Abstract: An air purifier (10) is disclosed including an electrically motorized fan (12). The air purifier includes a manual touch pad controller (16) which allows the manual operation of the air purifier and a computer interface which allows the user to control the fan speed through a personal computer (18). The software can allow the user to utilize the computer to automatically turn the air purifier on or off, change the fan speed, indicate the percentage of filter life remaining, and provide a mode of operation which includes a timer mode, wake mode or snooze mode that is in sync with the computer. In an air purifier wake mode, the air purifier is turned “on” whenever the computer is in an awake mode and turned “off” whenever the computer is in a sleep mode. In an air purifier snooze mode, the air purifier is turned “on” whenever the computer is in a sleep mode and turned “off” when the computer is in an awake mode.