Air filters are the unsung heroes of your HVAC system. They protect your equipment from dust and debris while improving the air quality in your home.
Understanding MERV Ratings
MERV (Minimum Efficiency Reporting Value) ranges from 1 to 20. Most residential HVAC systems require a MERV 8 to MERV 13 filter. Filters with higher MERV ratings capture smaller particles but restrict airflow more, which can strain your system if it isn’t designed for them.
How Often to Change Your Filter
- Standard 1-inch filters: Every 30 to 90 days.
- Pleated or thicker filters: Every 3 to 6 months.
- Homes with pets or allergies: Change more frequently, closer to the 30-day mark.
For more information on indoor air quality, check out our Indoor Air Quality Guide.