As of 2014, Consumer Reports highly rates and recommends the Honeywell HPA300 HEPA air purifier after testing 26 portable air cleaners. Consumer Reports advises buyers to opt for air purifiers that utilize filters and to avoid electrostatic purifiers that can produce ozone, which can worsen allergies and asthma.
Consumer Reports chose the Honeywell HPA300 due to its high level of effectiveness in removing pollen, smoke and dust while being relatively quiet. Amazon.com users give the Honeywell HPA300 a 4.5 out of five star rating. Other top-rated HEPA air purifiers include the Austin Air Bedroom Machine, IQAir HealthPro Plus and the Blueair 503 HEPASilent, according to AchooAllergy.com.