What is a Heat Interface Unit (HIU)?

The Heat Interface Unit, or HIU, is an appliance installed within an apartment. Its role is to distribute the energy generated by a central plant room or remote district heating system, providing domestic hot water and space heating on demand. They can be configured to suit each project's layout, service connections and spatial requirements.

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

What outputs are the Baxi AquaHeat range available in?

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

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

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.

What approvals and certification does the Baxi AquaHeat range hold?

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

What is VWART?

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

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

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

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