Collection: Furnace Filters
Furnace filters trap dust and allergens to keep your air clean and system running efficiently.
Shop easy-to-install filters for better airflow and everyday home comfort.
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Filter King 7x17.5x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters, MADE IN USA, HVAC, Pleated, Electrostatic (Actual Size: 7 x 17.5 x .75)
Regular price $106.50 USDRegular priceSale price $106.50 USD -
Filter King 8.5x33x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters, MADE IN USA, HVAC, Pleated, Electrostatic (Actual Size: 8.5 x 33 x .75)
Regular price $115.39 USDRegular priceSale price $115.39 USD -
Filter King 40x48x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters, MADE IN USA, HVAC, Pleated, Electrostatic (Actual Size: 40 x 48 x .75)
Regular price $294.85 USDRegular priceSale price $294.85 USD -
Filter King 8.5x48.5x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters, MADE IN USA, HVAC, Pleated, Electrostatic (Actual Size: 8.5 x 48.5 x .75)
Regular price $142.08 USDRegular priceSale price $142.08 USD -
Filter King 4x47.5x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters, MADE IN USA, HVAC, Pleated, Electrostatic (Actual Size: 4 x 47.5 x .75)
Regular price $115.39 USDRegular priceSale price $115.39 USD -
Filter King 8.5x17x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters, MADE IN USA, HVAC, Pleated, Electrostatic (Actual Size: 8.5 x 17 x .75)
Regular price $105.66 USDRegular priceSale price $105.66 USD -
Filter King 28x29.5x2 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters, MADE IN USA, HVAC, Pleated, Electrostatic (Actual Size: 28x29.5x2)
Regular price $226.24 USDRegular priceSale price $226.24 USD -
Filter King 37.5x29.5x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters, MADE IN USA, HVAC, Pleated, Electrostatic (Actual Size: 37.5 x 29.5 x .75)
Regular price $209.47 USDRegular priceSale price $209.47 USD -
Filter King 39.5x26x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters, MADE IN USA, HVAC, Pleated, Electrostatic (Actual Size: 39.5 x 26 x .75)
Regular price $209.47 USDRegular priceSale price $209.47 USD -
Filter King 37.5x64x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters, MADE IN USA, HVAC, Pleated, Electrostatic (Actual Size: 37.5 x 64 x .75)
Regular price $318.14 USDRegular priceSale price $318.14 USD -
Filter King 40x28x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters, MADE IN USA, HVAC, Pleated, Electrostatic (Actual Size: 40 x 28 x .75)
Regular price $239.74 USDRegular priceSale price $239.74 USD -
Filter King 9x41.5x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters, MADE IN USA, HVAC, Pleated, Electrostatic (Actual Size: 9 x 41.5 x .75)
Regular price $115.39 USDRegular priceSale price $115.39 USD -
Filter King 23x25x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters, MADE IN USA, HVAC, Pleated, Electrostatic (Actual Size: 23 x 25 x .75)
Regular price $101.95 USDRegular priceSale price $101.95 USD -
Filter King 36x38.5x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters, MADE IN USA, HVAC, Pleated, Electrostatic (Actual Size: 36 x 38.5 x .75)
Regular price $293.12 USDRegular priceSale price $293.12 USD -
Filter King 7.5x38.5x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters, MADE IN USA, HVAC, Pleated, Electrostatic (Actual Size: 7.5 x 38.5 x .75)
Regular price $115.39 USDRegular priceSale price $115.39 USD -
Filter King 38x30.5x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters, MADE IN USA, HVAC, Pleated, Electrostatic (Actual Size: 38 x 30.5 x .75)
Regular price $239.74 USDRegular priceSale price $239.74 USD