NADCA Standards White Papers & Publications

ACR, The NADCA Standard for Assessment, Cleaning & Restoration of HVAC Systems

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

NADCA members use ACR, the NADCA Standard as a benchmark for best practices that customers have come to rely on. This comprehensive standard is specified for commercial projects worldwide, as well as by residential consumers who want assurances of effective air duct cleaning.To purchase a hard copy, please visit the NADCA store. 

Download ACR, THE NADCA STANDARD - ENGLISH 

Download ACR, THE NADCA STANDARD - SPANISH  

Download ACR, THE NADCA STANDARD - FRENCH 

Download ACR, THE NADCA STANDARD - ITALIAN

NADCA General Specification for the Cleaning of Commercial HVAC Systems

This document describes the minimum requirements necessary for commercial HVAC system cleaning. Please note: The document must be modified to accurately account for the unique system variations within an individual building. To purchase a hard copy, please visit the NADCA store.

Download the NADCA General Specification

Dryer Exhaust Duct Performance (DEDP) Standard

The DEDP Standard is a detailed checklist of performance measurements designed to ensure a residential single-dryer exhaust duct system is operating properly and efficiently.

 

Introduction to HVAC System Cleaning Services: a Guideline for Commercial Consumers

This publication serves as a guideline for consumers of commercial HVAC system cleaning services. Among the topics covered in this guideline are the basics of HVAC system cleaning procedures, how to select a qualified contractor and the characteristics of a successful commercial HVAC cleaning job.

Purchase Introduction to HVAC System Cleaning Services

NADCA Energy Research Project

In 2008, NADCA initiated a project with researchers from the University of Colorado at Boulder (CU) to conduct an in-depth study of this issue. The purpose of the study was to correlate the substantial energy savings that can be attained through complete cleaning of fouled heating and cooling systems.

Read More About the Energy Research Project

DucTales

NADCA's bi-monthly industry magazine will keep you informed of the latest industry trends to help grow your business. NADCA members can access DucTales archives online.

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Air Conveyance E-Newsletter

NADCA's monthly e-newsletter provides information on international industry partners, clean air updates, IAQTV, and more.

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Restoring Energy Efficiency Through HVAC Air Distribution System Cleaning

The NADCA White Paper on Restoring Energy Efficiency Through HVAC Air Distribution System Cleaning outlines

  • How air distribution system cleaning reduces HVAC energy consumption
  • How energy consumption can be calculated with pre‐cleaning and post‐cleaning measurements
  • Mechanical and other issues within HVAC systems that contractors encounter while inspecting and/or cleaning that can be reported and corrected to maximize HVAC energy efficiency.

Download the White Paper

Download Energy Efficiency Formula 

DOWNLOAD THE WHITE PAPER FIELD TRIALS SUMMARY OF FINDINGS

Chemical Product Applications in HVAC Systems

It is generally agreed that source removal of contaminants remains the single best method for cleaning and decontaminating HVAC systems. However, chemicals may be applied within HVAC systems for a variety of reasons. This paper provides an overview of chemical products and associated techniques utilized in and around HVAC systems.

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Ultraviolet Lighting Applications in HVAC Systems

It is generally agreed that source removal of contaminants remains the single best method for cleaning and decontaminating HVAC systems. One of the tools used to improve air quality from HVAC systems is the use of ultraviolet lighting within the system, intended to decrease the level of airborne pathogens and allergens going through the HVAC system and thus into the indoor air environment. Currently a broad range of information exists regarding the use and efficacy of ultraviolet lighting. This paper provides direction in the use of ultraviolet lighting applications in HVAC systems. 

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Ozone Applications in HVAC Systems

Source removal of contaminants remains the single best method for cleaning and decontaminating HVAC systems. However, HVAC systems sometimes require treatment for odors or the reduction of microbial contamination. One remedy that has been used for these problems is ozone, a form of oxygen. Currently a broad range of information exists regarding the use and efficacy of ozone. This paper provides direction in the use of ozone applications in HVAC systems. 

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Interior Insulation Applications in HVAC Systems

One of the critical aspects of HVAC systems is the insulation used inside metal ductwork, air handlers, mixing boxes, and other components of HVAC systems. Insulation materials need to be understood and handled properly to ensure optimum system performance and compliance with regulations. This paper covers the specific topic of internally insulated sheet metal ductwork and HVAC system components.

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