Filtera
- Offering air filters for furnaces and air conditioning systems used in homes and businesses. Includes fiberglass, polyester, and washable varieties.
- http://filtera.stores.yahoo.net/

Web Products, Inc.
- Manufactures furnace and AC filtration products for improved air quality in the home.
- http://www.webproducts.com/

FiltersRx
- Features access to product descriptions, specifications, pricing, and free product samples as well as information about the company's history, Indoor Air Quality and numerous industry links.
- http://www.lifetimeind.com/

Worldwide Filters
- A full-line seller of HVAC filters geared toward the residential and commercial markets. Pleats, panels, high-performance filters as well as custom sizes are available.
- http://www.worldwidefilters.com/

HVAC-Filters.org
- Offers indoor air quality filters and related products.
- http://www.hvac-filters.org/

UltimateAir�
- Offers a whole house, energy efficient, air cleaning system to combat indoor pollution.
- http://www.ultimateair.com

Air Care Electrostatic Filters
- Offers electrostatic air conditioning and furnace filters with anti-microbial media that inhibit the growth of bacteria. Permanent filters have a lifetime warranty and custom size filters are available.
- http://www.air-care-filters.com/

AllergyPlus
- Offers air conditioning, ventilation, and central vacuuming.
- http://www.allergyplus.co.uk

Good Filter Company
- Manufactures and markets air filters in a variety of types like electrostatic, charcoal, metal foil, and metal mesh in standard and custom sizes. Offers specifications and contact details.
- http://www.goodfiltercompany.com/

Your Filter Connection
- Features Filtrete home air filters made by 3M in standard and custom sizes. Addresses the different grade of these filters.
- http://www.yourfilterconnection.com/

Furnace Filter Warehouse
- Offers a variety of supplies including humidifier pads and electronic, electrostatic, pleated, disposable, and HEPA filters. Provides a FAQ section and wholesale account information.
- http://www.furnacefilterwarehouse.com/

Research Products Corporation
- Offers replacement parts for the Aprilaire line of whole-house air cleaners. Provides product information, a dealer locator, as well as a company background page.
- http://www.aprilaire.com/

Air Control Supply, Inc.
- Sells furnace filters and decorative grills. Provides local heating and air conditioning services in Bohemia, New York.
- http://www.aircontrolsupply.com/

Acadiana Cooling & Heating, Inc.
- Distributors of air conditioning and furnace filters.
- http://www.filtersolution.com/

Filtration Network Group Inc.
- Provides replacement and upgrade home air filers. Also offers a subscription service.
- http://www.newairfilters.com/

PuraClean
- Presents a filter spray that turns an ordinary air filter into an electrostatic filter to collect dust, pollen, pet dander, mold, smoke, allergens and other airborne particles.
- http://www.puracleanspray.com/

Filters 4 Home
- Presents Purolator pleated air conditioning and heating filters in standard and odd sizes for the home or office.
- http://www.filters4home.com/

Fresh Air Duct Cleaning, Inc.
- Manufactures and distributes lifetime electrostatic filters and performs air duct cleaning.
- http://www.freshairduct.com/

Parker-Pearce Service Experts
- Features Aprilaire SpaceGard replacement filters as well as humidifier pads. Schedule heating and air conditioning service calls in the Washington DC metropolitan area.
- http://myserviceexperts.com/

Furnace-filters-and-humidifier-pads.com
- Offers filters and replacement parts in the USA and Canada for many brands of furnaces, humidifiers, and air purifiers, as well as reminders to service.
- http://www.furnace-filters-and-humidifier-pads.com/

Accu-Temp Inc.
- Offers replacement Aprilaire and Space-Gard filters through a secure server online order form.
- http://www.fixyourfurnace.com/

Filter Warehouse Company
- Provides Airguard air filter products and supplies. Offers air duct cleaning and mechanical hygiene for residential, hospital and industrial needs.
- http://www.filterwarehouse.com

Kleen Air Services
- Read about this air conditioning and heating company that carries the full line of Honeywell products and replacement filters.
- http://www.air-filtersonline.com/

On Time Mall
- Air purifier and humidifier parts and equipment. Featuring brands such as Spacegard, Honeywell, Aprilaire, Trion and A+2000.
- http://www.ontimemall.com/

Voors Appliance, Heating & Cooling, Inc.
- Provides replacement furnace filters for Air Bear, Honeywell & Space-Guard high efficiency air filters.
- http://voors.com/

YourFilters.Com
- Replacement air filters and humidifier pads for your home or office.
- http://yourfilters.com/

Schill's Humidifier Service
- Markets Aprilaire and Bemis humidifiers and air purifiers. Also offers parts and filters.
- http://www.schills-humidifier.com/

Purity Home Products
- Offers air filters in a range of sizes and trim-to-fit configurations.
- http://www.purityhomeproducts.com

Filters-Now.Com
- Offers 3M Filtrete and MicroFine filters for home and office.
- http://www.filters-now.com/

Cristal Enterprises
- Antimicrobial air filters are an inexpensive alternative for allergy sufferers. These air filters remove dust, mold, and dustmites from the airstream in your home.
- http://www.oxyfilters.com/

BoAir
- Offers permanent filter replacements with anti-microbials for clean indoor air.
- http://www.boair.com

AquaDoc.com
- Suppliers of electrostatic air filters that clean the air with static electricity.
- http://www.aquadoc.com/

American Filtration
- Markets a complete line of high efficiency residential and commercial air filters including high performance pleated, custom made, odor control, antibacterial, and special size filters.
- http://www.aafilters.com/

Air Filters Direct
- Manufacturer offers several factory direct anti-microbial electrostatic and HEPA air filters.
- http://www.air-filters-direct.com/

Air with Care, L.L.C.
- Manufactures and markets a range of anti-microbial electrostatic air filters.
- http://www.airfactor.com/