Certified Ventilation Inspector (CVI)

NADCA certification to Inspect Commercial HVAC Systems - Who is NADCA

NADCA is recognized within the HVAC industry as the gold standard for HVAC cleaning certification.

NADCA’s CVI certification recognizes those industry professionals involved in the inspection of HVAC systems. Certified Ventilation Inspector (CVI) certified individuals are qualified to perform inspection of commercial HVAC systems by NADCA.


What is means to be a CVI 

NADCA worked with independent test development experts and industry professional Subject Matter Experts (SMEs) engaged in the practice of HVAC system inspection to perform a job analysis for the CVI certification

The job analysis ensures the CVI holder understands current practices in the industry and demonstrates the knowledge, skills and abilities required for quality inspection of commercial HVAC systems.


What is required to hold a CVI certificate

To take the CVI Certification Exam a person must hold an active Air Systems Cleaning Specialist (ASCS) certification.

The inspectors look for the presence of dirt, obstructions, excess moisture, and microbial contamination that affect HVAC system performance or occupant health and comfort. 


What The Inspection Includes

Inspectors look at the following:

  • Reviews the building’s drawings, history, and HVAC system documentation
  • Perform a walkthrough to become familiar with the physical layout of the building and the HVAC system.
  • Builds a Scope Of Work that includes a detailed written plan to reviewed before the inspection takes place
  • Inspection includes air handling units (AHUs), supply air ducts, return air ducts, outdoor intake make-up ducts, and air exhaust systems.


National Air Duct Cleaners Association NADCA Sets the Standards For The HVAC Industry 

NADCA is recognized within the HVAC industry as the gold standard for HVAC cleaning certification. As an independent association, NADCA provides quality standardization, training, and certification for the entire HVAC cleaning industry. 


“The HVAC cleaning industry has changed dramatically since 1989. NADCA has led the way with the continued development of ACR, The NADCA Standard for Assessment, Cleaning & Restoration of HVAC Systems, the industry’s standard for HVAC cleaning and restoration.”


How often does the certification need to be renewed? 

The NADCA Certified Ventilation Inspector certification has strict requirements, and renewals happen individually every three years.

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