What the service covers
Shared systems
A block system has central equipment and pipework that every flat depends on. We maintain the communal boilers and the central plant, and check the controls, so the whole system keeps working.
Heat interface units
On many communal systems each flat has a heat interface unit (HIU) in place of its own boiler: it takes heat from the communal system for the flat’s heating and hot water. HIU servicing checks the unit’s valves, filters and controls, so a fault in one flat is found and put right.
Planned maintenance
Regular maintenance helps to spot problems early. We agree a schedule with you and keep a record of each visit. A planned maintenance contract can put the communal plant, the HIUs and the annual gas safety inspection on one schedule.
Heat networks and the new rules
This is general information for block managers, not legal advice. Ofgem began regulating heat networks in Great Britain on 27 January 2026, including communal heating in blocks of flats. The rules protect the people who receive the heat: fair treatment, clear and transparent information, a reliable service and fair prices. Operators that are deemed authorised must register with Ofgem by the end of January 2027.
Whether and how the rules apply to your building is for you to confirm with Ofgem’s guidance or your own advisers. In practice, a dated record of each maintenance visit, and of the condition of the plant, helps an operator show that the system is looked after. We give you that record after every visit. It is a record of the work, not a statement that the network meets the rules.
Breakdowns
If the communal heating fails, call the number on this page. The engineer finds the fault and puts it right, or explains what is needed and quotes for it.
Who it is for
Managing agents, block managers, freeholders, housing providers and resident management companies responsible for a communal heating system or heat network that serves a whole block.
What you get
- Planned maintenance of communal boilers, pumps and controls
- Servicing of heat interface units (HIUs) in the flats
- Fault finding and repair
- A dated record of each visit and of the condition of the plant
- Work carried out by Gas Safe registered engineers