Humidifiers and diffusers are often confused, as the products can look similar on the outside or have similar functions. But there are several important differences between these technologies.
If you need more moisture in the air in your home, then you need a humidifier. If you only want to add fragrance to the air, and not moisture, then a diffuser is the proper product. Diffusers simply do not hold enough water to impact the humidity level of a room but are effective in spreading scent efficiently in a space.