Merv 8 vs Merv 13 filter
I have an ERV that came stock with MERV 13 for fresh air intake filter, MERV 6 on supply to house, they have optional HELA and MERV 8.
How much less airflow restriction will I get by switching to MERV8 or MERV 6?
ERV: Panasonic ERV Intelli Balance 200
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