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

The Baxi AquaHeat Heat Interface Units (HIUs) contain a full electronic control system, using our in-house designed TR-04 controller. Full specifications of the control system can be found in the AquaHeat Specification Guide, however some Key Functions are: 


  • Suitable for all temperature concepts
  • DHW priority with feed forward concept
  • Adaptive control technology including Eco, Dynamic and Comfort modes
  • Keep warm functions with fast acting DHW response

Take a look at Baxi's AquaHeat HIU 

For homes fed with heat from a heat network, the Baxi AquaHeat is the answer to your apartment’s heating and hot water requirements. Perfectly suited to supply heat to communal and commercial premises in your development.

Related FAQs

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...

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