The Nortec Humidity 1519001 Cylinder is a genuine replacement steam cylinder designed for compatible Nortec humidifiers used in residential, commercial, and industrial HVAC systems. It works by heating water through internal electrodes to generate clean steam, which is distributed into the air stream to maintain proper indoor humidity levels. Used with steam humidification equipment, ... https://www.partshnc.com/1519001-nortec-humidity-cylinder-201-005-010-110-2401