Air doors or fly fans properly selected installed and operated really do work to create a barrier out of air across an opening.
Air doors are controlled by.
The american society of heating refrigerating and air conditioning engineers ashrae defines an air door as follows.
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.
Air doors do more than just control climate.
It reduces penetration of insects and unconditioned air into a conditioned space by forcing an air stream over the entire entrance.
This seal separates different environments while allowing a smooth uninterrupted flow of traffic and unobstructed vision through the opening.
Keeping food pathogens and contaminates away from food is imperative as well.
Mars air curtains reduce energy costs keep environments sanitary through the elimination of flying pests and debris and ensure consistent temperatures using an invisible unobstructing flow of air.
So much so that ashrae standard 90 1 2019 and the international energy conservation code iecc building code allows amca certified air curtains as alternatives to vestibules.
In its simplest application an air curtain is a continuous broad stream of air circulated across a doorway of a conditioned space.
For this reason air curtains are commonly used in commercial spaces such as stores warehouses garages or workshops that demand both climate control and protection from contamination.
They are also an effective way to keep flying insects dust and fumes out of an environment.
Put mars to work at all your openings and realize comfortable results.