The DS40 from Fernox is a fast-acting cleaner for removing limescale, magnetite (sludge) and other material deposits which may have collected from your central heating system.

Ideal for use with powerflushing units for extra efficiency and rapid cleaning.

It can also be used to descale a boiler separately.

Features and Benefits:

  • Removes limescale, black sludge and other deposits rapidly.
  • Heating efficiency can be improved and circulation restored.
  • Suitable for use with all mixed metal systems.
  • The free-flowing nature of the powder makes use with powerflushing units a breeze.
  • Supplied with neutraliser sachets.
  • 1.9kg box
CE Approved


Techincal Drawings

£28.00 (Inc. VAT)

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Fernox DS40 System Cleaner 1.9kg - 61102 Reviews

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4.0/ 5
1 reviews
  • Richard. Lathbury
    4/ 5

    did exactly as quoted on the box. at a very good price. cleaned system well. good product.