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 37.5x39x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters, MADE IN USA, HVAC, Pleated, Electrostatic (Actual Size: 37.5 x 39 x .75)
Regular price $263.81 USDRegular priceSale price $263.81 USD -
Filter King 36.5x36x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters, MADE IN USA, HVAC, Pleated, Electrostatic (Actual Size: 36.5 x 36 x .75)
Regular price $256.06 USDRegular priceSale price $256.06 USD -
Filter King 38.5x47.5x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters, MADE IN USA, HVAC, Pleated, Electrostatic (Actual Size: 38.5 x 47.5 x .75)
Regular price $337.54 USDRegular priceSale price $337.54 USD -
Filter King 39.5x45x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters, MADE IN USA, HVAC, Pleated, Electrostatic (Actual Size: 39.5 x 45 x .75)
Regular price $310.85 USDRegular priceSale price $310.85 USD -
Filter King 8x15.5x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters, MADE IN USA, HVAC, Pleated, Electrostatic (Actual Size: 8 x 15.5 x .75)
Regular price $105.66 USDRegular priceSale price $105.66 USD -
Filter King 8x46x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters, MADE IN USA, HVAC, Pleated, Electrostatic (Actual Size: 8 x 46 x .75)
Regular price $104.90 USDRegular priceSale price $104.90 USD -
Filter King 39.5x4.5x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters, MADE IN USA, HVAC, Pleated, Electrostatic (Actual Size: 39.5 x 4.5 x .75)
Regular price $100.80 USDRegular priceSale price $100.80 USD -
Filter King 5.5x48.5x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters, MADE IN USA, HVAC, Pleated, Electrostatic (Actual Size: 5.5 x 48.5 x .75)
Regular price $115.39 USDRegular priceSale price $115.39 USD -
Filter King 38.5x5x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters, MADE IN USA, HVAC, Pleated, Electrostatic (Actual Size: 38.5 x 5 x .75)
Regular price $115.39 USDRegular priceSale price $115.39 USD -
Filter King 6.5x20.5x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters, MADE IN USA, HVAC, Pleated, Electrostatic (Actual Size: 6.5 x 20.5 x .75)
Regular price $106.50 USDRegular priceSale price $106.50 USD -
Filter King 7.5x20.5x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters, MADE IN USA, HVAC, Pleated, Electrostatic (Actual Size: 7.5 x 20.5 x .75)
Regular price $105.66 USDRegular priceSale price $105.66 USD -
Filter King 5.5x36.5x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters, MADE IN USA, HVAC, Pleated, Electrostatic (Actual Size: 5.5 x 36.5 x .75)
Regular price $115.39 USDRegular priceSale price $115.39 USD -
Filter King 6.5x59.5x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters, MADE IN USA, HVAC, Pleated, Electrostatic (Actual Size: 6.5 x 59.5 x .75)
Regular price $115.39 USDRegular priceSale price $115.39 USD -
Filter King 37.5x30x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters, MADE IN USA, HVAC, Pleated, Electrostatic (Actual Size: 37.5 x 30 x .75)
Regular price $209.47 USDRegular priceSale price $209.47 USD -
Filter King 36.5x28.5x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters, MADE IN USA, HVAC, Pleated, Electrostatic (Actual Size: 36.5 x 28.5 x .75)
Regular price $209.47 USDRegular priceSale price $209.47 USD -
Filter King 39.5x50x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters, MADE IN USA, HVAC, Pleated, Electrostatic (Actual Size: 39.5 x 50 x .75)
Regular price $294.85 USDRegular priceSale price $294.85 USD