High performance magnetic filter and premium chemicals to help reduce heating and maintenance bills and maintain heating efficiency. In-line, push-fit magnetic filter extends the operational life of a central heating system and reduces carbon emissions. MC1+ central heating system protector prevents both corrosion and the depositing of limescale. MC3+ central heating system cleaner removes both system corrosion and limescale deposits. Suitable for all central heating systems. 10 Year Manufacturers Guarantee (Registration Required, T&Cs Apply) Maintains Heating Efficiency Reduces Carbon Emissions Extends Heating System Operational Life Treats 125Ltr 10 Year Manufacturers Guarantee (Registration Required, T&Cs Apply) Maintains Heating Efficiency Reduces Carbon Emissions Extends Heating System Operational Life Treats 125Ltr