What is the difference between a humidifier and aroma diffuser?
- LEE JEff
- Oct 8, 2024
- 2 min read
Humidifier and aroma diffuser are both household appliances with similar appearances and overlapping functions. Does that mean they can be used interchangeably? In fact, there is still a big difference between a humidifier and aroma diffuser. After reading the following content, you won't confuse them.

First, let's take a look at the functionality! The main function of an aroma diffuser is to add water-soluble essential oils and purified water; By emitting aroma molecules through water vapor, different essential oils have different effects. As the name suggests, the function of a humidifier is to humidify, and it can only add clean water. Humidifiers have significantly better air humidity regulation than aroma diffusers.
Next, look at the material! Due to the corrosiveness of most essential oils, most aroma diffusers are made of PP material. The chips and atomizing blades of aroma diffusers are specially developed for essential oils, which can resist oil, water, and chemical corrosion. However, ordinary humidifiers use ABS or AS plastic materials as water tanks, so they can only add clean water and have certain requirements for water quality. Otherwise, it may be harmful to human health.
Then let's take a look at the amount of mist! The function of an aroma diffuser is to enable people to better absorb essential oils, so the mist density of the aroma diffuser should be high and very thin to ensure that the mist particles are delicate and uniform, and stay in the air for a long time. The main function of a humidifier is to humidify the air, so it usually uses atomizing blades with a diameter of 20-25mm, which have a thick mist volume and large particles.
Because the aroma diffuser needs to change water and essential oils at any time, the water tank design is simple and easy to clean, and the storage space is also very small. Most humidifiers have a backup water tank design, so the internal structure is complex and cleaning solution is difficult.

There is also an atomization technology that is unique to aroma diffuser. The ultrasonic atomization technology used in the aroma diffuser can atomize water molecules to the nanometer level, effectively dispersing and diffusing aromatherapy essential oils into the air, allowing us to bathe in fragrant air. The humidifier only adds clean water for humidification, so there is no need for ultrasonic atomization.
Humidifiers are more suitable for places with dry weather or environments with long-term air conditioning, as they can regulate indoor humidity balance. For girls who work in air-conditioned rooms for a long time, they are a small appliance that is beneficial to skin health. So the functionality of humidifiers is clearer and stronger.

And the aroma diffuser is not only convenient to carry, but also can be used as a night light. The water mist added with essential oils can not only relieve fatigue and help sleep, but also benefit our body if we persist for a long time. Compared to humidifiers, it is a must-have small home appliance for those who pursue quality of life.
Comments