Fernox 56599 500ml F1 Protector

I was experiencing some problems with my heating system and the boiler kept cutting out, a friend suggested that I may have a blockage in the pipe especially since one of the radiators produced black water when I released some water from it, so I purchased some Fernox F3 cleaner and ran that through the system for a few days and then once fully flushed out I refilled using this F1 protector, and so far the boiler was worked perfectly and think its even making less noise than it did before. If this continues to be a success I plan to clean and protect on an annual basis to ensure the heating system is it good condition. There are other brands on the market but I chose Fernox as an internet search showed it had a good reputation and so far I have not been disappointed and so I will continue to use Fernox. Using this product and a weekend of my time has saved me a big plumbers expense.

Make sure when purchasing this is right for your heating system ask for advice first!

We have used this Fernox F1 protector fluid in our central heating system for many years and find it excellent as a corrosion/rust preventative.

Amazon urged me to review so here goes This kind of product works in the background so its difficult to say how well it works I can only say the water in my rads stays clean and I have never had any blockage etc. As far as I know Fernox is the premium product and you can get cheaper but for the number of times you buy it (once a year) I buy the best

fernox is a liquid put into heating systems. i put it in as instructions. and thats all i can say.

Dose the job

I always use Fernox in my header tank for my heating sytem. I change it once a year,by by empty the tank and cleaning it

I added this after flushing the system. My radiators now run hotter and the boiler is much quieter.