4 Inch Air Filter
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GermGuardian - FLT200 Allergen Genuine Replacement Filter for AP201/AC225 Air Purifiers, 4-Pack - White
SKU: J3LFVTSZFHSee all Air Purifier Filters & PartsProduct Description
A white allergen and carbon filter 4-pack that captures particles and reduces odors for select air purifiers.Your price for this item is $19.99 -
VEVOR - 16 x 28 x 4 Furnace Filter, MERV 13 HVAC Ac Filters,12-Month Electrostatic Pleated Air Conditioner Filters - Black and White
SKU: JJGHK4WZTPSee all FiltersProduct Description
A black and white electrostatic cotton filter that captures fine particles and reduces air leaks for cleaner air.Your price for this item is $62.90Save $7The previous price was $69.99 -
Pure Enrichment - 2-in-1 True HEPA Replacement Filter for the PureZone Elite 4-in-1 Air Purifier (PEAIRTWR) - Gray
SKU: J3LF7PKGHXThanks for filters that improve our air and quality of sleep!...This filter completely cleans the air throughout the room. ...Great Filter for Cleaner Air & Better Sleep!...PureZone Elite makes Air Smell...
See all Air Purifier Filters & PartsProduct Description
A grey 2-in-1 filter with True HEPA and activated carbon layers for cleaner, allergen-free air.Your price for this item is $29.99 -
Flanders - 20 in. W X 20 in. H X 4.5 in. D Synthetic 8 MERV Pleated Air Cleaner Cartridge 1 pk
SKU: J7334RFPC3See all Air Purifier Filters & PartsProduct Description
A synthetic pleated air cleaner cartridge with MERV 8 rating captures dust, pollen, and some bacteria.Your price for this item is $91.06Save $79The previous price was $170.70 -
VEVOR - 16 x 28 x 4 Furnace Filter, MERV 11 HVAC Ac Filters,12-Month Electrostatic Pleated Air Conditioner Filters - Black and White
SKU: JJGHK4WZT2See all FiltersProduct Description
A black and white electrostatic cotton filter that captures fine particles and pollen for cleaner indoor air.Your price for this item is $60.90Save $7The previous price was $67.99
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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.