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.

Need a Fast Quote on Commercial Air Curtains?

Choosing the Best Air Curtain

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


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:

Air Curtain Sizes

The most common sizes for a standard air curtain:

  • 36″
  • 40″
  • 48″
  • 60″

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

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.

Frequently asked questions

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.

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.

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.

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Industrial Air Curtain

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Manufacturing Industry

Ventilation Equipment for the Manufacturing Industry Ventilating manufacturing facilities, whether it’s heavy-duty steel rolling mills or lighter-duty manufacturing plants, is a very specific and essential

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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.  

Supplying Air Curtains for the Greater Chicago, Illinois area & Nationwide!

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:

Contact us now for a free quote

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

Providing Industrial Ventilation Equipment to the Following Industries

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