Whole-system duct and dryer vent check with before-and-after photos - you see exactly what came out of your vents
That "$99 whole-house special" is a bait ad - the real number appears once they are in your hallway, or the "clean" is a shop-vac at the register. We photograph the inside of your ducts before and after instead.
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AfterFast, Reliable Air Duct Repair Across Sonoma
Air duct repair in Sonoma typically runs $350 – $900 for most common jobs, with full duct replacement in older retrofitted homes landing between $1,800 and $4,200 depending on the length of affected runs and access difficulty. Most repairs we handle are completed within a single visit, and we’re in Sonoma every week, so scheduling is straightforward. You reach a live person at (980) 447-2498 any time, day or night. No call center, no voicemail tag.
If your ducts are leaking, crushed, corroded, or carrying dust you can smell every time the blower kicks on, we’ll send a background-checked technician whose name and photo you receive before they arrive. Sonoma’s older housing stock and valley-floor conditions create repair needs that a generic duct company doesn’t see often enough to diagnose correctly. We do.
Why Linden Air Duct Cleaning Is Sonoma’s Preferred Air Duct Repair Company
We’ve worked on homes from the Victorian-era blocks around Sonoma Plaza out to the ranch houses past Boyes Hot Springs, and the problems we find here don’t match what you’d see in Petaluma or Novato. Sonoma’s unique position, sitting inside working vineyards on the valley floor, means ducts here accumulate stuff other cities never see. Sulfur fungicide residue. Post-wildfire ash from the Nuns and Glass fires. Marine-layer humidity that condenses inside old duct runs overnight. A tech who only knows cookie-cutter repair jobs will miss the root cause here and sell you something that doesn’t fix it.
Our Air Duct Repair crews carry professional-grade equipment from Nikro and Abatement Technologies, because Sonoma’s dual particulate load, agrochemical dust plus fire ash, requires real negative-pressure extraction and HEPA filtration, not a shop-vac and a fogging canister. Every repair we quote comes with a written price before any work starts, and every repair job includes our 365-Day Done Right Promise: if the fix doesn’t hold, we come back at no charge. That guarantee is in writing on every single job. Marcus Veale, who leads our repair team, insists on it.
When a Sonoma homeowner calls, they talk to a real person on the first ring, 24/7. We tell you who’s coming to your door before they arrive: name, photo, and a photo ID badge shown at the threshold. For people who are home alone, parents with young kids, or older homeowners, that specific proof of who’s at the door matters more than any slogan.
Ductwork Repair in Sonoma
Ductwork repair in Sonoma usually means finding and sealing leaks in aging runs, patching crushed or corroded sections, reconnecting joints that have pulled apart in retrofitted homes, and sometimes cutting out a short section of duct that’s too far gone to patch. In the older homes around Sonoma Plaza, where central HVAC was added decades after original construction, ducts often route through balloon-frame walls in ways that hide damage for years. A tear behind a plaster wall won’t show itself until your blower pushes conditioned air into the wall cavity instead of your living room.
Sealing and patching
Most repair calls in Sonoma involve leaks. Joints loosen, duct tape fails, and in homes near active vineyards, sulfur residue accelerates corrosion on uncoated sheet metal. We seal with mastic and foil tape rated for HVAC use, not duct tape, which fails within a couple of seasons here. A sealed system means the air you pay to heat or cool actually reaches the rooms.
Crushed or disconnected runs
We see this in crawlspaces under older Sonoma ranch homes, where duct runs get stepped on, knocked loose by plumbing work, or chewed through by rodents. The result: weak airflow at the registers and heated or cooled air dumping into the crawlspace. Our techs camera-inspect the run before recommending repair or replacement.
Duct Replacement in Sonoma
Duct replacement in Sonoma becomes necessary when the ductwork itself has failed beyond a reliable patch, which is common in Victorians and early 20th-century homes where original runs were never designed for central HVAC and have been patched repeatedly for fifty years. In those cases, sealing another leak is just buying time. Replacement costs more than repair, which is exactly why we give you an honest assessment, with camera footage showing what we found, before we recommend spending that kind of money.
When repair isn’t enough
If a stretch of duct is corroded through in multiple spots from sulfur residue, or if post-fire ash has ground itself into the interior lining, patching individual holes won’t stop the contamination coming off the duct walls. Full replacement of the affected run is the only fix that removes the source. We will never recommend replacement without showing you the evidence inside your own ducts.
Replacement for retrofitted homes
When we replace ductwork in a Victorian or early 20th-century Sonoma home, we account for the non-standard routing through balloon-frame walls. That’s slower, more careful work than swapping out runs in a 1980s ranch house. But doing it right means the new duct actually fits the house instead of forcing modern components into century-old framing.
Trusted Brands We Service in Sonoma
We work on systems built around Honeywell, Aprilaire, and Abatement Technologies components, along with Rotobrush and Nikro equipment for cleaning and extraction. Our Sonoma customers appreciate that we stock common fittings and repair materials on the truck, so most repairs don’t require a second visit for parts. If you have an older Aprilaire media cabinet or a Honeywell zoning system on a retrofitted home around Sonoma Plaza, we know how to work around it without breaking something else.
Common Air Duct Repair Problems We See in Sonoma Homes
- Sulfur residue in return ducts. Homes within a half-mile of active vineyards on the valley floor collect a pale, chalky residue that smells like a struck match on the first furnace start each fall. It’s corrosive to uncoated sheet metal over time, and it must be removed at the source, not fogged over.
- Marine-layer humidity cycling. The Petaluma Gap pushes morning fog into Sonoma, then warm afternoon air dries everything out fast. Inside older ducts, that cycle leaves mildew residue baked onto the duct walls, especially in retrofitted homes around Sonoma Plaza where overnight condensation collects in uninsulated runs.
- Post-wildfire ash in supply and return runs. Ash from the Nuns Fire and Glass Fire settled into ductwork across Sonoma. If nobody camera-inspected the full run length afterward, fine ash sits in the long retrofitted sections behind walls, stirring into the air every time the blower runs.
- Leaky retrofitted duct routing. Victorians and pre-war homes near Sonoma Plaza had central HVAC added long after construction, often routed through balloon-frame walls. The result is more joints, more turns, and more leak points than a purpose-built system, which means more repair calls for homeowners who wonder why one bedroom never heats up.
Pricing for Air Duct Repair in Sonoma, CA
Here’s what you can expect to pay in Sonoma’s market, using real numbers.
- Sealing a leaking joint or small tear: $180 – $320
- Patching a crushed or corroded duct section: $300 – $650
- Repairing a disconnected or separated run: $250 – $550
- Replacing a short run of flexible duct (under 10 feet): $450 – $900
- Full duct replacement in a retrofitted older home: $1,800 – $4,200
What moves the price is access. If the damaged section is in a crawlspace under a ranch home off Broadway, it’s faster than working behind plaster in a Victorian near Sonoma Plaza. We give you the price in writing before any work begins, and that price does not change at the end of the job. Call (980) 447-2498 for a free estimate.
We Also Serve Cities Near Sonoma
Our crews regularly run repair calls to Sonoma and the surrounding communities, including Boyes Hot Springs, Petaluma, Novato, and Cotati. If you’re a few minutes outside downtown Sonoma, give us a call and we’ll let you know when we’re next in your area.
Serving Sonoma, CA - Our Local Coverage Area
We’re based in the Sonoma area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Air Duct Repair in Sonoma
That smell is almost always sulfur fungicide residue, a chalky compound sprayed across Sonoma Valley vineyards from spring through harvest that gets pulled into return-air ducts and settles on the duct walls. When your furnace first fires up in fall, the heat bakes that residue and releases the odor. The fix is source removal: we set your system under negative pressure, agitate the residue loose from the duct walls, and pull it through HEPA filtration. A fogging sanitizer won’t remove the compound, which is why the smell comes back every year for homeowners who’ve tried that route. Call (980) 447-2498 and we’ll camera-inspect your return run to confirm what’s actually in there.
Yes, significantly. Older Sonoma homes had central HVAC retrofitted decades after original construction, often routed through balloon-frame wall cavities. Those runs have more joints, more turns, and more hidden leak points than purpose-built ducts, and damage behind plaster walls doesn’t show up at the registers. Repairing these systems means camera-inspecting first, then sealing or replacing sections with careful access work that doesn’t tear apart your walls more than necessary. A standard ranch-house repair approach won’t fit these homes.
No. In Sonoma specifically, the problems are sulfur fungicide residue, post-fire ash, and marine-layer mildew residue baked onto duct walls, and a fogging mist doesn’t remove any of those three. Fogging products are exactly that: a mist. The corrosive sulfur compound stays on the sheet metal. The ash stays caked behind long retrofitted runs. The mildew stays baked on. You’ll get a temporary smell improvement and the same problems within a season. Actual source removal, negative-pressure extraction with agitation and HEPA filtration, is how you fix the root cause, not mask it.
The Petaluma Gap pulls marine-layer fog into Sonoma most mornings, and then the valley burns off to warm, dry afternoons. Inside older, uninsulated duct runs, that cycle means overnight humidity spikes followed by rapid drying. The pattern bakes mildew residue onto duct walls and accelerates corrosion in uncoated sheet metal. A one-time blow-out doesn’t reverse years of that cycle. The fix is sealing leaks that let humid air in, repairing or replacing corroded sections, and cleaning the residue off the duct surfaces so it stops cycling through your air.
That depends on what our camera inspection finds. If ash settled into visible register boots and a short accessible run, a thorough cleaning with HEPA extraction may be enough. But many Sonoma homes haven’t had their long retrofitted runs inspected since the Nuns Fire or Glass Fire, and those are exactly where fine ash collected. If we find ash grinding into the interior lining of long runs behind walls, or if sulfur corrosion has already compromised the metal, replacement of the affected sections is the only honest fix. We’ll show you the footage before we recommend spending that money. Call (980) 447-2498 and we’ll walk you through it.
Written by Marcus Veale, Owner at Linden Air Duct Cleaning, serving Sonoma since 2004.