When it comes to air filtration, MERV ratings range from 1 to 20, with 1 being the lowest level of filtration and 20 being the highest. While MERV 16 to 20 filters are generally only found in hospitals, clean rooms, and nuclear power plants, the home air filters you're looking for have a MERV rating between 5 and 13. This range offers a good balance between air filtration, air flow, and affordability.A MERV rating between 6 and 13 is usually sufficient for most residences. If you select an air filter with a MERV 13 rating, it can last up to six months before it needs to be replaced. The minimum efficiency index (MERV) of an air filter measures how effectively the filter prevents dust and other contaminants from passing through the filter and reaching the air stream.Filters with a MERV rating of 13 to 16 trap 90 to 95% of airborne particles from 3 to 10 microns in size, 90% of those from 1 to 3 microns and 70 to 90% of particles as small as 0.3 microns.
If your home's air conditioning system isn't capable of supporting the MERV 13, opt for a filter with the next highest possible rating.Filter technology has grown by leaps and bounds over the years, and MERV ratings are designed to help us determine the most effective and efficient air filter options for heating and cooling systems. It's best to follow the oven manufacturer's recommendations or consult an HVAC professional to determine exactly what MERV rating is best for your specific system.In general, filters with a MERV rating of 16 or lower are considered filters suitable for air conditioning systems for residential, commercial and general hospital use. People with severe allergies should choose a filter with a higher MERV rating or also have an air purifier in their home with a True HEPA filter.The higher the MERV rating of a filter, the fewer dust particles and other contaminants can pass through it. Higher MERV ratings must be changed more frequently (at least every three months) to avoid airflow restriction, which can cause the system to operate inefficiently or even damage it.In conclusion, when selecting an air filter for your home, it's important to consider your needs and choose one that offers a good balance between air filtration, airflow, affordability, and efficiency.
The best MERV rating for residential use is one that properly cleans the air in your home without decreasing airflow or overloading your HVAC equipment.
