The IQAir HealthPro has received more top reviews and awards than any other air purifier. It is the #1 choice for asthma and allergy sufferers. At the heart of this revolutionary system is the exclusive IQAir HyperHEPA filtration technology. A dense network of nano-fibers effectively traps particles of all sizes. That includes viruses, pet dander, dust mites, other allergens and even cigarette smoke.