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Humidifiers vs. Diffusers It's easy to confuse humidifiers and diffusers. They operate similarly and even share many matching components.

Hathaspace Marble Diffuser How gorgeous is this Hathaspace Marble Diffuser ($50)? It works as both a diffuser and humidifier, which is ideal if you're looking to make your space a little calmer.

The Vocolinc Flowerbud is the only HomeKit-enabled humidifier that also can act as a smart diffuser, though it does the latter much better than the former.

If you're looking for a decent humidifier with a built-in diffuser for your smaller rooms, the Levoit LV600HH might fit your needs.