Think of a heat network as a big shared heating system. Instead of every flat having its own boiler, heat is created in one central place (like a plant room) and sent around the building through pipes.
This energy is used to provide heating and hot water to your home.
What does the HIU do?
Every flat has a Heat Interface Unit (HIU) — basically your home’s mini control centre. It:
- transfers heat from the building’s main system into your home
- includes a heat meter that measures exactly how much energy you use (in kWh)
What this means for you
- Your heating and hot water come from a shared central system, not a personal boiler.
- Your HIU makes the heat usable and safe for your home.
- The built-in heat meter records your actual usage, so your bills are accurate.
- Your Welcome Pack explains the exact setup for your development — systems can vary.
Note: This diagram shown is based on a standard gas-fed heat network with a remote data collection system, which records and reports meter readings daily. Some developments may use other methods of generation (for example, air-source heat pumps) or different technology. You can find details specific to your development in the Welcome Pack issued when your account is created.