Best Aerostar Furnace Filters in 2026

OUTPERFORMS FIBERGLASS, WASHABLE AND NON-ELECTROSTATIC 3-month pleated 1 in. home air filters for your furnace, air conditioner or HVAC system

DESIGNED WITH EXCLUSIVE Filtrete Brand 3-in-1 technology from 3M to trap unwanted air particles while letting cleaner air flow through

ATTRACTS AND CAPTURES particles such as lint, pollen, dust, pet dander, smoke and smog

BUY WITH CONFIDENCE This genuine AprilAire 213 replacement air filter was designed and manufactured in the USA by AprilAire – the leader in indoor air quality solutions – to optimize the performance of your AprilAire Air Purifier Model: 1210, 1620, 2210, 2216, 3210, 4200, AprilAire or Space Gard 2200 with upgrade kit

CREATE A HEALTHIER HOME by preventing airborne allergens from circulating through the air in your home. The 213 AprilAire replacement air filter removes airborne allergens as they pass through the MERV 13 filter including dust pollen, mold spores, bacteria, pet dander, and dust mites

BETTER PERFORMANCE thanks to the patented AprilAire Self-Seal Technology which minimizes the amount of air bypassing the filter

The higher the MPR, the more microparticles--such as pollen, pet dander, smoke, bacteria and viruses--your filter will capture from the air passing through it

FOR OPTIMAL PERFORMANCE of your heating & cooling system or HVAC system, change your home air filter at least every 90 days for 1 in. filters

A dirty filter will slow down air flow and make the system work harder to keep you warm or cool--wasting energy.

Nominal size: 12x12x1; Actual size: 11 3/4"x11 3/4"x3/4"; This MERV 8 filter is comparable with MPR 600 & FPR 5.

Designed to filter microscopic particles such as lint, dust mites, spores, and pollen

Simple to install and a cost-effective step towards a healthier home environment. For best results, change your filters every 60 to 90 days but increase frequency to 30 days during peak summer and winter months

20x20x1 replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 19.50" x 19.50" x 0.75")

MERV 8 synthetic media (comparable with MPR 600 & FPR 5) protects homes from dust, pollen, and more by trapping 90% of airborne particles without impacting air flow

High-quality construction features an electrostatically charged, pleated design that captures more harmful particles and prolongs the products lifespan by 3 times that of fiberglass models

Nominal size: 20x25x4; Actual size: 19 1/2"x24 1/2"x3 3/4"; This MERV 11 filter is comparable with MPR 1000-1200 & FPR 7.

Designed to filter microscopic particles such as lint, dust mites, spores, pollen, pet dander, fine dust, and smoke

Simple to install and a cost-effective step towards a healthier home environment. Replace 3"-5" filters every 3-6 months.

OUTPERFORMS FIBERGLASS, WASHABLE AND NON-ELECTROSTATIC 3-month pleated 1 in. home air filters for your furnace, air conditioner or HVAC system

DESIGNED WITH EXCLUSIVE Filtrete Brand 3-in-1 technology from 3M to trap unwanted air particles while letting cleaner air flow through

ATTRACTS AND CAPTURES microscopic particles such as smoke, cough and sneeze debris, bacteria and viruses--and large particles, including lint, household dust and pollen

AC/Furnace filter for capturing household irritants, improving air quality, and promoting furnace efficiency; 20 x 30 x 1 inch filters, 6-pack

Merv 11 rating for residential use; comparable to MPR 1000-1200 and FPR 7

Captures allergens between 3-10 microns including lint, dust, and pollen

20x25x1 MERV 13 air filter replacement for your air conditioner, furnace or HVAC system. Actual Size: 19 11/16’’ x 24 11/16’’ x 3/4‘’. Comparable with MPR 1500-1900 & FPR 10. Provides optimal defense with electrostatically charged filter media and industry leading low air flow resistance.

MADE IN USA, SUSTAINABLY - Proudly manufactured by BNX Converting, LLC in Houston, TX, a registered and approved facility (EPA Registration # 101638-TX-1). Adopts single sided (one-piece) frame technology to reduce environmental waste and made sustainably from recycled cardboard.

SUPERIOR PERFORMANCE - The BNX MERV 13 air filter media outperforms standard fiberglass filters and adopts the latest in electrostatic filtration technology to capture maximum pollen, mold bacteria, smoke, carriers & other microscopic particles while maintaining industry leading superior low air flow resistance.

3 Pack of 20x25x4 MERV 8 Air Filters (CF408F1625)

MERV 8 rating-up to 20x more efficient than typical 1 in. fiber glass filter

Captures high percentage of house hold airborne particles, including microscopic particles you can't see

MERV 8 filter captures common allergens for fresher, cleaner air. As Tested per ASHRAE 52.2 MERV testing. This filter does not claim to remove or reduce any living allerge

Captures common allergens such as pollen, dust, lint and more

High-performance pleated design and dual wire backing

Nominal Size: 20 x 25 x 4, Actual Size: 19 1/2 x 24 1/2 x 3 5/8 (19.5 x 24.5 x 3.63)

Measure your air filter for the exact size and compare it to our actual size to ensure proper fit. Made with MERV rated synthetic poly blend pleated media

If you are replacing a Honeywell or Lennox 20x25x4 or an air filter with an MPR rating with an actual depth of 4 3/8, please see our 20x25x5 (4 3/8 actual depth)

Filters out unwanted particles including dust lint, mold particles, pollen, bacteria, and virus carriers while allowing cleaner air to flow through

Designed to perform with high efficiency and minimum pressure drop; conserving energy and lowering costs

Minimum Efficiency Reporting Value (MERV) of 11; generating better filtration with fewer particles and contaminants that pass through the filter

Nominal Size: 21 1/2 x 23 3/8 x 1, Actual Size: 21 1/2" x 23 3/8" x 3/4", 21 1/2x23 3/8x1, AC and Furnace Air Filter

Comparable to MPR 600 Clean Living

Comparable to Honeywell Micro Defense Plus FPR 5