Features of Aosun Ambient Air Curtain
- Form a solid unheated air barrier, effectively reducing the infiltration of outdoor air while not increasing additional heating load.
- Adopt an efficient airflow design to ensure stable and uniform airflow in the door opening area.
- Offer multiple airflow speed settings to adapt to different entrance sizes and traffic volumes.
- Designed specifically for low-noise operation, suitable for retail stores, offices, restaurants and other commercial spaces with people.
- Support door control switches, remote controllers and external controllers options to achieve more flexible and convenient operation.
- Provide multiple lengths and voltage configurations to meet different door widths and regional electrical requirements.
Aosun | Professional Ambient Air Curtain Manufacturer in China
Aosun specializes in the design and manufacture of environmental air curtains, providing reliable non-heated air barrier solutions for commercial entrances, retail stores, office buildings, restaurants, and other places controlled by HVAC systems. Unlike heated air curtains, environmental air curtains maintain indoor environmental stability by forming a continuous airflow barrier, but do not have heating modules. With stable air flow performance, flexible configuration methods and practical operation options, Aosun environmental air curtains help reduce unnecessary air exchange and create comfortable and energy-efficient commercial Spaces.
As an experienced ventilation equipment manufacturer in China, Aosun provides distributors, wholesalers and OEM brands with ambient air curtain solutions to meet the needs of different markets. From product design and manufacturing to quality inspection, Aosun is committed to providing high-quality products, reliable supply capabilities and flexible cooperation solutions to global partners.


It designed for commercial entrances to create an unheated airflow barrier.

It creates a continuous airflow barrier across doorways to reduce air exchange.
What Makes an Ambient Air Curtain Different?
The ambient air curtain utilizes unheated indoor air to form a continuous airflow barrier at the open doorway. Unlike the heated air curtain, it does not add heat to the discharged air flow, making it suitable for entrance areas where environmental isolation, maintaining regulated air, and maintaining continuous doorway access are the primary requirements.

Why Choose an Ambient Air Curtain?
Although heated air curtains provide auxiliary heating, the ambient air curtain solution offers more cost-effective performance in most controlled commercial buildings, and has unique advantages over heated solutions:
Reducing System Complexity
As a unheated air curtain, it does not require electric heating elements, hot water coils, or associated piping components. A simple structure composed only of fans reduces the number of faulty components and ensures more stable operation. It also simplifies the on-site layout, design, and system integration of the equipment.
Reducing Power Load
All power consumption is dedicated to fan operation, without additional energy consumption for heating. Compared to heated air curtain equipment, non-heated air curtains can significantly reduce electricity consumption, thereby reducing monthly operating costs. ambient air curtains are an economical choice.
Suitable for Buildings with Air Conditioning
Most modern commercial spaces are equipped with complete HVAC systems to maintain constant indoor temperatures. In these environments, only air separation is needed for lobby ventilation, without the need for additional heating. Commercial ambient air curtains are perfectly applicable here, effectively avoiding unnecessary heating and reducing the load on the main air conditioning system for compensation.
Lower Maintenance Requirements
There are no heating cores, valves, or heat exchanger components, so there is no risk of heating burnout, pipe leakage, or water scale accumulation. Daily maintenance only includes fan cleaning and equipment inspection, saving time and maintenance costs.
More Suitable for Mild or Warm Climates
In temperate and warm regions where there is no need for incoming air heating throughout the year, ambient air doors can perfectly meet isolation requirements without the need for ineffective heating functions, and have higher practical value.

In which Scenarios are Ambient Air Curtains Most Applicable?
ambient air curtains are specifically designed for indoor spaces and have complete temperature control capabilities. The focus is on air isolation and maintaining the regulated air, rather than heating. They are particularly suitable for the following high-frequency commercial scenarios:
Retail Entrances
Retail stores with frequent customer entry and exit require a stable air conditioning system. ambient air curtains can effectively prevent the intrusion of cold and hot air from the outside, maintain stable indoor temperatures, reduce the frequent start-ups and stops of HVAC systems, and ensure that the entrance passage is fully open and unobstructed, facilitating customer passage.
Supermarket
The supermarket has a long operating hours and a dense flow of people. The main entrance is always open throughout the year. Combined with the central HVAC system, the unheated air curtain can prevent the exchange of cooling air indoors and outdoor environment air, thereby maintaining the comfort level inside the store and helping reduce unnecessary air exchange.
Restaurant and Coffee Shop
Dining venues have high requirements for stable indoor temperature and air cleanliness. ambient air curtains can effectively block outdoor dust, humid air, smoke, and untreated airflow, creating a comfortable dining environment. Since they do not generate heat, they do not disrupt the indoor thermal environment or increase the cooling demand.
Office Buildings and Commercial Buildings
Office buildings rely on central air conditioning for temperature regulation throughout the year. Commercial air curtains can form a continuous airtight barrier at the main entrance, reducing the loss of air treated by the air conditioning and lowering the overall energy consumption of the building, helping to achieve the energy efficiency goals of green buildings.
Shopping Centers
Multiple large entrances and extremely high traffic volumes place great pressure on the HVAC system of the shopping center. ambient air curtain solutions are specifically designed for long-term continuous operation, locking the treated indoor air inside and effectively inhibiting air infiltration, thereby reducing the cooling energy consumption of the entire building.
What Determines Ambient Air Curtain Performance?
The performance of a commercial ambient air curtain depends on four core practical parameters. These parameters are the primary considerations during product selection and on-site debugging to ensure a robust and seamless airtight barrier is formed under different door opening sizes and building conditions:
Installation Height
The door height directly affects the distance the airflow needs to travel before reaching the ground. The higher the installation height, the slower the exhaust air speed, and it is more susceptible to the surrounding air flow. Therefore, the ambient air curtain needs to have sufficient wind speed and range based on the actual installation height.
Door Width
The effective outlet width of the unheated air curtain must completely cover the entire door opening. A matching width can eliminate blind areas along the door frame and ensure the complete and consistent separation of internal and external air. For larger door openings, you need to usr multiple units to be installed side by side to achieve continuous coverage.
Airflow Speed and Range
The airflow needs to maintain sufficient speed and range throughout the door opening. Stable airflow is more effective than simply increasing air volume. Excessive speed may generate noise and discomfort, while insufficient speed may cause external air to seep into the air curtain. Sufficient wind speed can enable the wind barrier to effectively resist natural convection and mild lateral airflow.
Pressure and Wind Conditions
Negative indoor pressure, strong wind, or frequent air flow around the entrance will weaken the effect of the air barrier. To correctly select the model, it is necessary to assess the on-site wind pressure and the indoor-outdoor pressure difference. In such cases, you need to use an ambient air curtain with high velocity and adjust the installation position, or adopt a more powerful fan configuration.
Yes. When the door is opened, the air curtain is activated. When the door is closed, the air curtain stops or delays closing. Ambient air curtain is very suitable for shopping malls, offices, hotels, commercial entrances and other frequent opening and closing scenarios. Note that you need to match the size according to the width of the door, the height of the installation, and the way the door opens.
Whether you need dedicated electrical circuit depends on the equipment power, voltage, and the local electrical code. Most commercial projects require a professional electrician to confirm the power supply requirements. For large entrances or multiple units installed in combination, you need to plan the power configuration in advance.
The main function of the ambient air curtain is to create an air barrier, rather than filtering the air.Air curtains should not be considered as air purification equipment. Therefore, most basic models do not come with a filtration system. If there are dust, cooking fumes or pollutants in the installation environment, you will need to choose an additional air treatment solution.
The frequency of cleaning depends on the usage environment, the number of visitors, air quality and working hours. It can be cleaned and maintained every three to six months under normal use. Routine maintenance includes cleaning the air intake, inspecting the fan blades, checking the operating status of the motor and confirming the air outlet is not blocked.
Yes, but it is necessary to select the appropriate product configuration according to the environment. In humid or coastal environment, corrosion resistance, housing material, electrical protection and installation location of air curtain are mainly concerned.
Both Ambient air curtain and vestibule can reduce air exchange at the door, but they work in different ways. Air curtain does not occupy additional space, which is suitable for high-frequency passage entrances and is more flexible to install. The vestibule requires building space and reduces air exchange through double doors. Whether it can be replaced depends on architectural design, climate and the flow of people.
It can be used, but strong wind conditions will affect the effectiveness of the air barrier. You need to choose an air curtain with higher air volume and a model with more stable air volume. In special circumstances, it is necessary to adjust the installation position or add lateral protection.
Ambient air curtain usually adopts different types of motors according to performance requirements. Common types include AC motors and EC motors. AC motors have reliable performance and low initial costs, making them suitable for regular applications.EC motors have higher energy efficiency, adjustable speed, lower noise and longer service life, which are suitable for energy-saving commercial buildings.
Yes. Aosun supports private-label / OEM & ODM ambient air curtain projects. Custom options include custom branding/logo, housing colour, casing material, doorway size, voltage and control panel configuration. We also adapt packaging and user manuals to match your brand identity.




