 The Oreck Air Purifiers is perhaps one of the most famous air purifiers in the market today.
These machines do not use any HEPA filter but use electrostatic charge to clean the air instead. The byproduct of this system is ozone - a harmful gases for human and animals).
Since there are many ozone-free machines in the market and the fact that it's air filtration is poor, we decided not to recommend Oreck air purifiers.
Oreck XL Professional Air Purifier.
RATING: 
  1 prefilter and electrostatic collection plate.
No HEPA filter.
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AREA : N/A
Oreck AIR4000 Air Purifier
RATING:
No HEPA.
1 year warranty.
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AREA : N/A
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