When it comes to air filtration, airflow, and affordability, the best MERV rating for most homes is between 6 and 13. This range of filters can last up to six months before needing to be replaced. High-end filters for domestic use or high-quality commercial filters usually have a MERV rating of 8 to 13. Air filters used in hospitals and homes typically have a MERV rating of 9 to 12, but make sure your air conditioning system is compatible. A higher MERV rating means greater resistance, which reduces airflow.
When researching air conditioning systems, it's important to consider airflow as it affects the performance and longevity of your furnace or air controller. Airflow is also key to a comfortable home. MERV 10 - MERV 12 air filters are capable of trapping particles down to 1 micron, such as car exhaust, pollen, and mold spores. While MERV 8 is known to be effective at filtering pollutants such as pollen, dust mites, sawdust, mold spores, and lint from the air, a higher MERV rating will clean the air even more.
The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) recommends MERV models 13 and 14 for optimal filtration. However, it's best to select a filter with the highest possible MERV rating for your specific air conditioning system. A MERV rating of 1 to 6 is the lowest range of MERV ratings, but that doesn't mean you should rule out a filter with a rating within this range. MERV 5 - MERV 8 filters provide good filtration and remove most pollen, mold spores and dust mites.
When selecting an air filter for your home or business, it's important to understand how the MERV leaderboard works so you can choose the right filter for your needs.
