Ultrasonic diffusers use electronic frequencies to create vibrations in water, which creates a fine mist of water and essential oils released into the air. Vaporizers provide humidification and will produce a nice scent in a small area.
Ultrasonic diffusers can provide a spa-like atmosphere goes with a chemical-free aroma. Ultrasonic vaporizers are often equipped with colorful lighting and a variety of timer options. They are generally very quiet.
It’s important to clean ultrasonic aroma diffusers regularly, because oil residue can collect on surfaces as well as will cover the ultrasonic disc at the bottom of the unit.
Beware of inexpensive, poorly made ultrasonic aroma diffusers as they come with short warranty periods. You could end up purchasing several units within 10 months' time.