{
  "$type": "site.standard.document",
  "description": "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…",
  "path": "/patents/1389187",
  "publishedAt": "2026-06-11T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60H1/00585",
    "HYUNDAI MOTOR COMPANY"
  ],
  "textContent": "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.",
  "title": "SYSTEM AND METHOD FOR MONITORING A FILTER STATE OF A HVAC SYSTEM IN A VEHICLE"
}