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​LONDON'S HIU SPECIALISTS

HIU Repair London — Same-Day Heat Interface Unit Repairs

Lost hot water or heating? HIU Experts provides same-day HIU repair across London. Our specialist engineers diagnose and fix the actual fault first time — no guesswork, no unnecessary upselling.

HIU repair in London is diagnosed and quoted transparently before any work begins. HIU Experts is a Gas Safe registered Heat Interface Unit specialist covering all of London, with same-day emergency callouts and a first-visit fix on most HIU faults.

HIU SERVICE PRICING

Straightforward HIU servicing with clear pricing for individual properties and larger block bookings.

  • HIU SERVICE

    120£
     
    Professional HIU service for individual properties.
    Valid for one month
    • Specialist HIU service
    • Professional inspection and servicing
    • Clear service pricing
    • Experienced HIU engineers

  • BLOCK BOOKING

    100£
    Every month
    Per flat for block bookings with more than 5 flats.
    Valid for 2 months
    • Available for blocks with more than 5 flats
    • Specialist HIU servicing
    • Professional service for each flat
    • Suitable for larger residential blocks

WHEN YOUR HIU FAILS, WE GET IT WORKING AGAIN

No heating or hot water can quickly become a serious problem. HIU Experts provides specialist HIU repair and fault finding across London, diagnosing issues with control valves, actuators, PICVs, pumps and other critical components.

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PICV valve diagnosis and replacement

Failed actuator replacement

Leaking union and connection fixes

Plate heat exchanger descale or replacement

Control valve and diverter valve repair

Control board / sensor fault diagnosis and reset

Specialist Diagnosis,
First-Visit Fixes

We check flow and return temperatures, flow rate, pressure, PICV operation, actuator response and the plate heat exchanger before we quote so you get an accurate diagnosis and a fixed-price repair, not a guess.

When Your HIU Fails, Everything Stops

A broken HIU means no hot water, no heating, and a stressful day for residents. General plumbers often can't diagnose HIU faults properly they don't carry the right spares and aren't trained on the control systems. That's why an HIU specialist should be your first call, not your last.

No hot water or heating

Fault codes or flashing alarm lights

Banging, clicking or whistling noises

Lukewarm water at max setting

Leaks or dripping from the unit

Low or fluctuating flow temperatures

The Benefits

Specialist response, accurate diagnosis and clear repair decisions.

SAME-DAY RESPONSE

Emergency callouts across London — we aim to reach you the same day you call.

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FIRST-VISIT FIX RATE

We carry common HIU parts on the van, so most repairs are resolved in one visit.

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PARTS WARRANTY

All parts we supply and fit are guaranteed ask your engineer for details.

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TRANSPARENT PRICING

You'll know the cost before any work proceeds. No hidden call-out surprises.

HELPFUL ANSWERS

Frequently Asked Questions About HIU Systems

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HIU Broken? Get a Fast, Fixed-Price Repair

Call or WhatsApp us and we'll confirm the fastest available appointment for your HIU repair.

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