HIU Service Packages

All the basics covered—so your HIU keeps running smoothly.

Thorough visual check of your HIU to spot any obvious issues or leaks.
Cleaning of the primary strainer to help your system run more efficiently.
Temperature checks on your heating and hot water.
Top up heating pressure if required.
Basic preventative fault diagnosis to help identify any problems early and advise on parts if needed.
Manual venting of all your radiators or underfloor heating manifold to improve heat flow.
Clear, detailed job report so you know exactly what was checked and done. Including recording HIU make, model, serial number and type.
Need more than one unit serviced? Group bookings available at discounted rates – ideal for apartment blocks or multiple homes in one visit!
Excluding any repair or parts.

The works—deep cleaning, fine-tuning, and peace of mind.

All services from our Essential package – including visual inspection, cleaning of the primary strainer, temperature checks, pressure top-up, radiator venting, and a clear job report.
Cleaning the secondary strainer to help prevent future blockages.
Meter health check – making sure your heat meter is installed correctly, working as it should, and accurately measuring usage.
Expansion vessel test for pressure and repressurise if required.
Inhibitor level test to check if your system water is protected against corrosion.
Servicing of valves inside the HIU.
Repair of minor leaks to stop small issues becoming big problems.
Fine-tuning of hot water and heating temperatures for comfort and efficiency.
Pump setting adjustments (if required) to improve system flow and performance.
Need more than one unit serviced? Group bookings available at discounted rates – ideal for apartment blocks or multiple homes in one visit!
Excluding any repair or parts.

Maximum care for maximum comfort—your HIU, fully optimised.

All services from our Essential & Complete packages – including full system inspection, strainer cleaning, pressure checks, temperature adjustments, radiator venting, minor leak repair, valve servicing, and much more!
Manufacturer-specific service for Evinox Modusat HIU systems.
Top up of inhibitor levels (if needed) to protect your system from scale and corrosion.
In-depth fault finding across your HIU and connected controls—such as thermostats, programmers, and pumps.
Cleaning of the plate heat exchanger (if needed) to improve water flow and energy efficiency.
Replacement of worn washers to keep your system watertight.
Full reporting on heating and hot water flow rates and system efficiency.
Full operational check of all radiators and heating zones to ensure even, reliable heat throughout your home.
Need more than one unit serviced? Group bookings available at discounted rates – ideal for apartment blocks or multiple homes in one visit!
Excluding any repair or parts.

Fast, expert help—when your HIU needs it most.

Our call-out charge covers up to 3 hours labour to investigate and repair any HIU fault.
No travel charges – you pay for up to 3 hours at your home.
Nationwide team of manufacturer trained technicians so you’re in the right hands.
If your repair will take longer than 3 hours, or requires parts, we will provide a fixed cost repair option.
All replacement parts are manufacturer supplied or of the same standard.
Excluding any parts or labour above 3 hours.