Places like Heritage Cast Iron Radiators or Wagner Salvage in Philadelphia maintain huge inventories for contractors and homeowners rehabbing historic buildings.
Organizations like Habitat for Humanity may take them if they are in working condition to sell in their ReStores. who buys cast iron radiators
Are you looking to you have, or are you sourcing them for a renovation project? Places like Heritage Cast Iron Radiators or Wagner
They buy radiators as "Heavy Melting Steel" (HMS) or pure cast iron. who buys cast iron radiators
Because they are notoriously difficult to move, many "buyers" are simply neighbors with a truck who agree to haul them away for free.
These buyers see the radiator as a piece of history. They look for specific "ornate" or "princess" styles from the late 1800s and early 1900s.