NAFA Certified Air Filter Specialist (CAFS)

In response to the need for quality assurance, increased education and recognition of professional achievement within the industry, NAFA developed the NAFA Certified Air Filter Specialist (CAFS) program — the first education and certification program designed specifically for air filtration professionals.

The CAFS program distinguishes those professionals who have demonstrated a thorough, up-to-date understanding of air filtration technology and high level of professionalism. In order to become certified, air filtration professionals must pass an extensive examination on the principles, methods and applications of air filtration. Candidates for certification are also subject to compliance with the NAFA Code of Ethics. Certification is renewable on an annual basis pending successful completion of continued education requirements in order to demonstrate current and continued expertise.

When purchasing products or services from a Certified Air Filter Specialist, customers are assured that their particular requirements and needs will be addressed by a knowledgeable professional.

The CAFS Exam is strictly pass/fail based on the total number of correct answers. No other details will be released; correct or incorrect answers will not be shared. Samples test questions are not available.

FAQ About The CAFS Exam

  • What do I need to study in order to pass the Certified Air Filter Specialist exam?
    The 100 question (50 multiple choice, 50 true/false) CAFS Exam is based on the NAFA Guide to Air Filtration, 5th Ed. (2014). In fact, every question comes straight out of the book! If you study the manual thoroughly you should have no problem passing the exam. We also recommend that you have at least one year of field experience in the air filter industry. NAFA does offer a “tutorial” (see below), however, if you have not read and understood the NAFA Guide to Air Filtration, you will probably not pass the exam.
  • What is the Cost to take the exam?
    For members, the cost to take the exam is $200.00; to renew certification each year, the cost is $40.00. For nonmembers of NAFA, the cost to take the exam is $500.00; to renew certification each year, the cost is $300.00.
  • What are the renewal requirements?
    To maintain CAFS Certification, you must complete eight (8) continuing education credits annually from the categories listed below. No more than four (4) total credits will be accepted from any one category. These activities must have been completed between October 1 and September 30. Nonmembers of NAFA must have attended an event sponsored by NAFA or ASHRAE, EPA, BOMA, AMIAQC, AFE, NAPE, AFS, AABC, RSES, ACCA, CETA, NSPE, IAQA, AIA, NEBB, ASHE or SMACNA and submit a certificate of attendance from such event.4 Credits:

    • Attended NAFA Technical Seminar and / or NAFA Annual Convention
    • Attended seminar on HVAC, IAQ, or filtration given by a related association or organization (such as ASHRAE, EPA, BOMA, AMIAQC, AFE, NAPE, AFS, AABC, RSES, ACCA, CETA, NSPE, IAQA, AIA, NEBB, ASHE or SMACNA
    • Served on a NAFA Committee and attended at least two committee meetings within the year
    • Attended ASHRAE National Winter Meeting
    • Attended ASHRAE National Summer Meeting
    • Attended training seminar related to HVAC, IAQ, or filtration given by a supplier/manufacturer of HVAC, IAQ, or filtration related products

    2 Credits:

    • Attended and passed a college level course on HVAC, IAQ, or filtration
    • Wrote a technical article for publication in Air Media or other approved publication related to HVAC air filtration
    • Gave a technical presentation at the NAFA Technical Seminar, Annual Convention, other event related to HVAC or air filtration industry or otherwise presented technical filtration information for educational purposes
    • Presented an in-house seminar or attended an in-house seminar presented by a CAFS.
  • When / Where can I take the exam next?
    The next CAFS Exam will be administered during the next Annual Convention or AHR Expo and Technical Seminar.
  • What about the tutorial?
    At this time the NAFA CAFS “Tutorial” — also known as Track One, or The Principles of Air Filtration – is only presented at NAFA’s Technical Seminars each spring.
  • Are there any other options?
    If you choose, you can travel to the NAFA offices in Madison, WI to take the exam. If you wish to also receive a brief tutorial (approximately three hours), you must first contact NAFA Staff and prearrange a meeting time. There is a additional $25.00 per person proctor fee. If you have a large group taking the exam, you may also be able to have someone from the NAFA offices travel to your location to administer the exam. You must first contact NAFA Staff to prearrange this option. You must agree to pay travel and lodging expenses, plus an additional $25.00 per person proctor fee.