- Is MERV 13 too restrictive for my furnace?
- MERV 13 is denser than MERV 8 and can reduce airflow in systems with undersized ducts or a weak blower. Most modern residential systems handle it, but check your furnace manual's maximum MERV rating before switching.
- How often should I change these filters?
- Most homes change a 1-inch filter every 60 to 90 days. With six filters, that is roughly a year to 18 months of coverage; homes with pets or heavy dust should change more often.
- What does MERV 13 actually capture?
- MERV 13 catches particles down to 0.3 microns at roughly 50 to 75 percent efficiency, including pollen, mold spores, pet dander and smoke. It does not remove odors or gases.
- Will this fit a 12x24x1 slot exactly?
- Yes, it is made for nominal 12 x 24 x 1 inch grilles. Actual dimensions can run slightly under nominal, so measure your slot before ordering if it is tight.
- Is $49.97 for six a good price?
- That is about $8.33 per MERV 13 filter, which is low for this size and rating. Comparable MERV 13 six-packs often run $60 to $90.
- Does it come with anything else in the box?
- The box contains six filters only. No frame, clips or installation hardware is included.
- Where is the Simply 12 in x 24 in x 1 in MERV 13 FPR Furnace Air Filter 6-Pack cheapest?
- At The Home Depot, for $49.97, as of our latest check.