Andover homeowners planning air duct cleaning this fall should verify licensing and insurance before booking. Nathan Wong Air Duct Cleaning Inc meets Massachusetts standards with meticulous white-glove service and satisfaction guarantees.
Why "Licensed & Insured" matters for Andover homes
In Andover’s climate—hot summers and snowy winters—ducts accumulate dust, mold, and pet dander faster than you think. Massachusetts requires air duct cleaners to hold a Home Improvement Contractor license (CSL) and carry liability insurance. Before you hire, ask for proof: a valid CSL number and a certificate of insurance naming your property. Nathan Wong Air Duct Cleaning Inc maintains both, and we provide them on request. Skipping this step risks uninsured damage or shoddy work. For details on our credentials, visit our about page.
What to check beyond the license in Andover
Andover homeowners should also confirm the company uses NADCA-certified technicians and follows EPA guidelines for duct cleaning. Ask if they inspect ducts first and provide a free estimate. Nathan Wong’s team performs a no-obligation walkthrough, then explains the scope of work before you commit. We also guarantee our work and clean up thoroughly—no dust left behind. Need a free estimate? Book online via contact or call us directly. Serving Andover, North Andover, Lawrence, and nearby towns, we tailor each cleaning to your home’s needs.