Standards & 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 

NADCA General Specifications 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 NADCA General Specifications

​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


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.


Air Conveyance E-Newsletter

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