Electrolux Oxygen Ultra Air Cleaner with HEPA Plasmawave Anti-Odor Pet, White Whisper-quiet air cleaner perfectly suited to home and office use Sensor detects odor and adjusts fan speed to clear the air Costs just pennies a day to operate in auto mode Very low decibel rating Includes 1 HEPA filter, 4 carbon filters, 5-year warranty, and remote control