The TF1 Omega Filter is one of the best filters made.

- Peter Lo Russo, Surrey

Fernox gives real confidence. It does all expected. Always used Fernox products, recently needed to drain partially to fit a new valve. No evidence of sediment. I topped up with the F1 and several weeks later the heating is working perfectly. Fast warm up, all radiators even heat, no trapped air.

- Ramair, Lightwater