Deep-discount warehouse clearance on HVAC filters. Overstock, end-of-run SKUs, slightly-imperfect packaging, and quantities we need to move. Every warehouse-deal filter ships from the same warehouse as our regular stock and carries the s...

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  • 18x24x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10Up to $18.11 off
    AAF Flanders

    WAREHOUSE DEAL 18x24x1 NaturalAire Microparticle MERV 10

    $59.88
    $59.88 $77.99
    Case of 6 $9.98/filter
  • WAREHOUSE DEAL 18x25x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter (12 Filters)
    MERV 1-4Up to $11.11 offContact Support
    AAF Flanders

    WAREHOUSE DEAL 18x25x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter

    $52.88
    $52.88 $63.99
    Case of 12 $4.41/filter
  • WAREHOUSE DEAL 18x36x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter (12 Filters)
    MERV 1-4Up to $47.11 offContact Support
    AAF Flanders

    WAREHOUSE DEAL 18x36x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter

    $79.88
    $79.88 $126.99
    Case of 12 $6.66/filter
  • WAREHOUSE DEAL 19-3/8x23-1/2x1 Exact Filters Pleated MERV 8 (12 pack)
    MERV 8Up to $32.11 off
    Exact Filters

    WAREHOUSE DEAL 19-3/8x23-1/2x1 Pleated MERV 8

    Only 1 left
    $179.88
    $179.88 $211.99
    Case of 12 $14.99/filter
  • Flanders AAF Basic Filter 20x20x1 EZ Flow II Filters 10055.012020 (12 Filters)
    MERV 1-4Up to $9.99 off
    AAF Flanders

    WAREHOUSE DEAL 20x20x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter

    Only 1 left
    $50.00
    $50.00 $59.99
    Case of 12 $4.17/filter
  • 20x20x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    MERV 13Up to $40.31 off
    AAF Flanders

    WAREHOUSE DEAL 20x20x1 NaturalAire Healthy Ultra MERV 13

    Only 1 left
    $142.99
    $142.99 $183.30
    Case of 10 $14.30/filter
  • WAREHOUSE DEAL 20x20x4 AAF Flanders VariCel 2+ High Capacity No Header MERV 14 3184626-805 (4 Filters)
    MERV 14Up to $76.05 off
    AAF Flanders

    WAREHOUSE DEAL 20x20x4 VariCel 2+ High Capacity No Header MERV 14 3184626-805

    Only 1 left
    $429.88
    $429.88 $505.93
    Case of 4 $107.47/filter
  • WAREHOUSE DEAL 20x20x5 NaturalAire Choice Allergen MERV 8 (2 Filters)
    MERV 8Up to $20.11 offContact Support
    AAF Flanders

    WAREHOUSE DEAL 20x20x5 NaturalAire Choice Allergen MERV 8

    $89.88
    $89.88 $109.99
    Case of 2 $44.94/filter
  • WAREHOUSE DEAL 20x22-1/4x1 Exact Filters Pleated MERV 10 (12 pack)
    MERV 10Up to $57.38 offContact Support
    Exact Filters

    WAREHOUSE DEAL 20x22-1/4x1 Pleated MERV 10

    $154.61
    $154.61 $211.99
    Case of 12 $12.88/filter
  • WAREHOUSE DEAL 20x22x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter 10055.012022 (12 Filters)
    MERV 1-4Up to $16.11 offContact Support
    AAF Flanders

    WAREHOUSE DEAL 20x22x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter

    $59.88
    $59.88 $75.99
    Case of 12 $4.99/filter
  • 20x22x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10Up to $20.01 off
    AAF Flanders

    WAREHOUSE DEAL 20x22x1 NaturalAire Microparticle MERV 10

    Only 1 left
    $119.99
    $119.99 $140.00
    Case of 7 $17.14/filter
  • WAREHOUSE DEAL 20x23x1 Exact Filters Pleated MERV 11 (12 pack)
    MERV 11Up to $57.11 off
    Exact Filters

    WAREHOUSE DEAL 20x23x1 Pleated MERV 11

    Only 1 left
    $178.88
    $178.88 $235.99
    Case of 12 $14.91/filter
  • PerfectPleat HC M8 Filter
    Up to $20.11 off
    AAF Flanders

    WAREHOUSE DEAL 20x25x1 PerfectPleat MERV 8 High Capacity

    Only 1 left
    $89.88
    $89.88 $109.99
    Case of 12 $7.49/filter
  • 20x25x1 Koch Multi-Pleat XL8 Standard Capacity MERV 8 102-700-009 (12 Filters)
    MERV 8Up to $21.11 offContact Support
    Koch

    WAREHOUSE DEAL 20x25x1 Multi-Pleat XL8 MERV 8 Standard Capacity

    $84.88
    $84.88 $105.99
    Case of 12 $7.07/filter
  • WAREHOUSE DEAL 20x30x1 AAF Flanders PREpleat LPD MERV 10 Standard Capacity (12 Filters)
    MERV 10Up to $16.11 offContact Support
    AAF Flanders

    WAREHOUSE DEAL 20x30x1 PREpleat LPD MERV 10 Standard Capacity

    $89.88
    $89.88 $105.99
    Case of 12 $7.49/filter
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HVAC Filter Warehouse Deals

Deep-discount warehouse clearance on HVAC filters. Overstock, end-of-run SKUs, slightly-imperfect packaging, and quantities we need to move. Every warehouse-deal filter ships from the same warehouse as our regular stock and carries the same Filter Fit Guarantee—the only difference is the price and the fact that these aren't going to restock when they sell out.

How Warehouse Deals Work

  • Limited quantities — once a size is gone, we typically don't reorder at this price
  • Same filters, same quality — full product line, no seconds or damaged goods
  • Free shipping still applies on orders over $50
  • No subscription on deeply discounted SKUs — these are one-time purchases only

Check back periodically—the collection rotates as we close out old SKUs and bring in new inventory.