The standard guideline suggests changing your furnace filters every 90 days. Nonetheless, this is a general rule, and several factors can shorten the lifespan of your furnace filter. If you are a smoker, use vaping products, or share your space with indoor pets, a 60-day replacement interval might be more suitable. In cases where allergies or asthma are a concern in your home, upgrading to a higher MERV-rated filter and changing it every month can help maintain cleaner air quality.

Yes, a dirty air filter will progressively impact your HVAC system as time passes. The duration an air filter remains in a system directly influences its level of contamination and the magnitude of its effects. Several factors come into play when determining the lifespan of an air filter, including the filter type, material, home size, and daily habits. Filters with higher ratings, such as those measured on the FPR (Filter Performance Rating) system developed by Home Depot or the MERV (Minimum Efficiency Reporting Value) rating system, tend to last longer and provide better performance.

Locating the air filter in your HVAC system can vary depending on the unit's design. Begin by inspecting the blower compartment or the return air duct, where air is typically filtered before passing through the unit. Additionally, the HVAC unit itself may have a designated location for the air filter insertion.