Air Curtain

Entrance door Air curtain | Residential & Commercial Air Curtain | Industrial Air Curtain | Air Curtain for Kitchen/Restaurants

Aircon Air curtain: - 

As per the scientific definition, an air curtain is a fan-powered device that creates an invisible air barrier over the doorway to separate efficiently two different environments, without limiting the access of the people or vehicles. The Air curtain was an invention that reduced heating and cooling costs by up to 80% while protecting the internal climate with energy-saving air screens. Also, It keeps the atmosphere clean from pests and insects, dust, airborne, pollution, smells, odors, and stops droughts and cold or hot air entrances.

Aircon Air Curtain

Functioning of Air curtain: - 

The functioning of an air curtain is based on a high-velocity jet of air that covers all entrances. In air curtain air jets need to be placed on the top, which divides warm and cold areas into two thermal zones. So the air curtain keeps the internal environment at a comfortable warm temperature and avoids cold air penetration from outside. Effective positioning of the air curtain saves up to 80% of the energy and improves effectiveness.

Air curtain imageAir curtain image

The technology of Air Curtain: -

As per the law of physics, air tends to flow for equalizing temperature and pressure difference between two sides. To control this air transfer high velocity of air is used as an air curtain on exchange points. Basically, air transfer on doorways happens due to these 3 factors:

Temperature difference: is the natural convection effect that creates an air transfer between two areas with temperature difference. 

Pressure difference: Air has a movement tendency in pressure difference area. So it is recommended to equilibrate the pressure difference as much as possible because it affects the air curtain performance. But in some installations like clean zones, a little pressure difference helps to prevent the particles from entering from outside.

Wind, stack effect, and draughts: One can modify air-jet strength and the outlet discharge angle, which helps in working against forced-air movements like wind or draughts. But if the velocity of the incoming air is excessive the air curtain will become less efficient.

Benefits of Air Curtains: - 

Air curtain is a classy example of technology that has replaced costly and ineffective products. We classify air curtains advantages in 4 groups:

Profitability enhancement -

- Sales increase due to the “open door effect”. It is known that when doors are open, people affluence increases substantially due to visibility and accessibility.

- Reduce discomfort due to sensations of draughts

- Increases available usable space on entrances

- Increases customers and staff comfort

Hygiene enhancement - 

- Helps maintain an adequate environment

- Pest and insect control

- Barrier against airborne dust, pollution, fumes, and bad odors

Reduction in energy consumption -

- Reduces the energy losses from the conditioned space and in turn load on the central plant (heating/cooling)

Enhancement in safety - 

- In cold rooms reduces misting, dry out the doorway, and prevents ice from forming on floors

- Easy evacuation through the exit doorway in case of fire or emergency

- Act as a barrier against fire smoke (special application)

Air curtain image Air curtain image

In conclusion, on open doorways, it is highly recommended to use an air curtain because of the many benefits. One should only care about the proper choice as per requirement. Cosyst Devices' deep knowledge in this technology will always help you in getting the best product as per requirement.

Common places where air curtains are installed:





Train stations










Stores (general)


Chain clothes


Chain shoes


Chain supermarkets


Chain food


Chain cars






Shopping centers






Theme parks, sports



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  • What are air curtains/air doors?

    In the summer, air curtains can keep hot air outside and warm air in during the winter.

  • How does an air curtain work?

    Air curtains are used to seal out outdoor air. These doors consist of an enclosed blower that pulls a curtain of low-pressure air across a door opening.

  • What is the purpose of Air Doors?

    It provides an air-tight seal to keep insects, dust, and other particulates from entering the building. And with the inside/outside barrier, less heat will escape in winter and less air conditioning will be needed in summer.

  • How does an air curtain benefit you?

    The benefits are far and wide. Not only can these units lower your energy bill and save you money, but they also have quite the aesthetic appeal. It blocks dust, noise, pollutants and also acts as a barrier that prevents pests from entering.

  • By installing Air curtains, how much energy can be saved?

    Positioning the air curtain strategically has been found to save 80% of the energy used.

  • What are some applications for air curtains?

    Air curtains are commonly used in store entrances, public buildings and other places where the main door requires frequent opening.

  • What is the best place to install Air curtains?

    Air curtains are installed or mounted above or alongside the entrance door or an opening.

  • Can Air curtains operate for long hours?

    Yes, Aircon Air Curtains can be used for nine to twelve hours each day without a break.

  • After installing an air curtain can the door be left open?

    Of course, by using our air curtains you can always keep the door open.

  • Is an Aircurtain installed inside or outside the door?

    Normally, air curtains function at the same level of efficiency whether they are on the inside or outside of the door but they are typically mounted inside.

  • How high up should an air curtain be mounted on a doorway?

    Install air curtains above the doorway, but not any higher than a foot up the door opening.

  • In case there is no space to mount an air curtain above the doorway, is it possible to mount it vertically on the side of the door?

    In case it cannot be installed on the top of the doorway, air curtains can be mounted on both ends of the door.

  • Do air curtains make a lot of noise?

    Not all air curtains are the same; some are noisy, while others are quite silent. The sound varies based on the model and make of the curtain. Below 75 dB is a desirable sound level for an air curtain.

  • Should the width of the air curtain be more or less than the width of the door?

    The length of the air curtain should be roughly the same width as the door it's installed to protect. However, adjustments can be made by installing PVC strips or similar to cover extra spaces.

  • Would air curtains be effective in areas of extreme heat such as on industrial ovens or industrial conveyors?

    Yes, air curtains can be used to trap heat when operating an industrial oven or conveyor belt.

  • Do air curtains have a purification and disinfection system?

    The Air Curtains we offer have a Disinfection and Purification System that helps in killing viruses & purifying the air, neutralizing volatile organic compounds (VOC's) and neutralizing other pollutants such as mold.

  • What is Aircon Air curtain blower material?

    We provide CRCA (powder coated) /Stainless Steel.

  • Do you provide AMC?

    Yes, we do.

  • What is the Warranty period?

    Aircon Air Curtains come with a 1 year warranty.

  • What sizes do Air curtains come in?

    We offer 6 sizes; 3 feet, 1 meter, 4 feet, 5 feet, 6 feet and 2 meter.

  • What is the cost of an Air Curtain?

    The cost of an air curtain varies, depending on the size and model you select.

  • How to select a good Air Curtain?

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