Find all types and brands of HVAC air filters online

Air filters for heating and air conditioning systems. A/C, heat pump, furnace and geothermal HVAC filters for a cleaner system and indoor air.

The links on this page will take you directly to HVAC air filters online.

HVAC air filters online for your air conditioning, heat pump and furnace blower unit and fan coils.

Heating and A/C Air Filters Online

Go to A/C Filters For LessA/C Filters For Less linkA/C Filters For Less:AC Filters or Furnace Filters From AC Filters 4 Less, Buy Now and Save on EZ Flow, Flanders, Glasfloss, Purolator, Trane, Honeywell, Aprilaire, Carrier.
Go to Air Filter USAAir Filter USA linkAir Filter USA:Order Replacement Air Filters Online for Residential or Commercial Air Filtration | Air Filters, Inc.
Go to Air Filters DeliveredAir Filters Delivered linkAir Filters Delivered:Residential Furnace Air Filters available in popular and hard-to-find sizes. Save 10% when you buy a 12pk. No minimum.
Go to American FiltrationAmerican Filtration linkAmerican Filtration:Furnace filters and air conditioning filters for home and commercial systems. American Air Filter distributor. Over 4000 replacement filters and custom made sizes available.
Go to Capital Air FiltersCapital Air Filters linkCapital Air Filters:Capital Air Filters offers discount air filtration products in North Carolina to meet your requirements for clean air and better indoor air quality.
Go to Discount FiltersDiscount Filters linkDiscount Filters:Amazing Deals on Furnace Filters! Breathe cleaner indoor air - New furnace filters help reduce pollutants and odors in your home's air.
Go to Factory Direct FiltersFactory Direct Filters linkFactory Direct Filters:HVAC filters in standard and all hard-to-find sizes at Factory Direct Filters. No minimum order.
Go to Filter EasyFilter Easy linkFilter Easy:FilterEasy delivers the best filters to your door at a price you'll love, exactly when it is time to change them.
Go to Filters-NowFilters-Now linkFilters-Now:Furnace filters and air conditioning filters for all sizes. Order Accumulair, 3M, Honeywell, Aprilaire, Holmes, and more furnace filters any size Air Filters.
Go to FiltreteFiltrete linkFiltrete:Filtrete™ Healthy Living Filters have exclusive Filtrete™ Brand 3-in-1 technology from 3M that pulls in and traps unwanted particles while letting cleaner air flow through to help your home stay cleaner, fresher, healthier. Change your filter today.
Go to Furnace Filter WarehouseFurnace Filter Warehouse linkFurnace Filter Warehouse:Furnace Filter Warehouse is your one stop shop for Furnace Filters, Air Filters, Geothermal Filters, and Humidifier Pads.
Go to IAQSourceIAQSource sells professional grade indoor air quality solutions such as furnace filters & air conditioner filters at rock bottom prices. You'll breathe easier with air quality solutions from
Go to Home DepotHome Depot linkHome Depot:Stock up on air filters, furnace filters and air conditioner filters. We offer a large selection in all sizes and brands, custom and hard-to-find sizes.
Go to U.S. Home FilterU.S. Home Filter linkU.S. Home Filter:U.S. Home Filter is the Midwest's leader in home air filters. Full line of stock air filters and quick shipping custom air filters available.
Go to Your Filter ConnectionYour Filter Connection linkYour Filter Connection:Your Filter Connection is an online distributor of air conditioning, furnace, and humidifier replacement filters. Shop our inventory of over 150 sizes today!

Air Filters By Category

Go to A/C FiltersA/C Filters linkAir Conditioning Filters
Go to Commercial HVAC FiltersCommercial HVAC Filters linkCommercial HVAC Filters
Go to Custom Air FiltersCustom Air Filters linkCustom Air Filters
Go to Electronic Air CleanersElectronic Air Cleaners linkElectronic Air Cleaners
Go to Electrostatic Air FiltersElectrostatic Air Filters linkElectrostatic Air Filters
Go to Furnace FiltersFurnace Filters linkFurnace Filters
Go to Geothermal HVAC FiltersGeothermal HVAC Filters linkGeothermal HVAC Filters
Go to Heat Pump FiltersHeat Pump Filters linkHeat Pump Filters
Go to HEPA Air FiltersHEPA Air Filters linkHEPA Air Filters
Go to ULPA Air FiltersULPA Air Filters linkULPA Air Filters

Air filters also keep your indoor HVAC unit clean

Direct From The Tech...
Air Filters And Outdoor Air Quality

When you think of air filters, you think of indoor air quality. When we purchase an air filter, most of us never consider in where we live and how outdoor air quality affects the indoor air we breathe. Though the EPA's (Environmental Protection Agency) definition of "indoor air quality" varies from ASHRAE's (American Society of Heating, Refrigerating and Air-Conditioning Engineers), both agree it's the health or hypersensitivity of the inhabitants to certain pollutants and contaminates that dictates the air quality and how it affects each person individually. Basically, this means that each person reacts differently to certain pollutants and contaminants. For example, in areas that are high in pollen counts, some people will have allergic reactions to pollen, while others are not affected by the higher levels. Though homes have become more energy-efficient, outdoor pollutants and contaminates can still enter our dwellings. The levels of pollutants and contaminates in our outdoor air quality are environmentally controlled through natural or industrial sources. The first step is the inhabitant's sensitivity to contaminants. Begin with the person in the household who has the strongest reactions to air quality and to what pollutants or contaminants. The second determination on what type of air filter to buy is what you don't want in your indoor air (e.g. dust, dirt, pet dander, allergens, etc., ). Your area's outdoor air quality is the third factor in managing your total indoor air quality. The last step is research. There are many different types of air filtration devices and materials on the market. Some are simply inserted or adapted directly to your HVAC system. Ask questions. There is a right air filter out there for you. Remember, no air filter can eliminate 100% of the contaminates we breathe, but there are ones who can help manage it.

The links on this page will take you to HVAC air filters online.

By Category: HVAC Air Filters

Go to Air Conditioning Air FiltersAir Conditioning Air Filters linkAir Conditioning Air Filters
Go to Commercial HVAC FiltersCommercial HVAC Air Filters linkCommercial HVAC Air Filters
Go to Custom Sized Air FiltersCustom Sized Air Filters linkCustom Sized Air Filters
Go to Electronic Air FiltrationElectronic Air Filtration linkElectronic Air Cleaners
Go to Electrostatic Air FiltrationElectrostatic Air Filtration linkElectrostatic Air Filters
Go to Furnace Air FiltersFurnace Air Filters linkFurnace Air Filters
Go to Geothermal HVAC Air FiltersGeothermal HVAC Air Filters linkGeothermal HVAC Air Filters
Go to Heat Pump Air FiltersHeat Pump Air Filters linkHeat Pump Air Filters
Go to HEPA HVAC Air FiltersHEPA HVAC Air Filters linkHEPA HVAC Air Filters
Go to ULPA HVAC Air FiltersULPA HVAC Air Filters linkULPA HVAC Air Filters

Clean ductwork starts with keeping your air filters changed.

HVAC Air Filtration:
Terms & Online References

Airborne Contaminants
Airborne Particulates
Air Filtration
Allergens / Pollen Spores
Chemicals / Cleaners
Dirt / Dust Mites
Environmental Pollution
Fungi / Fungus
HEPA Filtration
IAQ (Indoor Air Quality)
Lead / Cadmium / Chromium (Metals)
Microns / Micron Rating
Microbial / Microorganisms
Mold / Mildew
Pet Dander / Human Dander
Pleated Type Air Filters
MERV Ratings
Standard / Disposable
Smells / Odors / Smoke
ULPA Filtration
Vapors / Gases / Fumes / Mists
Viruses / Bacterias
VOCs (Volatile Organic Compounds)
Washable Type Filters

When sizing an air filter allow 1/2" off both total width and height.