Difference between Humidifier, Dehumidifier, Hygrometer and Humidistat

As you talk about humidity you will hear about the Humidifier, Dehumidifier, Hygrometer and Humidistat a lot.  All of them are related to humidity but their function is different.


Humidifier :  Adds moisture. Search Amazon.com for humidifier
Dehumidifier :  Removes moisture.Search Amazon.com for dehumidifier
Hygrometer : Measures humidity.Search Amazon.com for hygrometer
Humidistat : Measures and control the humidity (by controlling the humidifier or dehumidifier) Search Amazon.com for humidistat

Humidifier, Dehumidifier, Hygrometer and Humidistat