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4 Inch Air Filter

Browse the top-ranked list of 4 inch air filter below along with associated reviews and opinions.

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  1. GermGuardian - FLT200 Allergen Genuine Replacement Filter for AP201/AC225 Air Purifiers, 4-Pack - White

    SKU: J3LFVTSZFH

    Works great! Reduces odors and dust. Works great with pets....All the filter I get from you work greatThank you , Norma

    Product Description

    A white allergen and carbon filter 4-pack that captures particles and reduces odors for select air purifiers.
    See all Air Purifier Filters & Parts
    Your price for this item is $19.99

  2. Filterbuy - 12x12x4 MERV 8 Dust & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (12-Pack) - Silver

    SKU: JXT9F2ZL9H

    Fast and courteous service with a great product.

    Product Description

    An electrostatic silver polypropylene air filter that traps 90% of dust and allergens for cleaner indoor air.
    See all Furnace Filters
    Your price for this item is $189.96

  3. Filtrete - 20 in. W X 25 in. H X 4 in. D Pleated 1000 MPR Pleated Allergen Air Filter 1 pk

    SKU: J799R7TW92

    Best Filters...Great filter!Good airflow and filtration.Best ever tried.Easy to install....Great product for the money....I use 4 different sizes of these throughout the house & they all work great at...

    Product Description

    A pleated electrostatic air filter with MERV 11 rating that captures dust, pollen, and pet dander.
    See all Furnace Filters
    Your price for this item is $208.64

  4. Filtrete - Slim 16 in. W X 25 in. H X 4 in. D Polyester 1550 MPR Pleated Allergen Air Filter 1 pk

    SKU: J799R7TWWX

    Love that i switched!...I was using the regular version of filters and they worked but weren't the best for our house....Great Filter

    Product Description

    A pleated polyester air filter with MERV 12 rating that captures allergens and particles as small as 0.3 microns.
    See all Furnace Filters
    Your price for this item is $193.72
    Save $7
    The previous price was $200.96

  5. VEVOR - 16 x 28 x 4 Furnace Filter, MERV 11 HVAC Ac Filters,12-Month Electrostatic Pleated Air Conditioner Filters - Black and White

    SKU: JJGHK4WZT2

    Product Description

    A black and white electrostatic cotton filter that captures fine particles and pollen for cleaner indoor air.
    See all Lens Filters
    Your price for this item is $60.90
    Save $16
    The previous price was $76.99

  6. Filterbuy - 12x15x4 MERV 8 Dust & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (2-Pack) - Silver

    SKU: JXT9F2QTKC

    Love the sizes available had...Love the sizes available had a very hard time finding filters to fit 30 x 30 was taping 2 15 x 30 together...this has been great for usThanks filter buy...Best MERV 8 Filter...This...

    Product Description

    A silver electrostatic pleated air filter made of polypropylene, trapping 90% of dust and allergens.
    See all Furnace Filters
    Your price for this item is $50.98

  7. Filterbuy - 8x14x4 MERV 8 Dust & Allergy Defense, Electrostatic Pleated HVAC AC Furnace Air Filters Replacement (4-Pack) - Silver

    SKU: JXT9FXCCXJ

    Product Description

    An electrostatic pleated HVAC filter in silver polypropylene traps 90% of dust and allergens efficiently.
    See all Furnace Filters
    Your price for this item is $84.96

  8. Flanders - 20 in. W X 20 in. H X 4.5 in. D Synthetic 8 MERV Pleated Air Cleaner Cartridge 1 pk

    SKU: J7334RFPC3

    Product Description

    A synthetic pleated air cleaner cartridge with MERV 8 rating captures dust, pollen, and some bacteria.
    See all Furnace Filters
    Your price for this item is $91.06
    Save $79
    The previous price was $170.70
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FAQ

4 inch air filters are compatible with a wide range of residential and commercial HVAC systems, including furnaces, air conditioners, and heat pumps that have filter slots designed for 4 inch thick filters. Always check your system's specifications to ensure compatibility.

A 4 inch air filter has a larger surface area compared to thinner filters, allowing it to capture more airborne particles such as dust, pollen, pet dander, and mold spores, which helps maintain cleaner indoor air.

Yes, 4 inch air filters come in a variety of MERV ratings, allowing you to choose the level of filtration that best suits your needs—from basic dust control to advanced allergen and particle filtration.

Absolutely. 4 inch air filters with higher MERV ratings are effective at trapping common allergens like pollen, pet dander, and dust mites, helping to create a healthier environment for allergy sufferers.

It's recommended to check your 4 inch air filter every 3 to 6 months, depending on factors such as household occupancy, pets, and local air quality. Regular inspections ensure optimal HVAC performance and air quality.