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
AfterAir Duct Cleaning Company in San Carlos, CA
San Carlos homeowners typically pay $450 – $750 for whole-house air duct cleaning, with most jobs scheduled within a week and completed in a single visit. What drives the price isn’t the room count; it’s the condition of the ducting hidden beneath 1950s ranch homes and the moisture problems that Peninsula marine-layer fog creates in low-lying crawlspaces. At Hollis Air Duct Cleaning, we price every San Carlos job in writing before we touch anything, and we back it with our 365-Day Done Right Promise. Call (361) 326-5060 for a free estimate.
Why San Carlos Homes Are Different
San Carlos sits in a narrow valley between the Santa Cruz Mountains and the Bay, and that geography creates two distinct duct environments within the same ZIP code. West of El Camino, morning fog rolls in thick off the water and lingers until noon. The crawlspaces under those 1940s – 1960s ranch houses stay damp year-round, and we’ve found galvanized ducting in the flats off Laurel Street packed with mold spores and musty debris that inland crews rarely encounter.
Above 500 feet, toward the hills, the sun burns off the fog faster. Those homes dry out, but their original flex ducting turns brittle and cracks, pulling in dry-rot dust and pollen from the attic. The housing stock is almost entirely post-war single-story construction on raised foundations, meaning every duct run lives in a shallow crawlspace full of decades of accumulated grit, rodent droppings, and detached insulation. Many 1950s builds still vent dryers and bathroom fans into that same crawlspace, so a standard duct cleaning often reveals moisture problems that Redwood City or Menlo Park homes simply don’t have.
San Carlos also allows wood-burning fireplaces, uncommon on the Peninsula. During winter inversions, creosote-scented soot circulates through the HVAC system and settles in the ductwork. We regularly pull black, oily residue from returns in White Oaks and Alder Manor homes that have been heating with fireplaces for decades.
Our Main San Carlos Services
Most calls we get from San Carlos fall into three categories. Each has its own page with full pricing, process details, and neighborhood-specific notes.
Air Duct Cleaning in San Carlos
We clean supply and return ducts with a Rotobrush rotary brush system for the main trunk lines and a Nikro negative-air machine to pull dislodged debris out of the house entirely, not just redistribute it. In San Carlos, we pay special attention to the low returns in ranch homes, where decades of crawlspace dust gets drawn upward into living spaces. Every job includes before-and-after photos of your own ducts, not stock images. Air Duct Cleaning in San Carlos
Dryer Vent Cleaning in San Carlos
Dryer vent blockages are a leading cause of house fires, and San Carlos’s older homes compound the risk with long vent runs through crawlspaces and walls. We clear the full line from the back of the dryer to the exterior termination, then test airflow with an anemometer to verify the exhaust rate. If your vent terminates in the crawlspace, we’ll flag it and explain your options. Dryer Vent Cleaning in San Carlos
Duct Sealing in San Carlos
Leaky ducts in San Carlos crawlspaces waste conditioned air into spaces nobody lives in. We seal accessible joints with mastic and mechanical fasteners, then pressure-test the system to confirm the seal holds. For the tight duct systems in newer El Camino townhomes, we target the access panels and joint connections that flex during seasonal temperature swings. Duct Sealing in San Carlos
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 San Carlos
We stock parts and filters for Honeywell, Aprilaire, and Abatement Technologies systems, the brands most common in Peninsula homes. Most replacement filters and media arrive within 24 hours; specialized Abatement HEPA components typically take 48 hours. See our brands for the full list.
Pricing for Air Duct Cleaning Company in San Carlos, CA
| Service | Typical range in San Carlos |
|---|---|
| Whole-house air duct cleaning (single system) | $450 – $750 |
| Whole-house air duct cleaning (two systems) | $750 – $1,100 |
| Dryer vent cleaning (standard run) | $150 – $250 |
| Dryer vent cleaning (long run or crawlspace termination) | $250 – $350 |
| Duct sealing (partial, accessible runs) | $400 – $650 |
| Duct sealing (whole system) | $800 – $1,400 |
| HVAC blower motor cleaning | $120 – $180 |
| Return vent deep cleaning (per vent) | $35 – $55 |
| Sanitizer/deodorizer application | $75 – $125 |
| Crawlspace duct repair (minor, accessible) | $200 – $400 |
What pushes San Carlos jobs toward the higher end: shallow crawlspaces that require hand-crawling, detached insulation blocking access, and mold remediation prep before cleaning can begin. We inspect every system first, then write the price down. It does not move at the door.
Neighborhoods We Serve in San Carlos
We work across the full city, from the flatlands near the Caltrain corridor to the hillside streets above Brittan Avenue. Most San Carlos appointments are scheduled within 3 – 5 business days, with dispatch coordinated from our San Francisco Bay Area office.
- White Oaks
- Alder Manor
- Howard Park
- Las Balas
- Clearfield Park
Service Area – Cities Near San Carlos
Our crews work the full Peninsula corridor. We regularly schedule jobs in Belmont, MA, Redwood City, CA, Atherton, CA, and Menlo Park, CA, often routing multiple appointments on the same day to keep travel time down and arrival windows tight.
Serving San Carlos, CA - Our Local Coverage Area
We’re based in the San Carlos 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 San Carlos
No permit is required for standard residential air duct cleaning or dryer vent cleaning in San Carlos. Duct sealing that involves modifying the HVAC plenum or adding new returns may trigger a building permit; we flag those cases during the estimate and can refer you to the city’s permit desk if needed. Call (361) 326-5060 to discuss your specific setup.
Most San Carlos homeowners book 3 – 5 business days out. We do not overbook same-day slots we can’t keep. When you call, you’ll speak to a live person who can see real availability, not a callback queue. Scheduling is coordinated from our San Francisco Bay Area office, with crews dispatched locally.
We work in HOA communities throughout San Carlos, including several El Camino townhome associations. We carry general liability and workers’ compensation insurance, and we provide written proof of coverage on request. If your HOA requires advance notice or specific parking arrangements, we handle that coordination before we arrive, not while the truck is idling outside.
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 San Carlos 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.