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An Air Curtain, also known as an air door, is a machine that blows a controlled stream of air across an opening to the other side to create an air seal. This seal separates different environments while allowing a smooth, uninterrupted flow of traffic and unobstructed vision through the opening. Because they help to contain heated or conditioned air, they provide sizable energy savings and increased personal comfort when applied in industrial or commercial settings. They also help to stop the infiltration of pollutants and flying insects.

How Does an Air Curtain Work?

Once it is powered on, air is brought into the unit through the intake

The air then enters the fan housing and is accelerated by the fan.

This fast-moving air goes into a plenum, which allows for an even distribution of air along the full length of the discharge nozzle.

Airfoil-shaped vanes in the nozzle create a uniform air stream with minimal turbulence.

The air discharged through the nozzle creates a jet stream to the floor. Approximately 80% of the air returns to the intake side of the Air Curtain Door, and 20% goes in the opposite direction.

Why Use an Air Curtain?

Energy savings through control of air transfer

Energy savings due to shorter run times of air handler or compressor

Safe environment support by increasing ventilation and de-stratifying the air

Maintain employee/customer comfort

Reduce flying insect infiltration

Unhindered traffic flow & unobstructed visibility across the threshold

Increase productivity due to stable temperatures

Maintain usable space around the door

Elimination of ice and fog in cold storage areas

Do Air Curtains Cool a Room?

While Air Curtain Blowers are not the same as air conditioners, they are highly effective at maintaining the interior temperature, keeping cool air inside and warm air outside (or vice versa) when the door is open. They are sometimes referred to as “invisible doors” as they create an invisible barrier between inside and outside environments. Because they help to contain heated or conditioned air, they provide sizable energy savings and increased personal comfort when applied in industrial or commercial settings.