Furnace Filters
Best 24x30 AC Filter (2026): Our 5 Picks Ranked
As an Amazon Associate I earn from qualifying purchases. Specs below come from each product's Amazon listing; we do not test products in person.
The Filter King leads this list as a MERV 8 pleated 6-pack that lasts up to 90 days before needing replacement. The Simply and Filtrete 6-packs step up to MERV 11 and MERV 13, the UBeesize is a washable MERV 8 filter with a 5-year warranty, and the Glasfloss case holds 12 fiberglass filters. Each one fits the 24x30x1 slot, so the choice comes down to MERV rating, pack size and washable versus disposable.
Starting out? See the main guide: Best Furnace Air Filters
Top picks at a glance
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Best OverallFilter King 24x30x1 Air Filter MERV9.8 View on Amazon -
Runner-UpSimply 24x30x1 Air Filter9.7 View on Amazon -
Also GreatFiltrete 24x30x1 Air Filter9.7 View on Amazon -
9.3 View on Amazon -
Also GreatGlasfloss 24x30x1 Fiberglass Air Filters9.2 View on Amazon
Compare the specs
Ranked on pack size from each listing, plus how many buyers have rated it. A dash (—) means we could not confirm that figure from the listing.
| Pick | MERV rating | Pack size | Weight | Warranty |
|---|---|---|---|---|
| 1. Filter King 24x30x1 Air Filter MERV | MERV 8 | 6-pack | — | — |
| 2. Simply 24x30x1 Air Filter | MERV 11 | 6-pack | — | — |
| 3. Filtrete 24x30x1 Air Filter | MERV 13 | 6-pack | — | — |
| 4. UBeesize 24x30x1 Reusable Electrostatic Air Filter HVAC | MERV 8 | — | — | 5-year |
| 5. Glasfloss 24x30x1 Fiberglass Air Filters | — | — | — | — |
Filter King 24x30x1 Air Filter MERV
A MERV 8 pleated 6-pack that lasts up to 90 days, with an actual size of 23.5 x 29.5 x .75 inches.
- MERV rating: MERV 8
- Pack size: 6-pack
Good for
- Buyers who want a 6-pack of MERV 8 filters
- Owners replacing a 24x30x1 filter on a 90-day cycle
Skip it if
- You need a MERV rating above 8
- You need more than 6 filters per purchase
The pleated design captures particles without impacting air flow, and the maker recommends changing 1 inch filters every 30 to 90 days. Installation is open, slide and close, and the actual size is 23.5 x 29.5 x .75 inches against the 24x30x1 nominal size.
Simply 24x30x1 Air Filter
A MERV 11 pleated 6-pack that traps 95% of airborne particles, with airflow arrows for central units and return grilles.
- MERV rating: MERV 11
- Pack size: 6-pack
Good for
- Buyers who want a MERV 11 6-pack
- Owners who change filters every 3 months
Skip it if
- You need a MERV rating above 11
- You need more than 6 filters per purchase
The pleated filters have a higher pleat count, and the maker claims up to 3 months of filtration per filter. Airflow arrows guide insertion into the filter slot for central units or return grilles. The filters use 100% American components, including recycled materials.
Filtrete 24x30x1 Air Filter
A MERV 13 MPR 1900 6-pack with 3-in-1 technology and a 90-day change reminder through the Filtrete Smart App.
- MERV rating: MERV 13
- Pack size: 6-pack
Good for
- Buyers who want a MERV 13 6-pack
- Owners who want app reminders for filter changes
Skip it if
- You need a MERV rating above 13
- You need more than 6 filters per purchase
The 3-in-1 technology pulls in and traps particles, and the filters capture 24% more microparticles than MERV 13 requirements. Microparticles are 0.3 to 1.0 microns in size, and the maker advises changing the filter at least once every 90 days. The Filtrete Smart App sets 30-, 60- or 90-day reminders on iOS or Android.
UBeesize 24x30x1 Reusable Electrostatic Air Filter HVAC
A washable MERV 8 electrostatic filter with an aluminum frame and a 5-year warranty, cleaned with water and detergent.
- MERV rating: MERV 8
- 5-year warranty stated
Good for
- Buyers who want a washable filter
- Owners who want a filter with a 5-year warranty
Skip it if
- You need a MERV rating above 8
- You need a 6-pack of filters
Cleaning uses water and a little detergent, the filter dries naturally, and the maker recommends cleaning every 3 months, and gloves for changing. It fits furnace, HVAC and AC systems.
Glasfloss 24x30x1 Fiberglass Air Filters
A case of 12 fiberglass filters with a double-strut design and a heavy-duty craftboard frame, made in USA.
Good for
- Buyers who want a case of 12 filters
- Owners who want a disposable filter with no metal parts
Skip it if
- You need a case smaller than 12 filters
- You need more than 10% greater open area
The double-strut design opens 10 percent more open media area than a traditional metal grill filter, and the fiberglass media is bonded to a craftboard frame that will not sag or collapse. Each filter measures 23-5/8 x 29-5/8 x 3/4 inches, slightly under the 24x30x1 nominal size, and the filters carry no metal parts for disposal with regular trash.
How to choose
Match MERV rating to the job
MERV ratings in this list run from 8 to 13. The Filter King and UBeesize sit at MERV 8, the Simply at MERV 11, and the Filtrete at MERV 13. A higher MERV number means finer particle capture on the maker's scale, so compare the rating against the dust load in the home and the airflow the system needs. Check the rating before ordering.
Check actual size against nominal size
Every filter here carries the 24x30x1 nominal size, but actual sizes run slightly under it. The Filter King measures 23.5 x 29.5 x .75 inches, the Filtrete 23.81 x 29.81 x 0.78 inches, and the Glasfloss 23-5/8 x 29-5/8 x 3/4 inches. Measure the slot before ordering, since a filter that binds will not seat well, and compare the actual size against the slot rather than the nominal size alone.
Plan changes and upkeep
Disposable pleated filters need regular swaps, while the washable UBeesize is cleaned instead of replaced. The UBeesize maker recommends cleaning every 3 months with water and a little detergent. Mark the change date on the calendar so the interval does not slip.
FAQ
What MERV rating should I pick for a 24x30x1 filter?
This list covers MERV 8, MERV 11 and MERV 13. The Filter King and UBeesize are MERV 8, the Simply is MERV 11, and the Filtrete is MERV 13. Pick the rating that matches the dust load and the airflow the system needs.
When should I change a 24x30x1 filter?
The Filter King lasts up to 90 days, the Simply claims up to 3 months, and the Filtrete maker advises a change at least once every 90 days. The washable UBeesize is cleaned every 3 months instead of replaced.
What is the actual size of a 24x30x1 filter?
Nominal size is 24x30x1, but actual sizes run slightly under it. The Filter King measures 23.5 x 29.5 x .75 inches, the Filtrete 23.81 x 29.81 x 0.78 inches, and the Glasfloss 23-5/8 x 29-5/8 x 3/4 inches. Measure the slot before ordering.
Is a washable filter better than a disposable one?
The UBeesize is the washable pick here, with an aluminum frame, a MERV 8 level and a 5-year warranty, cleaned with water and a little detergent every 3 months. The rest are disposable filters sold in packs or a case.
