Understanding MERV Ratings: Your First Line of Defense
When it comes to maintaining optimal indoor air quality, one of the most crucial components in your HVAC system is often overlooked: the air filter. At ATS Mechanical, we frequently encounter questions about MERV ratings and their significance in both residential and commercial applications.
What is MERV?
MERV (Minimum Efficiency Reporting Value) represents a numerical system ranging from 1 to 20 that measures an air filter’s effectiveness at capturing particles. The higher the MERV rating, the finer the filtration.
Common MERV Ratings and Their Applications:
- MERV 1-4: Basic filtration for window units
- MERV 5-8: Residential and light commercial
- MERV 9-12: Superior residential and commercial
- MERV 13-16: Hospital and general surgery
- MERV 17-20: Clean rooms and pharmaceutical manufacturing
It’s important to note that higher MERV ratings aren’t always better for your system. Using a filter with too high a MERV rating can restrict airflow, forcing your system to work harder and potentially leading to increased energy consumption.
Finding Your Perfect Match
For most residential applications, we recommend filters in the MERV 8-11 range. These provide excellent filtration of common household particles like:
- Pollen
- Dust mites
- Pet dander
- Mold spores
Remember to change your filters regularly – typically every 3-6 months for residential units, and more frequently for commercial applications or homes with pets or allergies.
Contact ATS Mechanical today to ensure your HVAC system is operating with the optimal filtration solution for your specific needs.
