Certified Apartment Maintenance Technician (CAMT) Practice Exam

Changing the air filter in a residential HVAC system on a monthly basis is necessary to ensure optimal performance and indoor air quality. Filters can quickly become clogged with dust, allergens, and other particulates, especially in homes with pets, high traffic, or during seasons when pollen is prevalent. When filters become blocked, the HVAC system has to work harder to push air through, which can lead to increased energy consumption, reduced airflow, and potential system damage over time. Monthly replacement helps to maintain clean air within the home and promotes the efficiency of the HVAC system, potentially extending its lifespan. It is important to check the filter monthly, as different conditions and types of filters may require adjustments to this schedule, but a general recommendation for many households is to change them every month for the best results.