Add Detail Ltd – Expert HIU Repair & Service London
Cost-Effective HIU Heating and Hot Water Solutions
Dedicated Team of HIU Engineers and Customer Service Professionals
NO HIDDEN FEES
| ✅ | Fair, Transparent Pricing |
| ✅ | Fixed/Hourly Repair Rates |
| ✅ | Fixed Price Quotes |
| ✅ | Discounted Group Rates |
| ✅ | Spring/Summer Discounts |
| ✅ | No Charge for Parking, CC or ULEZ |
| ✅ | Card Payment Availability |
HIU SPECIALISTS
| ✅ | Established in 2014 |
| ✅ | 5 Star Rated Services in London |
| ✅ | Certified HIU Experts |
| ✅ | Danfoss and Caleffi HIU Specialists |
| ✅ | Most Common Parts in Stock |
| ✅ | Quick Turnaround for Non-Stock Parts |
GUARANTEED SERVICE
| ✅ | Fully Insured Services |
| ✅ | 12-Month Parts Replacement Warranty |
| ✅ | One-Hour Response to Online Inquiries |
| ✅ | Expert HIU Engineers in London |
| ✅ | Endorsed by Which? Trusted Traders |
ABOUT US
HIU Services in London
Established in 2014 in London, ‘Add Detail Ltd’ is a recognised name in HIU services within the London community. Our team of skilled HIU service engineers are ready to assist with all your HIU system, repair and maintenance needs, ensuring your home remains warm and comfortable.
Specialising in heat interface units, our experts have in-depth knowledge of various types and brands, enabling them to accurately diagnose and resolve specific issues. This expertise enhances your HIU’s efficiency, reduces energy costs and extends its lifespan, helping to avoid costly replacements.
We also provide detailed digital reports and maintain a comprehensive service history, essential for maintaining optimal performance. Choosing ‘Add Detail Ltd’ means having reliable support for any district heating or hot water problems, giving you peace of mind.
Count on us to safeguard the safety, efficiency and longevity of your HIU – a smart choice for those in London seeking expert HIU care.
Fast Responses To Your HIU Enquiries Are Guaranteed!
Connect with us for professional HIU services and repair solutions in London. Reach out via our contact form or call 02088224451. Our services are fully insured, ensuring quality workmanship and peace of mind with every project. Learn more about HIU – Click here.
12 Tips To Keep HIU In Tip-Top Condition
- HIU annual service (read more)
- HIU specialist company to service and repair that uses only original parts (read more)
- HIU fitted with an Inline water scale reducer (read more)
- HIU secondary heating water quality check and inhibitor top-up (read more)
- HIU connected to a smart thermostat (read more)
- HIU secondary heating system with magnetic filter (read more)
- HIU heating and hot water controls explained by a HIU specialist (read more)
- HIU performance is affected by dripping taps and poor plumbing in the apartment (read more)
- HIU connected to radiators and importance of correctly working radiator valves, radiator bleeding and heating system balancing (read more)
- HIU connected to underfloor heating and importance of correctly working manifold, actuators, flow meters, control center wiring and room thermostats (read more)
- HIU repair and service record keeping and staying with the same HIU service company over the years offers several important benefits (read more)
- HIU problems for heating and hot water should be looked as soon as possible (read more)
ACCREDITATIONS
| |
GET A QUOTE ONLINELooking for a fixed price quote for HIU repair? We will get back to you within 24 hours. |
| |
CONTACT USTo find out more about our services or to discuss your requirements, get in touch. |
HIU FAQs
What is a HIU and are they easy to maintain?
A Heat Interface Unit (HIU) controls heating and hot water in properties connected to a central plant or communal boiler system.
They’re easy to maintain, and with regular servicing you can help prevent breakdowns, ensure energy efficiency, and keep your system running safely.
How often should I service my HIU?
We recommend servicing your HIU every 12 months to maintain efficiency. This reduces the risk of costly repairs and extends the unit’s lifespan. Annual servicing is often required to maintain warranty conditions.
What areas do you cover?
We’re based in London and cover a wide area across the city. Contact us to check availability in your postcode or click here to see the areas we cover.
Do you offer emergency HIU repairs?
Yes, we provide emergency HIU call outs across London. If your heating or hot water has stopped working, contact us and we’ll try and get there as quickly as possible.
Do you offer landlord or block maintenance contracts?
Yes, we work with property managers, landlords and residential blocks. We offer routine HIU maintenance contracts, group bookings and detailed service history tracking.
What happens during a HIU service?
Our engineers will inspect and service your HIU. The service includes the following:
- Inspection for leaks, corrosion, or damage.
- Cleaning of strainers and filters.
- Pressure and temperature checks.
- Verification of flow rates.
- Inspection of thermostatic controls and sensors.
- Expansion vessel pressure check.
- A service report detailing the condition and performance of the HIU.
- Recommendations for corrosion/leak repairs, part replacements or upgrades if needed.
- As part of the service, we also carry out small repairs. For example if there is a stuck pin on the valve or seized pump that can be fixed without breaking any seals or removing parts.
What are the most common HIU heating and hot water call-out repairs?
Identifying and resolving temperamental, inconsistent or complete loss of hot water issues in kitchens and bathrooms. Restoring heating to radiators or underfloor heating throughout the home.
Do you fit new HIUs and replace old ones?
Yes, we offer full HIU replacement and installation services in London. Our competitive fixed prices include a 5-year guarantee on both parts and labour.