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Furnace Air Filter Replacements

Air filters and furnace air filters help keep your air clean and reduce dust and pollen in your air.

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  1. Tier1 600 Air Filter - 21-1/2 x 23-1/2 x 1 (6-Pack)
    Tier1 600 Air Filter - 21-1/2 x 23-1/2 x 1 (6-Pack)

    Tier1 21-1/2 x 23-1/2 x 1 MERV 8 - 6 Pack Air Filters (P85S-6121H23H)

    Price $106.99 List Price Price $152.99 Save 30%
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  2. Tier1 21-1/2 x 23-1/2 x 1 MERV 13 - 6 Pack Air Filters (P25S-6121H23H)
    Tier1 21-1/2 x 23-1/2 x 1 MERV 13 - 6 Pack Air Filters (P25S-6121H23H)

    Tier1 21-1/2 x 23-1/2 x 1 MERV 13 - 6 Pack Air Filters (P25S-6121H23H)

    Price $137.99 List Price Price $196.99 Save 29%
    Free Shipping
    1 Pack Selected

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  1. Advertised Size (in) 21-1/2 x 23-1/2 x 1
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