Complete Comfort Air Conditioning and Heating wants to educate you on the different ratings of filters by type and brand. We mostly use MERV filter ratings in the products we select. Minimum Efficiency Reporting Value (MERV) is a standard that rates the overall effectiveness of air filters. The higher the MERV rating equates to finer filtration, meaning fewer dust particles and other airborne contaminants can pass through the filter. MERV ratings range from 1-20. MERV rating of 11 or higher is recommended by Complete Comfort. MPR (Micro-Particle Performance Rating): MPR Rating is a rating system developed by 3M. It rates the manufacturer’s filters and their ability to capture airborne particles smaller than 1 micron. FPR (Filter Performance Rating): FPR Rating is a rating system developed by The Home Depot for brands sold through their stores, including Honeywell. It utilizes a color code and number scale (4 to 10) that closely resembles the MERV rating. Filters that can be seen through are not good at all and if you can see through the media, think of how much debris and dust can pass through. Pleated filters with at least a MERV 7 is recommended. Filters and whole-home air cleaners are available up to 5″ of thickness and also have carbon options available. We at Complete Comfort A/C offer our customers filters in custom sizing and cases that will supply you for 12 months. Please call us today at (561) 531-5659.