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UPHOLDING THE HIGHEST INDUSTRY STANDARDS
The National Air Duct Cleaners Association (NADCA) was formed in 1989 as a nonprofit association of companies engaged in the cleaning of HVAC systems. Its original mission was to promote source removal as the only acceptable method of cleaning and to establish industry standards for the association.
NADCA’s mission has expanded to include qualified companies engaged in the inspection, cleaning, and restoration of HVAC systems. NADCA supports members’ success with standards, education, certification, marketing, and advocacy to promote ethics and the highest quality services.
The goal of the association is for its members to be the number one resource for consumers and other entities seeking air duct cleaning and HVAC inspection, cleaning, and restoration.
Why Choose a NADCA Member?
NADCA members work in accordance with ACR, the NADCA Standard, which provides guidance on the proper and safe techniques required during HVAC inspection, cleaning and restoration procedures.
At least one employee of each NADCA member company must receive NADCA’s Air System Cleaning Specialist (ASCS) certification and maintain this certification with Continuing Education Credits each year.
A majority of NADCA members have been in business many years and possess the knowledge and experience necessary to perform to the highest standards. Members also have significant knowledge of the tools and equipment that are necessary for each particular job. NADCA members are truly committed to our industry.
Air Systems Cleaning Specialist
NADCA’s Air Systems Cleaning Specialist (ASCS) is a worldwide credential recognizing knowledge and skills related to HVAC system hygiene. The ASCS program certifies individuals, and those who complete the program may use the credential to market personal expertise.
NADCA works with independent test development experts and industry Subject Matter Experts (SMEs) engaged in the practice of HVAC system cleaning to perform a job task analysis for the ASCS certification.
The job task analysis ensures the credential reflects the most current practices in the industry and properly reflects the knowledge, skills, and abilities required for cleaning and restoring HVAC systems.
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THE BENEFITS OF DUCT CLEANING
NADCA's rule of thumb for consumers is that "if your air ducts look dirty, they probably are," and that dirty HVAC systems should be inspected by a reputable, certified HVAC professional. Below are some other reasons business owners choose to have their air ducts cleaned.
Indoor air quality
Indoor air quality is one concern that business owners have when they decide to investigate air duct cleaning. Think of your heating and cooling system as the lungs of your business. The system takes air in and breathes air out. Through normal occupation in a building, we generate a great deal of contaminants and air pollutants, such as dander, dust, and chemicals. These contaminants are pulled into the HVAC system and recirculated 5 to 7 times per day, on average. Over time, this recirculation causes a buildup of contaminants in the duct work.
While dirty ducts don’t necessarily mean unhealthy air in your home, school or workplace, they may be contributing to larger health issues or harboring contaminants that could cause serious problems for people with respiratory health conditions, autoimmune disorders or some environmental allergies.
Energy saving
According to the U.S. Department of Energy, 25 to 40 percent of the energy used for heating or cooling a home is wasted. Contaminants in the heating and cooling system cause it to work harder and shorten the life of your system. Although filters are used, the heating and cooling system still gets dirty through normal use.
When an HVAC system is clean, it doesn’t have to work as hard to maintain the temperature you desire. As a result, less energy is used, leading to improved cost-effectiveness.
ACR (ASSESSMENT, CLEANING, RESTORATION) – THE NADCA STANDARD
Section 1 - Inspections
1.5 Routine HVAC Inspection
It is recommended that HVAC system inspections be part of a building’s overall energy and indoor air quality management plan, and that the inspections be addressed in accordance with documents such as ANSI/ASHRAE/ACCA Standard 180 Standard Practice for Inspection and Maintenance of Commercial Building HVAC Systems and NFPA 90A Standard for the Installation of Air Conditioning and Ventilating Systems.
1.5.1 Inspection Schedule Table
HVAC systems shall be routinely inspected for cleanliness by visual means. Table 1 provides a recommended inspection schedule for major HVAC components within different building use classifications. The inspection intervals specified in Table 1 are minimum recommendations.
Table 1
HVAC CLEANLINESS INSPECTION SCHEDULE (RECOMMENDED INTERVALS)
| Building Use Classification | Air-Handling Unit | Supply Duct | Return Duct /Exhaust Duct |
|---|---|---|---|
| Residential | 1 Year | 2 Years | 2 Years |
| Commercial | 1 Year | 1 Year | 1 Year |
| Industrial | 1 Year | 1 Year | 1 Year |
| Healthcare | 1 Year | 1 Year | 1 Year |
Source: ACR The NADCA Standard