Issue link: http://iaqnet.uberflip.com/i/637209
ACR The NADCA Standard • 2013 6 Determining the Need for HVAC Cleaning & Restoration It is recommended that HVAC systems be cleaned when a proper HVAC cleanliness inspection or building history indicates one or more of the following conditions exist: · The HVAC system is contaminated with an accumulation of particulate; · The HVAC system performance is compromised due to contamination build-up; · The HVAC system has been determined to be a source of unacceptable odors; · The HVAC system is discharging visible dirt or debris into the conditioned space; · The HVAC system has been contaminated as a result of fire, smoke, and/or water damage; · The HVAC system has been infested with birds, rodents, insects, or their byproducts; · The HVAC system has been determined to be at risk for fire hazard; · The HVAC system has become contaminated with construction debris or dust; · Mold contamination conditions have reached either Condition 2 or Condition 3; · Deterioration of fiber glass duct liner, duct board, or other porous components; · As part of an HVAC maintenance program as defined in ANSI/ASHRAE/ACCA Standard 180; · As part of the HVAC equipment manufacturers recommended maintenance practices; · As part of a proactive energy management program; · As part of a proactive indoor air quality management program; · As a component to achieve LEED Certification; · When a newly installed component or duct has been contaminated with construction and/or other dust and debris. NOTE: If there is any question on the need to clean, the NADCA Surface Comparison Test or NADCA Vacuum Test may be performed to assist in determining the need for cleaning. These tests are described in detail in Section 5 of this Standard.