If you are attempting to renew your NCT certification - please log in here 


Welcome to the National Air Filtration Association's Online Testing!


The National Air Filtration Association (NAFA) was organized in 1980 to bring together distributors and manufacturer leaders in the HVAC air filtration industry. Starting with a small group of 25 members, NAFA has grown to over 650 member representing 200 manufacturers, distributors and professionals involved in air filtration. NAFA is 501(c) (6) trade association with a 12 member Board of Directors. NAFA has representation across the United States and in 12 foreign countries.


NAFA online is managed by AMPED, with the international office located in Middleton, WI. Correspondence can be addressed to:

NAFA, 1818 Parmenter St, Ste 300, Middleton, WI 53562 PH: 608.310.7542 FAX: 608.492-0523 Web: www.nafahq.org Email: nafa@nafahq.org


NAFA's Mission Statement

To conduct education and certification programs for members and end-user personnel; to provide forums for the exchange of information about technical standards, government regulations and product information; to educate end-users about the importance of air filtration and NAFA’s certifications; to certify air filtration products; to set field performance standards for products; and to explore ways to increase business for NAFA members.



NAFA has three accreditation programs:


NAFA Certified Technician Level I (NCT): The NCT is for those individual facility managers and HVAC technicians involved directly with the installation, operation and maintenance of air filtration systems on a daily basis. This certification utilizes the Installation, Operation and Maintenance of Air Filtration Systems text.

To Take the NCT certification online, click the Exams link on the left menu..


NAFA Certified Technician Level II (NCT II): The NCT Level II designation is earned by NCT’s who attend a hands-on training of Bag in/ Bag out procedures and pass an exam administered by NAFA Staff.


Certified Air Filter Specialist (CAFS): The CAFS is for those individuals working with clients and customers to specify, manufacture, distribute, sell or service air filtration. This certification utilizes the NAFA Guide to Air Filtration as the study text.


All certifications involve study, passing a national examination and ongoing yearly continuing education units for maintaining the accredidation. the designation programs are designed to meet the demands of building owners, HVAC service contractors and others who employ technicians in the HVAC industry for cleaner indoor air.



NAFA has an ongoing program of education for both members and the user community. Twice each year, NAFA members gather for continuing education and to learn about current practice and application of air filters, emerging technologies of allied industries that compliment or add to air filtration, and current research on HVAC and air filter application.


Additionally, NAFA members are trained to present a number of educational programs for the user community to help them better understand and apply air filtration technology to their buildings.