Collection: MERV 8 Air Filters

MERV 8 is the everyday furnace and AC filter, and it is the rating most equipment manufacturers assume. Under ASHRAE 52.2 testing a MERV 8 filter captures 70 percent or more of the particles in the 3 to 10 micron range, which covers household dust, lint, pollen and mold spores. It is the right choice when the priority is protecting the blower and the coil at the lowest airflow cost, in a home without allergy concerns.

Poseidon stocks MERV 8 in 73 nominal sizes, listed in full below. Pleated filters ship as a 6 pack; the deep media filters that fit Honeywell, Space Gard and Air Bear cabinets ship as a 2 pack.

Shop by the nominal size printed on the cardboard frame of the filter you are replacing, not by the tape measure reading. Nominal is the rounded size the industry labels; the exact cut size is listed on every product page. A 1 inch pleated filter is usually replaced every 90 days and a 4 inch or deeper media filter every 6 to 12 months, sooner in a home with pets or a nearby construction site. Subscribe and save so the next set arrives before the current one loads up, and shipping is free on orders over $75.