When it comes to air quality, the right air filter can make a world of difference. But how do you know which filter is the best fit for your home? The answer lies in the Minimum Efficiency Reporting Value (MERV) rating system. The MERV rating is a measure of a filter's ability to capture particles of different sizes. Filters with a MERV rating of 8 to 13 are usually high-end filters for domestic use or high-quality commercial filters.
These filters are often the ideal choice for homes and many businesses. In general, filters with a MERV rating of 16 or lower are considered suitable for air conditioning systems in residential, commercial and general hospital settings. The lowest MERV rating (1-), will still capture pollen, dust mites, cockroach debris, sanding dust, spray paint dust, textile fibers and carpet fibers. Residential systems will not accept filters with a MERV index greater than 12, unless it has been previously adapted to use a higher-efficiency filter.
The MERV ratings range from 1 to 20, with 1 being the lowest filtration level and 20 being the highest. The higher the MERV rating, the more effective the filter will be. However, if the filter is too dirty or too strong, it can cause airflow problems that impair efficiency and performance. To determine resistance, filters use the MERV rating system. If you use a higher MERV index that traps more particles, you may need to change the filter more often. While the highest MERV ratings are the most effective for air quality, they can damage your HVAC system.
A MERV rating of 13 to 16 is considered to be hospital-grade air quality, so your home is unlikely to need more than that rating. The MERV rating is essential to finding the right furnace filter for your home. To ensure your home has clean air and your HVAC system runs efficiently, make sure you choose an air filter with an appropriate MERV rating.
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