Protector F1 500ml

Protector F1

Approved for use by all major boiler manufacturers – one bottle treats up to 97% of UK homes.

Express Inhibitor Test

Express Inhibitor Test

Making things simple, the brand new on-site testing solution.

Express 400ml Range

Express 400ml Range

Doses in 30 secs – no system drain down necessary to save time.

Powercleaner F8

Powercleaner F8 500ml

Super-strength, fact-acting citrate cleaner.
Neutraliser not needed, providing rapid results.

TF1 Sigma Filter

TF1 Sigma Filter

Simple, unique sealed design – slip socket & valve options

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60 years of innovation
60 years of sustainability
60 years of expertise


60 years in, and it's just the beginning.

Fernox is celebrating its 60th year in 2024. As the world’s first chemical water treatment company, the last six decades has seen Fernox consistently lead the way in the heating industry – from pioneering the use of chemicals, testing and filter technology to keeping heating and renewable systems energy efficient.

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Featured Products

TF1 Sigma Filter

A high-performance, precision-engineered in-line system filter, the TF1 Sigma Filter utilises a sealed, lidless design for increased reliability and strength.

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