When should a homeowner consider replacing filters in their HVAC system?

Replacing filters in an HVAC system every season is an effective guideline for maintaining air quality and system efficiency. Seasonally replacing filters helps to account for changes in usage patterns, airborne allergens, and dust levels that fluctuate throughout the year.

During the heating and cooling seasons, the system operates more frequently and tends to collect a significant amount of dust, pollen, and other particulates. By changing the filters each season, homeowners ensure that the HVAC system can operate efficiently, reducing strain on the system and ultimately prolonging its lifespan.

Simply changing the filters every month might be excessive for some homeowners, especially if the system is not used heavily or if air quality is good in their area. On the other hand, waiting until visible dust builds up may lead to reduced air quality or stress on the HVAC system. Additionally, changing filters only once a year may not provide adequate protection, especially during seasons of high usage or increased particulate matter in the air. Seasonal changes strike a good balance between maintaining efficiency and ensuring air quality.