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 San Pablo
Air duct cleaning in San Pablo typically runs $350 – $650 for a whole-home system, with most residential jobs completed in a single visit. We serve San Pablo from our Bay Area dispatch office, and our crews know the flatlands near San Pablo Bay where crawlspace moisture turns ductwork into a mildew problem most inland techs never see. Call (361) 326-5060 for a free written estimate, or read on to understand why coastal fog and 1940s tract housing make San Pablo duct cleaning a different job than Richmond or Pinole.
Our technicians are background-checked, uniformed, and equipped with Rotobrush rotary systems and Nikro negative-air machines, the same tools commercial crews use. Every job gets a written price before we start and is backed by our 365-Day Done Right Promise. If the work fails within a year, we return and make it right at no charge, including a free second visit. That’s The Garrison Standard, and it’s how we’ve operated since 2004.
Why Hollis Air Duct Cleaning Is San Pablo’s Preferred Air Duct Cleaning Company
We’ve built our reputation in San Pablo by showing up inside the quoted window, pricing in writing, and leaving the site clean. Our Air Duct Cleaning team understands the local housing stock: thousands of post-WWII tract homes built for Richmond shipyard workers, where original 1940s-50s heating systems often survive alongside later HVAC retrofits. These older ducts tend to have loose, asbestos-wrapped joints and heavy sediment from decades of use, so cleaning requires careful containment and sometimes partial duct replacement. A tech who treats your San Pablo home like a standard suburban build will miss what matters.
Our phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops, no callback queues, no waiting until Monday. Scheduling and dispatch are coordinated from our San Francisco Bay Area office, with crews serving San Pablo locally. When you book with Hollis, you know who is walking into your home before they arrive.
Roy Castellanos leads Hollis Air Duct Cleaning with the same discipline he applies to every job: state the price, do the work by the book, stand behind it for a full year. That’s not a slogan. It’s written on every invoice.
Vent Cleaning in San Pablo
Vent Cleaning in San Pablo means more than brushing off register covers. In this city’s 1940s-1950s stucco tract homes, supply and return vents often connect to ducts that haven’t been opened in decades. Sediment, pet dander, and coastal pollen accumulate behind the grilles, and the marine air carries enough moisture to let mildew colonize the first few feet of duct past the vent. We remove each register, agitate the duct run with rotary brushes, and extract debris under negative pressure so nothing blows back into your living space.
A typical residential vent cleaning in San Pablo runs $150 – $300 for a whole-home job, depending on register count and accessibility. We don’t price per vent. One flat price per system, agreed before work starts.
Supply Vent Cleaning
Supply vents push conditioned air into your rooms. In San Pablo’s older homes, these runs often pass through uninsulated wall cavities where bay fog seeps in during winter. We find rust staining and mildew film at the boot connections more often here than in drier inland cities. Our rotary brush system breaks that buildup loose, and HEPA-filtered negative air carries it out of your home.
Return Vent Cleaning
Return vents pull air back to the handler, and they’re the first place you’ll notice a blockage. Heavy dust mats, remodel debris from past renovations, even rodent nesting material in the Bay Area’s mild climate. We inspect with a camera when we suspect a restriction, then clean and verify airflow restoration before we leave.
Air Duct Repair in San Pablo
Air Duct Repair in San Pablo addresses the damage that decades of bay moisture and original construction shortcuts have caused. The 1940s-50s tract homes that dominate this market were built fast for shipyard workers, with duct seams sealed by tape that has now dried, cracked, or delaminated. In crawlspaces, that deterioration lets fog-laden air infiltrate the system, rusting metal trunks and saturating fiberglass insulation. Repair means sealing with mastic, replacing degraded flex runs, and sometimes rebuilding sections of the distribution system where corrosion has compromised structural integrity.
Typical air duct repair in San Pablo ranges from $200 for localized sealing to $1,200+ for trunk line replacement in a crawlspace. We inspect with a video camera, show you what we found, and give you a written price before any repair begins.
Duct Sealing and Mastic Application
Mastic is a thick, water-based sealant we brush onto joints and seams. Unlike foil tape, which fails in damp crawlspaces, mastic remains flexible and forms a permanent air barrier. In San Pablo’s fog-prone flats, this matters. Every seam we seal stops unfiltered crawlspace air from entering your ducts.
Flex Run and Trunk Replacement
When rust scale or mildew biofilm has compromised a duct section, cleaning isn’t enough. We cut out the damaged material and install new, insulated flex or sheet metal, sealed at every joint. Our crews carry Aprilaire and Abatement Technologies filtration components to restore proper airflow and particle capture when we reconnect the system.
Trusted Brands We Service in San Pablo
We stock parts and filtration products from Honeywell, Aprilaire, and Guardsman, with Rotobrush agitation tools and Nikro negative-air machines on every van. For San Pablo homeowners, this means no waiting for a parts order from out of state. When we find a failed component during your cleaning or repair, we can often replace it same visit. Our technicians explain what each brand does and why we’re recommending it for your specific system, not hand you a generic spec sheet. That’s The Garrison Code: explain the work, do it by the book, leave the customer informed.
Common Air Duct Cleaning Problems We See in San Pablo Homes
- Rusted trunk lines in crawlspace runs. In the flats near San Pablo Bay, ductwork that crosses unsealed crawlspaces pulls in fog moisture year-round. We commonly find rusted trunk ducts and mildew odors that worsen after winter rains, a basement-free, slab-and-crawlspace problem you won’t see in inland Contra Costa cities.
- Asbestos-wrapped joints in original 1940s-50s ductwork. Many San Pablo tract homes still have deteriorated insulation and exposed fiberglass or asbestos tape at seams. Disturbing these without proper containment risks fiber release into your home. Our crews are trained to identify and safely manage these materials.
- Mildew film from coastal humidity cycling. San Pablo’s mild, marine-influenced climate means heating systems run less than in extreme regions, but year-round circulation still pushes dust, pollen, and moisture through ducts. The coastal fog introduces dampness into crawlspaces and ductwork, promoting mold and mildew growth that a surface wipe won’t touch.
- Sediment redistribution from improper cleaning methods. Blowing compressed air through the registers without negative pressure containment just redistributes 70 years of sediment from the 1940s ducts into your living space. We see the aftermath: homeowners who paid for a “clean” and now have dust coating every surface.
Pricing for Air Duct Cleaning in San Pablo, CA
| Service | Typical Range in San Pablo |
|---|---|
| Whole-home air duct cleaning (residential) | $350 – $650 |
| Vent cleaning (all registers) | $150 – $300 |
| Video inspection | $75 – $150 (often waived with cleaning) |
| Duct sealing with mastic | $200 – $500 |
| Flex run or trunk repair/replacement | $200 – $1,200+ |
| Commercial system cleaning | $500 – $2,000+ |
What moves the price: accessibility of your crawlspace or attic, number of registers and returns, condition of existing ductwork, and whether we find damage requiring repair. We don’t bait with a low teaser and upsell at the door. The price is written down before any work starts, and it does not move. Call (361) 326-5060 for your exact quote. Estimates are free.
We Also Serve Cities Near San Pablo
Our crews cover San Pablo and surrounding communities including El Sobrante, Richmond, Pinole, and El Cerrito. Each area has its own housing stock and climate factors. Richmond shares San Pablo’s bayfront moisture issues, while Pinole and El Cerrito see more varied terrain and foundation types. We adjust our approach to what your specific home needs, not a one-size-fits-all protocol.
Serving San Pablo, CA - Our Local Coverage Area
We’re based in the San Pablo 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 San Pablo
Bay fog has introduced moisture into your crawlspace duct runs, and mildew is colonizing the interior surfaces. When the heater kicks on, it pushes that odor through your supply vents. A fogging “sanitizer” sprayed into the ducts without source removal won’t fix it, because the rust and biofilm in the crawlspace trunk line never actually comes out. We set up negative pressure with HEPA filtration, agitate the full system including crawlspace trunks, and remove the contamination at its source. Call (361) 326-5060 if you’re smelling this, we’ll inspect and quote.
Many do. Original ductwork in Richmond shipyard housing was sealed with asbestos-containing tape or wrapped with asbestos insulation. We inspect for these materials before disturbing anything. If we find deteriorated asbestos wrap, we contain the work area and follow abatement protocols, or refer to a licensed abatement contractor if removal is required. We don’t guess, and we don’t cut corners on safety.
Source removal versus surface masking. A real cleaning uses mechanical agitation, rotary brushes, and negative-air extraction to physically remove debris, rust scale, and biofilm from duct walls. A fogging chemical coats surfaces temporarily but leaves the underlying contamination. In San Pablo’s humid crawlspaces, that mildew smell returns within weeks because the root problem, moisture-laden sediment in the trunk line, was never extracted. We don’t sell fogs as a substitute for cleaning. If your ducts need sanitizing after source removal, we discuss it as a separate step with its own purpose and price.
Every 3 – 5 years for most homes, sooner if you have pets, allergies, or visible mold. The coastal fog accelerates moisture problems in crawlspace duct runs, so San Pablo homes may need more frequent inspection than drier inland properties. If you smell mustiness, see dust plumes from registers, or notice uneven heating, schedule an inspection regardless of elapsed time. Call (361) 326-5060 and we’ll assess whether cleaning or repair is the right next step.
Yes. Dryer vent cleaning is a separate service we offer, and it’s particularly relevant in San Pablo’s older homes where dryer ducts may run through unconditioned crawlspaces or exterior walls exposed to bay moisture. Lint accumulation plus humidity creates a clog-prone, fire-risk situation. We clean the full run from dryer to termination, verify airflow with a meter, and note any corrosion or damage in the duct. A typical dryer vent cleaning in San Pablo runs $120 – $200.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving San Pablo and the Bay Area since 2004.