Why service my Heat Interface Unit (HIU)

Servicing a HIU is crucial to ensure efficient performance, prolong its lifespan, and prevent costly breakdowns.

Servicing a HIU is crucial to ensure efficient performance, prolong its lifespan, and prevent costly breakdowns. HIUs are commonly used in district heating systems and communal heating setups, particularly in cities like London, where many apartments and buildings rely on them for heating and hot water.

Key Reasons to Service a HIU:
1. Maintain Efficiency & Performance
Over time, limescale and debris can build up, reducing heat transfer efficiency.
Regular servicing ensures your HIU operates at optimal efficiency, reducing energy waste and heating costs.

2. Prevent Breakdowns & Expensive Repairs
Components such as plate heat exchangers, pumps, and control valves can degrade if not maintained.
Early detection of faults can prevent costly emergency repairs or system failures.

3. Improve Hot Water & Heating Reliability
A poorly maintained HIU may cause delayed heating, fluctuating water temperature, or low water pressure.
Servicing ensures consistent and responsive heating and hot water supply.

4. Reduce Energy Bills
A clean and well-maintained HIU uses less energy to transfer heat efficiently, reducing consumption and lowering bills.

5. Prevent Limescale & Sludge Buildup (Especially in London’s Hard Water Areas)
Limescale and sludge accumulation can clog the heat exchanger and pipes, making the unit work harder.
A service includes descaling and flushing, improving longevity.

6. Ensure Safety & Compliance
Faulty HIUs can cause pressure issues, leaks, or overheating.

Landlords and building managers are often legally required to maintain heating systems to ensure tenant safety.