photo by Tim Griffith / UCSF

Our highly trained, certified professionals ensure accurate and reliable results.

National Air Balance Company, Inc. (NABCO) has been a leading provider of Independent Test & Balance (TAB) services for the built environment for over 50 years.

Our firm is the largest and most experienced Test and Balance (TAB) company, with over 55 employees providing Total System Balancing (TSB) services in California and Nevada.

We are a member of the Associated Air Balance Council (AABC), the world’s leader in the Independent Test and Balance (TAB) industry.