Air Conditioning Filters

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.

These 12.5x28.5x1 air filters are right-sized for your needs. Choose the MERV rating that suits your lifestyle and breathe cleaner air.

These 15.75x27.25x1 air filters are right-sized for your needs. Choose the MERV rating that suits your lifestyle and breathe cleaner air.

These 22.875x25.875x1 air filters are right-sized for your needs. Choose the MERV rating that suits your lifestyle and breathe cleaner air.

These 23.75x25x1 air filters are right-sized for your needs. Choose the MERV rating that suits your lifestyle and breathe cleaner air.

These 22.5x28x1 air filters are right-sized for your needs. Choose the MERV rating that suits your lifestyle and breathe cleaner air.

These 22.375x25x1 air filters are right-sized for your needs. Choose the MERV rating that suits your lifestyle and breathe cleaner air.

These 10x12x1 air filters are right-sized for your needs. Choose the MERV rating that suits your lifestyle and breathe cleaner air.

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.

These 12.125x15x1 air filters are right-sized for your needs. Choose the MERV rating that suits your lifestyle and breathe cleaner air.

A 21x23x1 nominal opening is one of those odd sizes that retail stores don't stock, which is why most homeowners end up ordering direct. This Aerostar measures 20 7/8" x 22 7/8" x 3/4" actual, built to fit the nominal 21x23x1 grille without binding or air bypass. MERV 8 covers standard residential filtration: dust, lint, pollen. MERV 11 steps up for pet households or homes with mild allergy concerns. MERV 13 captures fine particulates including bacteria, virus carriers, and wildfire smoke - the

The Aerostar 20x24x1 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.

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.

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

At an actual 21 1/2" x 23 1/2" x 3/4", the 21 1/2 x 23 1/2 x 1 Aerostar fits a custom-spec nominal opening common in certain regional HVAC markets. MERV 8 covers standard household filtration: dust, lint, pollen. MERV 11 handles pet households and most common allergens. MERV 13 captures fine particulates including bacteria, virus-carrying droplets, and wildfire smoke - the grade to choose for households with respiratory health issues. Pleated synthetic media with an electrostatic charge built in

Blueair 200 Series DualProtection Filter

Anti-Allergen HEPA Filter with Advanced Odor Lock captures 99.97% down to 0.3 microns from the air and is equipped with carbon for heightened protection against household odors, VOCs, and fumes such as formaldehyde found in plants, furniture, and flooring. Compatible with: HE601, HE601C, HE602, HE602C, HE602NP, HE612 ANTI-ALLERGEN HEPA MULTI-FILTER: Shark’s Anti-Allergen NANOSEAL Filter with true HEPA and Advanced Odor Lock & Fumes Lock captures 99.98% of large, small, & micro-sized particles. Based on IEST-RP-CC007.3, 0.1-0.2 microns.HEIGHTENED ODOR PROTECTION: An advanced odor guard on the filter protects against household odors, VOCs, and fumes such as formaldehyde found in plants, furniture, a…

These 12x36x2 air filters are right-sized for your needs. Choose the MERV rating that suits your lifestyle and breathe cleaner air.

At 17 3/4" x 29 3/4" x 3/4" actual, the 18x30x1 Aerostar fits a nominal 18x30x1 return. Long-rectangle returns like this are typical on older furnace cabinets and some horizontal air handlers. Three MERV grades cover the residential range. MERV 8 is your baseline - dust, lint, pollen, no special filtration requirements. MERV 11 steps up for pet households or homes with mild allergy concerns. MERV 13 captures fine particulates including smoke, bacteria, and virus carriers, the grade to pick for h

A nominal 20x21x1 return takes a filter at 19 7/8" x 20 7/8" x 3/4" actual. Odd-sized returns like this show up where the original equipment installer used a non-standard grille opening, which is common in custom builds and certain regional HVAC markets. This Aerostar is built to the actual spec without adjustment, so it'll seat properly without forcing or wedging the frame. MERV 8 covers standard household filtration for dust, lint, and pollen. MERV 11 steps up for pet households or homes with

These 10x24x2 air filters are right-sized for your needs. Choose the MERV rating that suits your lifestyle and breathe cleaner air.

These 12x18x2 air filters are right-sized for your needs. Choose the MERV rating that suits your lifestyle and breathe cleaner air.

These 12.25x15x2 air filters are right-sized for your needs. Choose the MERV rating that suits your lifestyle and breathe cleaner air.

The 10x10x1 Aerostar pleated filter ships at an actual size of 9 1/2" x 9 1/2" x 3/4", which is the trade-standard undersize for a nominal 10x10x1 return. That gap matters: a true 10-inch filter won't seat in a 10-inch grille, and an oversized one tears its frame trying. Three MERV grades cover the typical residential range. MERV 8 handles standard dust, lint, and pollen for households without specific air quality concerns. MERV 11 steps up for pet dander, mold spores, and finer dust if you've g