When it comes to air filtration, the MERV rating is a key factor in determining the effectiveness of the filter. The MERV classification is used to indicate the efficiency of the filter in trapping particles of certain sizes. The lowest ratings, MERV 1 to 8, are the least effective at filtering particles, but they offer the least air resistance. A MERV 8 filter is not able to block out all air pollutants.
This means that things like pet dander, smoke, and some airborne bacteria can pass through it. The filter can trap pollen and dust, as well as dust mites and mold spores. If you're looking for more protection from the full range of contaminants that could reach your home, you'll need to opt for a higher MERV rating. When considering the airflow capabilities of the MERV 8 versus the MERV 11, raising just three MERV rating levels can be a smart decision to convert air into an air filter or a detrimental option for the entire air conditioning system.
A MERV 11 air filter is more expensive than a standard filter, but it's usually worth paying a few more dollars per filter for their added efficiency. Upgrading to a MERV 13 filter is cost-effective and the most efficient option to ensure clean, quality air in your indoor space. One thing to keep in mind is that a MERV 11 air filter may need to be changed more often than a MERV 8 air filter. Air filters with higher MERV ratings can filter more, but the thickness of the filter material can restrict airflow.
As the MERV 8 is at the high end of what is considered best for homes, it can be tempting to choose a MERV 8 air filter. In addition, you will not exert additional pressure on the boiler, since the mesh of the material is not as dense as that of a higher MERV. If someone has an allergy or respiratory problem, opting for a higher MERV rating is recommended. A MERV 11 or even a MERV 13 air filter will provide better protection from airborne contaminants. It's important to remember that these filters may need to be changed more often than lower rated filters. When it comes to air filtration, understanding the different MERV ratings and their capabilities is essential.
A MERV 8 filter offers some protection from airborne pollutants, but if you're looking for more protection from contaminants, you'll need to opt for a higher rated filter.