Cookson Electronics
Forsyth Road
Woking Surrey GU21 5RZ

Email: This email address is being protected from spambots. You need JavaScript enabled to view it.

Phone: 0870 601 5000

Fax: 0870 601 5005

Other information

Other information:


Technical Help Line
Manned 8:30am to 5:00 pm.

Fully automated expert self-diagnosis system out of hours.
Tel: 0870 870 0362 

About Us

Fernox was the world’s first water treatment company. Since its inception in 1964, the firm has had an innovative, pioneering spirit which continues to this day.
Fernox now markets a respected range of leading products  and services globally, and is the No. 1 brand in its field. The company’s products are cost-effective, work well in a wide variety of conditions and are currently available in 21 languages.

As a company, Fernox operates in four distinct areas:


Fernox’s outstanding achievements are the result of its commitment to extensive, in-house research and development. This has led to innovative products which help Fernox build on its enviable reputation as the only business of its kind to cut across the traditional heating market. The firm also focuses on the ever more important area of renewable technologies with heat transfer fluids for solar applications, ground-source and air-source heat pumps.