A humidistat is a device used to measure and control the humidity levels in a given space. It works similarly to a thermostat, but instead of regulating temperature, it monitors moisture levels in the air. When humidity rises above a set point, the humidistat can activate dehumidifiers or ventilation systems to reduce moisture, helping to maintain a comfortable environment. These devices are commonly found in homes, offices, and industrial settings where humidity control is essential. Proper humidity levels can prevent issues like mold growth, damage to furniture, and discomfort for occupants. Humidistats are often integrated into HVAC systems for efficient climate control.