Why Not Use a Higher Grade HEPA Filter?

Smart Air’s current HEPA filter is selected from more than 20 different pricings and different purification efficiency after many experiments and comparisons. A higher grade filter with a higher purification efficiency also means lower airflow. Thus, we combined the fan power and effectiveness to select the current filter. See here for more details: https://smartairfilters.com/en/blog/weaker-filter-stronger-purifier/

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