The Sentinel X800 Central Heating Cleaner Liquid is a 1 litre bottle of clear-coloured cleaning solution specifically designed for boiler heating systems. Manufactured by Sentinel, this storage tank water heater cleaner is brand new and unopened. Perfect for maintaining your central heating system's efficiency and preventing build-up of limescale and debris, this product is an essential addition to your home maintenance routine. Its convenient size and specific formulation make it ideal for keeping your heating system in top condition.