HIU servicing
Heat interface units photographed during servicing, showing the heat meter, circulation pump, heat exchanger and associated pipework.
View photos →HIUs & communal heating
Apartment not heating properly? We look at the HIU and the system around it.
Diagnosis, servicing and repair support for heat interface units, hot-water performance, valves, controls and communal-heating issues across London.
The outcome
Work out whether the fault is inside the flat or upstream.
HIU problems can originate from the unit, controls, flow conditions or communal system. Clear diagnosis prevents repeated part-swapping.
Good fault finding starts with the whole system, not a guessed part.
Share useful symptoms, fault codes and photos before the visit where possible.
Scope of work
How PureHeat can help.
01
HIU fault diagnosis
Heating, hot-water and intermittent performance faults.
02
HIU servicing
Planned checks and service tasks suited to the installed unit and system.
03
Plate heat exchangers
Investigation of scale, restriction and heat-transfer problems.
04
Valves & actuators
Control-valve, differential-valve and actuator issues affecting flow.
05
Pumps & controls
Associated pumps, thermostats and controls where they form part of the apartment system.
06
Block-wide support
Coordination with managing agents when the issue may involve communal distribution or central plant.
Systems covered
Equipment and components.
Heat interface unitsPlate heat exchangers2-port valvesActuatorsDifferential valvesPumpsThermostatsCommunal distributionStored hot water
Who this is for
Support that fits the property.
- Apartment owners
- Private landlords
- Managing agents
- Residential block managers
- Maintenance teams
Pricing
Clear starting prices.
HIU service / repair£110Service or initial call-out
Commercial / block workQuoteScope first
FAQs
Useful answers before you book.
Do you work directly for managing agents?
Yes. PureHeat supports individual flats and wider managed-property arrangements.
Can you service an HIU as well as repair it?
Yes. The booking route covers HIU servicing and initial fault diagnosis.
What if the problem is communal?
If evidence points upstream, the findings can be reported so the managing agent or plant-room team can take the next step.
Need an engineer?
Ready to arrange the right visit?
Send the postcode, appliance or system, symptoms and any useful photos. We will use that information to prepare properly.
Our work
A closer look at our work.
HIU servicing, photographed on site.