What approvals and certification does the Baxi AquaHeat range hold?

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


The AquaHeat HI / HWI range of products have also been tested by Enertek to the BESA Technical Standard – results can be found in the AquaHeat specification guide. The Baxi AquaHeat range boasts extremely low VWART figures and has achieved Best Practice in over half of the BESA tests. 


To see a full list of standards to which the product is certified and tested, please consult the installation manual.

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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