How often should a home's air filters be replaced to maintain efficiency?

Replacing a home's air filters every 1-3 months, depending on usage and filter type, is the best practice for maintaining efficiency. Filters trap dust, allergens, and other particles, ensuring clean air circulation and preventing the HVAC system from working harder than necessary. The frequency of replacement can vary based on several factors such as the type of filter used, the presence of pets, allergies, and the overall air quality in the home. Some families may need to replace filters more frequently due to higher levels of contaminants, while others with less dust and fewer occupants might extend that timeline. Regular replacement helps maintain optimal airflow, improves indoor air quality, and increases the lifespan of the HVAC system.

In contrast, rigid timelines such as once a year or every six months may not align with actual usage conditions, potentially leading to reduced efficiency and air quality issues. Monthly replacements without considering conditions could be wasteful, while adjusting based on specific factors ensures a balanced approach to air quality management.