Carrier Air Filters Compared: Genuine and Compatible Fits

Best for
Infinity 20×25 owners open to third-party

The Filter-Monster Compatible with Bryant Carrier Infinity filter is a third-party replacement, not made by Carrier. It is designed to match the Carrier GAPCCCAR2025 filter and fit the Carrier Infinity GAPAAXCC2025 air purifier, and the listing also names select Bryant, Payne and Day-Night units plus a few other air cleaner brands.

It is MERV 15, the same rating as the genuine Carrier filter below, which is aimed at pollen, dust, pet dander, mold spores and other fine particles. For anyone fighting dust around a gaming PC, MERV 15 is about as fine as residential media filters get. The listing recommends replacing it once a year in normal conditions, or more often if air is harsh. The material is listed as cotton in a pleated construction.

• MERV 15 pleated media
• Matches Carrier GAPCCCAR2025
• Replace about once a year

Best for
Genuine Carrier 21×24 air purifier owners

The Carrier GAPCCCAR2420 Air Purifier Filter is a genuine Carrier part. It is MERV 15 with pleated construction, a nominal size of 21 x 24 x 3.5 inches and an actual size of 21 5/8 x 24 1/4 x 3 1/2 inches. The listing gives a filter life of 12 months and a pack size of one.

This is the filter for owners of the 21×24 Carrier air purifier cabinet who want the original part rather than a compatible one. The 20×25 and 21×24 cabinets look similar but are not interchangeable, so check the model on your cabinet before ordering. It offers the same MERV 15 rating as the Filter-Monster, and the main reason to choose it is that it comes from Carrier. For portable room-level cleaning near your desk, a standalone air purifier for homes with pets can complement whole-home filtration.

Best for
Carrier Transicold reefer unit operators

The EZROAD 2X Air Filter 30-00471-20 Compatible filter is not for your house. It is a third-party replacement for Carrier Transicold reefer units, the refrigeration systems on trucks and trailers. The listing says plainly it is a replacement part, not an original, but is designed to function like one.

Compatible models include the X2 1800, 2100, 2100A, 2100R, 2500A and 2500R, X4 7500 and 6600 MT, Ultima and Ultra XTC and XT, and Vector 8600MT and 6600. It cross-references part numbers 30-00471-20, 300047120, HM-AF-0009, PA5584, P611858 and LAF4348. You get two filters in the pack with a 1-year warranty. We include it because a Carrier Transicold air filter search lands in the same place as home filters; if you do not run a reefer unit, skip this one.

• Two filters per pack
• Fits many Carrier Transicold reefer models
• 1-year warranty

Best for
Owners of Carrier 31MF media cabinets

The 88NA2506MB01 Replacement Filter 2-Pack is sold under a third-party brand, listed as Fuceter, not Carrier. The listing calls 88NA2506MB01 the factory original model number, but the product itself is a replacement made to that specification. It says it fits Bryant 902B and 902BXX020-A and Carrier 31MF020, 31MF120, 31MF02001 and 31MF020100 cabinets.

It is an expandable pleated paper media filter, 25 1/16 x 6 5/16 inches collapsed, that opens up inside the housing. It is rated MERV 10, and the listing claims it traps 97 percent of airborne particles, reducing odor, dander, pollen, smoke, grease, soot and dust. Replacement is advised every 8 to 12 months. Two filters per pack means one spare on the shelf. It suits owners of those specific cabinets; everyone else should skip it.

The Carrier & Bryant EXPXXFIL0016 is a genuine 16 x 25 x 5 inch EZ Flex expandable media filter, sold under the Bryant brand, which is part of the same family as Carrier. It is MERV 10, pleated, and comes as a case of two.

The description says the EZ Flex traps airborne particles while allowing free airflow, which helps maintain energy efficiency and reduce wear on system components. Beyond that, the listing is thin: no filter life and no detailed particle claims. The dimension field shows packaged size rather than the filter itself. It is the straightforward genuine choice for anyone with a 16x25x5 EZ Flex cabinet. If you are also swapping filters in a room purifier, our replacement filter guide covers that side.

• Genuine EZ Flex 16 x 25 x 5
• MERV 10 expandable media
• Two filters per case

Best for
Fan coil units needing a washable filter

The Carrier Fan Coil Filter KFAFK0312LRG (317659-403) is a different type: a washable filter with a metal frame, described as OEM hog hair media, sized 19.75 x 21.5 x 1 inches nominal and 0.875 inch thick actual. It fits Carrier, Bryant and Payne fan coil units, including FX4, FV4, FK4, FB4, FA4, FC4, FH4, FE4 and FY4 families, and Payne PF1MNC models, plus a couple of units from another HVAC maker.

It is only MERV 4, which catches larger dust and lint but not the fine particles a MERV 10 or 15 filter targets. The listing also conflicts with itself: it calls the filter washable and permanent while saying replace every 3 months. The practical reading is to clean or check it every 3 months. It suits fan coil owners who need the right fit; for serious dust control, pair it with better room-level filtration.