Heating

 A Heat Interface Unit (HIU) is a device used in centralized heating systems, such as district heating networks, to distribute hot water and heating to individual apartments or rooms in larger buildings. HIUs connect to a central heat source, like a boiler, and use heat exchangers to transfer energy to the internal heating and hot water systems of each dwelling. Essentially, an HIU acts as a bridge between the communal system and individual units, providing space heating and hot water on demand.

The key advantages of using an HIU include improved energy efficiency, reduced carbon emissions, and lower maintenance costs since repairs are concentrated in the central system rather than each dwelling. HIUs also give residents more control over their heating and water usage, making energy consumption more visible and manageable​

These units are commonly installed in multi-dwelling buildings like apartment complexes, universities, and commercial structures. They also support compliance with low-carbon energy solutions like renewable sources.