NADCA professionals follow a higher standard of cleaning and must comply with the NADCA Code of Ethics.

The global standard for assessment, cleaning and restoration of HVAC systems. Newly released 2021 Edition now available!

Get helpful tools and tips for hiring a reputable air duct cleaning company. Learn about the benefits of air duct cleaning, ways to avoid scammers and fraudulent contractors, and more. 

NADCA doesn't have access to consumer contact information and therefore, doesn't provide information to air duct cleaning companies. If you've received calls stating otherwise, these are false claims.

Minimum requirements necessary for commercial HVAC system cleaning projects. Newly released 2021 update now available!

NADCA membership and certifications are internationally recognized. These credentials are often specified in commercial bids and are increasingly asked for by consumers.