Free Indoor Air Quality Hotlines and Resources

Free Indoor Air Quality Hotlines and Resources

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IAQ INFO | Asthma "No Attacks" Hotline | Smoke-free Home Pledge Hotline | National Radon Information Line | Radon Fix-it Line | National Hispanic Indoor Air Quality Hotline | Tools for Schools Technical Assistance Hotline


Indoor Air Quality (IAQ) Information Clearinghouse [IAQ INFO]


IAQ INFO is an easily accessible, central source of information on indoor air quality, created and supported by the U.S. Environmental Protection Agency (EPA). As concern about air pollution indoors has grown, so has the amount of information on this subject but getting current, useful information can be a challenging task. The purpose of IAQ INFO is to help you locate information to answer your questions about indoor air pollution.

Consumers may call the toll-free number 1-800-438-4318 to speak to an information specialist, Monday through Friday, 9:00 a.m. to 5:00 p.m. eastern time. After hours, consumers may leave a voice message, or you may make inquiries by fax (703) 356-5386 or via e-mail: [email protected] anytime and by mail at:

Indoor Air Quality Information Clearinghouse (IAQ INFO)
P.O. Box 37133
Washington D.C. 20013-7133

Asthma No Attacks Hotline
1-866-NO-ATTACKS (1-866-662-8822) exiting epa

To speak with an Asthma Information Specialist, please call (800) 315-8056, Monday through Friday, between 9am and 8pm EST.

Smoke-free Home Pledge Hotline
1-866 SMOKE-FREE (1-866-766-5337)

Take the Pledge online at or call our toll-free Smoke-free Home Pledge Hotline at 1-866-SMOKE-FREE (1-866-766-5337).

Once you pledge online, you can print out a certificate saying you made your home smoke-free. You can also receive a Smoke-Free Home Kit by mail that includes the certificate plus:

  • A congratulations letter from the EPA
  • Tips on keeping your home smoke-free
  • A smoke-free home magnet

To order the Kit, please call our Smoke-free Home Pledge Hotline at 1-866-SMOKE-FREE (1-866-766-5337).

Frequent Questions for other Indoor Air Topics
Asthma | Radon | Schools | Smoke-free Homes | Mold Resources


sources of indoor air pollution
Biological Pollutants
Carbon Monoxide
Formaldehyde/Pressed Wood Products
Household Cleaning and Maintenance, Personal Care, or Hobbies
Nitrogen Dioxide
Respirable Particles
Secondhand Smoke/Environmental Tobacco Smoke
Stoves, Heaters, Fireplaces, and Chimneys
Read "The Inside Story: A Guide to Indoor Air Quality" [EPA 402-K-93-007, April 1995]


The National Safety Council's Radon Hotline
1-800-SOS-RADON (1-800-767-7236) exiting epa

The National Safety Council's Radon Hotline 1-800-SOS-RADON [1-800-767-7236] provides an informational recording 24 hours a day. Through this automated system, callers can order a brochure on radon by leaving their name and address. The brochure contains information on ordering a low-cost short-term test kit.

In addition, callers are advised to call 1-800-55-RADON [1-800-557-2366] to speak with an information specialist. You may also write via [email protected] . They are available to assist callers between 9:00 p.m. to 5:00 p.m. eastern time on business days. Information specialists can answer specific questions and mail free, single copies of many radon documents, including EPA's Home Buyer's and Seller's Guide to Radon. More radon information from the National Safety Council is available at exiting epa

The Radon FIX-IT Program
1-800-644-6999 exiting epa

The Radon Fix-it Line 1-800-644-6999 assists consumers with elevated radon levels of 4 pCi/L or higher by providing information that will allow them to take the necessary steps toward fixing their homes. The Radon Fix-it Line is in operation 24 hours a day, seven days a week. Callers to the hotline receive information about:

  • reducing elevated radon levels
  • referrals to technical experts in their State government
  • addressing radon problems in connection with real estate transactions.

Consumers with specific radon-related questions may leave a message for a counselor to call back.

NHIAQ Hotline

National Hispanic Indoor Air Quality Helpline/National Alliance for Hispanic Health exiting epa
Phone 1-800-725-8312 (1-800-SALUD-12) (202) 387-5000

The National Hispanic Indoor Air Quality Hotline provides bilingual (Spanish/English) information about indoor air pollutants that consumers may find inside their homes, offices or schools.

Consumers, health and human services professionals, outreach workers, and community leaders from across the United States, Alaska, Hawaii and Puerto Rico can call 1-800-SALUD-12 (1-800-725-8312), or, in Washington, DC, (202) 265-6388 to speak with a bilingual health information specialist (HIS) Monday through Friday, 9:00 a.m. to 6:00 p.m. eastern time. After business hours, consumers may leave a message and an HIS will return the call the next day during business hours.

What kind of information and services are available from the NHIAQ Hotline?

  • Technical information on indoor air pollutants, for example:
    health effects of indoor air pollution; sources of indoor air pollution; measurement/testing of radon in homes; and, preventing exposure to indoor air pollutants.
  • Bilingual (English/Spanish) written information on indoor air quality, such as [these hyperlinks go to EPA's IAQ web pages]:
    Radon (Rn); Lead (Pb); Carbon Monoxide (CO); and Environmental Tobacco Smoke (ETS)
  • Provide radon test kits to consumers with bilingual test instructions; consumer follow-ups with bilingual explanation of test results; and, referrals to other sources if mitigation is recommended.
  • Referrals to other similar hotlines; government agencies and resources; EPA's State Environmental Departments with IAQ and Radon Contacts; EPA Regional IAQ and Radon Coordinators; EPA Indoor Air Partners; and Hispanic community-based organizations.
  • Bibliography of indoor air quality materials in Spanish. This bibliography lists the name of the publication; brief description of publication; publishing entity and a telephone number for obtaining copies.

Tools for Schools Technical Assistance Hotline

A Technical assistance information hotline is now available for users of the IAQ Tools for Schools Kit. Hotline staff provide information and answer questions on topics including mechanical systems, ventilation, pollutant sources, and application of the Kit. The hotline can be accessed weekdays from 8:30am to 4:30 pm central time through a toll-free telephone number, 1-866-837-3721. Questions may also be sent anytime by e-mail to [email protected].

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