Our Services
HIU Annual Service
Expert HIU Servicing by HIU Expert London – Keep Your Heating Running Efficiently Your Heat Interface Unit (HIU) plays a critical role in providing hot water and heating. With our expert annual HIU service, you can ensure your system operates efficiently, avoids energy waste and lasts longer, saving you money on costly repairs or replacements. At HIU Expert London, we specialise in HIU maintenance for residential and commercial properties across London. Our engineers bring hands-on experience and technical knowledge to every job, fine-tuning your system to work at peak performance.
What’s Included in Your HIU Service:
-Water Quality Check: Testing for inhibitor levels, pH balance and corrosion
-Strainer Filter Cleaning: Removal of any blockage affecting system flow
-Visual Inspection: Checking for leaks, corrosion and potential failures
-Heating Control Check: Ensuring settings are accurate and functional
-Pump Reset (if needed): Correcting any changes in system pressure -Flow Rate Measurement: Verifying primary heating volume accuracy
-Meter & Component Assessment: Ensuring all HIU parts perform efficiently
-Digital Report: You’ll receive a full emailed service report with findings and recommendations
-Repair Quotes (if needed): Clear, fixed pricing for any required replacements
-Annual Reminders: We’ll let you know when your next service is due
Transparent Pricing: Fixed fee: £120 included VAT, no hidden costs, no surprise charges.
Need Help or Have Questions? We’re here to assist, use our live chat or contact us by email: hiuexpertlondon@gmail.com for any enquiries.
We’re happy to guide you or explain anything you’re unsure about.
Prefer to Pay by Cash? We accept cash payments as well, just let us know when booking.
Group Booking Discounts Available: If you’re managing multiple units in the same building, ask us about multi-service discounts, ideal for landlords, property managers and developers.
Get your HIU system serviced by London’s dedicated HIU specialists. Book today and ensure your heating and hot water systems stay reliable and energy-efficient.
HIU Repair
Affordable & Efficient HIU Repair – London
Expert Diagnosis. Genuine Parts. Fast Fixes.
At HIU Expert London, we specialise in fast, accurate repairs of Heat Interface Units (HIUs) across London. Whether you’re experiencing pressure issues, leaks, or loss of heating/hot water, our engineers are equipped to resolve most problems on the first visit.
We have in-depth knowledge of all major HIU brands and models — which means faster diagnosis, fewer callouts, and long-term efficiency for your system.
What’s Included in Our HIU Repair Visit:
-Leak Detection & Repair-Seized Circulation Pump Fixes
-Unblocking of Strainer Filters
-Re-pressurising Expansion Vessels
-Temperature Control Valve Repairs
-Differential Pressure Controller Faults
-Room Thermostat Connection Repairs
-Motorised Flow Control Valve Servicing
-Underfloor Heating Investigation
-Radiator Balancing
If parts are needed, we’ll provide a fixed price quote and can return promptly for the replacement with genuine components.
Why Choose HIU Expert London?
-Qualified Engineers: Fully trained HIU technicians with specialist tools for precise, fast repairs
-Genuine Parts: Only original HIU parts used, with a 12-month guarantee on parts and labour
-Transparent Pricing: First hour: £110 included VAT After that: £30 included VAT per 15 minutes
-Professional Service: Our engineers arrive in branded uniforms and treat your home with care
-Fast Scheduling: Quick response across London, book online or speak to our team directly via chat
How to Book
Booking your HIU repair is easy:
-Use our online contact form or live chat to request an appointment
-We accept cash payments as well, just let us know when booking
If your HIU can’t be repaired during the initial visit, we’ll provide a fixed quote for a follow-up with any necessary parts.
Need a New HIU?
If your system is beyond repair, we also offer fixed-price HIU replacements using trusted models like DANFOSS, installed by certified engineers.
Let HIU Expert London restore your heating and hot water quickly, affordably and professionally.
HIU Part Replacements
Expert HIU Part Replacements
Genuine Parts. Fast Turnaround. 12-Month Guarantee.
At HIU Expert London, we provide professional HIU part replacements using only genuine components from leading brands. Whether it’s a faulty valve, circulation pump or sensor, our experienced engineers ensure your unit is repaired to the highest standard, quickly and efficiently.
With a specialist focus on HIU systems, we know exactly how to identify and fit the correct part the first time, helping you avoid delays and unnecessary costs.
What You Get:
-Genuine HIU Parts Only – No cheap alternatives
-12-Month Warranty – On all parts and labour
-Professional Installation – Branded uniforms, specialised tools, and expert service
-Fair, Competitive Pricing – Transparent quotes with no surprises
-Fast Response – Quick turnaround on most parts and service callouts
We Service All Major HIU Brands:
ALFA LAVAL • CALEFFI • CETETHERM • GIACOMINI • DANFOSS • DUTYPOINT • INTATEC • EVINOX ENERGY • IDEAL • KVM (KAMO & CONHEAT) • MEIBES LOGOTHERM • MHS BOILERS • POTTERTON • RHICO • RWC • SWITCH2 • WORCESTER BOSCH • HEATRAE SADIA
How to Get a Quote or Book a Replacement
To speed up your quote and ensure we supply the correct part, please send the following details:
- Photo and name of the required part
- Photo of the HIU label/data badge (showing model and serial number)
- Photo of the entire HIU unit
- Photo of the cupboard/installation area
- Job postcode Send via email: hiuexpertlondon@gmail.com Or use our live chat or Online form We aim to respond within 24 hours or sooner. Need More Than a Part? If your HIU needs diagnosis, repair or full replacement, check our other services:→ [HIU Repairs] | [Annual Servicing] [HIU Replacement Options]