Derek Cole explains MERV ratings for air filters and why they matter. He recommends MERV 8 as the minimum for balancing airflow and filtration, warns against very low ratings, and shares which filters he stocks in his store.
MERV 8
MERV 8
So stay away from the five. Stay away from the, I don't know, one zero. I'm not sure what the MERV rating is on that one, but when you come over to the red. So the ones we keep in stock, the ones we also have in our store, we have MERV8. MERV whatever. However, how you want to go? MERV8 is really the least I would ever go because that's a good balance between airflow and catching stuff.
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