If you don't replace your cabin air filter, the filter will become clogged with dirt and debris, reducing the efficiency of your car's filter and HVAC system. This will cause a decrease in air volume in the passenger compartment, resulting in bad odors and poor air quality. Pollutants such as diesel fumes, burnt oil, allergens, dirt, dust, smoke, smog, pollen, mold spores and exhaust gases can all enter the vehicle's cabin through the heating, ventilation and air conditioning (HVAC) system. Changing a cabin air filter is a difficult do-it-yourself project, so it's usually best to have it repaired by a trained mechanic.
Keeping up with regular and recommended maintenance, such as replacing the cabin air filter, can help extend the life of your vehicle and avoid costly repairs in the future. If you skip replacing your cabin air filter, you could end up spending thousands of dollars on repairs to your entire heating and air conditioning system. You and your family are also exposed to numerous potential respiratory problems due to the lack of a cabin air filter. An old, dirty and clogged filter can prevent efficient airflow and result in lackluster defrost and defrost performance, as well as reduced air conditioning and heating functionality.
It's important to understand the real dangers of not replacing your cabin air filter. With this in mind, make sure to replace it regularly or have it serviced by a trained mechanic to ensure that you and your family are safe from potential respiratory problems.