

Accepted Answer

During Holiday mode, the heating temperature will be set to ‘anti-frost’ to protect your home from frozen pipes in cold weather. Learn how to get started.

Question 39

How can I set the schedule for my central heating?

Accepted Answer

The existing central heating schedules should have been migrated over from your old uSense app. If you need to change them, follow the instructions here...

Question 40

How can I set the temperature for my hot water?

Accepted Answer

Want to set the temperature for hot water? Here are the instructions. Remember to set between 50-60 degrees Celsius for a combi boiler. Find out more here.

Question 41

How do I refresh the dashboard page on the app?

Accepted Answer

Want to refresh the dashboard page on the My Baxi app? Pull down the home screen until the ‘refresh’ icon appears.

Question 42

How long does a Boiler last?

Accepted Answer

Find answers to how long does a boiler last, when does a boiler need replacing, and how you can make my boiler last longer here...

Question 43

How long is the warranty on a Baxi Boiler?

Accepted Answer

Find answers to Boiler warranties, warranty cover, if warranties can be transferrable and how a Baxi boiler warranty work here at Baxi FAQs...

Question 44

How do I set up my new My Baxi app for my uSense smart control?

Accepted Answer

All the information on your old uSense app should be migrated automatically on My Baxi app. Simply follow the steps or watch our video to complete setup.

Question 45

What happens at a Boiler service?

Accepted Answer

Make sure the installer who carries out your service is Gas Safe registered. Find out what the engineer will check for and how long the service takes...

Question 46

Do I need a carbon monoxide detector fitted?

Accepted Answer

For you and your family's safety, it is advisable to fit a carbon monoxide alarm in each room in your home that has a gas appliance or solid fuel heating.

Question 47

Are there grants available for Air Source Heat Pumps?

Accepted Answer

Different areas may offer different grants to help you with the cost of installing an air source heat pump. Find out if you are eligible on this page.

Question 48

What is the Boiler Upgrade Scheme?

Accepted Answer

Find out everything you need to know about Boiler Upgrade Scheme and if you eligible for the Boiler Upgrade Scheme.

Question 49

Should I turn off my Boiler in the summer?

Accepted Answer

Is it ok to turn off your boiler in summer? The short answer is: it depends on your home and your circumstances. Find out more...

Question 50

Why should I have a filter fitted?

Accepted Answer

Many boiler breakdowns occur are due to sludge in the heating system. Find out the many benefits of fitting a magnetic filter & how it can save you money.

How to thaw a frozen Boiler condensate pipe

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FAQs

Do I have to be F-Gas certified to fit an Air Source Heat Pump?

Do I have to be Gas Safe registered to install an Air Source Heat Pump?

What is the Boiler Upgrade Scheme (BUS)?

Why such a big push to install Air Source Heat Pumps now?

Who needs to know, when installing an Air Source Heat Pump?

What is a monobloc Air Source Heat Pump (ASHP)?

Heat Interface Unit (HIU) efficiency

Heat Interface Unit (HIU) pros and cons

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