I opted for the MERV 8 filters, which are the "sweet spot" for most homes—they catch dust, lint, and pollen without overworking the AC motor. After a month of use, I pulled the first one out to check it, and the amount of gray dust it trapped was impressive (and slightly gross).
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I was worried the filters would arrive crushed, but they came in a sturdy, flat-packed cardboard box. Shipping took about three days. The filters were pristine—no bent frames or torn pleats, which is crucial for a tight seal in the HVAC unit. I opted for the MERV 8 filters, which
