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 Cleaning Across Cotati
Air duct cleaning in Cotati typically runs $450-$850 for a full residential system, with most homes falling in the $550-$700 range depending on duct accessibility and whether video inspection reveals moisture damage or wildfire smoke residue. Our crews are dispatched from the San Francisco Bay Area office and serve Cotati directly, carrying the equipment and documentation tools needed for homes in this specific fog-belt climate. If you’re smelling damp at your registers or your HVAC kicked up dust after the last fire season, call us at (469) 972-3151. We’ll give you a written price before any work begins, and that price won’t change when we arrive.
We’ve worked in the ranch-style homes off East Cotati Avenue, the neighborhoods near the Laguna de Santa Rosa, and the older tracts around Old Redwood Highway. Cotati’s 1960s and 1970s housing stock presents specific challenges: original fiberglass-lined sheet-metal ductwork, flex-duct deterioration, and the chronic humidity that seeps in from the Petaluma Gap. Our Air Duct Cleaning team knows what to look for here because we’ve documented it for insurers, for homeowners, and for our own records across hundreds of Cotati jobs.
Why Kestrel Air Duct Cleaning Is Cotati’s Preferred Air Duct Cleaning Company
We’ve built our reputation in Cotati on one thing: doing what we said we’d do, at the price we said we’d do it, with a guarantee in writing. The Kingswell Guarantee, which governs every job we’ve performed since 2004, requires four things: a written price before work begins, arrival in the window we promised, a clean job site when we leave, and a written guarantee with a free return visit if the work fails. No exceptions.
Our technicians are background-checked and uniformed, and they arrive with Rotobrush rotary brush systems, Nikro negative-pressure units, and Abatement Technologies HEPA filtration. These aren’t shop vacs from a hardware store. The Rotobrush dislodges debris at the duct wall through mechanical agitation. The Nikro pulls that debris out under controlled negative pressure so it doesn’t re-enter your living space. The Abatement HEPA system captures particles down to 0.3 microns. We explain each tool before we use it because Cotati homeowners deserve to know what they’re paying for.
Calls are answered by a live person, 24/7. Not a queue. Not an automated system. A real conversation, any time of day.
Our 365-Day Done Right Promise means that if the work falls short within that year, we return and make it right at no charge. It’s documented in writing on every single job. This isn’t a courtesy we extend at our discretion. It’s a standing commitment, and it’s how we’ve operated since Dale Whitmore founded the company under the Kingswell Guarantee in 2004.
Air Duct Inspection in Cotati
Air Duct Inspection in Cotati begins with understanding this city’s specific failure modes: the Petaluma Gap’s persistent humidity, the aging fiberglass-lined ductwork in 1960s ranch homes, and the embedded wildfire smoke particulate from the Tubbs and Kincade fires that still circulates in systems that were never properly cleaned. A typical inspection for a Cotati home runs $175-$275 and includes video documentation of the full duct run, moisture readings at supply and return plenums, and a written assessment of whether cleaning will suffice or if replacement is necessary.
Video Documentation for Insurance
We use push-camera systems to record the interior condition of your ducts in real time. For Cotati homes with moisture damage, this footage becomes the basis of insurance claims. After a winter storm left standing water in a crawlspace off Laguna de Santa Rosa, a homeowner on Valparaiso Avenue called us because their supply registers smelled damp. Our tech used a camera inspection to find the original 1970s fiberglass-lined spiral duct had sagged and held water; after source removal with agitation tools under negative pressure and HEPA filtration, we documented the failed liner with photos and a moisture report that the insurer accepted for full duct replacement rather than cleaning. We installed new sealed flex runs, rebalanced the air handler’s MERV rating, and cleared the lint pathway to the dryer vent as a courtesy.
Moisture and Smoke Assessment
Our inspections specifically test for the two conditions that define Cotati ductwork: condensation-driven biological growth in supply plenums, and wildfire smoke particulate embedded in blower motors and return ducts. Surface dust is common everywhere. These two are Cotati-specific, and missing them means a cleaning that doesn’t solve the actual problem.
Residential Air Duct Cleaning in Cotati
Residential Air Duct Cleaning in Cotati addresses the full HVAC distribution system: supply ducts, return ducts, the air handler cabinet, blower motor, and registers. For a typical Cotati home, this service runs $450-$850, with most jobs landing between $550-$700. Homes with extensive flex-duct deterioration, moisture damage requiring source removal, or heavy wildfire smoke residue may run higher. We give you the exact price in writing before we touch a single vent.
Negative-Air Extraction with HEPA Filtration
We connect a Nikro negative-air machine to your duct system, creating suction that pulls dislodged debris directly into a contained collection chamber. The Abatement Technologies HEPA filtration captures particles that would otherwise re-circulate through your home during cleaning. This matters in Cotati because disturbed mold spores or wildfire ash need containment, not redistribution.
Rotary Brush Agitation
The Rotobrush system sends a rotating brush through each duct run, mechanically scrubbing the interior walls where debris adheres. In Cotati’s older fiberglass-lined ducts, we adjust brush tension carefully: too aggressive and the liner delaminates, too light and the biological growth remains. Our technicians are trained to read the camera feed in real time and adjust accordingly.
Trusted Brands We Service in Cotati
We clean and maintain systems using Honeywell, Aprilaire, and Guardsman filtration and indoor-air-quality products. For Cotati homeowners dealing with the Petaluma Gap’s chronic humidity, we often recommend Aprilaire whole-home dehumidification integrated with the HVAC system, or Guardsman upgraded filtration media with a higher MERV rating to capture the fine particulate that wildfire smoke leaves behind. We stock these products locally so there’s no multi-week wait for parts. If your system needs a filtration upgrade after cleaning, we can typically install it during the same visit.
Common Air Duct Cleaning Problems We See in Cotati Homes
- Fiberglass liner delamination from chronic moisture. The original 1960s and 1970s ductwork in Cotati’s ranch homes used fiberglass-lined sheet metal. When the Petaluma Gap’s humidity causes repeated condensation, that liner separates from the metal shell and traps mold. Standard cleaning can’t restore it. We document this with camera footage and moisture readings for insurance replacement.
- Biological growth in supply plenums without any flood event. Homes near the Laguna de Santa Rosa, especially those on the western side of Cotati, routinely develop mold in supply plenums from ground-level moisture alone. Homeowners are often surprised because there’s no visible water damage. Our inspections catch this before cleaning begins.
- Embedded wildfire smoke in blower motors and return ducts. The Tubbs Fire in 2017 and Kincade Fire in 2019 pushed fine particulate deep into HVAC systems across Sonoma County. Surface duct cleaning doesn’t reach the blower motor or the return trunk where much of this residue settles. We disassemble and clean these components specifically.
- Flex-duct deterioration in aging systems. Cotati’s 40-60 year old ductwork often includes flex runs that have collapsed, torn, or disconnected at the collar. Cleaning these without repair spreads debris into the crawlspace or attic. We identify and note these failures during inspection.
Pricing for Air Duct Cleaning in Cotati, CA
Most Cotati homes fall between $550-$700 for a complete residential air duct cleaning. A smaller system with straightforward access might run $450-$550. Larger homes, systems with significant moisture damage requiring source removal, or jobs with heavy wildfire smoke residue can reach $750-$850. Commercial duct cleaning in Cotati starts around $1,200 and scales with system size.
What affects your price: the number of supply and return vents, whether your ductwork is accessible through crawlspace or attic, the presence of fiberglass liner delamination, and whether video inspection reveals conditions requiring documentation for insurance. We do not charge per vent. We quote one flat price per system, agreed in writing, before any work begins. No door-step revisions. No surprises.
Call (469) 972-3151 for a free estimate. We’ll ask about your home’s age, any recent storms or water intrusion, and whether you’ve noticed odors or increased dust since fire season. That conversation lets us give you an accurate range before we schedule.
We Also Serve Cities Near Cotati
Our crews work throughout Sonoma County, including Cotati and the surrounding communities of Rohnert Park, Petaluma, Santa Rosa, and Sebastopol. Each city presents its own duct conditions: Santa Rosa’s urban density and older commercial stock, Petaluma’s mixed Victorian and mid-century housing, Sebastopol’s rural properties with longer duct runs. We adjust our approach for each. If you’re in one of these neighboring cities and found this page because you’re comparing options, the same Kingswell Guarantee applies: written price, defined arrival window, clean job site, written guarantee with free return visit if needed.
Serving Cotati, CA - Our Local Coverage Area
We’re based in the Cotati 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 Cleaning in Cotati
We make this call based on camera inspection and moisture readings, not guesswork. If the fiberglass liner inside your ducts has delaminated or separated from the metal shell, cleaning will not restore it, and we document this condition with photos and moisture reports that insurers accept for replacement coverage. If the ductwork is intact metal or sealed flex with surface contamination only, negative-air extraction with HEPA filtration and rotary brush agitation typically restores it fully. Call (469) 972-3151 and we’ll schedule an inspection to give you a definitive answer.
The Laguna de Santa Rosa wetlands generate year-round ground-level humidity that seeps into crawlspace-level ductwork, especially in the original 1960s and 1970s homes with poor sealing. The Petaluma Gap channels cool, humid Pacific air directly into Cotati, producing condensation inside supply ducts even in mid-summer. This biological growth environment doesn’t exist in drier inland Sonoma cities like Windsor or Healdsburg. Standard cleaning removes the growth but won’t stop recurrence without addressing the moisture source, which we assess and document.
Yes, but surface cleaning alone is insufficient. Wildfire smoke particulate embeds in blower motors, return duct trunks, and the porous surfaces of fiberglass liners. Our process includes disassembly and mechanical cleaning of the blower assembly, rotary brush agitation through the full duct run, and negative-air extraction with HEPA filtration to capture the fine particles. We verify removal with post-cleaning camera inspection. For systems with heavy contamination, we also assess whether the MERV rating of your filtration needs upgrading to prevent re-circulation of residual particulate.
Our post-storm inspection includes full video documentation of all accessible ductwork, moisture readings at supply and return plenums, assessment of fiberglass liner condition, inspection of the blower motor and air handler cabinet for water intrusion or smoke residue, and identification of flex-duct deterioration or disconnection. You receive a written report with photo and video evidence, plus our recommendation: cleaning, targeted repair, or full replacement with documentation for insurance. The inspection itself takes 60-90 minutes and costs $175-$275.
Cotati’s fog-belt humidity means ducts here develop moisture-driven biological growth faster than in drier inland Sonoma County cities. The combination of Petaluma Gap moisture and Laguna de Santa Rosa wetland proximity creates conditions that warrant inspection every 3-4 years rather than the typical 5-7 year interval for drier climates. Homes with no water damage history still benefit from this frequency because the condensation is chronic and largely invisible until a camera inspection reveals it. Call (469) 972-3151 to discuss whether your home’s location and age suggest a shorter maintenance cycle.
Ready to get your Cotati home’s ductwork inspected or cleaned? Call Kestrel Air Duct Cleaning at (469) 972-3151. We’ll answer with a live person, ask the right questions about your home’s history and location, and give you a written estimate with one flat price per system. No per-vent pricing. No door-step changes. Just the Kingswell Guarantee, documented in writing, the same way we’ve operated since 2004.
Written by Dale Whitmore, Owner at Kestrel Air Duct Cleaning, serving Cotati under the Kingswell Guarantee since 2004.