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 $380-$650 for a complete residential system, with most ranch homes falling in the $450-$550 range depending on duct accessibility and condition. Our crews dispatch from the San Francisco Bay Area office and serve Los Altos properties with the same arrival windows we publish, not vague “sometime between 8 and 5” blocks. Call (469) 972-3151 for a free written estimate before any work begins.
We’ve worked the neighborhoods from Old Los Altos to South Los Altos, from the streets near Loyola Corners up toward the Foothill Expressway corridor. Los Altos isn’t a generic suburb, its housing stock tells a specific story. Most of the city was built out between 1955 and 1975 as single-story California ranch homes, and unlike neighboring Mountain View or Sunnyvale where teardowns and dense infill replaced much of the original construction, Los Altos properties were renovated, not rebuilt. That means updated kitchens, new bathrooms, and high-end finishes often sit on top of original sheet-metal trunk lines and early flex ductwork now pushing sixty years old. We know what to look for when we open a register boot in a home that just won a design award.
Why Kestrel Air Duct Cleaning Is Los Altos’s Preferred Air Duct Cleaning Company
Our Air Duct Cleaning team has built its reputation in Los Altos on showing up in the window we promised and leaving the written price unchanged from estimate to invoice. The Kingswell Way governs every visit: say the price, arrive on time, leave the place cleaner than we found it, put the guarantee in writing, and come back if it fails. That standard has been applied to every job since Kingswell was founded in 2004.
Los Altos homeowners tend to be exacting, many work in tech or finance and expect documentation. We deliver it. Every job starts with a written price before a single vent is touched. Our 365-Day Done Right Promise is documented on every invoice, if the work falls short within that year, we return and make it right at no charge. No phone tag, no “we’ll see what we can do.”
Our technicians are background-checked and uniformed, and they arrive with professional-grade equipment, not box-store shop vacs. The Rotobrush rotary brush systems we use dislodge debris at the duct wall itself. Nikro negative-pressure units pull loosened contaminants out of the system entirely. Abatement Technologies HEPA filtration keeps those particles out of your living space while we work. For homeowners who want to maintain clean air between service visits, we also carry Honeywell, Aprilaire, and Guardsman filtration and indoor-air-quality products.
Calls are answered by a live person, 24/7. Not a voicemail queue. Not an automated system that makes you press 3 and hope. A real conversation, any time of day.
Vent Cleaning in Los Altos
Vent cleaning in Los Altos addresses the supply and return registers where conditioned air enters your rooms and where stale air gets drawn back to the air handler. In a typical Los Altos ranch home, we find these registers coated with a distinctive mix: fine oak pollen that made it past the filter, settled dust from those long dry summers, and in properties near the Los Altos Hills corridor, a layer of wildfire ash particulate that standard filter changes never fully remove. Most vent cleaning jobs in Los Altos run $120-$220 as a standalone service, or they’re included in a full system cleaning.
Supply Register Deep Cleaning
Supply vents push heated or cooled air into your living spaces. Over years, the fins and louvers collect debris that restricts airflow and creates uneven temperatures room to room. We remove each register, clean the boot and first few feet of duct, and treat the register itself before reinstalling. In Los Altos homes with original 1960s metal registers, we take care not to damage the finish, these pieces are often irreplaceable.
Return Vent and Grille Service
Return vents are the lungs of your system, pulling air back for reconditioning. They’re also the entry point for oak pollen, ash, and whatever else is circulating in your home. We clean the grille, the frame, and the duct opening behind it. For Los Altos properties with high-MERV filters, we inspect whether restricted return airflow has caused the duct to deform or collapse, a problem we see regularly near Loyola Corners.
Air Duct Repair in Los Altos
Air Duct Repair in Los Altos is often discovered during cleaning, not called in separately. The mid-century ranch homes that define this city carry original ductwork through low-clearance attics and raised-foundation crawlspaces, and sixty years of thermal cycling, rodent activity, and well-meaning but structurally ignorant renovations have taken their toll. Typical repair work in Los Altos runs $180-$450 for isolated flex replacement or sealing, and $600-$1,200 when multiple trunk sections need reconstruction. We always photograph the damage, explain the repair, and get written approval before cutting or replacing anything.
Flex Duct Collapse and Reconnection
Original flex duct in Los Altos attics has often sagged, torn at connection points, or partially collapsed where high-MERV filters starved the system of return airflow. We remove the damaged section, install new insulated flex rated for the application, seal with mastic, and support it properly so it won’t sag again. The work is photographed before and after.
Duct-Board Liner Replacement
Older duct-board trunk lines, common in 1960s and 1970s Los Altos construction, have fiberglass interiors that deteriorate and release particles into your air stream. When we find degraded liner during inspection, we replace the affected section with modern sheet metal or sealed duct board. This isn’t a cleaning issue, it’s a materials-failure issue, and we flag it clearly.
Trusted Brands We Service in Los Altos
We clean and service ductwork connected to all major HVAC brands, and we stock common fittings and flex sizes for the rapid turnaround Los Altos homeowners expect. Our equipment comes from Rotobrush for rotary brush agitation, Nikro for negative-air extraction, and Abatement Technologies for HEPA containment during the job. For filtration upgrades, we carry Honeywell, Aprilaire, and Guardsman products sized to your system. We don’t upsell equipment you don’t need, but if your 1962 ranch still has the original filter grille designed for a 1-inch disposable, we’ll explain what a properly sized media cabinet would do for airflow and particle capture.
Common Air Duct Cleaning Problems We See in Los Altos Homes
- High-MERV filters choking original ductwork. Los Altos’s tech-industry demographic often upgrades to MERV 13 or higher without checking whether the 1960s flex runs can handle the static pressure. The restricted airflow partially collapses attic duct sections, trapping debris that the better filter never let reach the air handler. We find this repeatedly near Loyola Corners and along the Foothill Expressway corridor.
- Wildfire ash embedded in deteriorating duct-board lining. Diablo wind events push fine combustion particulates from the Los Altos Hills fire corridor directly into exterior return intakes. These particles embed in aging fiberglass duct liner in ways that standard filter changes don’t address. Only physical agitation and source removal clears them.
- Oak pollen compounding biological buildup. Los Altos’s dense mature-oak canopy generates heavy seasonal pollen loads drawn into exterior return vents. In systems that run infrequently given the mild climate, this pollen accumulates with dust and moisture to support microbial growth on duct walls.
- Renovation debris in untouched original ductwork. A gut kitchen or bathroom remodel in a Los Altos ranch often seals off the original duct runs behind new finishes. Construction dust, drywall particulate, and even dropped fasteners end up in the system. We inspect with video before cleaning to document what’s actually in there.
Pricing for Air Duct Cleaning in Los Altos, CA
Most complete residential air duct cleaning jobs in Los Altos run between $380 and $650. A compact 1,200-square-foot ranch with accessible attic and crawlspace typically falls at the lower end, around $400-$480. Larger homes with multiple HVAC zones, extensive flex replacement, or difficult access through finished basements can reach $700-$900. Commercial duct cleaning for Los Altos office suites starts around $800 and scales with system complexity.
What moves the price: number of supply and return vents, whether the ductwork is accessible or buried behind finished surfaces, the condition of existing flex and connections, and whether video inspection reveals damage requiring repair before cleaning proceeds. We give one flat price per system, agreed in writing before work starts. No per-vent add-ons. No door-step revisions. You’ll see before-and-after photos of your own ducts, not stock images from another job.
Call (469) 972-3151 for a free estimate. We’ll ask about your home’s size, age, and any known ductwork issues, then give you a written range you can count on.
We Also Serve Cities Near Los Altos
Our crews regularly work Air Duct Cleaning in Los Altos and the surrounding communities: Mountain View to the east, Stanford and Palo Alto to the north, and Portola Valley to the west. Each property gets the same Kingswell Guarantee, written price, and documented arrival window, whether it’s a downtown Los Altos cottage or a Portola Valley estate with multiple outbuilding systems.
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 3-4 years for most Los Altos ranch homes, but properties on open land or near unpaved roads may need cleaning every 2-3 years due to higher dust and pollen loading. The mature oak canopy and Diablo wind events add particulates that suburban lots with paved streets and less vegetation don’t face. Call (469) 972-3151 and we’ll assess your specific exposure.
Original 1955-1975 ductwork in Los Altos has reached or exceeded its design lifespan, and the city’s pattern of cosmetic renovation without structural replacement means failing flex connections and deteriorating duct-board liner often hide behind updated interiors. Mountain View and Sunnyvale turned over more housing stock, so this mismatched old-duct/new-interior condition is distinctly a Los Altos problem. We always inspect with video before quoting cleaning alone.
Yes, and possibly more urgently. High-MERV filters restrict airflow, and in Los Altos’s aging ranch ductwork that restriction often partially collapses flex runs in attic spaces, trapping debris upstream of the filter where it never reaches the air handler to be filtered at all. The filter protects the equipment, not the duct walls. We’ve cleaned collapsed sections near Loyola Corners that were packed with decades of material the homeowner assumed the MERV 13 was catching.
Yes, measurably. Fine ash from Los Altos Hills corridor wildfires embeds in deteriorating duct-board lining and releases back into the air stream with every HVAC cycle. Oak pollen accumulates in return ducts and supports biological growth in systems that run infrequently during mild weather. Standard filter changes address neither problem because the contamination is already downstream of the filter, inside the ductwork itself. Physical agitation and negative-air extraction are required.
We bring our full equipment setup, Rotobrush agitation tools, Nikro negative-pressure units, and Abatement Technologies HEPA containment, to your location and work each system independently. Long driveways or rural access roads don’t change our process, though we confirm vehicle clearance when scheduling. Outbuilding HVAC systems, guest house mini-splits with ducted air handlers, and main residence ductwork are priced and documented separately so you know exactly what each system costs. Call (469) 972-3151 to schedule a walkthrough.
Written by Dale Whitmore, Owner at Kestrel Air Duct Cleaning, serving Los Altos under the Kingswell Guarantee since 2004.