Who NADCA is
The National Air Duct Cleaners Association (NADCA) was founded in 1989 in the United States and maintains the ACR standard — Assessment, Cleaning and Restoration of HVAC Systems — the document most international specifications cite when they specify duct cleaning at all. NADCA also runs the certification scheme behind the Air Systems Cleaning Specialist (ASCS) credential and publishes a public member directory.
What certification actually covers
Three distinct things get called “NADCA certified”, and procurement teams should distinguish them:
- Company membership. A firm can be a NADCA member in good standing. Membership requires the company to employ at least one certified ASCS and to follow NADCA’s code of ethics.
- ASCS certification. A person — not a company — passes NADCA’s examination on HVAC system assessment, cleaning methods, containment and verification. The ASCS is the individual qualified to manage your project.
- Specialist qualifications. Beyond ASCS, NADCA offers deeper qualifications such as VSMR (Ventilation System Mold Remediation) for microbial work in ventilation systems.
A credible vendor can show all applicable proofs with numbers and expiry dates. Energetic Services, for example, is a NADCA Regular Member whose project lead holds ASCS #12775637 (valid to 30 June 2027) with the VSMR qualification — both stated on our credentials page alongside a link to verify them.
Why it matters in India specifically
India has no statutory standard for HVAC system cleaning. No licence is required to offer duct cleaning, and the market ranges from NADCA-aligned specialists to general housekeeping crews with a vacuum. That absence of regulation transfers the quality burden onto the buyer — usually a facility or procurement manager answerable to global EHS standards their vendor has never read.
NADCA certification imports an external standard into that gap:
- A defined method. ACR specifies source-removal cleaning under negative pressure with verification — ruling out the “spray and pray” approaches common in unregulated markets.
- An accountable individual. The ASCS on your project has a certificate number that can be checked and revoked.
- Verifiability. NADCA’s Find-a-Professional directory is public. A claim of certification takes under a minute to confirm — or expose.
How to verify a NADCA claim
Ask for the certificate number and the certified person’s name, then check NADCA’s Find-a-Professional directory at nadca.com. Confirm the company’s membership and the individual’s ASCS separately — and check the expiry date. A vendor who volunteers all of this before being asked is telling you something; a vendor who cannot produce it is telling you something too.