Professional HIU Servicing
in London
Fixed-price HIU servicing for residents, landlords and managing agents across London. Choose from Standard, Advanced or Premium service options, all carried out by specialist HIU engineers with PDF reporting after the visit.
What is included in our HIU service?
Our HIU service is designed to improve performance, reduce the risk of breakdowns and highlight worn components before they fail. We follow a structured servicing process and issue a digital PDF service report after the visit.
- Primary filter or strainer clean
- Visual inspection for parts functionality and leaks
- Hot water performance test
- Heating performance check
- Pressure top up
- Basic electrical safety checks
HIU service packages
Choose the level of servicing that suits your system. All packages are carried out by HIU specialists and priced clearly before the visit.
Standard
Ideal for routine annual HIU servicing and general condition checks.
- HIU service certificate (PDF) ✓
- Primary filter or strainer clean ✓
- Leak and corrosion inspection ✓
- Hot water performance test ✓
- Heat meter functionality test ✓
- Communal flow verification ✓
- Expansion vessel health check ✓
- DPCV or PICV calibration ✕
- System inhibitor top-up ✕
Advanced
A more detailed HIU service with deeper checks and performance-focused testing.
- Includes Standard service items ✓
- DPCV or PICV calibration ✓
- Heat meter and flow logging ✓
- Isolation valve operation check ✓
- Electrical safety and earth test ✓
- Cylinder health check ✓
- System inhibitor top-up ✕
- Radiator venting and balancing ✕
- UFH manifold maintenance ✕
Premium
Best for systems needing broader balancing, calibration and deeper performance checks.
- Includes Advanced service items ✓
- System inhibitor top-up ✓
- Radiator venting and balancing ✓
- Underfloor heating calibration ✓
- Sealing washer replacement ✓
- Actuator stress testing ✓
- Full thermal imaging audit ✓
Combined HIU & MVHR servicing
Save time and reduce callout disruption by booking your HIU and MVHR service together. We also offer a group booking system where we provide a project code that you can share with residents or neighbours, allowing them to book their own preferred day and time slot and reschedule if needed. This removes admin work for managing agents and makes larger bookings much easier to organise.
Book Combined ServiceGroup and block discounts
Preferential fixed pricing is available for multiple HIU service bookings in the same building. Ideal for block managers, landlords and coordinated resident bookings.
2 to 5 Units
6 to 9 Units
10 Plus Units
What our customers say about our HIU service
Reviews from residents and property professionals across London who booked HIU servicing with our engineers.
HIU service FAQs
How often should a HIU be serviced?
Most HIUs should be serviced every 12 months to help maintain performance, reduce energy waste and lower the chance of unexpected breakdowns.
Will I receive a service certificate?
Yes. After the service, we provide a PDF HIU service report and certificate. Where relevant, this can also include photos and notes on any faults found.
Do you service different HIU brands?
Yes. We work on a wide range of HIU makes and models used across London developments, including common systems found in residential blocks and apartments.
Book your HIU service
Our office will review your request and contact you to confirm the appointment. Fixed-price options available across London.