The Best Essential Oil Diffusers in 2020

Diffusers are most often used with pure essential oils to bring aromatherapy benefits to a small space, such as a living room or bedroom. In fact, according to the Clinic, aromatherapy can help improve sleep and mood, among other touted benefits like relaxation, increased energy, and enhanced concentration. There are thousands of diffusers on the market, but the most common and affordable type of diffuser is ultrasonic.

Ultrasonic diffusers work by using vibrations to turn water molecules and the essential oil into a fine, cool mist. This improves the diffusion process and preserves the therapeutic benefits since the essential oils aren’t heated or diluted by steam. In contrast, nebulizing diffusers turn the oil directly into a mist without heat or water, creating a stronger scent. Nebulizers typically come at a much higher price point than their ultrasonic counterparts. Because of the availability, features, and price, ultrasonic models are our top pick.

There are a few things to consider when buying an ultrasonic diffuser, from tank size to misting modes. Let’s start with tank size; tanks can range from 400ml up to 500ml. Larger tanks can fill a larger space with scent and can last longer before the water needs to be replaced. Smaller tanks, while needing a frequent refill, can satisfy a small room and are ideal for portability. Whether a diffuser offers intermittent versus continuous misting is also important to consider. And luckily, most models do both. Intermittent mode releases mist in increments, so the diffuser can last longer without needing a water refill. Continuous mode, however, mists continuously without stopping, meaning the tank will run out of the water more quickly.

There are other features that you may also want to consider when purchasing, like whether a model comes with LED lights, automatic shut-off, and the ability to set a timer.