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    You are here: Home1 / Shop2 / Water Treatment3 / Cleaners & Sealers4 / Fernox F3 Cleaner | Central Heating System Cleaner 265ml
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    Fernox Cleaner F3 liquid 265 ml central heating system cleaner in a white bottle with red cap and red‑blue label.

    Fernox F3 Cleaner | Central Heating System Cleaner 265ml

    £11.05 Inc Vat

    Fernox F3 Cleaner is a powerful central heating system cleaner designed to remove sludge, debris, and installation residues. Suitable for new and existing systems, it restores circulation, improves heat efficiency, and prepares systems for inhibitor protection.

    14 in stock

    SKU: FER-62455 Category: Cleaners & Sealers Brand: Fernox Water Treatment
    • Description
    • Additional information
    • Delivery

    Fernox F3 Cleaner delivers high-performance chemical cleaning for central heating systems. It removes sludge, flux residues, grease, and installation debris effectively. By restoring proper circulation and heat transfer, it helps systems run more efficiently and reliably. As a result, it improves heating performance and extends system lifespan.

    Over time, contaminants build up inside heating systems and restrict performance. Therefore, using a trusted cleaner such as Fernox F3 plays a key role in maintaining efficiency. It works well in both new installations and older systems that need restorative cleaning.

    What Is Fernox F3 Cleaner?

    Fernox F3 Cleaner is a non-acidic, fast-acting system cleaner that breaks down and suspends sludge and debris. Once the cleaner circulates through the system, installers can flush contaminants out easily. Consequently, the system becomes clean and ready for inhibitor protection.

    Because Fernox F3 works with all common heating materials, installers can use it safely in both modern and traditional systems. This versatility makes it a reliable choice for professionals and homeowners alike.

    Why Use Fernox F3 Cleaner in Heating Systems?

    Heating systems that contain sludge or debris often develop cold spots, restricted circulation, and higher energy usage. Therefore, system cleaning remains essential before adding an inhibitor or upgrading components.

    Fernox F3 Cleaner restores circulation efficiency by clearing blockages in pipework and heat exchangers. As a result, it improves heat distribution and reduces strain on system components.

    Powerful Sludge and Debris Removal

    Fernox F3 Cleaner actively removes flux residues, grease, and sludge from heating systems. This process keeps pipework clean and allows water to flow freely, helping the system perform at its best.

     

    Next Working Day Delivery: Yes, we hold all our products in stock at our 7000 sq ft Nottingham warehouse and at our 3000 sq ft warehouse in Market Harborough and use DPD for a tracked next-day delivery.

    Collection Available: You can always collect from our Nottingham location and help yourself to a free tea and coffee.

    Fernox Water Treatment

    Additional information

    Weight 0.35 kg

    Delivery

    Delivery costs to UK mainland

    Standard UK Delivery: £6.98 next working day delivery.

    Premium Delivery: before 12pm: £20.28

    Saturday Delivery: £28.62

    Highlands & Channel Isles: variable, please use the delivery calculator on the checkout page.

    For more details see our Delivery information here.

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    Why choose Kudos Trading?

    Kudos Trading has been supplying the UK with underfloor heating since 2001.

    As one of the UK’s longest-established specialists, we combine decades of experience with a personal, friendly service from our Nottinghamshire-based team.

    Read more

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    Our friendly expert team are on hand to help. Email us at sales@kudostrading.co.uk, phone us on 0115 9632314 or use our online form!

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    Contact Us

    Floor Heating Systems Ltd, Fairway Court, Wigwam Lane, Hucknall, NG15 7TA

    0115 9632314

    sales@kudostrading.co.uk

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