21 Dec What is a MERV Rating?
Understand how clean your air truly is!
Minimum Eﬃciency Reporting Values, or MERVs, is the primary rating system for an HVAC ﬁlter’s ability to capture particles between 0.3 and 10 microns (µm). The higher the rating number, means a larger percentage of particles in the air can be treated. MERV ratings go from MERV 1 all the way up to 20.
Here are the diﬀerent levels of MERV ratings and what they address concerning your indoor air: