SYSTEM AND METHOD FOR MONITORING A FILTER STATE OF A HVAC SYSTEM IN A VEHICLE

A system for monitoring a filter state of a heating, ventilation, and air conditioning (HVAC) system includes a blower configured to suck and blow air from outside, an outside air temperature sensor to detect a temperature of air from outside sucked by the blower, an evaporator temperature sensor to detect a temperature of an evaporator, and a controller configured to control the blower, analyze and determine a state of a filter based on temperature information detected by the sensors when the outside air sucked by the blower sequentially passes through the filter and around the evaporator, and determine a filter replacement time based on the state of the filter.