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Here's a simple home DIY project that will help stop corrosion in your central heating system:
Did you know that oxygen in your heating system leads to corrosion and the buildup of sludge? You should bleed radiators each winter to remove air from heating systems. Then add a corrosion inhibitor, if sludge buildup persists.
Read the manufacturer's instructions for recommended amounts. Add a liquid inhibitor to the feed and expansion cistern of an open vent system. For a sealed system, buy a cartridge that injects the inhibitor through the air bleed valve on the radiator. Follow the manufacturer's instructions meticulously, and if you're in doubt it's always a good idea to call in a service contractor.