Rated 5 out of 5Â by PompeyParrot Used before and will use again
Had to drain my central heating system down as the water pump needed changing and the valves had seized. Previously dosed 4 years ago and the water that came out was clear with a few particles in suspension. Since dosing the system last time there has been no loss of performance of the radiators or water heat exchanger and the pump runs quietly with this in the system. So have used it again and will continue to use it.
21 Nov 2015
Rated 5 out of 5Â by Duobox As good as it gets
I always use Fernox and, as others have said, after every drain down the water runs reasonably clear. Great in older systems after flushing.
In my experience no simialr product does a better job and this is consistently good so I keep using it.
16 Nov 2015
Rated 5 out of 5Â by Theinspector FERNOX MB-1
This is the only protector that I have used over many years and in several properties, so I cannot compare it with other products. What I can say is - when I drain any system that has had MB-1 installed, the water runs clear without any significant sign of contaminants. That is good enough proof for me.
12 Sep 2015
Rated 4 out of 5Â by dutchreg Fernox MB-1
Expensive for what it is.
Very difficult to determine if it does the job.
Let you know in 10years time!!
Other than price, all my rating are subjective.
25 Sep 2013