Anden Replacement Steam Canister with O-RingThe steam canister AS80 is the beating heart of your Anden humidifier, responsible for generating steam. Current runs between two electrodes within the canister, heating your water to a boil and creating steam that is distributed through the humidifiers fan pack. Made in Madison, Wisconsin, the AS80 Steam Canister is uniquely designed to fit the Anden model AS35FP Steam humidifier. Remember to replace it at the start of each heating season for optimal