Under the double "heating" of winter heaters and summer air conditioners, the air in our residences often becomes so dry 

that it causes discomfort. Dry throat, tight skin, annoying static electricity... At such times, an efficient humidifier becomes 

the key to improving the quality of life. Among various types, the ultrasonic humidifier, with its unique charm, has dominated 

the market. How does it work? And how should one choose? This article will fully decrypt it for you. 

I. Source of Magic: The Principle of Ultrasonic Oscillation and Atomization

The working process of an ultrasonic humidifier is more like a "magical water manipulation" rather than the traditional heating 

and evaporation method.

Generating oscillation: A piezoelectric ceramic transducer (the core component) is installed at the bottom of the machine. 

When an electric current is applied, this transducer will generate millions of high-frequency ultrasonic vibrations per second.

Breaking water molecules: This intense vibration is transmitted to the water surface, and the powerful force instantly "cracks" 

the water into extremely fine droplets, with diameters typically ranging from 1 to 5 micrometers, forming a visible white water 

mist that can be seen by the naked eye.

Spraying water mist: The fan inside the machine blows these fine water droplets into the air. The water mist evaporates rapidly, 

thereby uniformly increasing the air humidity in the surrounding environment.

In simple terms, it does not "boil" water to produce steam, but uses "vibration" to directly "crush" water into micrometer-sized 

particles. Therefore, it has significant advantages of extremely low energy consumption and almost silent operation during operation. 

II. Revealing the Advantages and Disadvantages 

Advantages:

Ultra-low noise: Since there is no boiling noise, only slight wind and water sounds, it is very suitable for use in environments 

that require quietness such as bedrooms and study rooms. Using it at night will not affect sleep.

High efficiency and energy saving: Its power is much lower than that of heating-type humidifiers. Usually, it only has a power 

of tens of watts to several tens of watts. The electricity cost for long-term use is almost negligible.

Quick humidification: The fog output is large and intuitive, allowing you to quickly feel the change in humidity.

Heating and cooling options: Some models have heating functions, which can output warm and humid fog, making the winter 

use more comfortable.

Diverse designs: The technical structure is relatively simple, so it can be designed into various beautiful and compact shapes, 

combining practicality with decoration. 

Disadvantages and Precautions:

"White Powder" issue: This is the most criticized aspect of ultrasonic humidifiers. If tap water containing minerals (such as 

calcium and magnesium ions) is used, the impurities in the water will be sprayed out along with the water mist, settling on 

furniture, floors, or even being inhaled into the lungs, resulting in white powder contamination. Solution: It is strongly 

recommended to use pure water or distilled water.

Risk of bacterial growth: If the water tank is filled with water for a long time and not cleaned properly, it is prone to bacterial 

and mold growth, which will spread into the air along with the water mist. Solution: The water tank must be cleaned regularly 

(suggested daily), and disinfected thoroughly once a week using diluted white vinegar or a dedicated cleaner.

Local over-humidification: If the mist outlet is directly facing the wall or furniture, it may cause local condensation water 

droplets, causing damage. Pay attention to the placement location. 

III. Application Scenarios: Where is it needed?

The applicability of ultrasonic humidifiers is extremely wide:

Home environment: Bedroom (ensuring comfortable breathing during sleep), living room (sharing a humid space with the 

entire family), study room (protecting books and musical instruments from dryness).

Office: Placed on the desk, it alleviates the dryness caused by air-conditioned rooms, improving work efficiency and comfort.

Special demand spaces: Greenhouse flower garden (providing an environment for moisture-loving plants), collection room 

(maintaining stable humidity to protect collections). 

IV. Purchase Guide: How to Choose the Right One?

When faced with a wide variety of products on the market, focusing on the following key points will ensure you make the right choice:

Humidification Volume (l/h): This is the core indicator. Choose based on the room size. Generally, for rooms of 30-50 square 

meters, a model with 3l/h of humidification is recommended. For rooms of 50-80 square meters, a model with 5l/h of humidification 

is recommended. It's not about the larger the better; what's suitable is the most important.

Smart Humidity Stabilization Function: This is a very important feature! It can automatically monitor the environmental humidity 

and stop humidifying or switch to low-speed operation once the set value (such as 55% RH) is reached, effectively avoiding 

excessive humidification.

User Convenience: The top water filling design (no need to flip the water tank, just add water from the top) and the large water 

tank (easy to reach in for cleaning) will greatly enhance the happiness of daily use. 

V. Typical Case: Humidification Project for a Medium-sized Textile Workshop

Project Background: A medium-sized textile enterprise in the northern region of China. In the winter heating period, the relative 

humidity in the spinning workshop, which covers an area of approximately 300 square meters, often drops below 30%. The low 

humidity leads to fragile and easily broken yarns, severe static electricity (causing flying fibers and dust), which not only affects 

production efficiency but also significantly increases the defect rate.

Demand Analysis: The enterprise needs to stabilize the relative humidity in the workshop at 65%-70% RH to reduce breakage 

rates and static electricity, improve yarn strength and product quality. After calculation, two industrial ultrasonic humidifiers with 

a humidification capacity of 12 kg/h were selected for this workshop.

Reasons for Selection: The 12 kg/h humidification capacity can meet the humidification needs of a large space; the two devices 

can be arranged in separate areas to achieve a more uniform humidification effect and serve as backups for each other. The 

equipment has an intelligent constant humidity control system that can automatically monitor the environmental humidity 

and start or stop; it uses an integrated atomization module, which is convenient for later maintenance; and it is also equipped 

with an automatic water shortage protection function.

Effect and Benefits:

The humidity in the workshop is stably maintained within the ideal range of 65%-70% RH.

The yarn breakage rate has significantly decreased, and production efficiency has improved.

Static electricity has been largely eliminated, flying fibers and dust have reduced, and the air in the workshop is cleaner.

Product quality has significantly improved, and the defect rate has decreased. 

Summary:

The ultrasonic humidifier is a double-edged sword. It offers an efficient and quiet humidification experience, but it also imposes 

higher requirements on water quality and daily cleaning. If you are willing to pay a small cost of "using pure water" and "regular 

cleaning", it will surely reward you with a room full of fresh and moist healthy air.