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14x25x1 Air Filters & Replacements

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Products   MERV Rating Filter Life Annual Cost Value Pack
MERV 8 14x25x1 SpiroPure O
MERV 8 14x25x1 Filters (Nominal Size)
    5 stars
  • $43.28
  • 6 Filters
  • ($7.21 / filters)
MERV 8
Learn more 		3 Months $28.85

$43.28
6 Filters

($7.21 / filter)
Lennox 98N45 Lennox
98N45 Air Filters 14" x 25" x 1"
  • $64.99
  • 1 Filters
  • ($64.99 / filters)
MERV 8
Learn more 		3 Months $259.96

$64.99
1 Filters

($64.99 / filter)
14x25x1 MERV8 SpiroPure O
MERV 8 14x25x1 Filters (Nominal Size)
    5 stars
  • $86.55
  • 12 Filters
  • ($7.21 / filters)
MERV 8
Learn more 		3 Months $28.85
Best Value!

$86.55
12 Filters

($7.21 / filter)
MERV 11 14x25x1 SpiroPure O
MERV 11 14x25x1 Filters (Nominal Size)
    5 stars
  • $46.44
  • 6 Filters
  • ($7.74 / filters)
MERV 11
Learn more 		3 Months $30.96

$46.44
6 Filters

($7.74 / filter)
14x25x1 MERV11 SpiroPure O
MERV 11 14x25x1 Filters (Nominal Size)
    5 stars
  • $92.89
  • 12 Filters
  • ($7.74 / filters)
MERV 11
Learn more 		3 Months $30.96

$92.89
12 Filters

($7.74 / filter)
MERV 13 14x25x1 SpiroPure O
MERV 13 14x25x1 Filters (Nominal Size)
    5 stars
  • $52.78
  • 6 Filters
  • ($8.80 / filters)
MERV 13
Learn more 		3 Months $35.19

$52.78
6 Filters

($8.80 / filter)
14x25x1 MERV13 SpiroPure O
MERV 13 14x25x1 Filters (Nominal Size)
  • $105.55
  • 12 Filters
  • ($8.80 / filters)
MERV 13
Learn more 		3 Months $35.18

$105.55
12 Filters

($8.80 / filter)
MERV Rating - Contaminant Removal Guide
MERV Rating   8 11 12 13
Lint & Dust  
Dust Mite Debris  
Pollen  
Mold Spores  
Pet Dander  
Auto Emissions  
Smoke  
Tobacco  
Bacteria  
Note: equals efficient removal of contaminant by filter.

Find the right 14x25x1 air or furnace filter for your system. Explore available MERV ratings and filter options, then check the product details to make sure you have the right fit. 14x25x1 is a nominal size, which means a filter’s actual measurements may be slightly smaller and can vary by product. Start with the size printed on your current filter, then check the product page for its actual dimensions, MERV rating, pack quantity, availability, and fit information before ordering. Looking for another size? Shop all furnace filters.

14x25x1 Nominal Size vs 14 x 25 Actual Footprint

A filter labeled 14x25x1 does not necessarily measure exactly 14 inches by 25 inches by 1 inch. Actual dimensions can vary by product and manufacturer. AllFilters also offers filters with a 14 x 25-inch actual footprint. Check all three actual dimensions on the exact product page and compare them with your existing filter and system requirements before ordering. Some filters with a 14 x 25-inch actual footprint may be less than 1 inch thick. For help measuring, see our air filter sizing guide.

How to Choose a 14x25x1 Filter

  1. Confirm whether you need the nominal 14x25x1 size or an exact-dimension 14 x 25 filter. These are separate shopping intents on AllFilters.
  2. Open the exact product page and compare actual dimensions with the filter currently installed in your system.
  3. Choose a MERV rating your HVAC system can accommodate. MERV 8, 11, and 13 options are currently represented in the nominal-size assortment, but a higher rating is not automatically correct for every system.
  4. Check product type and brand. Standard pleated, carbon/odor-control, and OEM products can have different dimensions, features and specifications.
  5. Review pack quantity, made-to-order status, return restrictions, lead time, and product-specific replacement guidance before purchase.

Compare filter ratings: MERV 8 filters, MERV 11 filters, and MERV 13 filters.

14x25x1 Air Filter FAQs

What is the actual size of a 14x25x1 air filter?

There is no single actual measurement that applies to every product sold under the 14x25x1 shopping label. Check the actual length, width, and thickness on the exact product page and compare them with your existing filter and system requirements.
Not necessarily. 14x25x1 is commonly used as a nominal size. AllFilters also offers filters with a 14 x 25-inch actual footprint. Check all three actual dimensions, including thickness, on the exact product page before ordering.
The current nominal 14x25x1 category includes multiple efficiency options, including MERV 8, MERV 11, and MERV 13 products. Check the live product grid and exact PDP for current availability and specifications.
Choose a MERV rating that meets your filtration needs and that your HVAC system can accommodate. Higher MERV ratings have different minimum particle-efficiency requirements, but they are not automatically the correct choice for every system.
The same replacement filter may serve an HVAC system that handles both heating and cooling when its size, format and specifications match the system requirements. Confirm the existing filter and equipment guidance rather than relying on the furnace or AC label alone.
Replacement timing varies with the exact filter, HVAC runtime, operating conditions, and equipment guidance. Follow the applicable product/system instructions and inspect the filter instead of applying one schedule to every 14x25x1 product. For more information, see our guide to furnace filter replacement timing.

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