Air Curtains

air curtain air doorAn air curtain, also known as an air door, creates an invisible door that effectively separates ideal indoor and outdoor temperatures. They work by adding a streamlined, fast-moving air stream to prevent air penetrating through the open doorway.

By creating an air partition between two areas, it prevents outdoor air from entering and indoor air from escaping. This helps the HVAC system work more efficiently by protecting the air conditioned facilities. This in turn reduces overall energy costs (scientific study).

The latest technology allows air doors to work systematically and maintain the optimum balance between velocity & volume. Having an optimized balance allows air doors to operate at a more comfortable sound level.

Table of Contents

Blocking Pests & Contaminates


Pests and insects not only make life for clients, customers and staff uncomfortable, but they also have the ability to contaminate products in many industries.

They’re also useful in ensuring that harmful fumes or harsh irritants don’t affect staff.

Looking For Commercial Air Curtains?

Click below to learn more which commercial air curtain is right for you!

Choosing the Best Air Curtain

When choosing the best air curtain for your application there are several important points to consider.

Industrial Air Curtain

Industrial air curtains supply a lot more benefits aside from making a permeable barrier for ease of access. By installing air curtains, you are creating an environment that reduces toxins, bacteria, pollutants, and helps reduce odors.

Industrial air doors are useful in ensuring that harmful fumes or harsh irritants don’t affect staff. Many industrial areas require the use of harsh chemicals or create a lot of dust. By supplying industrial air doors, you can keep these fumes and particles out of the area.

Air curtains of industrial grade also provide a unique benefit for businesses that utilize airlocks for separating departments. By installing a unit, a company can maintain positive pressure within clean rooms, and reduce condensation in large storage areas.

Some of the unique applications and how industrial air curtains have benefited:

Outdoor & Exterior Air Curtains

overdoor air curtainOutdoor air curtains are perfect for areas that allow people to sit indoors, but the windows and doors are kept open. Without an outdoor air curtain, however, there is the issue with nearby traffic emissions, general pollution, and insects.

With an outdoor air curtain you seal off the area when the windows and doors are opened. Exterior air curtains help seal off the air that keeps out unwanted pollutants.

This feature is not only beneficial to grocery stores. Having large doors open helps with the ventilation. Air doors keep a nice invisible partition to separate the two areas. This is all while remaining inviting to customers and allowing employees to move freely, which increases productivity.

Cold storage and Walk-in Freezers

An industrial air curtain designed cold storage can control the vast difference between the internal and external temperatures. Improper calibration can cause frost buildup and unwanted moisture.

Every application is unique, so a trained professional should be able to assess your needs. They need to examine such factors such as what is being stored, temperatures on both sides of the door, and even how often the door opens.


Air curtains come with a variety of features, providing you with exactly the capabilities and requirements to meet your needs.

Some of our air curtain features include:

Sizes Available

Industrial applications not only use different engineering standards than the commercial variations of the air door, but the most obvious is the size. The most common sizes for an industrial air curtain:

  • 72″
  • 96″
  • 120″
  • 144″
  • 168 inches

Of course these are the most common sizes requested. We offer customized air curtains upon request.

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Contact us now for a free quote

We’ll be happy to help explain which model, make and size is best for your application.  

Air Curtain Manufacturer

berner air curtainWe are proud official representatives of air curtain manufacturer Berner Air Curtains, or Berner International Corporation. Based out of New Castle, Pennsylvania, Berner has been globally distributing their products since 1956. They are widely considered the best air curtains in the industry.

Over the last few years R. Williamson & Associates has been recognized as Berner’s Reps of the Year. Berner offers air doors for a variety of applications such as:

Frequently asked questions


Are air curtains effective?

Yes, air curtains are very effective. They create an invisible wall of air between two areas. This helps the HVAC system work less. Thus, reducing energy costs. They prevent bugs, flies, dust and other unwanted contaminants from entering. 

Do air curtains keep flies out?

Yes. Most flies and bugs cannot penetrate the air curtain’s air pressure.

Do air doors save energy?

Yes. By creating an air partition between two areas, it prevents outdoor air from entering and indoor air from escaping. This in turn saves energy and reduces overall costs.

What are air doors used for?

They are used for reducing energy costs and keeping unwanted contaminants out. Especially useful in areas where doors remain open.

Serving the Greater Chicago, Illinois area

Once you have decided on the appropriate air curtains, R. Williamson & Associates can provide you an air curtain price quote. We specialize in ones that fit a variety of business needs. We are also the official representative of Berner International covering Illinois, Wisconsin, & Indiana such as, but not limited to:

Air Door Specialists

We can also send out a trained air door specialist to assess the area and make certain the proper unit is being used for your specific application. We run tests on-site to see how cost effective each model will be to assure maximum efficiency.

Contact us now for a free quote

We’ll be happy to help explain which model and make is best for your application.  

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