System For and Method of Alerting About Cleaning of Air Purifier

A method of alerting about cleaning of an air purifier, the method comprising:

• an air purifier operating step of operating an air purifier installed inside a vehicle and inputting an operational signal of the air purifier into a control unit;
• a sensor value inputting step of inputting information to alert about a time for cleaning the air purifier into the control unit from sensors installed in the vehicle;
• a purification efficiency computing step of computing, by the control unit, a purification efficiency of the air purifier;
• a purification efficiency comparing step of determining, by the control unit, whether the purification efficiency of the air purifier is equal to or lower than reference efficiency preset to clean the air purifier;
• and
• a cleaning time alerting step of alerting, by the control unit, that it is time to clean the air purifier, when the purification efficiency of the air purifier is equal to or lower than the reference efficiency.