Heat Interface Units or HIUs are found on most newer district heating systems across apartment blocks and residential areas throughout London. These units link the main boiler plant to individual flats/devilments allowing heating and hot water to be delivered when needed. Over time faults can occur with HIUs as they are mechanical components however London-based HIU service specialists are on hand to help.
Specialist Heat Interface Unit maintenance companies provide HIU repair London and HIU repair services to landlords, housing associations and private homeowners across the UK. In this article we cover some of the most common problems with HIUs and how our engineers can rectify them quickly and safely.
No Hot Water or Intermittent Hot Water
Nothing frustrates residents of apartment blocks more than having no hot water or fluctuating water temperature when taking a shower. You turn on the tap and either get blasted with cold water or hit by sudden changes in temperature.
Professionals carry out comprehensive checks to diagnose the problem. They could clean the heat exchanger of any lime scale build up, flush out the internals of the unit, recalibrate the thermostat and check that the pressures are correctly matched. Sometimes a service can prevent total unit breakdown.
If parts are faulty and need replacing then HIU repair experts can source parts approved by the manufacturers to get your hot water flowing regularly.
Heating Not Working Properly
Sometimes there isn’t enough heating or your radiators aren’t warming up uniformly. There are many reasons why this can happen including:
- Faulty or stuck control valves
- Air lock
- Circulation pump failure
- Incorrect settings
Performance tests carried out by professional engineers providing HIU service technicians will check flow rates along with valve operation and thermostat performance. They will bleed any air from the system, test actuator valves and check the pump is working efficiently.
If a valve or pump is faulty, replacement can be carried out quickly by HIU repair engineers so as to cause as little disruption as possible for residents, who want heat especially during winter months.
Scale Build Up On Plate Heat Exchangers
The UK has hard water which can cause scale to build up on your heating system. The longer it goes the worse it becomes as scale collects in the small channels of the plate heat exchanger.
HIU repairs experts sometimes have to advise customers to replace the heat exchanger to bring the machine back to peak performance.
Heavy scale can only really be avoided by annual servicing.
Complete HIU Failure
At other times, your HIU can fail completely. When this happens, it can affect the heating and hot water in several flats or buildings.
If your HIU has stopped working and you need an emergency repair, HIU repair companies can send an engineer out to your property immediately. They will be able to diagnose whether your pump has stopped, there is an electrical issue or the internal elements have failed.
Companies specialising in HIUs know how inconvenient an outage can be and will get your system up and running as soon as possible.
Preventative maintenance HIU REPAIRS AND MAINTENANCE LTD can save you time, money and stress. Ensure yours always works when you need it with regular maintenance and any necessary repairs done by a team who specialises in HIUs.
