In London’s ever-evolving industrial and commercial landscape, heat exchangers play a pivotal role in managing energy use, maintaining system balance, and ensuring the smooth operation of critical equipment. Over time, these systems naturally accumulate deposits like scale, sludge, and biological fouling. If left unchecked, these build-ups severely impact the exchanger’s efficiency, increase energy consumption, and potentially lead to system failure.
This article provides a comprehensive guide to the top 10 heat exchanger cleaning companies in London, while also helping facility managers, engineers, and business owners understand the value of professional heat exchanger cleaning services.
Whether dealing with shell and tube units in industrial environments or compact plate heat exchangers in commercial HVAC systems, having the right service provider is crucial to ensuring reliability and performance.
Why is Regular Heat Exchanger Cleaning Essential for Your System’s Performance?
Heat exchangers are designed to transfer heat efficiently between two mediums, often operating under high pressure or temperature. Over time, the internal surfaces of these units can become coated with deposits such as scale from hard water, biological growth, or rust particles. This build-up forms an insulating layer that restricts heat transfer and forces the system to consume more energy to achieve the desired performance.
Regular cleaning prevents this efficiency loss. It restores the system’s original thermal output, reduces energy bills, and extends the life of the equipment. In heavily regulated sectors like healthcare and manufacturing, it’s also a necessary step to comply with industry-specific health and safety standards. In essence, a routine cleaning schedule is not just good practice — it’s an operational necessity.
What Factors Should You Consider When Choosing a Heat Exchanger Cleaning Company in London?
Choosing the right service provider requires a combination of technical expertise, reliability, and compliance. London’s leading heat exchanger cleaning companies often possess industry-recognised certifications and a demonstrated history of working with various exchanger types, from shell-and-tube units to plate heat exchangers.
Understanding the company’s cleaning methodology is equally important. Some specialise in mechanical techniques, using high-pressure water jetting or brushing tools, while others excel in chemical descaling especially where precision and material compatibility are key. For many organisations, the use of environmentally friendly solutions is a growing concern. As such, businesses may prioritise providers who use biodegradable chemicals and manage wastewater responsibly.
Furthermore, customer service including response time, flexibility, and post-cleaning reporting also plays a significant role in decision-making. Many of the top-rated London companies offer comprehensive maintenance contracts, allowing clients to bundle inspection and cleaning into a cost-effective, long-term solution.
How Do Leading Professionals Handle Heat Exchanger Descaling and Fouling Removal?
In professional settings, heat exchanger cleaning is rarely a one-size-fits-all approach. Cleaning specialists begin by assessing the type and extent of fouling, taking into account the material of the exchanger and its application. For instance, food-grade heat exchangers used in processing plants require gentler cleaning methods than industrial units in power generation.
Mechanical cleaning methods, such as brushing or high-pressure jetting, are ideal for removing physical debris from large units. When mineral scale or biological growth is involved, chemical descaling becomes essential.
Here, technicians circulate tailored chemical solutions through the system, dissolving deposits without harming internal surfaces. For intricate or fragile systems, ultrasonic cleaning offers a non-invasive alternative that uses sound waves to dislodge contaminants.
A complete service often includes pre-cleaning inspections using flow tests or thermal imaging, followed by post-cleaning validation to ensure that performance metrics are restored.
What Are the Top 10 Heat Exchanger Cleaning Companies in London?
1. Allcool London – “Engineering Precision Meets Practical Cleaning”
With decades of experience in HVAC and thermal systems, Allcool has developed a reputation for thorough, technically advanced plate heat exchanger cleaning services. They service clients across multiple sectors including data centres, healthcare, commercial buildings, and more.
Their engineering team offers both on-site and off-site cleaning, using ultrasonic baths, descaling solutions, and mechanical brushing all tailored to the type of fouling and material of the unit. Their process is supported by testing and validation, ensuring performance is restored to near-new standards.
Allcool’s emphasis on preventative maintenance also appeals to businesses that want a long-term partner in equipment care. They don’t just clean exchangers they diagnose and optimise them for future operation.
Technical Focus
Specialises in full dismantling and plate refurbishment
Client Advantage
Ideal for facilities with ongoing HVAC service contracts
- Website: https://allcool.co.uk/
- Phone: 020 8593 5333
- Address: Unit 4 Rippleside Commercial Estate, Ripple Road, Barking, Essex. IG11 0RJ
- Email: info@allcool.co.uk
Review: ★★★★★ “Consistently professional and responsive. Their team went above and beyond when others couldn’t.” – Verified Google Review
2. Sonic Solutions Ltd – “The Ultrasonic Cleaning Specialists”
Sonic Solutions is a UK-wide cleaning company with a strong London presence, known for their use of ultrasonic technology for delicate and complex heat exchangers. Their method ensures non-invasive removal of fouling, scale, and debris, making them a preferred choice for industries like pharmaceuticals, food processing, and electronics.
Their cleaning process is supported by environmentally friendly solutions, with attention to reducing chemical waste and protecting system components.
Their bespoke service approach ensures each project is treated individually. Whether it’s marine, industrial, or HVAC systems, Sonic Solutions uses precision tools and modern technology to achieve exceptional cleaning standards.
Core Expertise
Ultrasonic cleaning tailored to complex industrial components
Service Fit
Best for high-spec systems needing gentle yet thorough cleaning
- Website: https://sonicsolutionsltd.com/
- Phone: 01924 938052
- Address: Unit 16, Riverside Way, Ravensthorpe Industrial Estate Dewsbury West Yorkshire. WF13 3LG
- Email: hello@sonicsolutionsltd.com
Review: ★★★★☆ “The ultrasonic cleaning made a real difference — unit back to full output with no damage.” – Verified Google Review
3. RGL Services – “Reliable Industrial-Grade Cleaning Since 1985”
RGL Services has been operating in the industrial cleaning sector for over 35 years. Their heat exchanger cleaning service is part of a broader suite that includes water jetting, descaling, and confined space cleaning. They handle a variety of exchangers including shell and tube, plate, and finned coil models.
Using high-pressure jetting and safe chemical flushing, RGL ensures that deposits like limescale and biofouling are thoroughly removed. Their experienced technicians are qualified for hazardous environments, making them suitable for high-risk or regulated industries such as chemical manufacturing and utilities.
Field Specialism
Industrial-grade heat exchanger descaling and flushing
Most Suitable For
Utility companies and high-risk environments
Pricing: Not listed publicly
- Website: https://www.rglservices.co.uk/
- Phone: 0203 376 1179
- Address: Paultons Park, Ower, Romsey, Hampshire SO51 6AL, UK
- Email: sales@rglservices.co.uk
Review: ★★★★★ “Reliable and quick to respond during our scheduled plant shutdown. Highly recommended.” – Google Review
4. Young Calibration – “Precision Cleaning for Thermal Performance”
Young Calibration offers specialist cleaning and performance testing for heat exchangers, with a particular focus on thermal and flow optimisation. Their UKAS-accredited calibration lab adds an extra layer of credibility for customers seeking performance assurance alongside cleaning.
They work with air-to-water, oil, and glycol-based systems and offer both chemical cleaning and mechanical flushing. Their facilities are ideal for clients looking to pair cleaning with flow testing, pressure drop analysis, or revalidation. Industries served include aerospace, automotive, and specialist research labs.
System Focus
Thermal testing and cleaning under one roof
Customer Fit
Ideal for businesses requiring validated performance restoration
- Website: https://www.youngcalibration.co.uk/
- Phone: +44 (0)1273 455572
- Address: Young Calibration Limited, 5 Cecil Pashley Way ,Shoreham by Sea ,West Sussex BN43 5FF United Kingdom
- Email: enquiries@youngcalibration.co.uk
Review: ★★★★☆ “Top-tier calibration and cleaning services. Professional staff with strong attention to detail.” – Google Review
5. Serck Global – “Global Experience, Local Precision”
Serck is part of the Unipart Group and offers a global heat exchanger service network including a robust presence in London. Known for working with commercial fleets, oil & gas, and manufacturing clients, Serck provides both on-site and depot-based heat exchanger cleaning services.
Their facilities are equipped to clean, pressure test, and rebuild shell and tube exchangers, charge air coolers, and industrial radiators. Their team uses ultrasonic technology and high-pressure flushing, with compliance to ISO standards and global safety protocols.
Strength Area
Heavy-duty cleaning for transport and industrial sectors
Use Case
Best suited for large-scale operations with regular servicing needs
- Website: https://www.serckglobal.com/
- Phone: +44 (0) 3301 334 315
- Address: Unipart House, Garsington Road, Cowley, Oxford OX4 2PG
- Email: hello@serckglobal.com
Review: ★★★★☆ “Used Serck for a major overhaul reliable and consistent with updates and service turnaround.” – Google Review
6. Alfa Laval UK – “Original Manufacturer-Grade Cleaning”
As one of the world’s leading heat exchanger manufacturers, Alfa Laval also provides cleaning services through its UK division. Their London-based support services include CIP (Cleaning-In-Place), removal of heavy scaling, and performance diagnostics.
They use proprietary cleaning agents designed to extend the life of Alfa Laval exchangers, making them an excellent choice for clients using their systems. With certified engineers and manufacturer-approved processes, Alfa Laval guarantees cleanings that preserve original performance specs.
Unique Capability
OEM-grade cleaning for Alfa Laval heat exchangers
Perfect For
Users of Alfa Laval systems requiring authorised servicing
- Website: https://www.alfalaval.co.uk/
- Phone: 01276 63383
- Address: 7 Doman Road, Camberley, Surrey GU15 3DN
Review: ★★★★★ “Exceptional knowledge and care everything done to original specifications.” – Google Review
7. Jay Cool – “Efficient Heat Exchanger Restoration Services”
Jay Cool specialises in heat exchanger and industrial cooling system maintenance with a strong emphasis on efficient turnaround and system longevity. Based in the UK with services in London, they provide full disassembly, inspection, cleaning, and reassembly for plate and shell units.
Their multilingual site and diverse team indicate a growing European client base. They offer preventative service packages and one-off emergency cleaning. Though less known in the public eye, their industry reliability and commitment to custom service have made them a trusted choice.
Main Offering
Full-service cleaning with reassembly and gasket checks
Application Fit
Good for clients needing bilingual support and full-service restoration
- Website: https://jay-cool.co.uk/
- Phone: +44 1303 883288
- Address: 6 West Cliff Gardens, Folkestone, England, CT20 1SP
- Email: info@jay-cool.co.uk
Review: ★★★★☆ “Fast service, very polite and communicative team. Good for repeat contracts.” – Google Review
8. Corejet by Corecut – “Precision Jetting for Peak Performance”
Corecut’s Corejet division is focused exclusively on high-pressure water jetting services including heat exchanger cleaning. Based in Scotland but servicing London and other regions, they specialise in UHP water jetting that removes even the toughest fouling without damaging the system.
They’re often called upon for emergency outages and shutdowns where mechanical cleaning must be completed quickly but effectively. Their technicians are trained for confined space entry and hazardous system handling.
Primary Skillset
Ultra high-pressure jetting for stubborn deposits
Operational Need
Best for rapid-response cleaning and shutdown periods
- Website: https://www.corecut.co.uk/
- Phone: 01506 854 710
- Address: Core Cut Ltd Bankhead Broxburn West Lothian EH52 6PP
- Email: info@corecut.co.uk
Review: ★★★★☆ “Very effective jetting removed years of scale with no pipe damage.” – Google Review
9. UK Exchangers Ltd – “Complete Cleaning and Servicing Solutions”
UK Exchangers offers heat exchanger sales, repairs, and cleaning across the country, including London. Their servicing options include chemical cleaning, mechanical brushing, and pressure testing. They cater to commercial HVAC, marine, and light industrial sectors.
They also stock a wide range of spare parts and gaskets, making them a convenient option for companies looking to both maintain and refurbish equipment in one place. Their reputation for fast turnaround and technical accuracy is well regarded across the UK.
Key Feature
Integrated cleaning and parts replacement
Industry Match
Suited for commercial buildings and small industrial plants
- Website: https://www.uk-exchangers.com/
- Phone: +44 1234 244320
- Address: 55, Stilebrook Rd, Olney, Buckinghamshire MK46 5EA, United Kingdom
- Email: sales@ukeltd.com
Review: ★★★★☆ “Quick response, easy to order spare parts and cleaning together. Hassle-free service.” – Google Review
10. AKS Heat Transfer – “Tailored Heat Exchanger Services”
AKS Heat Transfer is known for its bespoke maintenance solutions, especially for large industrial heat exchangers. Their service offering includes ultrasonic cleaning, chemical flushing, re-gasketing, and refurbishment.
With mobile cleaning units and experienced field engineers, they bring services directly to customer sites across London and the southeast. AKS’s flexible, client-first approach makes them a preferred choice for industries with unique operating conditions or custom-built exchangers.
Top Strength
Custom servicing plans for large-scale industrial clients
Sector Fit
Best for bespoke systems requiring mobile support
- Website: https://aksheattransfer.com/
- Phone: 0114 269 4002
- Address: Unit 25B, Orgreave Crescent, Dore House Industrial Estate, Sheffield, S13 9NQ
- Email: tech@aksheattransfer.com
Review: ★★★★★ “Tailor-made service from start to finish. Very professional engineers.” – Google Review
How Can Expert Cleaning Services Boost Thermal Efficiency and Reduce Energy Costs?
Efficiency is at the heart of every well-maintained heat exchanger. When fouling or scale builds up on internal surfaces, it creates resistance against heat transfer. As a result, systems must work harder — and consume more energy — to maintain output. Over time, this not only leads to inflated utility bills but also places mechanical stress on pumps, compressors, and other connected components.
Professional cleaning removes these performance barriers. By restoring clean, unobstructed surfaces inside the exchanger, the system can operate at its intended thermal output without excessive energy input. In many cases, businesses report a 15–25% reduction in energy costs following a comprehensive cleaning. In addition to savings, this also supports sustainability goals and reduces the site’s carbon footprint — increasingly important considerations for companies in today’s regulatory environment.
How Often Should Industrial Systems Be Cleaned and Inspected in London?
The ideal maintenance frequency depends on the exchanger type, operating conditions, and the quality of the working fluid. However, routine cleaning is recommended to prevent performance issues and costly breakdowns. Here’s a general guide:
| System Type | Recommended Cleaning Frequency |
| Commercial HVAC Systems | Every 6 to 12 months |
| Shell and Tube Heat Exchangers | Annually |
| Plate Heat Exchangers | Every 12 to 18 months |
| Heavy-Duty Industrial Systems | Quarterly or Bi-Annually |
In areas with hard water common in parts of London or in industries dealing with oils and chemicals, cleaning may be needed more frequently. Maintenance contracts are often the most effective way to stay on schedule without the need for internal tracking.
What Eco-friendly Cleaning Methods Are Used by London Companies?
Environmental responsibility is no longer optional. Many cleaning providers in London have embraced eco-friendly techniques that comply with both national regulations and corporate sustainability targets.
Instead of relying on harsh acids or alkaline solutions, companies are increasingly using biodegradable chemical agents that are just as effective but less harmful to the environment. Advanced filtration systems are used to treat wastewater before disposal, ensuring that no contaminants enter public drainage systems.
In addition, low-water-use jetting systems and closed-loop chemical circulation units help reduce water and chemical consumption. These innovations reflect a growing awareness of environmental impact and offer clients peace of mind that their operations align with sustainable practices.
What Should You Ask Before Hiring a Heat Exchanger Cleaning Contractor?
Engaging a contractor without proper vetting can lead to substandard work or even equipment damage. It’s essential to clarify key details before proceeding. Companies should be able to explain their experience with your specific exchanger type and clearly outline their cleaning approach whether mechanical, chemical, or a combination.
Ask for documentation such as RAMS (Risk Assessments and Method Statements), insurance details, and technician qualifications. Understanding what post-cleaning reports are provided such as pressure tests, flow rate measurements, or visual inspections is also important. These details ensure that the job has been completed to a high standard and allows performance benchmarking for future maintenance.
Reliable contractors will welcome these questions, as they signal a professional and safety-conscious working relationship.
Conclusion
A clean heat exchanger is the cornerstone of energy-efficient and reliable operations. For businesses across London, investing in professional cleaning services can lead to substantial cost savings, reduced system failures, and improved compliance with environmental and safety standards.
The ten companies listed above represent the best the city has to offer — combining innovation, technical expertise, and outstanding customer support. By understanding the cleaning methods, maintenance schedules, and eco-friendly advancements discussed in this guide, organisations can make informed decisions that benefit both their systems and their bottom line.
FAQs About Heat Exchanger Cleaning Companies in London
What causes fouling in heat exchangers?
Fouling is caused by mineral scale, biological growth, suspended particles, and corrosion by-products accumulating on internal surfaces.
Are professional cleaning services safe for sensitive systems?
Yes, most providers use non-invasive or chemically compatible methods tailored to sensitive heat exchanger materials and designs.
How much does heat exchanger cleaning cost in London?
Costs vary depending on the exchanger type, size, and level of fouling, but typical services range from £300 to over £2,000 per unit.
Can a dirty heat exchanger affect the whole system?
Absolutely. A fouled exchanger increases system pressure, reduces efficiency, and can cause overheating or component failure elsewhere.
Do London companies offer emergency cleaning services?
Yes. Many leading providers operate 24/7 call-out services for urgent cleaning and unplanned maintenance.
Is a maintenance contract better than one-off cleaning?
For most businesses, a contract offers better value and ensures cleaning is done on time, avoiding performance drops or damage.
How long do professional cleaning services take?
Most standard cleaning jobs are completed within a day, though larger or more complex systems may require additional time for full servicing.