Fernox Central heating Protector 4L.This corrosion proofer protects against corrosion and limescale formation to maintain system efficiency and is suitable for mixed metal domestic central heating systems and combi boilers.

Fernox Central heating Protector 500ml.This central heating protector provides long term protection of domestic central heating systems against internal corrosion limescale formation and bacterial contamination and is suitable for all types of boiler...

When used in conjunction with Cleaner F3 gas savings of up to 15% can be achieved every time you heat your room.