What is a MERV Rating or MERV Filter?
MERV stands for Minimum Efficiency Reporting Value. This is a system used to check the efficiency of an air filter catching particles of varying sizes. MERV ratings are the filter's effectiveness at filtering particles of different sizes.

DuctTesters Inc.

Mailing Address: PO Box 266, Ripon, CA 95366

Main Office: 336 West Main Street, Ripon, CA 95366

P: (209) 579 – 5000 or (866) 950 – 1191