Air curtains are used in commercial buildings to manage airflow at open doorways without interrupting traffic. Instead of acting as a physical barrier, they rely on controlled air movement to reduce outside air entering the space. Their effectiveness depends on how well they are specified, installed, and matched to the conditions at each opening.
What Air Curtains Do in Commercial Environments
Air curtains offer a unique means of separating the interior of a business from the outdoors, and keeping outside elements from getting inside. A controlled stream of air is directed, typically downward, across the garage or dock opening, creating an air seal. They’re often paired with heavy, clear plastic strips that cover the doorway.
This invisible barrier boosts energy efficiency by preventing the flow of cold and warm air between the spaces separated by the air curtain or air door. The barrier also keeps out insects, dust, odors, and other pollutants – all while not limiting the access of people moving into and out of the space. Air curtains are also useful in interior capacities, like cold storage in a laboratory or controlled temperature and humidity rooms in a botanical garden.
Where Air Curtains Are Most Effective
What Kinds of Businesses Need Commercial Air Curtains?
If you answer ‘yes’ to any of the following questions, an air curtain might be a smart choice for your business:
- Does your restaurant staff struggle to keep out flying insects and dust?
- Does your business have a drive-through window that lets in flying bugs?
- Do you need a barrier between your business and the outdoors, but also an unobstructed view of the parking lot?
- Do you have a room or warehouse space that needs to stay at a certain temperature?
Where Air Curtains Make Sense (and Where They Don’t)
Air curtains are most effective in environments where doors need to stay open for operational reasons. Retail storefronts, shipping and receiving docks, cold storage areas, and high-traffic commercial entrances all benefit from maintaining accessibility without fully exposing the interior to outside air.
Some examples of industrial and commercial operations that can effectively use air curtains to separate environments are:
- Restaurants (sit-down and quick-serve)
- Hospitals
- Grocery stores
- Food processing plants
- Airports and terminals
- Schools and cafeterias
- Aircraft hangars
- Greenhouse facilities
- Wastewater treatment plants (odor control)
- Paint shops
That said, they aren’t a universal solution. Openings exposed to strong crosswinds, oversized doorways without adequate unit sizing, or facilities requiring airtight environmental control may not see the same level of performance. In these cases, a physical barrier or vestibule system may still be necessary.
Understanding where air curtains perform well and where they fall short helps set realistic expectations and leads to better long-term results.
The Advantages of Installing Air Curtains in a Commercial Facility
The unique features of air curtains provide business owners with distinct advantages:
- Increased comfort levels for customers and/or employee
- Higher energy efficiency and lower heating and cooling costs
- Better quality control and cleaner environments
On top of these advantages, installing an air curtain at your commercial facility is inexpensive, so you don’t need to find a mountain of liquid capital to reap the benefits.
Commercial Air Curtain Installation
Sizing and Placement Considerations
If you’re considering having an air curtain installed in one of the doorways at your commercial or industrial building, a specialist in commercial door installation will first come to examine the doorway(s) you’re looking to add air curtains to. They’ll analyze things like:
- What type of opening is it?
- What are the dimensions of the opening?
- What’s the doorway for?
- What are the temperature, humidity, and pressure differences between the two spaces?
- Will you need any temperature-altering features, like heat for the air curtain unit?
Not all air curtains are the same; they come in different sizes with different features and varying power levels. All the above variables will determine what kind of air curtain the commercial door installer recommends for your doorway.
Common Installation Oversights
Air curtains are sometimes treated as plug-and-play equipment, but installation quality has a direct impact on performance. Common issues include:
- Units mounted too far above the opening
- Inadequate airflow for the size of the door
- Misalignment with the doorway
- Failure to account for exterior wind conditions
These oversights can significantly reduce the effectiveness of air curtains, even when the equipment itself is properly specified.
Air Curtains vs Vestibules and Physical Doors
Air curtains are often compared to vestibules or secondary door systems, but they serve a different purpose. A vestibule creates a physical buffer zone, while an air curtain creates a directional airflow barrier. The advantage of an air curtain is that it allows continuous access without requiring doors to open and close, but it doesn’t create a sealed environment.
In many commercial settings, the choice comes down to workflow. If uninterrupted movement is a priority, air curtains offer a practical alternative. If environmental separation is critical, a physical enclosure may still be the better option.
Choosing the Right Air Curtain for Your Facility
At SACS DOOR & GATE, we’re happy to meet with you and discuss which type of air curtain is right for your business. Our experienced technicians are trained to pay attention to the details, ensuring your air curtain works to its maximum level of efficiency after it’s installed. Concerned about maintenance down the road? We’re here to guide you. We are Sacramento’s go-to source for air curtains, commercial overhead doors, storefront doors and windows, specialized commercial/industrial doors, and more.