China Worcester Greenstar 24i Plate Heat Exchanger Factories & Exporter

High-Efficiency Secondary Plate Heat Exchangers Engineered for Worcester Bosch Greenstar Boilers. OEM Quality & Precision Thermal Engineering directly from Flotte's Certified Pressure Vessel Production Lines.

Macro-Industry Solutions: Thermal Efficiency & Decarbonization

Understanding the strategic importance of plate heat exchanger retrofits in residential and district energy infrastructures.

⚙️ Reducing Domestic Carbon Footprint

The condensing boiler remains the primary vector for heat generation in Western Europe. Maximizing secondary heat transfer is crucial to keep boilers working in condensing mode, ensuring energy is not lost through flue gases. By utilizing precision-designed aftermarket plate heat exchangers for systems like the Worcester Greenstar 24i, boiler efficiency is maintained above 90%, yielding significant CO₂ reductions.

⚙️ Hydronic Balance & District System Integration

Individual boiler plate heat exchangers interact continuously with municipal water networks and localized closed-loop heating lines. Maintaining optimal hydraulic pressure drops is mandatory. Our micro-corrugation profiles guarantee minimal hydraulic resistance while sustaining peak convective heat transfer rates, serving as a baseline solution for modern low-carbon district integration.

⚙️ Combatting Scale & Magnetite Blockages

Municipal hot water networks frequently suffer from calcium carbonate scale and magnetite debris accumulation. Flotte's plate heat exchangers are engineered with advanced chevron textures that promote turbulent flow. This turbulence creates a self-cleaning mechanical action, extending the lifespan of boiler replacement parts and reducing system downtime by up to 40%.

ESTABLISHED IN 1995

Welcome to Flotte

Flotte Energy Saving Company, established in 2013 with a registered capital of 101 million yuan, originated from Flotte Thermal Engineering founded in 1995. With three decades of technical expertise, the company specializes in water equipment, HVAC systems, and water treatment industries. It consistently leads industry peers in adopting cutting-edge technologies, developing innovative products, and delivering comprehensive production and sales services.

Our commitment to rigorous manufacturing standards has allowed us to secure a leading position in the thermal engineering market, supporting both residential and commercial clients across Europe, Asia, and the Americas.

Flotte Production Facility & Technology Center
30+
Years of Thermal Engineering Experience
260+
Professional Team & Skilled Technicians
4,500+
Annual Heat Exchange Units Manufactured
70,000㎡
Modern Industrial Production Area

Global Commercial Aftermarket Dynamics

Strategic supply chain analysis of Worcester Greenstar replacement parts in the UK and European HVAC distribution sectors.

UK & Ireland Replacement Demand

The Worcester Greenstar 24i series is one of the most widely deployed combi boilers in the United Kingdom, leaving a massive aftermarket footprint. Given the high hard-water concentration in Southern and Eastern England, DHW plate heat exchangers represent one of the most frequently replaced components after 5–8 years of service. China-based precision factories like Flotte offer vital continuity to independent merchants and boiler service teams, delivering direct cost reduction without degrading performance benchmarks.

B2B Procurement & OEM Standards

European heating supply chains demand compliance with material composition directives. Our Worcester Greenstar 24i plate heat exchangers are manufactured from SUS316L (containing molybdenum) rather than standard SUS304. This ensures robust protection against chloride-induced pitting, a critical requirement for domestic tap water. Flotte’s commercial partners benefit from reliable supply stability, container-level customization, and competitive pricing structures.

Technical Specification Blueprint: Greenstar 24i Compatibility

Engineering specifications and fluid-dynamic metrics of our Worcester Greenstar compatible heat exchangers.

Technical Metric OEM Standard Spec Flotte Production Specification Engineering Benefit
Material Composition Stainless Steel AISI 316 AISI 316L (Low Carbon Stainless) Superior intergranular corrosion resistance & durability.
Brazing Material 99.9% Pure Copper 99.9% Copper (Vacuum Furnace Brazed) Leak-proof performance up to 30 Bar static pressure.
Plate Thickness 0.3 mm - 0.4 mm 0.4 mm (Uniform stamp thickness) Longer service life against thermal shock fatigue.
Max Working Pressure 10 Bar 16 Bar (Test pressure 24 Bar) Enhanced safety margin under sudden water hammer conditions.
Hydraulic Channels Parallel Chevron Optimized Herringbone (High Turbulence) Self-cleaning performance, minimizing magnetite fouling.

International Quality Standards & Certifications

Our manufacturing processes are fully certified under international frameworks, ensuring quality compliance across target markets.

The company has been continuously advancing in production technology innovation, holding multiple patent certifications including "High-Efficiency Plate Heat Exchanger", "Intelligent Plate Heat Exchanger System", and "Plate Heat Exchanger Scale Removal Device" (see qualification documentation). Its products have obtained mandatory national product certification and safety registration from the National Standardization Committee, along with the safety registration for plate heat exchangers issued by the National Boiler and Pressure Vessel Standardization Technical Committee. The company has also achieved ISO9001 Quality Management System certification, ISO14001 Environmental Management System certification, and ISO45001 Occupational Health and Safety Management System certification.

ISO Certification Flotte 1
ISO Certification Flotte 2
ISO Certification Flotte 3
ISO Certification Flotte 4
ISO Certification Flotte 5
Quality Standard Cert 6
Quality Standard Cert 7
Quality Standard Cert 8

Our Technical Advantages

Cutting-Edge Heat Exchange Technology

Specializing in plate heat exchangers, it features patented corrugated plate design, achieving 2-3 times higher heat exchange efficiency than conventional equipment.

Industry-Wide Scenario Adaptation

The products cover 8 core areas such as air conditioning, heating and ventilation, and central heating. The solutions have been verified by projects in many places around the world, and can accurately match different regional conditions and compliance requirements.

Strict Quality Certification Guarantee

The whole process quality control system runs through the production, the products have obtained a variety of certifications, and the preferred stainless steel, titanium and other high-end materials ensure stable and durable in harsh environments.

Global Professional Services

We provide customized design, after-sales maintenance and one-stop service, multilingual team + efficient supply chain, to ensure that global customers can get timely technical and logistical support.

Modern Shop Floors

The company operates modern production workshops equipped with advanced manufacturing and quality inspection facilities. All frontline production staff are certified technicians who have undergone rigorous formal training. Production processes, quality control, and service operations strictly adhere to the ISO 9001:2015 international quality management system, while also complying with the pressure vessel quality assurance framework. Our products undergo mandatory inspections by national quality supervision authorities, ensuring full compliance with performance standards.

Advanced Flotte Factory Machinery

Modern Production Facility Showcase

Flotte Factory Floor 1
Flotte Factory Floor 2
Flotte Factory Floor 3
Flotte Factory Floor 4
Flotte Factory Floor 5
Flotte Factory Floor 6
Flotte Factory Floor 7
Flotte Factory Floor 8

State-Of-The-Art Manufacturing & Quality Inspection

Our vertical manufacturing process controls every step from raw plate stamping to vacuum thermal brazing, ensuring maximum compliance and physical performance.

Splint cutting

Splint Cutting

Micro-forging

Micro-Forging

Spray painting

Spray Painting

Sheet cutting and coding

Sheet Cutting & Coding

Water pressure detection

Water Pressure Detection

Equipment assembly

Equipment Assembly

Rubber-coated pad

Rubber-Coated Pad Production

Plate punching

Plate Punching

Sheet stamping forming

Sheet Stamping & Forming

Localized Support & Regulatory Compliance

Ensuring worry-free supply chains via localization, regulatory certificates, and logistic security.

🛡️ CE & WRAS Alignment

For B2B buyers importing domestic boiler components to the EU and UK, materials in direct contact with drinking water must meet strict toxicity standards. Flotte plate heat exchangers utilize specialized, non-toxic copper foil and medical-grade 316L stainless steel plates, aligning with WRAS and CE directives.

🛡️ Pressure Equipment Directive (PED)

As pressurized components inside a residential boiler gas circuit, secondary heat exchangers fall under PED regulations. Each design undergoes finite element analysis (FEA) to confirm fatigue life and stress resistance, followed by hydro-pneumatic tests at 1.5x rating before packaging.

🛡️ Integrated Logistics & DDP

We provide full customs clearance support, standard English packing lists, localized pallet sizing, and variable shipping options (FOB, CIF, and Delivered Duty Paid - DDP) to simplify importing procedures for heating distributors worldwide.

Localized Thermal Application Scenarios

From single residential boiler swaps to large-scale municipal heating projects.

Residential Boiler Upgrades

In municipal hard-water areas, replacement plate heat exchangers restore instant domestic hot water (DHW) output on Worcester Greenstar 24i boilers, correcting erratic heating behaviors and resolving system lockout errors.

Commercial Building Integration

Larger scale modular units are applied within high-rise HVAC circuits, using high-heat plate configurations to decouple primary heating loops from terminal circuits, protecting centralized boilers from system debris.

District Heating Substations

In centralized heating systems, plate heat exchangers are the core heat exchange equipment, used for heat transfer between municipal heat sources and user ends, precisely regulating the supply water temperature to meet the heating demands of different regions, enhancing heat utilization, reducing pipeline losses, facilitating the efficient and stable operation of urban centralized heating systems, and ensuring the comfort of residents during winter heating.

Technical Roadmap & AI-Driven Innovations

Our engineering roadmap focuses on intelligent energy management and next-generation metallurgy.

AI-Assisted Hydronic Design

Using computational fluid dynamics (CFD) paired with neural network optimization, we model local velocity profiles to minimize dead zones. This research yields a new plate geometry that reduces fouling risks by 35% compared to standard symmetric chevron designs.

Next-Gen Nano-Coatings

To resist limescale in harsh hard water regions, we are testing anti-scaling nano-hydrophobic surface coatings. This thin-film coating prevents mineral deposition on the plates, maintaining peak thermal efficiency throughout the boiler's lifecycle.

Explore Our Core Heat Exchanger & Valve System Portfolio

In addition to boiler replacements, Flotte designs and manufactures a broad spectrum of thermal solutions.

Plate Heat Exchanger - Detachable Plate Heat Exchanger

Plate Heat Exchanger - Detachable Plate Heat Exchanger

Designed for straightforward maintenance and scaling operations. Ideal for heavy-duty industrial and district heating applications requiring routine chemical cleaning.

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Intelligent Heat Exchange Unit - Integrated Heating Solution

Intelligent Heat Exchange Unit - Integrated Heating Solution

A pre-configured, skid-mounted, fully automated thermal delivery station incorporating pumps, control valves, and sensors for rapid installation.

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Pressure regulating station with detachable plate heat exchanger

Pressure regulating station with detachable plate heat exchanger

Provides critical hydraulic isolation and pressure safety steps between main district lines and secondary user networks.

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Building Heat Exchanger Unit

Building Heat Exchanger Unit - HVAC Systems

Engineered for commercial HVAC networks to isolate boiler water from secondary distribution piping, preventing scale and magnetite migration.

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Intelligent Integrated Box-Type Heat Exchanger Unit

Intelligent Integrated Box-Type Heat Exchanger Unit

Weatherproof, enclosed outdoor design allowing swift heating integrations directly in residential and commercial yards.

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Secondary Network Intelligent Unit Balance Valve

Secondary Network Intelligent Unit Balance Valve

Implements precise hydronic balancing across buildings to maintain steady pressure profiles and eliminate hot or cold distribution issues.

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Room Temperature Collector

Room Temperature Collector

High-precision digital feedback sensor designed to transmit accurate ambient temperature readings back to intelligent regulatory valves.

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Intelligent Regulation And Balance System

Intelligent Regulation And Balance System For Secondary Networks

A cloud-managed IoT software and hardware ecosystem regulating distribution networks to optimize primary energy usage.

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Shell And Tube Heat Exchanger

Shell And Tube Heat Exchanger - A Heat Exchanger Of The Shell And Tube Type

Traditional structural solution providing thermal stability and high tolerance for dirty fluids under high temperature and pressure.

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Multi-Effect Evaporation System

Multi-Effect Evaporation System

Engineered for industrial concentration, wastewater processing, and chemical recovery, maximizing steam utility and reuse.

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Membrane Concentration System

Membrane Concentration System

Advanced high-pressure reverse osmosis and nanofiltration system for liquid purification and zero liquid discharge (ZLD) plants.

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Q&A: Technical FAQ for Boiler Heat Exchanger Procurement

Direct technical answers addressing the key inquiries of heating engineers, distributors, and procurement managers.

1. Why does the Worcester Greenstar 24i plate heat exchanger block, and how does the Flotte design prevent this?
Residential boilers experience scaling when municipal water containing high calcium and magnesium carbonates is heated above 60°C, causing mineral precipitation on the plate surfaces. Magnetite from domestic radiators can also collect within the thin channels. Flotte's plate heat exchangers utilize optimized herringbone corrugated patterns. This layout increases local turbulence at low flow velocities, producing a mechanical scrubbing effect that limits sediment settling and scale formation.
2. What are the key material differences between OEM and Flotte aftermarket parts?
OEM standards typically specify standard grade stainless steel AISI 316. Flotte manufactures replacement units with low-carbon AISI 316L stainless steel. The lower carbon profile reduces carbide precipitation in heat-affected zones during vacuum brazing, providing superior resistance to crevice corrosion and pitting from municipal chlorides.
3. How do you ensure compatibility across Worcester Greenstar 24i variants (Junior, i System, Combi)?
We maintain strict coordinate consistency for all hydraulic port locations and connection studs. Our replacement plate heat exchangers match the mounting footprint and port spacing of the OEM part (Bosch part reference 87161066860 or equivalent), enabling drop-in installation without adjustments to the hydraulic block.
4. What is the pressure and temperature rating of Flotte replacements?
Our vacuum brazed plate heat exchangers are rated for a maximum working pressure of 16 Bar (1.6 MPa) at temperatures up to 225°C. To ensure consistent quality, we pressure test each production run under a 24 Bar load, well above typical domestic boiler relief valve limits (3 Bar).
5. What is the minimum ordering volume (MOQ) and lead time for exporters?
For standardized aftermarket replacement plate heat exchangers (like the Greenstar 24i/28i series), the MOQ is typically 100 units. For smaller initial trials, we can supply standard stock. Production lead times range from 15 to 30 days depending on shipping terms (FOB, CIF, or DDP).
6. Do your products hold certification for European and British distribution?
Yes, our manufacturing facility is ISO 9001:2015 certified, and our products undergo pressure testing that complies with the European Pressure Equipment Directive (PED). The materials used conform to RoHS and WRAS criteria for hot-water appliances.