Air Duct Cleaning FAQ
Commercial Duct Cleaning – Questions You Should Ask
According to the National Air Duct Cleaners Association (NADCA), you should ask a contractor the following questions when hiring a commercial duct cleaning company to clean your air ducts.
Can the commercial duct cleaning contractor show proof of NADCA Membership and certification?
NADCA provides certificates to each of its members. This certificate lists the commercial duct cleaning company’s name and when their membership expires.
Can the commercial duct cleaning company provide 3 to 5 customer references?
If they are unable to do so, you may contact NADCA for a reference.
Does the contractor have written safety & confined space programs in addition to OSHA compliance reports?
For reference, you may want to view the NADCA Safety Manual, which covers the necessary measures companies should take as far as safety and protection.
Does the duct cleaning possess the proper licenses that are required by my city or state?
Not all cities or states require licenses for duct cleaning. Check with your local or state Department of Labor. For information regarding pesticide application licenses, sometimes needed when antimicrobial products are being used, click here.
How long has the commercial duct cleaning contractor been in the HVAC system cleaning business?
Many NADCA members provide residential and commercial duct cleaning services. However, some companies provide just one. If a company has just recently entered the commercial duct cleaning industry, they should be able to highlight recent training and education they have received.
Will there be an Air Systems Cleaning Specialist (ASCS) assigned to my project?
Each member of NADCA has one ASCS on staff; some have more than one. Many specifications require the presence of an ASCS. This certification signifies a high level of professionalism in the HVAC cleaning industry.
Will the commercial duct cleaning company actually do the work?
This issue should be discussed before the project begins. If they are sub-contracting the work, they still need to follow all recommended guidelines.
Will the contractor provide me with a means to conduct a visual inspection at any time during the cleaning?
Many duct cleaning companies have the equipment needed to offer this service. NADCA suggests asking the commercial duct cleaning about this option before the project is started.