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    Fernox

    Explore Fernox, a trusted leader in water treatment and filter solutions for central heating systems. With over 50 years of innovation, Fernox offers a wide range of products, including inhibitors, cleaners, scale reducers, and filters, designed to maintain system efficiency, prevent corrosion, and reduce energy costs. Perfect for professionals and homeowners seeking reliable, eco-friendly solutions to enhance heating system performance.

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    Fernox 22mm UB Filter

    Fernox 22mm UB Filter

    BF - 62631
    The Fernox 22mm UB Filter is a high-performance, inline system filter designed to protect your heating system from harmful debris and sludge. With easy installation and maintenance, this durable filter ensures optimal efficiency and extends the lifespan of your boiler and components.
    £172.89 incl tax
    Fernox 28mm Sigma HP filter NEW - Suitable For Heat Pumps Only

    Fernox 28mm Sigma HP filter NEW - Suitable For Heat Pumps Only

    62615
    Optimise your heat pump's efficiency with the new Fernox 28mm Sigma HP Filter. Designed specifically for heat pumps, this filter effectively removes debris and ensures peak performance of your heating system. With easy installation and durable construction, it's the perfect choice for maintaining a clean and efficient heat pump setup.
    £101.65 incl tax
    Fernox Electro Scale Reducer 22mm Compression

    Fernox Electro Scale Reducer 22mm Compression

    BF - 62552
    The Fernox Electro Scale Reducer 22mm Compression is an effective solution for preventing limescale build-up in your plumbing system. Easy to install and maintenance-free, this reliable device uses electrostatic principles to keep your pipes and appliances running efficiently.
    £170.96 incl tax
    Fernox F1 Central Heating Protector 500ml

    Fernox F1 Central Heating Protector 500ml

    56599
    The Fernox F1 Central Heating Protector 500ml is a premium inhibitor designed to prevent corrosion and limescale build-up in central heating systems. This easy-to-use formula ensures long-term system efficiency and protection, extending the lifespan of your heating components.
    £22.33 incl tax
    Fernox F3 Central Heating Cleaner

    Fernox F3 Central Heating Cleaner

    56600
    The Fernox F3 Central Heating Cleaner is a powerful and versatile cleaner designed to remove sludge, scale, and debris from central heating systems. This effective solution restores heating efficiency and prepares systems for the addition of a protector, ensuring optimal performance and longevity.
    £22.76 incl tax
    Fernox F7 Biocide

    Fernox F7 Biocide

    BF - 62393
    The Fernox F7 Biocide is a powerful treatment designed to eliminate and prevent bacterial and fungal growth in central heating systems. This easy-to-use biocide ensures a clean and efficient system, enhancing performance and extending the lifespan of your heating components.
    £95.63 incl tax
    Fernox Leak Sealer 500ml F4

    Fernox Leak Sealer 500ml F4

    56603
    The Fernox Leak Sealer 500ml F4 is an effective internal leak sealer designed to permanently repair small leaks and weeps in central heating systems. Easy to apply, this reliable solution minimises system pressure loss and helps maintain optimal system performance.
    £22.21 incl tax
    Fernox TF1 Anifreeze Valve 28mm

    Fernox TF1 Anifreeze Valve 28mm

    BF - 62664
    The Fernox TF1 Antifreeze Valve 28mm is a high-quality valve designed to protect central heating systems from freezing temperatures. Easy to install and maintain, this durable valve ensures continuous operation and prevents costly damage during winter months.
    £251.84 incl tax
    Fernox TF1 Sigma UB Filter 22mm 62631

    Fernox TF1 Sigma UB Filter 22mm 62631

    62631
    The Fernox TF1 Sigma UB Filter 22mm (62631) is a high-efficiency filter designed to protect central heating systems from debris and sludge. With its innovative design, this filter ensures optimal performance and extends the lifespan of your heating system by capturing contaminants effectively.
    £172.89 incl tax
    Fernox Water Hawk 400g

    Fernox Water Hawk 400g

    61023
    Achieve reliable seals with Water Hawk Jointing Compound 400g. This compound ensures secure joint connections in plumbing and heating systems. Easy to apply and resistant to high temperatures, it's ideal for both DIY enthusiasts and professional plumbers.
    £9.90 incl tax
    Electrolytic Scale Reducer

    Fernox Electrolytic Compression Scale Reducer 15mm

    62359
    The Fernox Electrolytic Compression Scale Reducer 15mm provides whole-house protection against lime scale build-up, using electrolytic principles to alter the structure of hardness salts. Effective for up to 10 years, this easy-to-install solution safeguards appliances like boilers, kettles, and showers, enhancing energy efficiency and performance in hard water areas.
    £37.05 incl tax
    Fernox Electrolytic Compression Scale Reducer 22mm

    Fernox Electrolytic Compression Scale Reducer 22mm (REPLACED BY 62552)

    62304
    The Fernox Electrolytic Compression Scale Reducer 22mm is designed to prevent limescale build-up throughout your home. Utilizing advanced electrolytic technology, this durable solution alters hardness salt structures, providing effective scale protection for up to 10 years. Perfect for safeguarding appliances like boilers, showers, and kettles in hard water areas, it enhances energy efficiency and prolongs equipment life.
    £43.29 incl tax
    Antifreeze Protector Alphi-11 5 Litre

    Fernox Anti Freeze 5ltr Tub - 61033

    61033
    Antifreeze Protector Alphi-11 5 Litre (Product Code: 61033) is a premium combined antifreeze and inhibitor solution, designed to protect domestic central heating systems against internal corrosion and limescale. Suitable for all common system materials, Alphi-11 ensures long-lasting performance when concentration levels are maintained annually. Protects to -11°C at 25% concentration and to -22°C at 40%. Easy to apply and compatible with all Fernox products.
    £81.75 incl tax
    Fernox Powerflow Flux 350g

    Fernox Powerflow Flux 350g

    20436
    Fernox Powerflow Paste 350g is a premium, WRAS-approved soldering flux designed for copper plumbing systems. This soft, white paste is easy to apply and effective for both lead-containing and lead-free solder alloys. Ideal for use with end feed and integral ring solder fittings, it ensures a clean, efficient joint and is suitable for potable water applications. With self-cleaning properties, it’s perfect for both hot and cold water systems.
    £17.17 incl tax
    TF1 Total Filter

    Fernox/Gold 22mm TF1 Inline Total Filter

    59256
    The Fernox TF1 Total Filter is an award-winning hydrocyclonic and magnetic in-line filter designed to remove both magnetic and non-magnetic contaminants from central heating systems. Constructed from high-strength composite plastic, this filter is easy to install, clean in minutes, and doesn’t restrict flow. With a 5-year warranty and efficient contaminant collection, the TF1 Total Filter ensures optimal system performance without the need for disassembly.
    £176.30 incl tax
    Fernox 28mm TF1 Inline Total Filter

    Fernox 28mm TF1 Inline Total Filter

    59257
    The Fernox TF1 Total Filter is an award-winning hydrocyclonic and magnetic in-line filter designed to remove both magnetic and non-magnetic contaminants from central heating systems. Constructed from high-strength composite plastic, this filter is easy to install, clean in minutes, and doesn’t restrict flow. With a 5-year warranty and efficient contaminant collection, the TF1 Total Filter ensures optimal system performance without the need for disassembly.
    £227.87 incl tax
    LS-X External Leak Sealer 50ml

    Fernox Sealer LS-X 50ml

    61016
    The Fernox LS-X External Leak Sealer 50ml is a versatile, fast-acting silicone paste designed for sealing leaks and jointing hot and cold water services, including potable water. Ready to use with no mixing required, it’s ideal for compression joints and screwed fittings. LS-X remains flexible, never sets rock hard, and won’t shrink or crack over time, ensuring long-lasting reliability.
    £8.38 incl tax
    Hawk White Jointing Compound 400g

    Fernox Hawk Paste 400g

    61024
    The Fernox Hawk White Jointing Compound 400g is a high-quality pipe jointing compound suitable for general applications, including Natural Gas, non-potable water, steam, air, brine, alcohol, and L.P. Gas. Compliant with BS EN 751-2 Class A, this non-toxic and environmentally friendly compound is ideal for pipe diameters up to 25mm and can be reinforced for larger pipes, ensuring reliable, leak-free joints.
    £6.97 incl tax
    System Health Check

    Fernox System Health Check Kit - 61161

    61161
    The Fernox System Health Check is a premier postal diagnostic service for analysing central heating system water quality. This service provides accurate laboratory results to identify debris, cleaner residue, or incorrect dosing, ensuring optimal system performance. Easy-to-follow recommendations are provided in a detailed report, with results accessible online for added convenience.

    Simply fill one sample bottle with system water and the other with mains water (i.e. kitchen tap), complete the enclosed order form and return the samples and questionnaire in the Freepost envelope. The results will be returned directly to the customer.

    Interpretation of the results is based on the samples being representative of the system and treatment being with Fernox products.
    £49.14 incl tax
    TF1 Omega Filter

    Fernox TF1 Omega Filter 22mm 62248 Slip Socket Connection

    62248
    The Fernox TF1 Omega Filter 62248 is a compact, high-performance system filter designed for use in restricted spaces. Manufactured from durable nickel-plated brass, it combines Hydronic Particle Separation (HPS) technology and magnetic filtration to efficiently remove magnetic and non-magnetic debris. With easy installation on horizontal or vertical pipework and a market-leading 25-year warranty, it ensures reliable protection for heating and cooling systems without impacting flow or pressure.
    £134.49 incl tax
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