What is a heat interface unit?

It is easy to delve into the innovation behind heat interface units, but what are they and how do they work?

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What is a heat interface unit?

A heat interface unit looks like a traditional combi boiler and enables heat from a heat network, district heating scheme or communal energy scheme to be distributed throughout the home. They are typically wall-mounted and are also called a HIU, Heat Stations or Hydraulic Board.

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What do heat interface units supply?

Heat interface units, like Vital Energi’s vTherm˚ range of HIU’s can supply domestic hot water (DHW) and heat for radiators within the home or underfloor heating. Typically, there are two categories of heat interface unit; those that only supply and control heating and units that supply and control both heating and domestic hot water (DHW).

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How does a heat interface unit work?

A heat interface unit (HIU) in a home acts as a pressure break between an energy centre distribution network and the end user. Heat enters the home through insulated pipes that run from the central energy source (energy centre or boiler plant) into the heat interface unit. Inside the HIU heat plate exchangers transfer the heat from the central system into instanteous heating and hot water.

Frequently asked questions

What are the benefits of having a HIU on a heat network?

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