Why is it not recommended to use an on-off switch with steam grid humidifiers?

Using an on-off switch with steam grid humidifiers is not recommended primarily because it can lead to fluctuations in relative humidity levels. Steam grid humidifiers are designed to maintain a consistent output of moisture into the air. When the humidifier is turned off and then on again, the immediate change in operation can cause variations in humidity, making it difficult to achieve the desired stable environment.

Maintaining a steady level of humidity is crucial, as rapid changes can lead to discomfort and even affect indoor air quality. For instance, high humidity levels can promote mold growth, while low humidity can lead to dry skin and respiratory issues. Hence, relying on an on-off switch can compromise the effectiveness of the humidifier in maintaining the desired humidity level.

To ensure optimal performance, steam grid humidifiers are often better operated with variable control systems that allow for continuous adjustments, thereby avoiding the abrupt changes that occur when using a simple on-off switch.