Your browser version is outdated. We recommend that you update your browser to the latest version.

Ventilation Cleaning

Maintenance of exhaust ductwork and fans is an often over-looked task in commercial and industrial facilities. Exhaust fans are intended to control moisture and remove indoor odors and pollutants. Exhaust fans that are improperly vented may cause microbial growth due to the improperly filtered and vented air. Having your exhaust fans cleaned and inspected annually can increases air flow, reduce operational and maintenance costs and in some cases, prevent fires.


Industry Standard Tests Performance of Residential Single-Dryer Exhaust Duct Systems  
NADCA’s Dryer Exhaust Duct Performance Standard Provides Checklist for HVAC Professionals
MT. LAUREL, N.J. – March 21, 2015 – 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