District Heating Systems

What is a HIU System and How Does it Work?

Heat Interface Units (HIUs) serve as a crucial link between central boilers and the heating and hot water systems within individual properties. Typically installed in large apartment blocks, a single central boiler system—often referred to as an energy centre—supplies heating and hot water to the entire building. This approach not only reduces costs but also optimises the use of space within each flat.

The hot water generated by the central boiler system is transferred via heat exchangers to provide each apartment with on-demand heating and hot water. HIUs can also be integrated with other renewable technologies, such as solar PV or air-source heat pumps, to enhance efficiency and sustainability.

HIU Maintenance by Qualified & Experienced Professionals

At Roberts & Son, we offer both planned maintenance and operations and maintenance (O&M) contracts for Heat Interface Units. As part of these packages, one of our qualified and experienced engineers will visit your property to perform a comprehensive annual service on your HIU. We also provide reactive and emergency repair services.

In addition to reactive call-outs for clients on our maintenance contracts, we are also available for emergency repairs for non-contractual clients.

Whether you are a private individual, a commercial business, or responsible for managing a portfolio of HIU units, our dedicated team is here to assist you with all your servicing and maintenance needs. Contact us today for expert support!