Install a radiator cover over the unit. These wooden boxes, available at hardware and home improvement stores, keep little fingers away from the radiator while providing even heat distribution
Install a hearth baby gate around the radiator. Choose a model that adjusts to irregular shapes and comes equipped with a door to provide easy access by adults.
Arrange furniture in front of the radiator. Set the piece at least three to four inches in front of the steam heater to keep curious children away while allowing the heat to circulate throughout the space.
Teach older children to keep away from the radiator. Once the child is older than 2, is old enough to learn the radiator is hot and the consequences of touching its surface.