Features of Aosun Horizontal Air Curtain
- Blocks dust, fumes, insects, and drafts with a strong air barrier
- Energy-efficient copper motors and cross-flow fans ensure quiet & stable airflow
- Heated or non-heated models with adjustable speeds
- Durable galvanized steel housing and aluminum blades for long service life
- Fits 2–3m installations for warehouses, malls, and more
- Saves up to 65% HVAC energy while keeping indoor climates stable
- Easy installation & smart control options for hassle-free operation
Professional Horizontal Air Curtain Manufacturer in China | Aosun
Horizontal air curtains are designed to create an invisible barrier of air across doorways. They can maintain indoor comfort and block outdoor elements such as dust, insects, fumes, and drafts. Horizontal air curtains are usually installed above entrances. They have a strong horizontal air stream that keeps conditioned indoor air in. Also, they prevent external pollutants from entering. By doing so, they can cut down energy loss and reduce the strain on HVAC systems. They ensure a safer, cleaner, and more comfortable environment in both industrial and commercial spaces.
At Aosun, we manufacture durable and efficient horizontal air curtains built for a wide range of applications. Our models are available in heated and unheated versions. Their speed options range from low-noise single-speed motors to variable multi-speed units. We design them with precision-engineered cross-flow or centrifugal blowers, corrosion-resistant galvanized steel housings, and energy-efficient copper motors. Therefore, each horizontal air curtain can deliver consistent airflow with minimal noise (≤55 dB(A)). Standard sizes range from 90 cm to 150 cm in width. Customizable options are also available for larger doorways.
These air curtains are widely used in office buildings, shopping malls, hospitals, restaurants, warehouses, and cold storage facilities. Whether you need a lightweight horizontal air curtain for retail entrances or a heavy-duty industrial model capable of withstanding high crosswinds, Aosun provides solutions. Our horizontal air curtains come with low maintenance requirements, easy installation, and smart control options such as infrared remotes or WiFi thermostat integration. So, by choosing Aosun, you get a long-lasting and energy-saving solution that enhances indoor comfort while protecting your space from outside disruptions. Contact us for more details.

220 power voltage. Copper motor. We have standard quality to provide you the outmost product.

Multi-angle wind direction blades, adjustable wind direction. Efficiently block insects and eliminates odor.

Easy to open, convenient design which does not need screws. You can use remote or switch to high, medium, low.

Has integrated control system and remotely control for easier use. Economical use and rust proof.

Energy saving and no sound. 900mm to 1800mm in length by choice. Durable Air tube plastic material.

High and low heating settings. Reduced energy cost. Promotes air movement and air exchanges.

Widely used in various industries. Inlet air more smoothly in dual direction. Heat proof, non-inflammable, excellent performance.

Quick temperature raising speed. Prevents from bugs and insects from entering. Air Purification.
What is the Horizontal Air Curtain?
The air curtain is a type of fan-driven device, while horizontal installation is the most common installation method. It is installed horizontally above the door and blows air to the floor. The formed air barrier can create a comfortable environment for your buildings.
How Does a Horizontal Air Curtain Work?

In air-conditioned buildings, the opening doors can easily allow hot and cold air to escape, affecting the efficient operation of the air conditioning system. The horizontal air curtain installed at the door can easily solve this problem.
After the horizontal air curtain is powered on, the air will enter the curtain device through the air intake. The rapid rotation of the impeller causes the air flow to enter the plenum chamber. The air in the plenum chamber is discharged from the evenly distributed nozzles, ultimately forming a strong vertical airflow.
In the ejected air flow, 80% air will go back to the intake side of the horizontal air curtain. The remaining 20% air will flow in the opposite direction. When the horizontal air curtain is working, the indoor air is pushed into the room, and outdoor air is also exhausted. Thus, the horizontal air curtain will form an airtight barrier to separate the outside and inside air.
Advantages of Horizontal Air Curtain

High Efficiency
The fan of the horizontal air curtain is made of high-precision ABS material, creating unevenly spaced crossflow to avoid noisy frequency ranges. This means it can generate powerful wind while operating smoothly.
It offers high air volume and speed. The maximum air volume can reach 3500 m³/h, and the wider the coverage area, the greater the air volume. Air speeds of 6 m/s or higher effectively isolate indoor and outdoor air, while also preventing dust and insects.
Durable
All components of the horizontal air curtain are made of high-performance materials for exceptional durability.
The all-metal housing is constructed of corrosion-resistant galvanized steel. The front cover is coated with an epoxy-polyester paint, providing both corrosion resistance and water resistance. The blades are constructed of anodized aluminum, offering both corrosion resistance and wear resistance.
Low Noise
Compared with AC motors, horizontal air curtains use DC variable frequency high-speed motors that are more energy-efficient and quieter. Through centrifugal turbines and scientific air duct design, the noise of horizontal air curtains can be reduced to below 45dB.
Save Energy and Cost
Horizontal air curtains can form an invisible air wall to prevent indoor cooling or heating from leaking. It can help you reduce the workload on your HVAC system, thereby shortening the running time of heating and cooling.
Best of all, it can help you reduce your heating and cooling costs efficiently. Overall, it can help you save 25% on your electricity bill, which in turn reduces equipment maintenance and replacement costs.
Improve Environmental Comfort
Horizontal air curtains effectively prevent dust, flying insects, and harmful gases from entering a building. Experimental studies have shown that they can reduce air pollutants by up to 70% and flying insects by 80%, thereby improving indoor air quality.
If you own an industrial building, fresh air can protect worker health and improve productivity. For commercial buildings, a comfortable environment can enhance customer satisfaction.
Improved Security
Another significant benefit of horizontal air curtains is improved safety. Using them instead of gates improves visibility, especially during the coldest winter months, by reducing window fogging and preventing ice from forming on the floor.
In addition, installing horizontal air curtains at the entrances of large warehouses can facilitate smoother truck traffic and improve work efficiency.
Applications of Horizontal Air Curtain

Industrial Buildings
Horizontal air curtains play a significant role in the industrial field. Especially the cold storage, warehouse, and production workshop. It can mitigate the impact of the outdoor environment on indoor production processes. Especially in factories and workshops where constant temperature and humidity are crucial, horizontal air curtains can enhance building comfort and improve work efficiency.
Commerical Buildings
If you are running a restaurant, the horizontal air curtain can prevent oil smoke and odor from entering the dining area from the kitchen. If it is the fresh food area of a supermarket, a horizontal air curtain can prevent cold air from escaping and the food from spoiling. In addition, the hotels, shopping malls are also suitable for installing a horizontal air curtain.
Horizontal air curtains can improve air quality within buildings, creating a comfortable shopping and dining environment. They can also reduce the workload of HVAC systems, saving you money on electricity bills.
Medical Buildings
Medical buildings have strict requirements for air cleanliness and noise reduction. At the same time, it can also provide a soft environment for your medical staff and patients. Horizontal air curtains can filter 99.97% of microscopic pollutants and particles as small as 0.3µm, ensuring hygiene and safety for your hospital, nursing home, or clinic. If you are running a medical facility, a horizontal air curtain is a good choice.




