Replacement 20x25x5 air filters for homes, offices, and commercial HVAC systems. This collection covers every MERV rating we stock: fiberglass MERV 1–4, pleated MERV 8, MERV 10, MERV 11, and hospital-grade MERV 13.

20+ years in filtration 4.8 from 1,000+ reviews

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  • 20x25x5 NaturalAire Choice Allergen MERV 8 82655.052025 (2 Filters)
    MERV 8
    AAF Flanders

    20x25x5 NaturalAire Choice Allergen MERV 8

    $112.99
    $112.99
    Case of 2 $56.50/filter
  • 20x25x5 NaturalAire Optimum Allergen MERV 11 82755.052025 (2 Filters)
    MERV 11
    AAF Flanders

    20x25x5 NaturalAire Optimum Allergen MERV 11

    $145.99
    $145.99
    Case of 2 $73.00/filter
  • Custom filters
    Built to your exact size

    Any size, cut to 1/8″. Depth 1″–6″ · MERV 1–13.

    Build your filter
  • 20 x 25 x 5 Koch Multi-Pleat AB MERV 11 replacement filter for Trion AirBear
    MERV 11
    Koch

    20x25x5 Multi-Pleat AB for AirBear MERV 11

    $139.02
    $139.02
    Case of 3 $46.34/filter
  • 20 x 25 x 5 Koch Multi-Pleat AB MERV 8 replacement filter for Trion AirBear
    MERV 8
    Koch

    20x25x5 Multi-Pleat AB for AirBear MERV 8

    $110.97
    $110.97
    Case of 3 $36.99/filter
  • 20 x 25 x 5 Koch Multi-Pleat AB MERV 13 replacement filter for Trion AirBear
    MERV 13
    Koch

    20x25x5 Multi-Pleat AB for AirBear MERV 13

    $186.48
    $186.48
    Case of 3 $62.16/filter

Commercial & facilities

Need 20x25x5 by the pallet?

Volume pricing on any size or MERV, plus recurring delivery schedules. We handle facilities and commercial orders daily and can usually match or beat distributor pricing.

Request a quote 1-866-469-8556 Talk to a filter expert

20x25x5 HVAC, Furnace & AC Filters

Replacement 20x25x5 air filters for homes, offices, and commercial HVAC systems. This collection covers every MERV rating we stock: fiberglass MERV 1–4, pleated MERV 8, MERV 10, MERV 11, and hospital-grade MERV 13. Free shipping on orders over $50.

If your rack is labeled 20x25x5, any filter here will fit. Actual dimensions vary slightly by manufacturer—check the product page for exact specs. Need a non-standard size? Our custom filters cut to 1/8″ precision.

Which MERV Rating Should I Choose?

  • MERV 1–4 (fiberglass) — Lowest cost. Protects your blower and coil from debris but won't improve air quality. Best for rentals and monthly-change schedules.
  • MERV 8 (pleated) — Residential and light-commercial standard. Captures dust, pollen, lint, and mold spores.
  • MERV 10–11 — Captures pet dander, finer particulate, and some bacteria. Recommended for pets, allergies, and facilities pursuing better IAQ.
  • MERV 13 — Hospital-grade. Captures smoke, bacteria, virus carriers, and most airborne allergens. ASHRAE and CDC recommend MERV 13 where the HVAC system can support it.

Not sure? Take our MERV quiz or call 1-866-469-8556.

How Often Should I Change a 20x25x5 Filter?

5″ media cabinets are the deepest residential filter format and run the longest between changes—typically every 8–12 months. One filter change per year per system is why 5″ media cabinets are popular in multi-tenant residential and light-commercial applications. An annual subscription matches the natural schedule.

Why Buy From RememberTheFilter.com

  • Trusted brands — AAF Flanders, Koch, and our own PrimeShield line, built by manufacturers we've partnered with for nearly two decades.
  • Filter Fit Guarantee — if it doesn't fit as expected, we'll make it right.
  • Free shipping over $50 to the lower 48, subscription discounts up to 10%, commercial & bulk pricing available.