There are two main types of mist systems - evaporative and ultrasonic. Evaporative systems use a fan to blow air across a water-soaked pad, which converts the water into a fine mist. Ultrasonic systems use high-frequency sound waves to create tiny bubbles that burst, releasing a fine mist. Both types of systems can be effective at cooling the air and reducing humidity levels.

Two main types of mist systems are the ultrasonic and the nebulizer type. The ultrasonic type makes use of high-frequency sound waves to produce a fine mist. This type is relatively quiet and economical to operate, but it can be prone to clogging. The nebulizer type makes use of a vibrating membrane to produce a fine mist. Nebulizers are generally more expensive than ultrasonics but less prone to clogging.