We got Oreck’s XL Pro Air Purifier in a while back, and it’s been put through its paces in a big, open plan area, for which it’s marketed. Pictured above is a close look at the collector ...

I have had the Oreck XL professional air purifier table-top model for 7 years. I have not had any problems with it. The only thing was when I first bought ...

The Sharper Image Hybrid GP Germicidal Air Purifier is $500 and the Oreck tower, the XL Professional Air Purifier, is $700. But Consumer Reports says neither did a good job of cleaning the air.

The Sharper Image Hybrid GP Germicidal Air Purifier is $500 and the Oreck tower, the XL Professional Air Purifier, is $700. Neither rated good at cleaning the air.

The Sharper Image Hybrid GP Germicidal Air Purifier is $500 and the Oreck Tower, the XL professional air purifier, is $700. But neither rated good at cleaning the air.