Review: IQAir HealthPro Plus Air Purifier + AirVisual Pro Air Quality Monitor The IQAir HealthPro Plus is an air purifier with 1,125 sq. feet of coverage and triple filtration — including a HyperHEPA filter that is effective against Covid-19. Hospital-grade protection from allergens, smoke, and viruses for your home from a Swiss company with nearly 6 decades of experience.