Moving Air Safely for More Than 65 Years

We Can Make
Your School Safer
and More Secure

Our Medical Grade HEPA Filtration Radically Reduces the Spread of Infection

This chart shows just how effective medical grade HEPA filtration can be. As Air Changes Per Hour (ACH) increase, the probability of infection spread plummets. And when you combine masks with medical grade HEPA filtration, the risks can be as much as 3000 times less than when only N95 masks are used.  

Medical grade HEPA filtration is extremely effective at removing particles the human eye can’t see.  In fact, tests show medical grade HEPA filters are effective down to .01 microns. Why is that so important? Because pathogens like COVID-19 can float in the air for hours after an infected person occupies the space. Scrubbing the air with medical grade HEPA filtration is a highly effective way to reduce risks.

But it doesn’t stop there. HEPA filtration is also extremely effective at ridding the indoor air of other viral and bacterial contaminants, including colds and flus, as well as asthma inducing particulates like dust, mold and pollen.

Perfectly Sized For Classrooms

Schools are learning that their central HVAC systems are not designed–nor can they be effectively upgraded–to prevent the spread of infectious disease. The filters these systems use are not capable of efficiently removing very small viral aerosols like COVID-19. 

Central systems are also not designed to deliver anywhere near the number of Air Changes Per Hour (ACH) required to mitigate viral spread. Our targeted 8-10 ACH for classroom exceeds CDC, ASHRAE, and state health organizations guidelines as some areas in a room will receive less air flow in real life circumstances.

A single HEPA Filter Tower can deliver 10 ACH to the average sized classroom, purging the air of COVID-19, H1N1, and a host of other pathogens in just 6 minutes! All it takes is a simple push of a button to activate the machine timer. The integral medical grade HEPA filter does the rest, and the Tower will turn itself off at the end of the school day.

How You Circulate the Air Matters

The HEPA Filter Tower operates within the occupied space, swiftly and continuously treating air throughout the day.

The unit draws air in close to the floor, filtering it and then dispersing it out through the top. This air circulation method drives unwanted airborne particles to the ground, where they are quickly drawn back into the bottom of the unit as the air is filtered again and again.

Because the HEPA Filter Tower is taller than other in-room filtration equipment, it is more efficient at dispersing clean air throughout the entire space.

These computer-generated simulations illustrate the advantage of a taller filtration unit.

Notice the evenly distributed airflow of the Duravent HEPA Filter Tower, compared to the airflow distribution of the shorter unit. Even at the same air output (CFM), the low dispersal height of the latter unit short circuits the air flow and leaves significant areas of unfiltered air in the room.

Overhead view@ 300 CFM created using CFD simulation

High Volume Filtration – Without the Noise

Our medical grade HEPA Filter Towers operate at a best-in-class low noise level, cleaning the air quietly, and allowing teachers and students to focus on what’s important.

At a whopping 940 CFM, the Tower can clean all the air in an average size classroom in just 6 minutes, with very little noise. 

Central HVAC systems can’t come close to delivering this level of air purification. The HEPA Filter Tower lets you meet (and exceed) the highest ACH recommendations for schools – including those from the CDC! 

Many classrooms can achieve 6 ACH with the machine running no louder than a whisper! Our experts will work with you to select and place equipment for optimal air movement with the least amount of noise. 

Better Air From This Day Forward

Covid-19 may have changed the way we think about the air we breathe, but the need for better indoor air quality is not new. Nor will it go away when this crisis passes.

Fortunately, a simple and effective solution is here.

The HEPA Filter Tower is not only a giant step toward normalcy, but long term safety and security for students, teachers and our communities. From the moment you plug it in, you can expect significantly enhanced protection against a never ending onslaught of colds, flus, and upper respiratory illnesses.

Our extra-large medical grade HEPA filter is the key the Tower’s superior performance and low maintenance.  At 2 to 3 times the size of filters used in other equipment, the Tower filter:

  • Efficiently removes particles as small as .01 microns – including viruses, bacteria, allergens and even smoke particulate
  • Lasts longer – providing years (not months) of service before it needs replacing
  • Provides high volume filtration with very low noise

So plug in, turn on, and enjoy some fresh air!

Captures COVID, Cold, Flu, Pollen, Dust, Smoke Particulate, and other allergens down to .01 microns.