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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  • 19-7/8x21-1/4x1 Exact Filters Fiberglass MERV 1-4 (12 pack)
    MERV 1-4Up to $20 off
    Exact Filters

    19-7/8x21-1/4x1 Fiberglass MERV 1-4

    Only 1 left
    $163.99
    $163.99 $183.99
    Case of 12 $13.67/filter
  • WAREHOUSE DEAL 10x10x1 AAF Flanders PREpleat LPD MERV 10 Standard Capacity (12 Filters)
    MERV 10Up to $39.11 off
    AAF Flanders

    WAREHOUSE DEAL 10x10x1 PREpleat LPD MERV 10 Standard Capacity

    Only 3 left
    $64.88
    $64.88 $103.99
    Case of 12 $5.41/filter
  • Custom filters
    Built to your exact size

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

    Build your filter
  • 10x20x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10Up to $48 offContact Support
    AAF Flanders

    WAREHOUSE DEAL 10x20x1 NaturalAire Microparticle MERV 10

    $89.99
    $89.99 $137.99
    Case of 12 $7.50/filter
  • 10x20x1 NaturalAire Standard MERV 8 Filters (12 pack)
    MERV 8Up to $30.76 offContact Support
    AAF Flanders

    WAREHOUSE DEAL 10x20x1 NaturalAire Standard MERV 8

    $59.99
    $59.99 $90.75
    Case of 11 $5.45/filter
  • 10x24x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10Up to $12.67 off
    AAF Flanders

    WAREHOUSE DEAL 10x24x1 NaturalAire Microparticle MERV 10

    Only 1 left
    $24.99
    $24.99 $37.66
    Case of 2 $12.50/filter
  • WAREHOUSE DEAL 10x28-1/2x1 Exact Filters Pleated MERV 10 (12 pack)
    MERV 10Up to $89.02 off
    Exact Filters

    WAREHOUSE DEAL 10x28-1/2x1 Pleated MERV 10

    Only 1 left
    $105.97
    $105.97 $194.99
    Case of 12 $8.83/filter
  • 11-1/2x11-1/2x1 NaturalAire Standard MERV 8 Filters (12 pack)
    MERV 8Up to $27.11 off
    AAF Flanders

    WAREHOUSE DEAL 11-1/2x11-1/2x1 NaturalAire Standard MERV 8

    Only 1 left
    $118.88
    $118.88 $145.99
    Case of 12 $9.91/filter
  • WAREHOUSE DEAL 12-7/8x21-1/2x1 Exact Filters Pleated MERV 10 (12 pack)
    MERV 10Up to $57.17 off
    Exact Filters

    WAREHOUSE DEAL 12-7/8x21-1/2x1 Pleated MERV 10

    Only 1 left
    $144.82
    $144.82 $201.99
    Case of 12 $12.07/filter
  • WAREHOUSE DEAL 12x20x1 Flanders Nested Glass EZ-Green Filter (24 Filters)
    MERV 1-4Up to $35.11 offContact Support
    AAF Flanders

    WAREHOUSE DEAL 12x20x1 Flanders Nested Glass EZ-Green Filter

    $79.88
    $79.88 $114.99
    Case of 24 $3.33/filter
  • 12x20x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    Up to $79.21 off
    AAF Flanders

    WAREHOUSE DEAL 12x20x1 NaturalAire Healthy Ultra MERV 13

    Only 1 left
    $129.99
    $129.99 $209.20
    Case of 10 $13.00/filter
  • WAREHOUSE DEAL 12x24x1 Flanders Nested Glass EZ-Green Filter (24 Filters)
    MERV 1-4Contact Support
    AAF Flanders

    WAREHOUSE DEAL 12x24x1 Flanders Nested Glass EZ-Green Filter

    $114.99
    $114.99
    Case of 24 $4.79/filter
  • 12x24x1 Koch Multi-Pleat XL8 Standard Capacity MERV 8 102-700-002 (12 Filters)
    MERV 8Up to $15.11 off
    Koch

    WAREHOUSE DEAL 12x24x1 Multi-Pleat XL8 MERV 8 Standard Capacity

    Only 1 left
    $89.88
    $89.88 $104.99
    Case of 12 $7.49/filter
  • 12x24x1 NaturalAire Standard MERV 8 Filters (12 pack)
    MERV 8Up to $20.11 offContact Support
    AAF Flanders

    WAREHOUSE DEAL 12x24x1 NaturalAire Standard MERV 8

    $79.88
    $79.88 $99.99
    Case of 12 $6.66/filter
  • Flanders AAF Pleated Filter 12x24x12 Flanders Precisionaire Rigid Air Filters PRP65S2412 - 2 Filters
    Up to $80.11 off
    AAF Flanders

    WAREHOUSE DEAL 12x24x12 Flanders Precisionaire Rigid Air Filters PRP65S2412

    Only 1 left
    $249.88
    $249.88 $329.99
    Case of 2 $124.94/filter
  • 709-124-210
    Up to $111.23 off
    AAF Flanders

    WAREHOUSE DEAL 12x24x21 DriPak 2000 MERV 15

    $81.76
    $81.76 $192.99
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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.