When I dose with Boiler Noise Silencer F2, do I also need to use a Fernox Protector?

Yes, Fernox Boiler Noise Silencer F2 is designed for use with any Fernox Protector.

It should be left permanently in the system with Protector F1 or Protector + Filter Fluid and replaced or topped up at the same time.

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How to clean a heating system?

Normally a treatment will last the life of the system but an annual check to determine whether further dosing is necessary is recommended. If the system is drained, it will need to be re-treated with a further full dose of Protector. You can check if the system is properly dosed using a Fernox Protector Test Kit.

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