humidifier
An appliance that adds moisture to the air, commonly used in dry winter months.
In winter I sleep with a humidifier on.
A dehumidifier, which removes moisture from the air, opposite function of 加湿器.
乾燥機 removes moisture to dry things, while 加湿器 adds moisture to the air, making them opposite in function.
Standard kanji spelling for 'humidifier'.
Rarely used kanji form; 器 is the usual character for appliances.
Compound of 加湿 (かしつ, 'humidification') + 器 (き, 'device'). The spelling 加湿機 is a variant using 機 (き, 'machine'), but 器 is more common for small appliances.