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 Los Altos
Air duct cleaning in Los Altos typically runs $350 – $650 for a full residential system, with most jobs completed in a single visit and a written price agreed before any work starts. Our crews dispatch from the San Francisco Bay Area office and serve Los Altos directly, carrying Rotobrush rotary systems and Nikro negative-air machines sized for the ranch-style homes and large-lot properties that define this market. If you’re near open land, an unpaved drive, or horse-zoned acreage, your ducts are loading with fine silica dust and oak pollen that standard suburban advice doesn’t account for. Call (361) 326-5060 for a free estimate.
Why Hollis Air Duct Cleaning Is Los Altos’s Preferred Air Duct Cleaning Company
We’ve been working Los Altos homes since 2004, and the pattern is consistent: large lots, mature systems, and dust loads that don’t match the “every 3-5 years” advice written for sealed tract housing. Our Air Duct Cleaning team knows the difference between a routine sweep and the diagnostic work these properties actually need.
Our technicians are background-checked, uniformed, and expected to operate under The Garrison Code: arrive inside the quoted window, price in writing, complete the job by the book, and leave the site clean. The 365-Day Done Right Promise backs every job in writing. If the work fails within a year, we return and make it right at no charge, including a free second visit. Phones are answered by a live person 24 hours a day, 7 days a week.
Dispatch and scheduling are coordinated from our San Francisco Bay Area office, with crews serving Los Altos locally. We know the neighborhoods: Old Los Altos, Loyola Corners, the rural-edge properties near Portola Valley. That local familiarity means we show up with the right equipment and the right expectations, not a one-size-fits-all approach.
Air Duct Repair in Los Altos
Air Duct Repair in Los Altos addresses the disconnected returns, illegal DIY splices, and undersized trunk lines that technicians regularly find hidden above ceilings in 1950s-70s ranch homes. Because so many properties here have been remodeled in layers, original ductwork often gets patched into additions without proper resizing, leaving back bedrooms starved while the front of the house over-pressurizes. Repair costs in Los Altos typically run $180 – $450 for accessible fixes like reconnecting a return or sealing a splice, and $500 – $1,200 when we need to open ceiling sections to access buried junctions or replace a section of old galvanized trunk.
Disconnected Returns and Hidden Splices
We find these constantly in Los Altos. A previous owner’s permitted addition tied into the original trunk without resizing the return path, or a flexible duct splice was shoved above a ceiling and forgotten. Our techs run a camera inspection first, locate the break, then establish negative pressure and reconnect or replace the damaged section with proper mastic-sealed joints.
Static Pressure Rebalancing After Remodels
When the original trunk line serves new rooms without recalculation, the system can’t move the rated airflow. We measure static pressure at the air handler and each register, then adjust dampers, add return pathways, or recommend trunk modifications so the farthest bedroom finally matches the rest of the house.
Ductwork Cleaning in Los Altos
Ductwork Cleaning in Los Altos removes the fine silica dust, oak pollen, and construction debris that accumulates in systems on large lots near open land, not the humidity-driven grime found in coastal Bay Area cities. Because these particles are small and light, they coat the air handler and return trunk without ever showing visible debris at the registers, so homeowners assume the system is clean when it’s already compromised. A full residential ductwork cleaning in Los Altos typically costs $350 – $650, with larger homes or systems with multiple zones running $700 – $950.
Negative-Air Method with Agitation Tools
We connect a Nikro negative-air machine to your trunk line, creating suction that pulls dislodged debris out of the system rather than pushing it into your living space. Rotary brushes from Rotobrush scrub the interior of rigid ducts while the negative-air collector captures the load. This is the same method commercial crews use, and it’s the only approach that handles the pollen and fine dust common to Los Altos’s rural-edge properties.
Camera Inspection and Documentation
Before we start and after we finish, we run a video camera through your trunk lines. You see what we see: the disconnected return, the pollen coating, the construction dust from last year’s remodel. After cleaning, you see the difference. We leave you with before-and-after photos of your own ducts, not stock images.
Trusted Brands We Service in Los Altos
Our equipment roster includes Rotobrush rotary brush systems for mechanical agitation, Nikro negative-air machines for controlled debris extraction, and filtration products from Honeywell and Guardsman for homeowners who want to upgrade their media filters after cleaning. We stock common filter sizes and replacement parts for these brands locally, so if your Los Altos home needs a filter upgrade or a damaged register replaced while we’re on site, we can handle it without a return trip. No waiting on shipped parts, no second appointment window.
Common Air Duct Cleaning Problems We See in Los Altos Homes
- Rural-edge dust and pollen loading: Fine silica from unpaved drive aprons and oak/grass pollen enter through open windows during shoulder seasons. The particles are too small to clog a filter quickly but coat the air handler and return trunk over time, reducing airflow and forcing the blower motor to work harder.
- Wood-heat outbuildings tied into the main system: Shops, barns, and detached offices on large Los Altos lots often share ducting or pull smoke and ash back toward the house when the main HVAC runs. A routine sweep won’t diagnose that cross-connection; camera inspection and static pressure testing will.
- Remodel-layer dead zones: A permitted addition in Old Los Altos or Loyola Corners leaves the original trunk undersized for the new rooms. The farthest bedroom starves for airflow while the front of the house over-pressurizes. Cleaning that skips inspection misses the root cause entirely.
- Flexible duct mixed with old rigid galvanized trunks: We find this combination in homes that have been partially upgraded. The flexible sections sag, collect debris, and restrict airflow. The galvanized trunks corrode at the seams. Both need different cleaning approaches and often repair.
Pricing for Air Duct Cleaning in Los Altos, CA
Most full residential duct cleanings in Los Altos fall between $350 and $650 for a single-system home up to about 3,500 square feet. Larger homes, multi-zone systems, or properties with extensive remodel layers that require additional inspection and correction work can run $700 – $950. Commercial duct cleaning for small office or retail spaces in Los Altos typically starts around $800 and scales with system complexity.
What moves the price: accessibility of your trunk lines, whether we need to open ceiling sections to reach hidden junctions, the number of registers and returns, and whether we find disconnected or damaged ductwork that needs repair before cleaning is effective. We give you one flat price per system, agreed in writing, before any work starts. No per-vent add-ons, no equipment charges that appear at the door. Call (361) 326-5060 for an exact quote; estimates are free.
We Also Serve Cities Near Los Altos
Our crews work throughout the mid-Peninsula, including Air Duct Cleaning in Los Altos and surrounding communities. If you’re in Mountain View, Stanford, Palo Alto, or Portola Valley, the same technicians, equipment, and written guarantees apply. Dispatch is coordinated from our San Francisco Bay Area office, with local routing that keeps drive times reasonable across the service area.
Serving Los Altos, CA - Our Local Coverage Area
We’re based in the Los Altos 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 Los Altos
Every 2-3 years, not the 3-5 year interval written for sealed suburban housing. Fine silica dust and oak pollen from open lots load the return trunk and air handler faster than visible debris would suggest. Call (361) 326-5060 and we’ll inspect your system and recommend an interval based on your actual conditions.
Cleaning alone won’t fix an undersized trunk, but our diagnostic process will find it. We measure static pressure and run a camera inspection; if the trunk was never resized for the addition, we’ll show you the problem and quote the repair separately before any work starts.
Yes. We clean and inspect ductwork in detached shops, barn offices, and guest units, and we specifically check for cross-connections that pull wood smoke or shop dust back into the main house system. Pricing depends on system size and accessibility; call (361) 326-5060 for a specific quote.
Source removal: we place the system under negative pressure, mechanically agitate the interior surfaces with rotary brushes, and extract dislodged debris through a sealed collection system. We clean all supply and return ducts, registers, and the air handler cabinet, then document with before-and-after photos. No chemical fogging, no sealants applied without your explicit request.
No. The mild climate means you don’t have condensation-driven mold, but it also means more open-window ventilation during shoulder seasons, which pulls in pollen and silica dust. Summer AC use in well-sealed homes then recirculates that debris continuously. The climate changes what fails, not whether maintenance matters.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Los Altos since 2004.