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Industry Standard Tests Performance of Residential Single-Dryer Exhaust Duct Systems

NADCA's Dryer Exhaust Duct Performance Standard Provides Checklist for HVAC Professionals

NADCA, the HVAC Inspection, Maintenance, and Restoration Association, recently released its Dryer Exhaust Duct Performance (DEDP) Standard, a detailed checklist of performance measurements designed to verify that a residential single-dryer exhaust duct system is operating efficiently.

The DEDP Standard helps contractors obtain reliable information and measurable outcomes that make identifying conditions that cause dryer exhaust duct performance failure easier to diagnose. It also provides a framework for communicating issues with the system to customers.

"This Standard not only improves the quality of work, it allows the contractor to connect with their customer and explain the cleaning process," said Richard Lantz ASCS, CVI, Standards Committee member.

The DEDP Standard provides best practice for contractors to:

  • Test dryer exhaust duct performance and static pressure
  • Validate performance of dryer exhaust ducts in new residential construction installations
  • Inform customers of conditions that may be impacting their dryer's venting performance

The NADCA DEDP Standard is available for all industry professionals and defines the minimum performance and procedural requirements for residential single-dryer exhaust duct systems. The Standard is based on reliable principles, practical experience and review of applicable industry lecture and information. It focuses on identifying and improving dryer duct performance.

"Contractors should be trained and qualified for the job," said Lantz. "This Standard further educates professionals in the HVAC and air handling industries. NADCA professionals are equipped with this knowledge and have experience to inspect and fix residential single-dryer exhaust duct systems effectively."

NADCA encourages all air handling and HVAC professionals to download a free copy of the DEDP Standard by visiting www.nadca.com.

About NADCA:
The HVAC Inspection, Maintenance and Restoration Association, otherwise known as the National Air Duct Cleaners Association (NADCA) was formed in 1989 as a non-profit association of companies engaged in the cleaning of HVAC systems. NADCA's mission is to represent qualified companies engaged in the inspection, maintenance and restoration of HVAC systems, promote source removal as the only acceptable method of cleaning, establish industry standards for the association, and assist NADCA members in providing high quality service to their customers. With over 1000 members, NADCA is made up of a diverse group of HVAC industry professionals, including air systems cleaning specialists, mold remediators, and HVAC inspectors. To learn more about NADCA, visit

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