Features of Aosun Humidistat Extractor Fan
- Aosun offers consistent and reliable sensor-sensitivity on our Humidistat Extractor Fan
- Our Humidistat Extractor Fan is equipped with a highly-visible digital display so you have real time monitoring data on humidity levels
- Run by a powerful but quiet motor that produces noise level ranging at 26dB
- Splashproof that has IP44 water resistance to ensure safety
- With Aosun Humidistat Extractor Fan you can preset its running time after being triggered on
- Aosun installed safety electrical components on Humidistat extractor fans such as double insulated wirings.
Leading Humidistat Extractor Fan Manufacturer in China
Humidistat Extractor Fan is a type of extractor fan that has built-in capability of regulating the air humidity automatically. Suitable to be used in bathrooms, toilet rooms and showers. Extractor fans prevent mold growth and bacteria. Unlike conventional extractor fans that operate manually, Humidistat Extractor Fans are triggered to run when excessive air humidity is detected. Detection happens when bathrooms, showers or toilets are being used. This prevents the unnecessary running of extractor fans. This type of extractor fan is waterproof with IP44/IPX4 resistance. Aosun Humidistat extractor fan sensor is highly-accurate, consistent and reliable. Our Humidistat Extractor Fan can be installed on the ceiling, wall and window pane.

AOSUN’s smart bathroom extractor fan automatically adjusts airflow with a built-in humidistat, ensuring perfect humidity control and energy efficiency.

Our 150mm silent extractor fan combines quiet performance and humidity sensing, keeping your bathroom fresh and moisture-free.

AOSUN’s compact 100mm extractor fan offers quiet yet powerful ventilation with an integrated humidistat for automatic moisture detection.

Our centrifugal extractor fan with humidistat delivers strong air pressure and automatic humidity regulation—ideal for modern bathrooms.

AOSUN’s ceiling-mounted fan features a built-in humidity sensor that activates when needed, providing hands-free, efficient air management.

Our 125mm axial exhaust fan ensures smooth airflow and automatic humidity control to maintain clean, dry bathroom conditions.

AOSUN’s axial extractor fan with 88m³/h capacity detects humidity changes instantly, promoting consistent air quality and comfort.

Our centrifugal fan includes both a humidistat and timer, letting you set operation schedules while maintaining ideal moisture levels automatically.
What is Humidistat Extractor Fan
Aosun’s humidistat extractor fan is specifically designed for application scenarios with high humidity, such as shower rooms, restrooms, bathrooms, etc. It typically installs a sensor to monitor the air humidity. Once the humidity of the environment is too high, the automatic control system will open the humidistat extractor fan. It can maintain a normal level of air humidity. The sensor of the humidistat extractor fan offers high sensitivity and precision, helping you reduce the environmental issues caused by high humidity.
Types of Humidistat Extractor Fan

Based on the different installation areas, the humidistat extractor fan can be divided into various types. Different types of fans have unique features and performances; you should consider actual requirements comprehensively when choosing. Knowing the common types of the humidistat extractor fan will help you make a better decision.
Wall-Mounted Fan
The wall-mounted fan is one of the most widely used types of humidistat extractor fans. It is directly installed on the outdoor walls, discharging humidistat air through short ducts. This extractor fan has high efficiency and is easy to install without any complex ceiling construction. Its cost is relatively low, and suitable for small or medium commercial spaces. However, the wall-mounted humidistat extractor fan has a limited static pressure, which is not proper for long-distance ducts.
Ceiling-Mounted Fan
Unlike wall-mounted extractor fans, the ceiling-mounted fan has a more complex installation process. It is generally installed inside the ceiling, exhausting the air inside to the outlet. The ceiling-mounted extractor fan can retain a simple panel with the air inlet, improving the visual appeal of the entire space. Most components of the ceiling-mounted fan are inside the ceiling, so it generates low noise when operating. If your project has a silent demand, it may be a good choice.
Inline Extractor Fan
The inline extractor fan is not directly installed on the surface of walls or ceilings, but embedded in the interior of ventilation ducts. It has significant advantages in airflow, static pressure, and overcoming resistance, and is suitable for long-distance ducting. The inline extractor fan is typically installed in a concealed space and is far away from human activity areas, so the noise of operation can be almost ignored. This type of fan also has powerful extraction to meet the requirements of a large space.
Advantages of Humidistat Extractor Fan

Maintain Health and Safety
High humidity of the environment may cause mold on the walls or ceilings, even generate harmful microorganisms such as bacteria and fungi. This will not only damage the equipment but also affect human health. The humidistat extractor fan can reduce the device pollution of too high humidity, reducing maintenance costs and legal risk. At the same time, Aosun’s humidistat extractor fan possesses an IP44/IPX4 waterproof rating, avoiding circuit problems caused by water. The safe electrical components with double insulation of the fan can also improve the safety of your devices.
Energy Efficiency
A traditional extractor fan usually relies on the manual switch, which is prone to causing failures, such as energy consumption or equipment damage. While the humidistat extractor fan has an automatic sensor, which can control the fan to operate only when necessary. It can monitor the humidity change of the air conditioner 24 hours nonstop. When the air humidity is too high, the fan will start to operate until it comes to a normal level. This can reduce your annual electricity costs and achieve overall benefits, decreasing the energy consumption to about 30% of a traditional fan.
Customization Options
The humidity threshold of the fan can be adjusted flexibly, meeting different application standards. The humidistat extractor fan can also be added with various additional functional components to satisfy customized requirements. For example, you can combine the extractor fan with the LED system, making it possible to simultaneously meet the air ventilation and lighting needs.
Smart Control
The humidity extractor fan can also achieve automatic and remote adjustment, providing high convenience and low manual costs. It has a smart automatic system, which can independently achieve the operation or control of the fan. The automatic system also supports remote monitoring and centralized management, meeting the smart operation requirements of large commercial applications.
How to Select a Proper Humidistat Extractor Fan

When choosing the humidistat extractor fan, you should consider various factors to achieve maximum benefits. Different decisions will affect the equipment operation. The following are for your reference:
Installation Requirements
Before you choose the humidistat extractor fan, you should first determine the application scenarios. Then leave the installation area according to the application structure for the extractor fan. If the ventilation duct exceeds 2 meters, you should avoid choosing the wall-mounted extractor fan because of its low static pressure. Different applications generally need unique requirements such as low noise, oil resistance, or cleanliness. You can select the fan with different functions.
Key Parameters
Key parameters of the humidistat extractor fan, such as airflow, efficiency, energy consumption, and noise level, directly affect the performance and service life. You should calculate the airflow that the unit area needs to select a suitable fan. The high-power extractor fan, around 20W, can save half the energy consumption of a 40W fan. Evaluating these indicators before making the decision is helpful for your project.
After-Sales Support
The humidistat extractor fan is typically used in commercial applications, which have strict requirements on stability and reliability. You can choose a famous brand to maintain the quality of the fans. A good product should not only possess stable performance, but also support a 3-5 year warranty service. At the same time, you can choose the supplier that supports repair or replacement service when abnormal failures occur on the fan.
The humidity-sensing exhaust fan has a built-in humidity sensor which can continuously monitors the relative humidity in the air. When the air humidity exceeds a certain level, the humidistat extractor fan automatically starts to ventilate. And when the humidity returns to a normal level, the humidity exhaust fan automatically stops operating. This automatic control mechanism effectively reduces moisture buildup and eliminates the need for manual operation, achieving intelligent humidity management.
In general, humidistat extractor fans will automatically start running when the relative humidity in the air reaches 60-70%. Different models of humidistat extractor fan may have different default humidity ranges for activation. Most humidistat extractor fan support adjusting the humidity activation threshold to suit different environmental requirements. You can adjust the automatically activated humidity level according to your environment to achieve personalized humidity control. The adjustable humidity range of humidistat extractor fans typically covers common indoor humidity levels.
Most humidistat extractor fans support a delayed-off function. After the humidity in the room returns to normal levels, the humidistat extractor fan will run for a short period before stopping. This function helps to thoroughly remove residual moisture from the space, improving humidity control and reducing the risk of condensation.
Ordinary extractor fans rely on manual control and need to be turned off after use, which can lead to energy waste. However, the humidistat extractor fan automatically detects moisture levels, adjusting its operation to turn on or off based on real-time humidity changes.Humidity-sensor products not only keep the space dry but also improve ventilation efficiency and reduce unnecessary operating time.
Humidistat extractor fans are suitable for spaces without windows or with limited ventilation. In enclosed areas often suffer from poor ventilation and tend to accumulate moisture, which humidistat extractor fans effectively address. They are commonly used in enclosed areas such as bathrooms and basements.
Humidistat extractor fans can operate independently without an additional controller. They have a built-in humidity sensor and automatic control module. The extractor fan can be used in conjunction with other ventilation or control systems as needed. Installation methods of the humidistat extractor fan depend on the specific model of the exhaust fan and the application scenario.
Humidistat extractor fans use automatic humidity control, which effectively reduces unnecessary continuous operation. They only activate when the humidity reaches a certain set value, helping to reduce energy consumption. But the actual energy consumption depends on airflow, operating time, and the environment in which the fan is used.
Humidistat extractor fans operate quietly, typically within a range suitable for indoor use. They are well-suited for installation in humid environments such as bathrooms. Some models of humidistat extractor fans feature a low-noise design, ensuring they won’t disturb rest during nighttime use.
Humidistat extractor fans require a stable power supply to support automatic humidity detection. To ensure stable operation and safe use of the humidistat extractor fans, we recommend using a stable power source. The specific wiring method depends on the exhaust fan model and installation environment. To ensure proper installation and safety, it is advisable to hire professionals for the installation.
Humidistat extractor fans are suitable for use in cold regions. They automatically detect and quickly remove moisture from the space, effectively controlling moisture buildup and condensation. This reduces the risk of damage to walls or ceilings caused by excessive humidity.




