Each month we publish a newsletter titled IAQ Website of the Month. The excerpt below was originally published in the June 2012 newsletter.
Air duct cleaning often gets a bad rap due to unscrupulous and unethical contractors. Abuses are often recorded on hidden camera, like this one from last year: Dateline NBC.
The National Air Duct Cleaners Association (NADCA) participated in the Dateline NBC exposée. This association has some great resources, so I’m featuring them as the Website of the Month.
On the NADCA website, you can download a free copy of their showpiece standard: Assessment, Cleaning and Restoration of HVAC Systems. NADCA also produces a Checklist for Residential Consumers. This checklist is designed to help residential consumers understand NADCA’s recommendations regarding the process of HVAC cleaning.
The document that I want to highlight is a new publication titled NADCA Position Paper on Chemical Product Applications in HVAC Systems. This has been a huge issue in my opinion. I find that the average air duct cleaner doesn’t understand the EPA antimicrobial rules and ends up misrepresenting chemical treatments.
Here are two great quotes from the document:
- “At this time, the EPA has not accepted any disinfectant, sanitizer or fungicidal products for use in the ductwork of HVAC systems.”
- “Coatings and sealants used as resurfacing and repair products that do not claim to kill microorganisms, and which claim only to prevent growth on or in the coating film, do not need to be registered by the EPA for use in ductwork.”
If you perform duct cleaning or just recommend it every now and then, you need to read this document. I’m hoping it will clear up some of the confusion surrounding the use of different chemicals in the HVAC system. To read the position paper, click here.
As you search around the NADCA website, you’ll find some other free resources to expand your knowledge of duct cleaning. To visit this month’s featured website, click on this link: NADCA homepage.
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To consult with Ian in the Chicagoland area, please visit this page: Air Quality Testing.