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MERV Ratings

The typical configuration of an air purifier has a pre-filter and a main filter. The pre-filter is designed to capture the larger sized particles, to protect and extend the life of the main filter. The quality of the pre-filter is gauged by the MERV Scale.

Many air purifiers use a foam pre-filter and those fall in the MERV 1-4 range and are the lowest performing filters. A higher performance pre-filter will further improve the quality of the air. We recommend a MERV 6 to MERV 8 rated pre-filter to balance the filtration capabilities with less airflow resistance. Every air purifier offered from Oransi has a MERV Rating of 16, which is the highest rating of any purifier on the market.

MERV Ratings Chart
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