HEPASilent™ technology

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Blueair's HEPASilent™ technology delivers especially high performance and efficiency by combining electrostatic and mechanical filtration technologies. This combination, pioneered by Blueair, delivers high Clean Air Delivery Rate (CADR) with whisper-silent operation and high energy efficiency. In fact, a Blueair air purifier works so quietly that you can not only sleep next to it, you might even have to check to make sure it is switched on. And on its lowest setting, a Blueair air purifier uses less electricity than a lightbulb.

No other air purifiers deliver such high performance on so many parameters, all at the same time.

Two technologies make the difference

With Blueair’s HEPASilent™ technology, airborne particles are charged before they reach the filter. This makes the particles adhere to the polypropylene fibers in the filter more easily due to electrostatic forces, which allows the use of a less dense filter, so more air can be pushed through with less noise and less energy.

The lower filter density allowed by the stickiness of the charged particles also reduces clogging. Filtration remains at peak performance levels longer, with high efficiency and longer lasting performance.

What is true HEPA?

The U.S. and Europe have slightly different HEPA standards. To meet the U.S. standard, an air purifier must capture 99.97% of particles that are 0.3 microns in size. These are considered to be the most difficult to capture, and most air purifiers see a dip in performance for particles around that size.

How do air filters work?

In a Blueair filter, ultra-thin polypropylene fibers of different sizes and layers are interwoven to lock in particles. Once captured, particles are never released back into your home or office environment, even when filters are heavily loaded. The filters capture larger particles like pollen, dust and pet dander as well as smaller particles such as bacteria and viruses. Because polypropylene prevents bacterial growth, our filters capture bacteria and mold from the air but never grow their own.

When the filter needs to be replaced (around every six months), just open the lid, take out the old filter and put the new one in. No screws, hooks or tools are needed. All done in less than a minute. An extra bonus is that Blueair filters don’t require additives or washing. Polypropylene is also an environmentally responsible synthetic, which when properly disposed of, breaks down into carbon dioxide and water.

How does HEPASilent™ technology work?

  • The ultra-quiet fan draws air into the air purifier.
  • Airborne particles receive an electrical charge that causes them to adhere more easily to the polypropylene filters.
  • Charged particles are removed in the filter.
  • Because the charged particles adhere to the fibers in the filter more easily, the filter can be less dense. Lower density means the fan pushes through more air with less pressure, noise and energy consumption. Lower density also reduces clogging.

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