Certified, Bonded & Insured
We take air duct cleaning seriously, so we invest in a rigorous training and certification process. We proudly display our credentials so you know you're getting true air duct cleaning specialists.
The Associations We Answer To
National Air Duct Cleaners Association
A proud member of NADCA, the highest standard-setting body for air duct cleaning. NADCA membership means we clean to a documented industry standard, not a shortcut.
Chimney Safety Institute of America
A member of the Chimney Safety Institute of America, the body behind the Certified Dryer Exhaust Technician program that keeps dryer-vent work safe and code-conscious.
Trained to a Documented Standard
Air Systems Cleaning Specialist
The core NADCA certification for cleaning HVAC air systems the right way, trunk lines, furnace, and blower wheel included.
Certified Ventilation Inspector
NADCA training in inspecting ventilation systems so problems are documented accurately before any cleaning begins.
Ventilation Maintenance Technician
NADCA credential covering the ongoing maintenance of ventilation systems to keep airflow and air quality where they should be.
Certified Dryer Exhaust Technician
The CSIA certification for dryer-exhaust work, the difference between a cleaned vent and a genuinely safer one.
Put Your Home in Certified Hands
When you buy or sell a home, you work with a licensed realtor. When you see a doctor, you expect a medical license. Hiring an air duct cleaning company should be no different, insist on a certified technician.
- Fully bonded, insured, and certified, the way you'd expect from any professional you let into your home.
- Every job is done to NADCA's negative-air standard, we don't skip trunk lines, the furnace, or the blower wheel.
- We show you photos before, during, and after, 50–100+ per job, so the results are yours to verify.
- If we find asbestos or mold, we refer you to the right specialist and return to clean once it's resolved.
Want to know how to spot a company that cuts corners? Read our guide to avoiding air duct cleaning scams.
Schedule With a Team You Can Trust
Book a certified Gray Duct technician for your air duct, dryer vent, or HVAC service across the Twin Cities metro.