Description
Fernox Cleaner F3 500ml – 56600
Product Description
Fernox Cleaner F3 500ml is a universal, pH-neutral central heating system cleaner designed to remove sludge, limescale, flux residues and other debris from heating systems. It helps restore heating efficiency, reduce boiler noise caused by contamination and support reliable system performance.
Suitable for both new and existing central heating systems, Fernox F3 is ideal for cleaning existing systems or preparing new installations before commissioning. Its non-foaming formula can also be used with suitable powerflushing equipment to help accelerate the cleaning process.
One 500ml bottle treats a heating system of up to 130 litres, approximately 16 radiators or 250m² of underfloor heating. It is compatible with common heating-system materials, including aluminium.
For ongoing protection after cleaning, Fernox recommends thoroughly flushing the system and adding a suitable inhibitor, such as Fernox Protector F1.
Key Features
– Effective system cleaning – Helps remove sludge, limescale and other heating-system debris.
– Suitable for new and existing systems – Ideal for cleaning before commissioning or as part of system maintenance.
– Helps restore heating efficiency – Removes deposits that can affect system performance.
– pH-neutral formulation – Designed for use in central heating systems.
– Non-foaming formula – Helps make the cleaning and flushing process easier.
– Powerflushing compatible – Can be used with suitable powerflushing equipment.
– Compatible with common system materials – Suitable for metals including aluminium.
– 500ml bottle – Treats up to 130 litres of system water, 16 radiators or 250m² of underfloor heating.
Technical Specifications
Specification| Details
Brand| Fernox
Product Name| Cleaner F3
Manufacturer Part Number| 56600
Product Type| Central Heating System Cleaner
Volume| 500ml
System Capacity| Up to 130 litres
Radiator Capacity| Up to 16 radiators
Underfloor Heating Capacity| Up to 250m²
Form| Liquid
Formulation| pH-neutral, non-foaming
Colour| Amber
Compatibility| Common heating-system materials, including aluminium
EAN / Barcode| 5014551566002
Package Contents
– 1 × Fernox Cleaner F3 Central Heating Cleaner, 500ml
Important Information
Always follow the manufacturer’s instructions for dosing, circulation and flushing. Allow the cleaner to circulate for the recommended period, then drain and thoroughly flush the system until the water runs clear. Heavily contaminated or larger systems may require additional treatment.
After cleaning, refill the system and add an appropriate central heating inhibitor to help protect against corrosion and limescale.
Keep out of reach of children and follow the product label and safety guidance.
Packaging Options
Choose your preferred packaging option before adding the product to your basket:
– Original Retail Packaging – Supplied in its original manufacturer packaging.
– Plain Packaging – Supplied without the original outer retail packaging, where applicable. The product itself is unchanged.
Please select the required option from the packaging dropdown on the product page.






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