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 Repair Across Los Altos
Air duct repair in Los Altos typically runs between $350 and $1,800 depending on whether we’re sealing a single failed joint or replacing entire trunk-line sections in a 1950s crawl space. Most repairs on the ranch-style homes that dominate this city are completed in a single visit, though we schedule the work properly rather than rushing it. Our crews know Los Altos streets well, from the winding lanes off El Monte Road toward the foothills to the flat grid of the Country Club neighborhood near the Los Altos Golf & Country Club. If your registers are blowing weak, your rooms heat unevenly, or a musty smell returns every spring, call (980) 447-2498. We’ll send a real person to look at the actual ductwork, not a sales script.
Why Linden Air Duct Cleaning Is Los Altos’s Preferred Air Duct Repair Company
We’ve worked inside enough Los Altos crawl spaces to know what hides in them. The pier-and-beam foundations under the mid-century ranchers along Miramonte Avenue and Covington Road give rodents paths into duct runs that slab foundations simply don’t. Our Air Duct Repair team carries camera inspection gear as standard equipment on every Los Altos call, because the joint leak you can’t see from the register is usually the one causing the problem. We don’t guess and we don’t upsell a fogging treatment when the real issue is a failed connection.
Every technician who arrives at a Los Altos home has passed a background check and carries a photo ID badge they show at the door. You get the tech’s name and photo by text or email before we arrive. Marcus Veale, who leads our company, built this protocol because he knows what it feels like to let a stranger into your home when you’re alone with young kids or just cautious about who comes through the door. We serve Los Altos from our Bay Area office, and we answer the phone with a live person around the clock.
Ductwork Installation in Los Altos
Ductwork Installation in Los Altos usually means replacing the original sheet-metal trunk lines and early flex runs that were installed when these homes were built between the late 1940s and early 1970s. We’re not talking about a simple register swap here. The job involves pulling the old metal, often through a crawl space with barely 24 inches of clearance, then laying properly sized, sealed, and insulated duct that meets current airflow standards. A full single-story ranch replacement in Los Altos typically runs $4,200 to $8,900 depending on the number of supply runs and whether the return trunk needs to be resized.
Crawl Space Duct Replacement
In Los Altos, the crawl space is where ducts go to fail. Rodent access, standing humidity, and decades of deferred sealing mean we often replace duct sections that look fine from the inside but are compromised at the joints. We pull the old material, address the source of the moisture or animal access, and install sealed, insulated runs that hold up.
Supply and Return Trunk Replacement
Older Los Altos homes were frequently built with undersized return air systems for how families actually use the house now. A bedroom door closed at night puts pressure on a 60-year-old return trunk. If rooms are chronically stuffy or the system is loud when the door shuts, the return path may need resizing as part of the install.
HVAC Duct Installation in Los Altos
HVAC Duct Installation in Los Altos is the fuller version of the job: it includes the ductwork itself plus the connections, plenums, and transitions that tie into your furnace and air handler. Homeowners go this route when they’re replacing an aging HVAC system and don’t want new equipment bolted to old, leaky ductwork. A complete HVAC duct installation on a typical 1,600 to 2,400 square foot Los Altos ranch home runs $5,500 to $11,000 depending on access difficulty and the number of zones.
System Integration and Airflow Balancing
New equipment on old duct is a common mistake we get called in to correct. We install ducts sized to the actual CFM your system delivers, not the previous setup guessed at decades ago. Then we balance the airflow so the far bedroom gets the same delivery as the one next to the air handler.
Transition and Plenum Work
The connections where the duct meets the furnace or coil are common failure points in Los Altos systems. Vibrations, heat cycling, and access that makes regular inspection unlikely mean the plenum connections rust, separate, or get chewed through. We fabricate and seal those transitions as part of any full installation.
Trusted Brands We Service in Los Altos
Our equipment runs on the same trade-trusted names you’ll find in serious HVAC shops: Rotobrush for negative-pressure extraction and Nikro for inspection and cleaning systems. When repairs call for air-quality products, we work with Aprilaire and Abatement Technologies filtration and purification components, plus Guardsman for specialized treatments where they actually matter. We keep common fittings, sealants, and filter media on our trucks so Los Altos homeowners aren’t waiting on a second trip for a standard repair. You shouldn’t have to care what brand of tape seals your duct, but it should be the right one for the job, not whatever was cheapest at the supply house that morning.
Common Air Duct Repair Problems We See in Los Altos Homes
- Rodent intrusion in pier-and-beam crawl spaces. The low-clearance foundations under Los Altos ranch homes give roof rats and mice years of undisturbed access. We routinely pull nesting material and droppings from return trunks, which means sanitization and re-sealing matter as much as the cleaning itself.
- Failed milled-edge joints on original sheet metal. These 60- to 70-year-old systems were assembled with folded seams that were never sealed to modern standards. The gaps are small enough to hide, large enough to pull crawl-space air into the system all day.
- Microbial growth on aged flex duct interior surfaces. The humidity that builds in Los Altos crawl spaces, especially near the foothill side of town, combines with organic debris to feed biological growth inside older flex runs. A fogging sanitizer masks it for a season; removing and replacing the affected duct is the actual fix.
- Smoke particulate accumulation after fire season. Los Altos sits directly below the Santa Cruz Mountains, so when fires like the SCU Lightning Complex burn in the range, fine particulate settles into supply and return ducts and stays there. Register-to-register cleaning alone won’t reach the deep runs where that ash bonds with moisture.
Pricing for Air Duct Repair in Los Altos, CA
A focused repair, like sealing a single failed joint or replacing a short section of damaged flex, runs $350 to $650 in Los Altos. Replacing an entire supply trunk or re-sealing all accessible joints across a crawl-space system lands between $1,100 and $2,500. Full ductwork installation for a standard single-story Los Altos ranch home runs $4,200 to $8,900, and a complete HVAC duct installation runs $5,500 to $11,000. What moves the number is access: a 30-inch crawl space off a hillside lot near the country club costs more to work in than a flat, open one near Loyola Corners. Every quote is a written, flat price agreed before work starts. No per-vent pricing games. Call (980) 447-2498 for a free estimate.
We Also Serve Cities Near Los Altos
Our crews cover the whole mid-Peninsula corridor, so if you’re in Mountain View, Stanford, Palo Alto, or Portola Valley, we’re already working in your neighborhood. While this page focuses on Air Duct Repair in Los Altos, the same team, the same pricing, and the same written guarantee apply throughout the 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 Repair in Los Altos
Yes, but the bigger factor is what Los Altos’s humidity gets combined with. The moisture that condenses in our crawl spaces is similar to what Sunnyvale sees. What differs is the fuel: Los Altos collects wildfire smoke particulate from the Santa Cruz Mountains that flatland cities to the east get less of, and that organic residue feeds microbial growth inside ducts. A one-time fogging treatment masks the smell for a season because it never removes the biofilm. Removing the contaminated duct material or mechanically cleaning to the core surface is what actually stops the regrowth cycle. Call (980) 447-2498 if you’re tired of paying for treatments that fade by spring.
For isolated failures, repair is the right call. If inspection shows a single crushed run or one failed connection with otherwise sound material, we fix that section and you’re done. But if the flex is original to a 1960s Los Altos home, the interior liner is likely brittle, the insulation value is near zero, and multiple joints are loose. At that point, repeated repairs will cost more than replacement over a few years. The honest answer comes from a camera inspection, not from a sales position. We’ll show you the footage and tell you which path we’d take in our own house.
If you live on the hillside side of Los Altos, closer to the open space and ridge lines, you should assume it did. Foothill homes get the direct plume settlement that flatland neighborhoods near the golf course receive less intensely. The signs are gray or brown residue at supply registers, an ashy smell when the system first cycles on, and fine black dust reappearing days after cleaning. A camera scope of the return and supply runs will show accumulation in the low-clearance crawl sections that normal register-to-register cleaning never touches. We include that camera inspection in our repair assessment.
MERV 8 to MERV 11 is right for most Los Altos homes running original or early retrofit ductwork. Higher ratings like MERV 13 add more airflow resistance, which older duct systems and older blowers often can’t overcome without running hard and failing early. If you need higher filtration for smoke season, a standalone air purifier from a brand like Aprilaire does the heavy lifting without choking the HVAC system. We’ll check static pressure when we’re in the ducts and tell you what filter your system can actually handle.
We find it regularly, and it’s not a sales line. The pier-and-beam foundations under Los Altos’s mid-century ranchers are exactly what roof rats and mice want: dark, quiet, and largely forgotten. Our crew pulled duct runs from a 1958 ranch off University Avenue and found rodent nesting material packed into the return trunk alongside a 3/16-inch milled-edge joint leak invisible from outside. After camera inspection and negative-pressure source removal, we sealed the joint and re-insulated the crawl-space segment, and the musty smell that had returned every spring after three previous steam-clean treatments stopped. The debris is real. The fix is real. You’re welcome to see the photos before we start.
Call Linden Air Duct Cleaning for Air Duct Repair in Los Altos
If your ducts are leaking, musty, or simply old enough to have grandchildren, call (980) 447-2498. You’ll get a live person on the line, a written price before any work begins, and a technician whose name and photo arrive before they do. If the repair fails within 365 days, we come back at no charge, in writing, on every job. That’s the standard we’ve operated under since 2004, and it’s how we do business in Los Altos every day.
Written by Marcus Veale, Owner at Linden Air Duct Cleaning, serving Los Altos and the surrounding Bay Area since 2004.