What are some good Oreck air purifiers?

There are several good Oreck brand air purifiers. The Oreck AirInstinct 100 air purifier includes an anti-odor HEPA filter and it monitors the dust, pollen, and smoke in the air that goes through its filter. Oreck also offers the Oreck XL Professional, which is a desktop air purifier that converts ozone to oxygen and removes harmful gasses from the air.