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 Redwood City
Air duct cleaning in Redwood City typically runs $350 – $850 for a full residential system, with most homes falling in the $450 – $650 range depending on duct age, accessibility, and whether mold remediation is needed. We’re usually scheduling 2 – 3 days out for standard appointments, and our crews know the Peninsula well enough to navigate the parking restrictions around downtown’s historic core without burning your morning.
We’ve been sending Air Duct Cleaning crews through Redwood City long enough to know the difference between a Farm Hill ranch with accessible attic ducts and a Mount Carmel Victorian where the original galvanized runs through a crawlspace you can barely turn around in. Our dispatch is coordinated from our San Francisco Bay Area office, but the technicians who show up at your door live here, work here, and understand that Redwood City’s microclimate isn’t a single thing. It’s fog and mold spores on the west side, baked dust on the east, and sometimes both in the same week.
Call (361) 326-5060 for a free estimate. We’ll give you a written price before any work starts, and that number doesn’t move when the van is in your driveway.
Why Hollis Air Duct Cleaning Is Redwood City’s Preferred Air Duct Cleaning Company
We’ve built our reputation in Redwood City on showing up inside the window and pricing in writing, every time. The Garrison Standard doesn’t allow for “we’ll see when we get there” quotes. Our technicians are background-checked, uniformed, and trained on Rotobrush rotary brush systems and Nikro negative-air machines, the same equipment commercial crews use on larger jobs. When we leave, the site is clean and the price is what we said it would be.
Our 365-Day Done Right Promise covers every job in writing. If the work fails within a year, we come back and make it right at no charge, including a free second visit. No negotiation, no runaround. That’s been our standard since 2004, and it’s why Redwood City homeowners who’ve been burned by bait-and-switch pricing elsewhere tend to stick with us.
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 to get on the schedule.
Commercial Air Duct Cleaning in Redwood City
Commercial Air Duct Cleaning in Redwood City covers office buildings, retail spaces, medical clinics, and the mixed-use developments popping up along Broadway and Veterans Boulevard. These systems are larger, often run on rooftop package units, and accumulate debris faster due to higher occupancy and constant HVAC cycling. A typical commercial job in Redwood City runs $1,200 – $3,500 depending on square footage, system complexity, and whether the building requires after-hours scheduling to avoid disrupting tenants.
Multi-Tenant Buildings and Shared Systems
Redwood City’s denser downtown and newer transit-oriented developments often have shared duct mains serving multiple suites. Our crews isolate each zone with dampers before cleaning, so debris from one tenant’s space doesn’t redistribute into another’s. We document the work with before-and-after photos of each branch, which property managers appreciate when lease renewals come up.
After-Hours and Weekend Scheduling
Many Redwood City businesses can’t shut down during operating hours. We schedule commercial work for evenings and weekends at no additional cost, and our written price holds regardless of when the job happens.
Air Duct Cleaning Services in Redwood City
Air Duct Cleaning Services in Redwood City address the full spectrum of what moves through your ducts: dust, pollen, construction debris from decades of remodels, mold spores fed by west-side marine moisture, and the fine particulate that gets baked onto duct walls during east-side heat waves. A typical residential full-system cleaning in Redwood City runs $450 – $650 for a single HVAC system, with older homes or those needing mold remediation trending toward the higher end.
Supply and Return Duct Cleaning
Supply ducts push conditioned air into your rooms; returns pull it back. Both need attention, but returns typically hold more debris because they’re the intake path. In Redwood City’s older homes, we often find return ducts pulling dust from crawlspaces through cracked joints, especially after seasonal ground shifts. We clean both sides and seal the leaks we can access.
Video Inspection and Documentation
We camera-inspect ducts before and after cleaning on request. You’ll see the buildup and the result. No guesswork, no taking our word for it. This is particularly useful for Redwood City homeowners dealing with recurring dust issues or preparing a home for sale.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Redwood City
Our equipment roster includes Rotobrush rotary brush systems for mechanical agitation, Nikro negative-air machines for contained debris removal, and filtration products from Honeywell, Aprilaire, and Guardsman. We don’t show up with hardware-store vacuums and a prayer. For Redwood City customers, this means we can source replacement components and filtration upgrades quickly, without waiting on out-of-area suppliers. When a Guardsman HEPA filter or Honeywell media cabinet needs swapping during a cleaning, we typically have it on the truck or can get it next-day from our Peninsula supplier relationships.
Common Air Duct Cleaning Problems We See in Redwood City Homes
- Moisture-fed mold in west-side ducts. Emerald Hills and Woodside Plaza catch cool, foggy marine air that keeps duct interiors damp enough for mold spore colonies. A dry-brush cleaning won’t touch it. We use HEPA-contained negative-air systems and, when needed, apply EPA-registered antimicrobial treatments that won’t degrade duct lining.
- Baked-on dust in east-side systems. North Fair Oaks and Farm Hill see summer temperatures pushing 90°F+, which hardens dust and pollen onto galvanized duct walls. Standard suction alone won’t remove it. Our Rotobrush agitation breaks the bond before vacuum extraction.
- Unsealed original ductwork in Redwood Village and Roosevelt. These 1950s neighborhoods often have galvanized supply and return runs installed without mastic sealing or proper joint wrapping. Ground shifts after the first heavy rains crack what little sealant exists, pulling crawlspace debris directly into living spaces.
- Historic downtown buildings with restricted modification access. Mount Carmel and downtown Victorians fall under preservation rules that limit duct replacement. Cleaning becomes the primary maintenance option, but tight crawlspaces and plaster walls force creative equipment routing and smaller-tool deployment.
Pricing for Air Duct Cleaning in Redwood City, CA
Here’s what air duct cleaning costs in Redwood City’s market, based on the jobs we’ve priced and completed here:
| Service | Typical Range in Redwood City |
|---|---|
| Residential full-system cleaning (single HVAC) | $450 – $650 |
| Residential with mold remediation or antimicrobial treatment | $650 – $850 |
| Older home with galvanized duct access issues | $550 – $750 |
| Commercial full-system cleaning | $1,200 – $3,500 |
| Dryer vent cleaning (standalone) | $120 – $180 |
| Video inspection add-on | $75 – $125 |
What moves you within these ranges: duct material and age, accessibility, whether mold is present, and whether the system has been cleaned before. First cleanings on 50-year-old ducts take longer than maintenance cleanings on 10-year-old flex duct. We assess on site, put the price in writing, and don’t start until you approve it. No per-vent pricing, no add-ons at the door, no “we found a problem” upsells. Call (361) 326-5060 for a free estimate.
We Also Serve Cities Near Redwood City
Our crews regularly work in Redwood City and the surrounding Peninsula communities: Atherton, Menlo Park, San Carlos, and Palo Alto. Each shares some of Redwood City’s challenges, but none duplicate that east-west microclimate split. If you’re in one of these cities and your ducts are showing similar symptoms, we apply the same written-price, written-guarantee standard.
Serving Redwood City, CA - Our Local Coverage Area
We’re based in the Redwood City 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 Redwood City
Redwood City’s sharp east-west gradient forces us to use different cleaning strategies within the same job day. West-side neighborhoods like Emerald Hills get foggy marine air that feeds mold spores in ducts, so we deploy HEPA-contained negative-air systems and antimicrobial treatments. East-side areas like North Fair Oaks hit 90°F+ dry heat that bakes dust onto duct walls, requiring rotary brush agitation to break it free before extraction. Neighboring San Carlos and Menlo Park don’t experience this extreme split, so their cleaning protocols are more uniform. Call (361) 326-5060 if you’re unsure which conditions affect your home.
Yes, but shared stack systems require unit-by-unit isolation to prevent lint and debris from one unit re-entering another through pressure imbalances. We seal each connection point before cleaning and verify airflow at every termination. This takes longer than single-family vent cleaning but protects all units in the stack. Redwood City’s denser downtown and newer multi-family developments along Veterans Boulevard commonly use this configuration. Call (361) 326-5060 to schedule an inspection of your building’s stack system.
Historic preservation rules in downtown Redwood City and the Mount Carmel neighborhood restrict duct modifications and replacement, but they don’t prevent cleaning. We work within the existing infrastructure, using smaller rotary tools and flexible hoses where access is tight, and we avoid any alteration to protected building fabric. If your building is subject to these rules, we’ll note it during our initial assessment and adjust our approach accordingly. Call (361) 326-5060 to discuss your specific building’s requirements.
Eichler-style homes in Woodside Plaza and Farm Hill typically have minimal ductwork, often limited to a small forced-air system for cooling or a few vent runs supplementing radiant heat. Cleaning is usually straightforward and lower-cost, running $250 – $400, but the ductwork that does exist is often original and unsealed. We inspect for leaks that could draw attic or crawlspace air, seal what we can access, and verify that your limited duct runs aren’t working against your radiant system’s efficiency. Call (361) 326-5060 for an assessment of your specific setup.
Redwood Village and Roosevelt homes built in the 1950s often have original galvanized ductwork installed without proper sealing. After the dry season, the first heavy rains cause soil expansion and foundation settling that cracks existing joint seals. This creates negative pressure pathways that pull crawlspace dust and debris directly into your supply air. We see this pattern every autumn in these neighborhoods. Our crews clean the accumulated debris, camera-inspect for new leaks, and seal compromised joints with mastic rated for duct applications. Call (361) 326-5060 to schedule a post-rain inspection if you’ve noticed increased dust after storms.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Redwood City since 2004.