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How to Clean a Cast Iron Radiator

Cast iron radiators have been around since the 1860s, using steam to heat the accordion-shaped coils and keep rooms warm during the winter. A central boiler heats water, creating steam that rises through the pipes and into the radiators, and the tightly folded coils retain heat for longer, staying hot even once the boiler is turned off. But these radiators lose their efficiency when dust and grime