Fernox Protector F1 500ml Central Heating Inhibitor 56599

Fernox Protector F1 500ml is a high-performance central heating inhibitor designed to provide long-term protection against corrosion and limescale formation in domestic heating systems.

It combines multiple corrosion and scale inhibitors to protect the metals within the heating system and help prevent the formation of damaging sludge and deposits. Enhanced pH buffering helps maintain system water between pH 6.5 and 8.5, the optimum range for protecting mixed-metal heating systems.

One 500ml bottle treats a heating system of up to 130 litres, 16 radiators or 250m² of underfloor heating. Protector F1 is suitable for all types of boilers, radiators and pipework systems and is compatible with commonly used heating system materials, including aluminium.

For best results, contaminated systems should be cleaned and flushed before adding Protector F1. Fernox recommends checking inhibitor concentration annually as part of routine boiler or heating system servicing.