![eji65vmjqsbcwm8ynyyw](https://utterbuzz.com/wp-content/uploads/2020/12/eji65vmjqsbcwm8ynyyw-640x359.jpg)
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…