The Oreck XL Tower Air Purifier uses a permanent electronic filter to remove even the smallest particles from indoor air. The filter never needs to be replaced, you just clean it with water.
The Oreck XL Tower Air Purifier uses Truman Cell technology that was originally developed for the US submarine fleet. Compared to HEPA filters, a Truman Cell removes much smaller particles and never stops working because of clogging. HEPA filters tend to retain moisture, which can breed mold which then escapes back into the room. HEPA filters can also be very expensive to replace.
The Oreck XL Tower Air Purifier is able to clean the air of an 1125 square foot room every hour, and removes airborne allergens such as pollens, tobacco smoke, mold spores, dust and other irritants. It eliminates odor and reduces the level of volatile organic compounds, mainly from solvents and cleaning products, that is usually fairly high in indoor air. According to Oreck, its air purifiers also reduce the levels of harmful ozone, and replace the ozone with pure oxygen that is sent back into the air.

The permanent Truman Cell filter does not need replacements. An indicator light tells you when the filter needs to be cleaned with detergent and water.
The Oreck XL Tower Air Purifier comes with a five-year warranty for manufacturing defects. You also get five free yearly “tune-ups” at the nearest Oreck Store. A tune-up includes an examination of the electronic systems, inspection and deep cleaning of the Truman Cell filter, and overall interior and exterior cleaning.
The Oreck XL Tower Air Purifier is available for a 60-day free trial. As an incentive to take the free trial, customers get a free Oreck ElectrikBroom cordless vacuum cleaner just for testing the air purifier. If you decide to keep the Tower air cleaner, you can pay in twelve monthly installments using your credit card of choice, without interest or finance charges.
As part of a current promotion, customers get $150 off the second unit and every additional unit they buy.