I Experience pure cleaning performance with the Electrolux Oxygen3 Air Cleaner featuring PlasmaWave technology. It employs three stages of cleaning for improved indoor air quality. Stage 1: Carbon traps large particles and reduces odors caused by smoke, cooking and chemical vapors. Stage 2: True HEPA filtration traps 99.97% of airborne pollutants and removes them from the air. Stage 3: Molecules and ions interact and emulate the way nature cleans the air with no ozone byproducts. The set and forget feature allows you to plug in your unit and go about your life. Sensors automatically detect odors and adjust the fan accordingly until the odor is eliminated. There are 4 fan speeds to ensure your unit functions at the most efficient level at all times. The filter indicator light comes on when the filter needs to be changed Uses as little energy as a nightlight light bulb (7 watts). It will easily clean a room up to a 16' x 20' living space. This is the best air purifier ever. I live in a home with people who smoke and since i bougt it i hardley notice the smoke.