The Homeowner’s Guide – Why Choose a NADCA Member?

NADCA Members Follow the Industry Standard

NADCA sets the industry standard for HVAC system cleaning. When done correctly, HVAC cleaning is a very beneficial service for your home. NADCA’s dedication to quality promotes a higher standard of performance for all of its members—which can help give homeowners peace of mind.

In order to become a NADCA member, a company must:

Have at least one NADCA certified Air Systems Cleaning Specialist (ASCS) on staff.

Maintain general liability insurance.

Agree to clean according to ACR, the NADCA Standard.

Comply with NADCA’s Code of Ethics.

All ASCS certified individuals must acquire continuing education credits to maintain certification each year.

Finding a QUALIFIED Contractor

NADCA provides the following tips to help homeowners hire a qualified contractor for their HVAC system and air duct cleaning needs.


Ask for proof of NADCA membership and certification and visit NADCA’s find a Professional Directory at to verify NADCA membership.

Ask for proof of insurance.

Make sure the contractor can provide proof of proper license(s), as applicable.


Ask the contractor to assess and explain the service to be provided.

Ask the contractor to specify which components will be cleaned as part of the service, such as the air ducts (the supply and return), coils, drains, registers, grills, etc.

Verify that the contractor will limit the release of dust, dirt and debris into your home during the cleaning.

Make certain that the contractor will use both agitation and vacuum collection while cleaning.

Ask the contractor to inform you if any chemicals will be used as part of the cleaning, and provide a safety data sheet for products used.

Questions? Be Sure to Ask Your Contractor!

Source: The National Air Duct Cleaners Association (NADCA)

Aspen Air Duct Cleaning is licensed and ensured, a member of the National Air Duct Cleaners Association (NADCA) and the National Organization of Remediators and Mold Inspectors (NORMI).

Contact us for an Air Duct System Inspection and to learn more about how sealing air duct leaks can improve indoor air quality and reduce energy costs: 1-800-931-6653 or email

Aspen Air Duct Cleaning is an approved Aeroseal Dealer.