Furnace Filters
Best 15x25x1 Furnace Filter (2026): 5 Models Side by Side
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For a 15x25x1 furnace filter, the Filtrete 16x25x1 leads with MERV 5 filtration at MPR 300 in a 6-pack of pleated filters. The AIRx MERV 11 pick suits buyers who want a higher MERV rating, while the JASENG 2-pack fits a smaller restock. Check the actual size on each pick before ordering, since nominal size and actual size differ here.
Starting out? See the main guide: Best Furnace Air Filters
Top picks at a glance
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Best OverallFiltrete 16x25x1 Air Filter9.8 View on Amazon -
Runner-UpSimply 14x25x1 Air Filter9.7 View on Amazon -
9.5 View on Amazon -
Also GreatFilter King 15x25x1 Air Filter MERV9.4 View on Amazon -
Also GreatJASENG 16x25x1 MERV 8 Air Filter9.2 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. Filtrete 16x25x1 Air Filter | MERV 5 | 6-pack | — | — |
| 2. Simply 14x25x1 Air Filter | MERV 8 | 6-pack | — | — |
| 3. AIRx Filters 15x25x1 Furnace AC Filter MERV | MERV 11 | 6-pack | — | — |
| 4. Filter King 15x25x1 Air Filter MERV | MERV 8 | 6-pack | — | — |
| 5. JASENG 16x25x1 MERV 8 Air Filter | MERV 8 | 2-pack | — | — |
Filtrete 16x25x1 Air Filter
It pairs MERV 5 filtration with MPR 300 in a pleated 6-pack sized for standard furnace and air conditioner systems.
- MERV rating: MERV 5
- Pack size: 6-pack
Good for
- Buyers who want a 6-pack of pleated filters
- Owners of furnace and air conditioner systems using 16x25x1 filters
Skip it if
- You want a MERV rating above 5
- You want to buy a single filter only
Each filter measures 15.69 x 24.69 x 0.81 inches against a 16x25x1 nominal size, and the box holds 6 filters. Filtrete 3-in-1 technology pulls in and traps particles while air flows through. Change the filter at least once every 90 days, and the Filtrete Smart App sets 30-, 60- or 90-day reminders.
Simply 14x25x1 Air Filter
It offers Merv 8 filtration at MPR 600 in a 6-pack with a pleated, electrostatic charged synthetic filter.
- MERV rating: MERV 8
- Pack size: 6-pack
Good for
- Buyers who want Merv 8 filtration in a 6-pack
- Owners of air conditioner, furnace, or heat pump systems
Skip it if
- You want a MERV rating above 8
- You want a 2-pack instead of a 6-pack
The box holds 6 air filters plus an installation guide, and the filter lasts up to 3 months. It uses 100% American components, including recycled materials.
AIRx Filters 15x25x1 Furnace AC Filter MERV
It brings MERV 11 filtration in a 6-pack with a pleated design and moisture-resistant double-wall beverage board frames.
- MERV rating: MERV 11
- Pack size: 6-pack
Good for
- Buyers who want MERV 11 filtration for 15x25x1 systems
- Owners of furnace, air cleaner, or air purifier systems
Skip it if
- You want a MERV rating below 11
- You want a 2-pack instead of a 6-pack
Replace it every 60 to 90 days, or every 30 to 60 days for homes with pets or frequent system use. The nominal size is 15x25x1 with an actual size of 14.50 x 24.50 x 0.75 inches.
Filter King 15x25x1 Air Filter MERV
It gives MERV 8 filtration in a 6-pack of pleated filters that last up to 90 days before replacement.
- MERV rating: MERV 8
- Pack size: 6-pack
Good for
- Buyers who want MERV 8 filtration in a 6-pack
- Owners of air conditioner and furnace systems
Skip it if
- You want a MERV rating above 8
- You want a 2-pack instead of a 6-pack
The pleated design captures more particles and extends the lifetime of the filter without impacting air flow. Installation is open, slide, and close, and the actual size is 14.5 x 24.5 x .75 inches against a 15 x 25 x 1 nominal size. Change it every 30 to 90 days for 1 inch filters.
JASENG 16x25x1 MERV 8 Air Filter
It packs MERV 8 filtration at MPR 600 and FPR 5 into a 2-pack for furnace, air conditioner, and heat pump systems.
- MERV rating: MERV 8
- Pack size: 2-pack
Good for
- Buyers who want a smaller 2-pack restock
- Owners of furnace, heat pump, or air conditioner systems
Skip it if
- You want a MERV rating above 8
- You want a 6-pack instead of a 2-pack
The pleated filter has more pleats to filter more unwanted air particles, and the exact size is 15.67 x 24.68 x 0.79 inches. It fits furnace, air conditioner, heat pump, or HVAC systems and installs in a few seconds. Replace it every 90 days to keep the heating and cooling system at optimum performance.
How to choose
Nominal size versus actual size
The picks here carry 14x25x1, 15x25x1, or 16x25x1 nominal sizes, yet the actual sizes differ: 15.69 x 24.69 x 0.81 inches for the Filtrete, 14.50 x 24.50 x 0.75 inches for the AIRx, and 15.67 x 24.68 x 0.79 inches for the JASENG. Measure your filter slot before ordering and match the actual size, not the nominal size, so the filter seats in the slot.
What a MERV rating means
MERV rates how well a filter captures particles, with a higher number meaning finer capture. This list spans MERV 5 for the Filtrete, MERV 8 for the Simply, Filter King, and JASENG picks, and MERV 11 for the AIRx. Pick the rating that fits your system, and check that your system accepts that rating.
Replacement timing and pack size
The Filtrete, Simply, and JASENG picks last up to 3 months, the AIRx runs 60 to 90 days, and the Filter King lasts up to 90 days. The Filtrete, Simply, AIRx, and Filter King picks come in 6-packs, while the JASENG comes in a 2-pack. Match the pack size to your replacement schedule so a fresh filter is on hand at each change.
FAQ
When should I replace a 15x25x1 furnace filter?
The Filtrete, Simply, and JASENG picks last up to 3 months, the AIRx runs 60 to 90 days, and the Filter King lasts up to 90 days. Change the filter on that schedule to keep air moving through the system.
What is the difference between nominal size and actual size?
Nominal size is the rounded size on the box, while actual size is the measured size of the filter. The Filtrete measures 15.69 x 24.69 x 0.81 inches and the AIRx measures 14.50 x 24.50 x 0.75 inches, so match the actual size to your slot.
Which MERV rating do these furnace filters have?
The Filtrete is MERV 5, the Simply, Filter King, and JASENG picks are MERV 8, and the AIRx is MERV 11. A higher MERV number means finer particle capture.
