National Air Duct Cleaners Association

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National Air Duct Cleaners Association
FounderJohn Sumerlin
Founded atKansas City, Missouri
Legal statusActive
HeadquartersMount Laurel, NJ
  • Richard Lantz
  • Rick MacDonald
  • Dan Stradford
  • Mike White
  • Mark Zarzeczny
  • Mike Dexter
  • April Yungen
  • Andrea Casa
  • Jim Castellano
  • Michael Vinick

The National Air Duct Cleaners Association (NADCA) is a non-profit organization committed to publishing standards for safety, evaluation, and cleaning of heating, ventilation, and air conditioning (HVAC) ducts. They also offer several certifications for HVAC companies and professionals, as well as maintain an anti-fraud task force.[1]

The Division of Occupational Safety and Health of the United States Department of Labor recommends hiring only duct cleaning professionals who are NADCA members.[2]


The NADCA was founded in 1989 when Pringle Power Vac owner John Sumerlin gathered 25 HVAC professionals to discuss the professional duct cleaning industry.[3]

Founded to promote the source removal method of duct cleaning and the establishment of industry standards, the NADCA currently offers training courses, publishes standards, provides professional resources, maintains an HVAC professional locator tool, and more.

The NADCA first published a standard, “Standard 1992-01, Mechanical Cleaning of Non-Porous Air Conveyance System Components,” in 1992. They currently publish “Standard for the Assessment, Cleaning, and Restoration of HVAC Systems,” called ACR: the NADCA Standard. The ACR provides guidelines for assessing HVAC systems, evaluating cleanliness, preventing hazards, cleaning methods, and cleaning equipment.[4]

Presently, the members of the NADCA are over 1,300 HVAC cleaning member companies with one or more certified ASCS technicians.


In 1995, the NADCA began their first certification program, administering examinations for Air Systems Cleaning Specialist (ASCS) in Baltimore, Atlanta, Chicago, Dallas, and Los Angeles.

In 2003, they launched a Ventilation System Mold Remediator (VSMR) training and certification program, as well as a Certified Ventilation Inspector (CVI) training and certification program.

In 2013 NADCA decided to combine the ASCS and VSMR certifications into one certification, the ASCS. The present ASCS course has been revised to include the necessary VSMR training.

The ASCS and CVI programs are currently being offered.


NADCA offers a variety of resources for industry professionals looking for industry standards, white papers, videos, cleaning equipment and more.

See also[edit]

External links[edit]


  1. ^ "Hidden Camera Investigation Reveals Technician Charging $700 For Easy Air Vent Fix". Inside Edition. Retrieved 2016-01-18.
  2. ^ "DOHS Fact Sheet on HVAC Duct Cleaning" (PDF). National Institutes of Health. Office of Research Services (ORS). 2015-05-14. Retrieved 2016-01-18.
  3. ^ "History of NADCA | NADCA". Retrieved 2016-01-18.
  4. ^ "Duct-cleaning Services Require a Contracting Commitment". Retrieved 2016-01-18.