When it comes to air filters, the MERV rating is an important factor to consider. The MERV rating is a scale from 1 to 16 that describes the minimum efficiency of the air cleaner. A higher MERV rating means more particles will be removed from the air, but is a MERV 10 too high for your needs? Generally, a filter with a higher MERV rating will reduce airflow. However, there are many other factors at play, such as the size of the filter and the type of fan motor in your HVAC system.
If you want to use pleated filters and superior MERV filters, the only safe way to do this is to have a 5-6 inch media filter installed by a professional. Air filters with MERV 13 or higher are recommended for those who prioritize air quality and may have to manage asthma, severe allergies, and other similar circumstances. The Merv 16 would be the best option, since it will filter 95% of particles from the air. As an HVAC professional for more than 40 years, I have seen dozens of systems destroyed by the use of highly restrictive MERV filters.
Using an air filter with a MERV rating that is too high is just as bad as using one that is too low. MERV 8 air filters are very common because they are quite a complete option, so you might think that they are excellent in price but poor in performance. Based on the above-mentioned characteristics, a MERV 8 is considered a superior filtration compared to air filters with a lower MERV rating. If you're unsure which filter is best for your oven or air controller, it's best to consult with a certified HVAC technician.
They can help you determine which filter will provide the best filtration without compromising airflow or damaging your system.