If you’re looking for the right air filter, understanding MERV can be to your advantage. MERV is a rating given to air filters based on their minimum efficiency reporting value; in other words, it's a rating of their capacity to efficiently remove airborne particulates down to 0.3 microns. This value can range from 1 to 20, with higher MERV ratings indicating a higher-efficiency air filter.With regards to shopping for air filters, MERV can be broken down as follows:
For use in residential settings, air filters with a MERV between 1 and 4 are often lower-quality, disposable filters.
A MERV between 5 and 8 would represent a better variety of residential air filter.
A MERV between 9 and 12 might be found in superior residential settings or commercial buildings.
In hospital settings and superior commercial settings, air filters will likely carry a MERV between 13 and 16.
Capable of removing 99.97 percent of airborne particulates down to 0.3 microns, True HEPA filters carry a MERV between 17 and 20 and are used in applications such as laboratory clean rooms and pharmaceutical manufacturing.
What's surprising is that there is really no mandate set on how a MERV rating is performed. Therefore, it's highly likely that MERV ratings on a filter may be tested at levels that don't work with the amount of air your comfort system produces. In other words, a higher MERV rating could be a marketing ploy, and actually damage your system or it's performance.When choosing an air filter, you have to take the specifics of your system into account. Filters may not fit your system, or in some cases may be entirely too powerful for practical use in your home. With those things in mind, MERV should be used as one reference point for filter comparison, but not as the sole reason for your filter decision.That's why Air Assurance has tested all of the filters we offer to our customers with the air flo commonly used by the comfort systems we service and install. To ensure that the air filters you choose are the most efficient and system-appropriate available today, let our trained technicians guide you through the process. For expert consultation, contact Air Assurance of Broken Arrow, Oklahoma, today!Our goal is to help educate our customers about energy and home comfort issues (specific to HVAC systems). For more information, click here. Air Assurance services Tulsa, Broken Arrow and the surrounding areas. To get started, check out our website or see our current promotions.