Blueair

Only Blueair air purifiers use HEPASilent™ technology, delivering maximum filtration with minimum noise. This dual filtration technology pioneered by Blueair combines electrostatic charging of particles and mechanical filtration. Airborne particles are charged before they reach the filter, causing the particles to adhere to the polypropylene fibers in the filter. This allows the use of a less dense filter with less clogging, and permits more air to be pushed through with less noise and less energy than with traditional HEPA filtration alone.

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