Understanding MERV Ratings: Your Guide to Better Indoor Air Quality


The Hidden Impact of Air Filter Ratings

When it comes to maintaining your home’s air quality, understanding MERV ratings is crucial for both comfort and health. At Green Heating & Air, we often encounter customers who are unsure about which air filters best suit their HVAC systems.

MERV (Minimum Efficiency Reporting Value) ratings range from 1 to 20, with higher numbers indicating better filtration. Here’s what you need to know:

MERV Rating Categories:

  • MERV 1-4: Basic filtration for large particles
  • MERV 5-8: Better residential filtration
  • MERV 9-12: Superior residential/basic commercial
  • MERV 13-16: Hospital/healthcare grade
  • MERV 17-20: Clean room/surgical grade

Most residential systems work best with filters rated MERV 8-13. Higher ratings can restrict airflow and potentially strain your system, leading to increased energy consumption and possible mechanical issues.

Choosing the Right Filter

Consider these factors when selecting your filter:
– System compatibility
– Local air quality
– Family health needs
– Energy efficiency goals

Remember that regular maintenance, including filter changes every 3-6 months, is essential for optimal performance. For residents in Mississauga, Toronto, Richmond Hill, Brampton, and Oakville, our technicians can help determine the ideal MERV rating for your specific system.

Contact Green Heating & Air today to ensure your HVAC system is operating at peak efficiency with the right filtration solution for your home.