Does a Heat Interface Unit (HIU) use gas or electricity?
There is no gas connection required with an Heat Interface Unit, the energy required for heating and hot water is taken from the heat network. The HIU will require a direct electrical supply to operate is key components i.e. on-board controls, valves and circulating pumps.
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.