Rated 5 out of 5Â by Verified Reviewer Still the go to product for CH
This has long been the go to product for central heating corrosion inhibitor where there is an open header tank. Used in existing systems for over 30 years it has not failed - they are still running as well as ever - including the boilers! Maybe not PC re energy efficiency but it just shows how good this product is.
30 Aug 2016
Rated 4 out of 5Â by Mullsy Fernox/Screwfix
Radiator had to come out for new wall panel. On draining found water to be turning dirty. Was over 6 years since serviced with Fernox protector. 10 minutes in car to Screwfix, available in stock, well priced and out in five. Back home, wall panel fitted, radiator painted, Fernox into the system and hopefully another 8 years of service from potterton boiler and system. Great having a screwfix store, extensively stocked and close bye.
3 Apr 2016
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