Skip to main content
loading site..
American Air Filter International
American Air Filter International




hero banner


Starts AT AAF

If you wanted to change the world, where would you begin?

We’ve been answering that question countless ways since our company was born.

At AAF, clean-air breakthroughs begin with research and development in our $5 million Clean AIR Center. Or start with our people looking at familiar problems in different ways. Whether it’s a practical solution to a simple problem — or an idea that put us on the moon — AAF has always been where world-changing ideas for clean indoor air begin.


We imagined better access to clean indoor air – and then we created it. Now, imagine how these innovations can improve your world.


Designed to improve cleanroom uptime, this HEPA filter uses the industry’s first and only eFRM media compatible with PAO for HVAC validation.

smart watch

Wearable Monitors

Small as a thumb, our wearable IAQ monitor provides powerful feedback by continually measuring particulates in indoor air.

TCO Diagnostic

Removing guesswork, our analysis software compares costs and performance of up to four options to help identify the most effective filtration for your facility and needs.

100+ years of advancements in indoor air.

Our company started with a simple mesh filter built by hand in 1921. In the more than 100 years since, we’ve built a reputation on our innovative firsts in filtration.  


Reed Air Filter

Entrepreneur Bill Reed developed a filter to remove dust from the air of his automotive paint shop in Louisville, Kentucky. His company established the foundation of our solutions for indoor air filtration.

First Type D RotoClone
AAF introduced this revolutionary breakthrough in commercial dust control.
Fluorocarbon Synthesis
Daikin became the first in Japan to successfully produce fluorocarbon gas, an early step toward becoming the world’s first company to manufacturer both air conditioning equipment and refrigerant.
First high-efficiency box filter
AAF introduced the first high-efficiency, box-type filter. This decade began an era of innovation by AAF in the areas of air filtration and dust control.
First automatic, self-renewable media filter
AAF invented the Roll-O-Mat®, the first automatic, self-renewable media filter. This system is still widely used to this day.
First bag filter
AAF developed the DriPak® bag filter for protecting air quality and comfort in commercial and industrial applications. Today it is one of the most common types of filtration in use.
First high-efficiency box filter
AAF introduced VariCel®, the first modern, high-efficiency box-style filter.
First separator-less HEPA filter
This innovative filter was introduced after Flanders became the first filtration company to also make its own HEPA media.
First ULPA filter
Flanders introduced the first ULPA (Ultra-Low Particulate Air) filter. It removes even smaller particles than HEPA filters, up to 99.999 percent of particles down to .12 micron.
First high-efficiency mini-pleat filter
High-efficiency filtration met space-saving design when AAF designed the VariCel® II, the first high-efficiency, mini-pleat 4-inch-deep filter. The slim profile led to lower costs for shipping, storage, handling and disposal.
Baghouse innovation
AAF introduced the first modular, expandable baghouse. This design builds on AAF’s innovative bag filter of the 1960s.
First self-supported pleated filter
The new decade brought the introduction of PerfectPleat®, the world’s first self-supported pleated filter. A distinctive pleated pattern promotes even airflow and maximizes its capacity to hold dust.
New software and technology
AAF adds IAQ monitoring software and technology capabilities. Over four years, AAF introduced TCO Diagnostic®, Sensor 360® and VisionAir™ Clean.


Many organizations around the world have established trusted standards, guidelines and recommendations for Indoor Air Quality and Indoor Environmental Quality. American Air Filter follows the guidance of these respected entities to provide assurance to our customers.