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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Before
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Before
AfterAir Duct Cleaning Company in Redwood City, CA
Air duct cleaning in Redwood City runs $450 – $850 for a typical single-system home, with most jobs scheduled within a few days of calling. What separates Redwood City from other Peninsula markets is the microclimate: cool, fog-laden marine air in the west and dry inland heat in the east create a combination of moisture-fed mold spores and baked-on dust that few other Bay Area cities match. Hollis Air Duct Cleaning dispatches crews from our San Francisco Bay Area office to handle these conditions with Rotobrush rotary systems and Nikro negative-air machines, and every homeowner gets a written price before we start. Call (361) 326-5060 for a free estimate.
Why Redwood City Homes Are Different
Redwood City sits at the foot of the Santa Cruz Mountains, and that terrain creates a sharp east-west climate divide you won’t find in neighboring San Carlos or Menlo Park. West-side neighborhoods like Emerald Hills and Woodside get cool, foggy marine air that pushes moisture into duct systems. East-side areas like North Fair Oaks hit 90°F+ in summer, baking dust onto duct interiors until it cakes hard. The same crew might clean moisture-compromised flex duct on one call and heat-caked galvanized steel on the next.
The housing stock compounds this. Downtown and Mount Carmel still hold early-1900s bungalows and Victorians with original, undersized galvanized ducts or retrofitted flex runs. Many are subject to historic preservation rules that restrict modifications. In Woodside Plaza and Farm Hill, 1950s – 60s Eichler-style tracts use radiant floor heating with minimal ductwork, so cleaning is often paired with sealing or filtration upgrades rather than a standard whole-house job. Redwood City’s green building codes also mean duct cleaning frequently ties into energy audits or permit work, unlike simpler markets.
We’ve found that homes in Redwood Village and Roosevelt often have 1950s ductwork installed without proper sealing. After the first heavy rains following the dry season, ground shift cracks those seals and pulls dust from the crawlspace into the living space. That’s not a generic problem; it’s a Redwood City pattern we see every fall.
Our Main Redwood City Services
Most Redwood City homeowners call us for one of three jobs. Each has its own page with detailed pricing and local conditions.
Air Duct Cleaning in Redwood City
We clean the full supply and return duct network with a Rotobrush rotary brush system that agitates debris off duct walls, paired with a Nikro negative-air machine that pulls it out of the house rather than redistributing it. In Redwood City’s mixed housing stock, we often find original galvanized ducts in downtown Victorians that require gentler brush heads, and flex duct in retrofitted bungalows that needs careful handling to avoid tearing. Every job includes before-and-after photos of your own ducts, and the price is written before we touch anything. Air Duct Cleaning in Redwood City
Dryer Vent Cleaning in Redwood City
Dryer vent cleaning in Redwood City addresses lint buildup that restricts airflow and creates fire risk, especially in homes with long vent runs through crawlspaces or exterior walls common in the Eichler tracts and downtown conversions. We use rotary brushes and high-velocity air tools to clear the full run from appliance to termination, then verify airflow with a meter. Redwood City’s coastal humidity can also cause moisture retention in vent terminations on west-facing walls, which we check and document. Dryer Vent Cleaning in Redwood City
Duct Sealing in Redwood City
Duct sealing closes the leaks that pull unconditioned air from attics and crawlspaces into your living space. In Redwood City, we apply mastic sealant and mechanical fasteners to joints and seams, with particular attention to the 1950s-era ductwork in Redwood Village and Roosevelt where original installation standards were minimal. Sealing is often the most cost-effective upgrade for homes with high energy bills or uneven heating, and it pairs well with cleaning since the ducts are already exposed. Duct Sealing in Redwood City
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Redwood City
We stock parts and filters from Honeywell, Aprilaire, and Guardsman for common Redwood City systems, and we service all major residential brands. Most filter replacements and minor part swaps happen on the first visit. See our brands for the full list.
Pricing for Air Duct Cleaning Company in Redwood City, CA
| Service | Typical range in Redwood City |
|---|---|
| Whole-house air duct cleaning (single system, up to 12 vents) | $450 – $650 |
| Whole-house air duct cleaning (two systems or 13 – 20 vents) | $650 – $850 |
| Dryer vent cleaning (standard run, single story) | $120 – $180 |
| Dryer vent cleaning (long run, multi-story, or rooftop termination) | $180 – $280 |
| Duct sealing (single system, mastic application) | $800 – $1,400 |
| Duct sealing (two systems or complex access) | $1,400 – $2,200 |
| AC coil cleaning (included with duct cleaning) | $150 – $250 |
| AC coil cleaning (standalone service) | $250 – $400 |
| Sanitizing treatment (applied after cleaning) | $75 – $150 |
| Filter replacement (standard 1″ pleated) | $15 – $35 per filter |
| Filter replacement (4 – 5″ media filter) | $45 – $85 per filter |
Prices in Redwood City push toward the higher end when homes have original galvanized ductwork requiring delicate handling, when access is limited by historic-preservation restrictions, or when green-code compliance adds documentation steps. The price we write down before work starts is the price you pay. No per-vent add-ons, no equipment charges that appear after the crew arrives.
Neighborhoods We Serve in Redwood City
We schedule Redwood City jobs with routing that keeps crews in the same microclimate zone when possible, reducing drive time and keeping arrival windows tight. Most appointments are available within three to five business days.
- Mount Carmel
- Emerald Hills
- Woodside Plaza
- Redwood Village
- Roosevelt
Service Area – Cities Near Redwood City
Our crews cover the full Peninsula corridor from the San Francisco Bay Area office, with regular routes through Atherton, CA, Menlo Park, CA, San Carlos, CA, and Palo Alto, CA. Scheduling is coordinated across this zone, so a crew finishing early in Menlo Park can often reach a Redwood City afternoon appointment ahead of window.
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 Company in Redwood City
Standard cleaning and dryer vent cleaning do not require permits. If your home is in a historic preservation zone downtown and duct sealing or modification is involved, we handle the permit research and include any required documentation in the written price. Call (361) 326-5060 and we’ll confirm your specific situation.
Most Redwood City appointments are available within three to five business days. We route crews from the Peninsula zone, not across the Bay, so arrival windows are reliable and we don’t overpromise. Emergency dryer vent blockages get same-week priority when airflow is fully restricted.
Yes. We work west-side neighborhoods like Emerald Hills with moisture-focused inspection protocols, and east-side areas like North Fair Oaks with dry-dust agitation techniques. The equipment is the same; the approach adjusts to what we find in your specific duct system.
What happens when you call
- 1A real person answersNo phone trees - talk to a local air duct cleaning pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Redwood City Customers Say
"Dryer vent was packed with lint and took two hours to dry a load. Cleaned it out from the roof cap down. One cycle again."
- Paula Q."No sales pitch. Told me which parts of the system were fine and only cleaned what needed it."
- Ted L."They checked each section with a camera and showed me the dust before and after. Thorough and honest."
- Nicole H.