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Cetetherm Boiler Repair
HIU London

Cetetherm HIUs are high-quality Scandinavian-designed heat interface units used in district heating developments and estate regeneration projects in London. Our engineers are experienced with Cetetherm compact and standard HIU configurations.

Gas Safe Reg No: 217785 24/7 Emergency Line 12-Month Guarantee All Cetetherm Models

Common Cetetherm Boiler / HIU Faults

Cetetherm HIU no hot water output
DHW plate heat exchanger scaling
Cetetherm controller error or alarm
Primary circuit pressure imbalance
Heating circuit valve fault
Pump failure in the secondary circuit

Signs Your Cetetherm Boiler / HIU Needs Attention

No hot water despite the network working
Cetetherm alarm light active
Hot water temperature inconsistent
Heating not reaching temperature

What Our Engineer Checks on a Cetetherm HIU

Every Cetetherm HIU fault call starts with a full systematic diagnostic — not a guess and replace approach. We follow a structured checklist to identify the root cause accurately.

Cetetherm controller alarm history
DHW valve and actuator operation
PHE temperature differential analysis
Secondary pump function and speed
Primary network pressures and flow limiter

Cetetherm Boiler Repair HIU Process

1

Call or Book Online

Contact us 24/7. Tell us your address and that you have a Cetetherm HIU fault and we will dispatch the nearest available engineer.

2

Engineer Arrives

A specialist HIU engineer arrives — typically within 1–2 hours for emergencies. We carry common Cetetherm HIU spare parts on every van.

3

Diagnosis & Fixed Quote

We diagnose the fault, explain the cause in plain English, and give you a fixed price before any work begins. No hidden charges.

4

Repaired & Guaranteed

Most Cetetherm HIU repairs are completed on the same visit. All work is backed by our 12-month parts and labour guarantee.

For Property Professionals

Cetetherm HIU Servicing for Landlords & Managing Agents

If you manage flats with Cetetherm HIUs, we provide annual servicing contracts, rapid-response repairs and full documentation for every visit. We work with landlords, managing agents and housing associations across London.

  • Annual Cetetherm HIU service certificates
  • Priority same-day response for tenant callouts
  • Written report after every visit
  • Multi-property discounts available
  • Direct tenant liaison if required

Frequently Asked Questions

Cetetherm HIU Fault?

Call Us Now

Same-day Cetetherm HIU repairs across London. 7 days a week.

Why Choose Us?

Gas Safe Registered

Reg No: 217785 — certified and fully insured.

HIU Specialists

Experienced with Cetetherm and all major HIU brands.

Same-Day Available

7 days a week including weekends.

12-Month Guarantee

All parts and labour guaranteed.

5-Star Reviews

Trusted by London landlords and residents.

Free Callback

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or call us directly: 0330 520 1642

Book a Cetetherm Boiler Repair HIU Engineer Today

Same-day repair, service and fault diagnosis across London.

Landlords, managing agents and housing associations welcome.