Air duct cleaning, sealing, and indoor air quality testing for homes across Marin and Sonoma County since 1986.
Much of Marin and Sonoma is built on post-war ranches and mid-century homes whose original flex ductwork has spent fifty years sagging through hot attics and damp crawlspaces, leaking the air you paid to heat or cool. Add the fine smoke that settled into homes during the Tubbs and Kincade fires, valley pollen, and the coastal fog that keeps west-county houses sealed and damp, and the air circulating through your vents is rarely as clean as it should be. John Owens Services measures what is actually moving through your system, then cleans, seals, or filters it so every room breathes easier.
Cleaning removes built-up dust, debris, and allergens, while sealing fixes leaks that let conditioned air escape, so they solve different problems. We diagnose which you need with a same-day inspection and duct-pressure test rather than guesswork.
Aeroseal seals leaks from inside the ductwork in one visit and is ideal for the aging flex runs found in many mid-century homes here, where most owners see at least a 20% drop in duct leakage. As a licensed contractor (CA #501853), we measure the leakage before and after so you can see the difference.
After smoke events, fine particulate settles deep in ductwork and recirculates every time the system runs, so cleaning the ducts and upgrading filtration helps clear what is being pushed back into your rooms. We test your indoor air quality before and after to confirm the improvement.
Yes. Our trucks arrive fully stocked, so most duct cleaning, sealing, and air-quality work is handled in a single visit from Novato to Santa Rosa, Petaluma to San Rafael.
From the Marin coast to Sonoma wine country, we bring honest plumbing, heating & cooling to homeowners across both counties — based locally since 1986.