HIU Installation London — Heat Network Specialists
Specialist HIU installation for new builds, refurbishments and unit replacements across London. We supply and commission all major HIU brands — Danfoss, SAV, Switch2, Caleffi, Alfa Laval and more — to the precise specifications of your heat network.
Quick answer
HIU installation in London starts from around £1,950 for a standard residential unit, depending on brand, access and complexity. Collide Group is a Gas Safe registered, WRAS-certified Heat Interface Unit specialist based in Northolt, installing and commissioning all major HIU brands across Greater London with a 5-year workmanship warranty and full heat-network documentation.
Done Wrong, It Costs Years
An HIU fitted incorrectly — wrong differential pressure settings, under-sized plate exchanger, poor pipe routing — will underperform from day one and fail early. HIU installation is specialist work that requires heat network experience, not just a plumbing qualification.
- Incorrect PICV settings causing under-supply
- Wrong plate exchanger selection
- Inadequate primary flow rate
- Poor commissioning — wrong temperature parameters
- Non-compliant pipework and terminations
- Missing or incorrect documentation for heat network operator
Specialist Installation, Properly Commissioned
We work with heat network operators, developers and property managers to deliver installations that meet the network's design requirements from day one.
- HIU selection and sizing based on your heat network specs
- Full unit supply or install-only on your procured unit
- Correct PICV, actuator and plate exchanger commissioning
- Primary and secondary hydraulic balancing
- Integration with BMS or metering systems where required
- Commissioning documentation and certification
- Post-installation performance verification
- 5-year warranty on installation work and pipework
- 12-month warranty on all parts supplied and fitted
- Warranty documentation included in handover pack
Brands We Install
Related HIU work in London: HIU Repair London · HIU Service London · Bulk Servicing London · HIU Powerflush London
The Benefits
Right First Time
Correct sizing, commissioning and documentation mean the unit performs to specification from day one.
5-Year Warranty
5-year warranty on all installation work and pipework. 12-month warranty on all parts supplied and fitted.
Warranty Protected
Manufacturer-trained installation keeps your manufacturer warranty valid and documentation audit-ready.
Future-Proof
We factor in your building's heat demand and future load growth — not just today's minimum.
“Collide Group installed a new HIU in our building. The work was completed on schedule, to a high standard, and with minimal disruption to residents.”
— Managing Agent, Wandsworth
5-Year Warranty
All installation work and pipework covered for 5 years. If it fails due to our workmanship, we fix it.
12-Month Parts Warranty
All parts we supply and fit carry a 12-month warranty. Same part fails — we replace it at no charge.
Installation from £1,950
Prices vary by brand, complexity and access. We provide a free written quote for every installation project. No obligation.
Request a Free QuoteFrequently Asked Questions
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Related HIU Services
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