Air Conditioning Filters

These 16.5x21.625x1 air filters are right-sized for your needs. Choose the MERV rating that suits your lifestyle and breathe cleaner air.

Built for HVAC returns calling for a nominal 10x20x1, this Aerostar filter measures an actual 9 1/2" x 19 1/2" x 3/4". The smaller actual size is intentional and standard across the filter industry, giving the filter room to slide into the grille without binding. Pick your MERV based on what you're actually trying to catch. MERV 8 covers everyday dust, lint, and pollen at the lowest airflow resistance. MERV 11 handles pet dander, smoke, and most household allergens. MERV 13 traps fine particulat

The Aerostar 14x24x1 pleated air filter delivers clean air by replacing your air system's vent intake filter. Designed to work with most home and office AC and furnace systems with compatible intake vent sizes, filtering out dust, pollen, bacteria, and other airborne particles. Great indoor air quality is as easy as changing your air filter to Aerostar.

Air-Care electrostatic, reusable, permanent, washable air filters are 10 times more efficient than the standard disposable filter. By switching to a permanent electrostatic filter, the air inside your home will be cleaner and fresher. Utilizing electrostatically charged material which traps up to 94% of the dust and allergens in your home. The air you breathe contains many irritants such as pollen, dust, mold spores, pet dander and smoke additionally filtering other debris which can effect the air and your family’s health, including allergies and asthma. Most of these particles are smaller than one micron. Electrostatic air filters clean the air by using static electricity, a safe, naturally oc…

Air-Care electrostatic, reusable, permanent, washable air filters are 10 times more efficient than the standard disposable filter. By switching to a permanent electrostatic filter, the air inside your home will be cleaner and fresher. Utilizing electrostatically charged material which traps up to 94% of the dust and allergens in your home. The air you breathe contains many irritants such as pollen, dust, mold spores, pet dander and smoke additionally filtering other debris which can effect the air and your family’s health, including allergies and asthma. Most of these particles are smaller than one micron. Electrostatic air filters clean the air by using static electricity, a safe, naturally oc…

Air-Care electrostatic, reusable, permanent, washable air filters are 10 times more efficient than the standard disposable filter. By switching to a permanent electrostatic filter, the air inside your home will be cleaner and fresher. Utilizing electrostatically charged material which traps up to 94% of the dust and allergens in your home. The air you breathe contains many irritants such as pollen, dust, mold spores, pet dander and smoke additionally filtering other debris which can effect the air and your family’s health, including allergies and asthma. Most of these particles are smaller than one micron. Electrostatic air filters clean the air by using static electricity, a safe, naturally oc…

Air-Care electrostatic, reusable, permanent, washable air filters are 10 times more efficient than the standard disposable filter. By switching to a permanent electrostatic filter, the air inside your home will be cleaner and fresher. Utilizing electrostatically charged material which traps up to 94% of the dust and allergens in your home. The air you breathe contains many irritants such as pollen, dust, mold spores, pet dander and smoke additionally filtering other debris which can effect the air and your family’s health, including allergies and asthma. Most of these particles are smaller than one micron. Electrostatic air filters clean the air by using static electricity, a safe, naturally oc…

Air-Care electrostatic, reusable, permanent, washable air filters are 10 times more efficient than the standard disposable filter. By switching to a permanent electrostatic filter, the air inside your home will be cleaner and fresher. Utilizing electrostatically charged material which traps up to 94% of the dust and allergens in your home. The air you breathe contains many irritants such as pollen, dust, mold spores, pet dander and smoke additionally filtering other debris which can effect the air and your family’s health, including allergies and asthma. Most of these particles are smaller than one micron. Electrostatic air filters clean the air by using static electricity, a safe, naturally oc…

Air-Care electrostatic, reusable, permanent, washable air filters are 10 times more efficient than the standard disposable filter. By switching to a permanent electrostatic filter, the air inside your home will be cleaner and fresher. Utilizing electrostatically charged material which traps up to 94% of the dust and allergens in your home. The air you breathe contains many irritants such as pollen, dust, mold spores, pet dander and smoke additionally filtering other debris which can effect the air and your family’s health, including allergies and asthma. Most of these particles are smaller than one micron. Electrostatic air filters clean the air by using static electricity, a safe, naturally oc…

The Aerostar 20x25x4 commercial HVAC air filter is ready to filter the air in your home or office. Choose the MERV rating that suits your lifestyle and start filtering cleaner air through your air conditioning or furnace system.

The Aerostar 16x25x4 commercial HVAC air filter is ready to filter the air in your home or office. Choose the MERV rating that suits your lifestyle and start filtering cleaner air through your air conditioning or furnace system.

The Aerostar 16x25x2 pleated air filter delivers clean air by replacing your air system's vent intake filter. Designed to work with most home and office AC and furnace systems with compatible intake vent sizes, filtering out dust, pollen, bacteria, and other airborne particles. Great indoor air quality is as easy as changing your air filter to Aerostar.

At 19 3/4" x 35 3/4" x 3/4" actual, the 20x36x1 Aerostar fits a nominal 20x36x1 return. Long-rectangle returns in this size show up on larger residential air handlers and some commercial applications. Three MERV grades cover the standard residential range. MERV 8 for baseline household dust and pollen filtration - the standard choice without pets or specific allergy concerns. MERV 11 for pet households, smoke residue, and most common allergens. MERV 13 for fine particulate capture including bact

The Aerostar 20x20x4 commercial HVAC air filter is ready to filter the air in your home or office. Choose the MERV rating that suits your lifestyle and start filtering cleaner air through your air conditioning or furnace system.

Replacement filter Blueair DustMagnet 5400

The Aerostar 14x16x1 pleated air filter delivers clean air by replacing your air system's vent intake filter. Designed to work with most home and office AC and furnace systems with compatible intake vent sizes, filtering out dust, pollen, bacteria, and other airborne particles. Great indoor air quality is as easy as changing your air filter to Aerostar.

Need a 12x20x1 that actually fits your return? This Aerostar comes in at 11 1/2" x 19 1/2" x 3/4", matching the real opening in most furnace and air handler returns where a nominal 12x20x1 is specified. The half-inch undersize on each dimension is industry standard and keeps the filter from wedging in the grille track. Three MERV options let you match the filter to what your household actually needs. MERV 8 covers basic dust, pollen, and lint at the lowest static pressure. MERV 11 captures pet d

A 21 1/2 x 23 3/8 x 1 nominal return takes a filter sized at 21 1/2" x 23 3/8" x 3/4" actual, which this Aerostar matches exactly. Custom and semi-custom HVAC installations spec dimensions like this when the original return opening doesn't conform to a standard nominal size. MERV 8 covers baseline residential filtration: dust, pollen, lint. MERV 11 handles pet households and mild allergy concerns. MERV 13 captures fine particulates including bacteria, virus carriers, and wildfire smoke - the gra

A 16x20x4 fits a deep return cabinet - usually a media filter housing like an Aprilaire, Honeywell, or similar whole-house setup. This Aerostar measures 15 1/2" x 19 1/2" x 3 3/4" actual, sized for both commercial and residential applications. The 4-inch depth is where 1-inch filters can't compete: substantially more pleated media, much lower pressure drop, and a service life measured in months rather than weeks. Three MERV grades cover the typical range. MERV 8 for baseline household and light

The 16 1/4 x 21 1/2 x 1 Aerostar is sized for a nominal opening that's one of the harder filter dimensions to source through retail channels. Actual size is 16 1/2" x 21 1/2" x 3/4". Custom and semi-custom HVAC installations often spec dimensions like this where the return opening doesn't match a standard nominal size. Three MERV grades cover the residential range. MERV 8 for baseline dust, lint, and pollen filtration. MERV 11 for pet households and mild allergy concerns. MERV 13 for fine partic

The 14x18x1 Aerostar fits a nominal 14x18x1 return at an actual size of 13 3/4" x 17 3/4" x 3/4". Choose your MERV based on the air quality concern you're actually solving for. MERV 8 covers baseline dust, lint, and pollen for standard households without pets or allergy issues. MERV 11 handles pet dander, mold spores, and smoke residue - the typical step-up for homes with cats or dogs. MERV 13 captures fine particulates down to the virus-carrier range, which matters during wildfire season or for

The 24x30x1 Aerostar fits a nominal 24x30x1 return at 23 7/8" x 29 7/8" x 3/4" actual. Larger-residential and small-commercial returns in this size show up on furnaces serving 2,500-plus square foot homes and on some compact commercial air handlers. MERV 8 covers baseline residential filtration: dust, lint, pollen. MERV 11 captures pet dander, smoke residue, and most common household allergens. MERV 13 handles fine particulates including bacteria, virus carriers, and wildfire smoke - the grade t

At a true 21 1/2" x 21 1/2" x 3/4", the 21 1/2 x 21 1/2 x 1 Aerostar fits a nominal opening that measures the same in both nominal and actual dimensions - unusual in the filter industry. This is a custom-spec size used in certain regional HVAC markets. MERV 8 handles standard residential dust and pollen filtration. MERV 11 covers pet households and most common allergen concerns. MERV 13 captures fine particulates including smoke, bacteria, and virus-carrying droplets - the grade for households w

The Aerostar 16x21x1 pleated air filter delivers clean air by replacing your air system's vent intake filter. Designed to work with most home and office AC and furnace systems with compatible intake vent sizes, filtering out dust, pollen, bacteria, and other airborne particles. Great indoor air quality is as easy as changing your air filter to Aerostar.