HA1 · HA2 · HA3 · HA5 · HA7
HIU & MVHR Engineers Harrow
Specialist Heat Interface Unit and MVHR service, repair and installation across Harrow. Same-day emergency HIU repair available throughout HA1, HA2, HA3, HA5, HA7.
Quick answer
Collide Group provides HIU service from £120 and MVHR service from £120 across Harrow, with emergency HIU repair from a £120 call-out and same-day attendance available. We are a WRAS-certified Heat Interface Unit and ventilation specialist based in Northolt, covering HA1, HA2, HA3, HA5, HA7 and all surrounding areas.
Trusted HIU & MVHR Engineers Across Harrow
Harrow's residential development has centred on Eastman Village — the redevelopment of the former Kodak factory site in Wealdstone, one of the largest regeneration schemes in north-west London — along with continuing development around Harrow town centre. These new blocks are served by communal heating with a Heat Interface Unit in each flat.
Collide Group provides specialist HIU and MVHR service, repair, installation and powerflush across the whole Harrow borough, from the new apartments at Eastman Village to established blocks in Pinner, Stanmore and Rayners Lane.
HIU & MVHR Services in Harrow
HIU Servicing
Annual HIU service from £120. Full checklist, written report, all major brands covered.
Learn moreHIU Repair
Emergency and same-day HIU repair across Harrow. Fault diagnosis and first-visit fix.
Learn moreMVHR Servicing
MVHR service from £120. Filter change, heat exchanger clean and airflow rebalance.
Learn moreMVHR Repair
Noisy, leaking or dead MVHR unit? Fault diagnosis from a £120 call-out.
Learn moreHIU Installation
New build and replacement HIU installation. All major brands supplied and commissioned.
Learn moreHIU Powerflush
Full system powerflush to remove sludge and scale. Restores efficiency and flow rates.
Learn moreBulk Servicing
Block-wide contracts for Harrow property managers. Discounted multi-unit rates.
Learn moreFree Quote
Not sure what you need? Call or message us and we will advise and quote free of charge.
Learn morePostcodes We Cover in Harrow
- HA1 — Harrow, Greenhill
- HA2 — North Harrow, Rayners Lane
- HA3 — Wealdstone, Kenton, Harrow Weald
- HA5 — Pinner, Hatch End
- HA7 — Stanmore
HIU & MVHR Engineering in Harrow — A Local Guide
Eastman Village is reshaping Wealdstone, delivering thousands of new homes on the 55-acre former Kodak site. Like most large modern developments, it is built around a communal heating network — so residents have an HIU in a utility cupboard rather than a boiler, and it needs annual servicing to keep working properly.
Harrow sits in a hard-water part of London, which makes limescale a recurring theme in the HIU faults we attend — scaled plate heat exchangers gradually weakening hot water performance, alongside blocked strainers and sticking valves. Brands across the borough include Danfoss, SAV, Caleffi and Switch2.
The Eastman Village apartments and other recent Harrow developments use MVHR for ventilation. Filters need changing every 6 to 12 months and the unit needs an annual service — without it, airflow drops and condensation and mould follow. We service MVHR from £120, and can do it alongside your HIU service.
Where We Work in Harrow
Brands We Cover
HIU: Danfoss, SAV, Caleffi, Switch2, Alfa Laval, Heatweb, Thermal Integration and Redan. MVHR: Vent-Axia, Nuaire, Titon, Zehnder, Vaillant, Brink and EnviroVent.
Response Times
Same-day emergency response available across Harrow. Routine service appointments typically within 1–3 working days.
Common Faults
Weakening hot water from limescale build-up, no hot water, pressure loss and noisy pipework are our most common Harrow callouts, plus MVHR filter and airflow issues in the newer Wealdstone developments.
FAQs — HIU & MVHR Engineers Harrow
Do you cover all Harrow postcodes?
Do you work on HIUs at Eastman Village in Wealdstone?
How quickly can you attend an emergency HIU repair in Harrow?
Why is my hot water getting weaker in my Harrow flat?
Do you offer bulk servicing for Harrow blocks?
Need an HIU or MVHR Engineer in Harrow?
Call us now for same-day emergency response or get a free quote for servicing and installation.