William Winfield

William Winfield is co-owner of Gray Duct Heating, Cooling & Air Duct Cleaning and the reason the company is a family-owned and veteran-owned business. William served in the U.S. Army before spending 15+ years in Twin Cities real estate, an unusual background that turns out to be exactly right for HVAC: he has walked more crawlspaces, attics, and mechanical rooms than most technicians ever will, and he built a reputation for straight answers long before he was ever quoting a furnace.

Like Jason, William holds NADCA's ASCS (Air Systems Cleaning Specialist), CVI (Certified Ventilation Inspector), and VMT (Ventilation Maintenance Technician) certifications, plus CSIA's C-DET (Certified Dryer Exhaust Technician). Those aren't just letters, they are why Gray Duct can honestly say every clean and every install is done by an in-house, certified team.

William helps set the standard on the ownership side of the business: the 24/7 availability, the 10–12 year parts / 10 year labor warranty on installs, the 10% Heroes discount for active and retired military, and the Gray Duct commitment to leave every home cleaner than we found it.