- Is MERV 8 enough for allergies?
- MERV 8 catches pollen, dust mites, lint and mold spores, which covers most seasonal allergy triggers. It will not catch fine smoke or virus-sized particles; step up to MERV 11 or 13 if you need that.
- How often should I change a 1-inch MERV 8 filter?
- Every 30 to 90 days. Monthly is safest in homes with pets or heavy dust; every three months is fine in a clean home with no pets.
- Will this filter fit my furnace?
- Only if your slot or return grille takes a 24 in x 30 in x 1 in filter. Measure the opening, not the old filter, since nominal sizes run slightly large.
- How long does a 24-pack last?
- Two years if you change monthly, four years at every three months. Check the box for storage damage before the return window closes.
- Is the 24-pack cheaper than buying singles?
- Yes. At $232.08 at The Home Depot as of November 7, 2026, it works out to about $9.67 per filter, well below typical single-filter prices for this size.
- Where is the Simply 24 in x 30 in x 1 in MERV 8 FPR Furnace Air Filter 24-Pack cheapest?
- At The Home Depot, for $232.08, as of our latest check.