- Is MERV 13 too restrictive for my furnace?
- MERV 13 is fine for most modern systems, but it adds more airflow resistance than MERV 8. If your system is older or already runs hot, check the manual or ask an HVAC tech before switching.
- How often should I change these filters?
- Most homes change a 1-inch filter every 60 to 90 days. With pets, heavy dust or a MERV 13 filter loading faster, check monthly and replace when it looks gray.
- Will this fit a 24 x 24 x 1 slot?
- Yes. The nominal size is 24 x 24 x 1 inches, the standard size for that return grille. Actual dimensions can run slightly under nominal, so measure your slot if it is tight.
- Is this a good price for a six-pack?
- At $79.97 at The Home Depot as of November 7, 2026, it is about $13.33 per filter. That is a normal price for MERV 13, so there is no urgency to buy before it rises.
- Does MERV 13 help with allergies?
- MERV 13 captures a high share of particles in the 0.3 to 10 micron range, including pollen, pet dander and smoke. It helps, but it works alongside cleaning and source control, not instead of them.
- What is in the box?
- Six pleated 24 x 24 x 1 inch MERV 13 filters. No frame or hardware is included; the filters slide into your existing slot.
- Where is the Simply 24 in x 24 in x 1 in MERV 13 FPR Furnace Air Filter 6-Pack cheapest?
- At The Home Depot, for $79.97, as of our latest check.