Air duct cleaning, duct 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.
Cleaning removes the settled ash and soot a system has pulled in and is recirculating, and we usually pair it with better filtration or duct sealing so the next smoke event stays out. We serve all of Marin and Sonoma and can often come the same day during fire season.
Cleaning clears the dust, debris, and buildup inside the runs, while duct sealing closes the leaks that let conditioned air, attic dust, and crawlspace damp into the system before it reaches your rooms. Older Marin and Sonoma ductwork often needs both, and we use Aeroseal for the sealing.
These homes often have original sheet-metal ducts, weak returns, and gaps that pull in unfiltered air, so cleaning plus sealing and upgraded filtration cut the dust, pollen, and odors actually circulating. Our licensed technicians (CA #501853) inspect the whole system before recommending anything.
From the Marin coast to Sonoma wine country, we bring honest plumbing, heating & cooling to homeowners across both counties — based locally since 1986.