Frese Boiler Repair
HIU London
Frese are a Danish precision engineering company known for their balancing valves and heat interface units used in district heating schemes. Our engineers have experience with Frese HIU systems and can carry out repair, servicing and fault diagnostics on their compact and full-size units.
Common Frese Boiler / HIU Faults
Signs Your Frese Boiler / HIU Needs Attention
What Our Engineer Checks on a Frese HIU
Every Frese 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.
Frese Boiler Repair HIU Process
Call or Book Online
Contact us 24/7. Tell us your address and that you have a Frese HIU fault and we will dispatch the nearest available engineer.
Engineer Arrives
A specialist HIU engineer arrives — typically within 1–2 hours for emergencies. We carry common Frese HIU spare parts on every van.
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.
Repaired & Guaranteed
Most Frese HIU repairs are completed on the same visit. All work is backed by our 12-month parts and labour guarantee.
For Property Professionals
Frese HIU Servicing for Landlords & Managing Agents
If you manage flats with Frese 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 Frese 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
Related Services
Why Choose Us?
Gas Safe Registered
Reg No: 217785 — certified and fully insured.
HIU Specialists
Experienced with Frese 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
Request a Callback
Leave your details and we'll call you back within 15 minutes.
or call us directly: 0330 520 1642
Book a Frese Boiler Repair HIU Engineer Today
Same-day repair, service and fault diagnosis across London.
Landlords, managing agents and housing associations welcome.