From towel warmers to Cast Iron & Baseboard Radiators, we have what you need. We carry popular brands such as Burnham and Runtal. Radiators and convectors are heat exchangers designed to transfer thermal energy from one medium to another for the purpose of space heating. After the hot water heats the radiator, heat is  radiated into the room. The heat actually warms the air in two ways: by radiation and convection. Radiation accounts for only a small percentage of the heat given off by the radiator; a much higher percentage of the heat is distributed by means of convection. As the radiator warms the air next to it this heated air rises, drawing cool air into and through the radiator from underneath. This movement of air sets up vertical currents that will distribute heated air throughout the room.