Whole-home duct cleaning
Dryer vent cleaning
Camera inspection
Sanitizing & deodorizingWhole-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.
Fast, Reliable Air Duct Cleaning Across Daly City
Air duct cleaning in Daly City typically costs between $450 and $900 for a full system on a 1,200 to 1,800 square foot home, with most jobs completed in 4 to 6 hours. The price depends on how many supply and return runs your home has, how much buildup is in the system, and whether we find damage that needs repair. Call (951) 527-6259 for a written quote before any work begins. We live and work around Daly City, so we know exactly what your ducts are dealing with: fog-fed moisture, salty air, and decades of accumulated dust in older tract homes.
Why Linden Air Duct San Francisco Is Daly City’s Preferred Air Duct Cleaning Company
Daly City homeowners call us because we show up with a name and a face. Before the visit, we send the technician’s name and photo. At the door, they show a photo ID badge. Every tech is background-checked and identity-verified under the Threshold Standard, and they arrive in a clean, marked uniform. That matters when you’re letting someone into your home.
Marcus Veale, who leads our team, set the operating rules years ago: written price before any work starts, every single time. No surprise invoices at the end. No bait-and-switch. If our work doesn’t hold up, the 365-Day Done Right Promise means we come back and make it right, in writing. That’s why homeowners in Westlake, Broadmoor, and St. Francis Heights keep our number saved.
We coordinate scheduling from our San Francisco Bay Area office, but crews serve Daly City directly. You’re not waiting on a truck from across the bay. And when you call, a live person answers. No voicemail loops, no automated system, at any hour.
Styles & brands we work with
HVAC Duct Cleaning in Daly City
HVAC Duct Cleaning in Daly City means removing the sticky, salty dust that ocean air drives into your ductwork, not just brushing the visible registers. The marine layer keeps indoor humidity high year-round, and that moisture condenses inside cool metal ducts. Dust becomes a damp film that sticks to duct walls. A surface brushing won’t remove it. Our process uses negative-pressure extraction with HEPA filtration, so what we loosen gets pulled out of the system, not blown into your living room.
A typical Daly City homeowner needs this work when they see dust returning to registers within days of cleaning, or when a musty smell lingers every time the blower kicks on. In older homes, especially Westlake tract houses from the 1950s and 60s, the original sheet metal ducts often have unsealed joints. That means crawl-space air, carrying moisture and mold spores, gets pulled directly into the supply stream. Source removal and duct sealing, not brushing alone, are what actually stop the recurring dust.
For full-system HVAC duct cleaning in Daly City, expect to pay $450 to $900 depending on home size and access. That includes supply and return ducts, the plenum, and the blower compartment where accessible. If we find leaks or crushed sections during camera inspection, we’ll show you the footage and quote the repair separately before any additional work begins.
Supply and Return Duct Cleaning
Supply ducts carry conditioned air into your rooms. Return ducts pull air back to the furnace. In Daly City’s hillside homes, returns often run through tight crawl spaces where they get disconnected at joints, pulling dust and damp crawl-space air into the system. We clean both sides, then seal the joints with mastic where leaks are visible.
Full System Cleaning with Video Inspection
We run a camera through your ducts before and after the clean. You see what was in there, and you see that it’s gone. If the camera finds a crushed run, a disconnected return, or standing debris, we document it and give you a written repair quote. You make the call. No pressure.
Vent Cleaning in Daly City
Vent Cleaning in Daly City is a different job than duct cleaning, and it matters more here than in drier cities. The dryer vent is the most common fire risk in a home, and Daly City’s hillside houses often have long vent runs with multiple elbows to reach an exterior wall. Every elbow creates a low spot where wet lint collects. The fog doesn’t help: moist air makes lint heavier and stickier, so it clumps inside the run instead of blowing clear.
When a dryer vent is partially clogged, the dryer runs longer, overheats, and can shut down mid-cycle. Homeowners sometimes replace a perfectly good dryer before checking the vent. We see this regularly on streets like Southgate and along Lake Merced Blvd, where vent runs stretch 20 feet or more with three or four turns. That’s the Westlake slope effect: longer runs, tighter spaces, more failure points.
Dryer vent cleaning in Daly City runs $150 to $300 depending on run length and access. If the vent exits through the roof or a second-story wall, expect the higher end. We remove the lint, check airflow at the exterior termination, and tell you the static pressure before and after. You’ll know the vent is clear, not just that we said it was.
Dryer Vent Lint Trap Bypass
Some older Daly City homes have a bypass in the dryer vent line: a hidden secondary lint trap, often behind the dryer or in a closet. It’s designed to catch lint before it reaches the main line, but nobody knows it’s there, so it never gets cleaned. We inspect for these by default on hillside properties with long vent runs.
Exterior Vent Hood and Flap Service
The plastic flap on your exterior vent hood breaks down in the salt air and sun. When it fails, fog and moisture enter the vent run from outside, wetting the lint inside. We replace broken hoods and cages with corrosion-resistant parts as part of the vent service.
Trusted Brands We Service in Daly City
We use Rotobrush and Nikro equipment for duct cleaning, and we work with air-quality products from Aprilaire, Abatement Technologies, and Guardsman for filtration and sanitization where a home needs it. If your system was installed with any of these brands, we know the equipment and we don’t have to improvise. For Daly City customers, that means faster service and parts that match the system, not generic substitutes. If your Aprilaire filter housing or Guardsman access door needs replacement during the job, we typically have the part on the truck.
See the difference
Before
After
Before
After
Before
AfterCommon Air Duct Cleaning Problems We See in Daly City Homes
- Fog-driven condensation inside uninsulated metal ducts. The marine layer keeps Daly City’s indoor air humid almost year-round. Cool metal ducts collect condensation, which turns dust into a sticky film. Brushes alone can’t remove it. This is why we run HEPA filtration and use agitation tools that break the bond, not just sweep the surface.
- Crushed or disconnected duct runs in Westlake crawl spaces. Tight crawl spaces under 1950s tract homes leave ductwork squeezed between beams and floor joists. A crushed supply duct can cut airflow to two bedrooms by more than half, and the air handler just runs longer to compensate. Video inspection shows the restriction; sealing and rebuilding the run fixes it.
- Long dryer vent runs with multiple elbows on hillside streets. Homes stacked along Southgate, Westmoor, and around Lake Merced Blvd often need long vent runs to reach an exterior wall. Every elbow is a lint trap. The dryer overheats, shuts down, and people think the machine is broken. We measure static pressure and clear the run before anyone replaces a dryer.
- Original unsealed sheet metal ducts pulling crawl-space air. Westlake tract homes from the 1950s and 60s were built with thin-gauge sheet metal and unsealed joints. Air leaks out of the supply side, and musty crawl-space air gets drawn into the return side. Sealing those joints with mastic is often the real fix for recurring dust and that musty smell.
Pricing for Air Duct Cleaning in Daly City, CA
For a full system clean in a Daly City home, expect $450 to $900. Smaller condos and single-level homes with good access tend to land in the $450 to $550 range. Hillside homes with long vent runs, multiple returns, or crawl-space ductwork run higher because the work takes longer and requires more access. Dryer vent cleaning as an add-on is $150 to $300. If we find crushed ducts, disconnected returns, or failed seals during inspection, we quote those repairs separately, in writing, before touching them.
You’ll see cheaper ads. Some companies quote a low per-vent price and then find extras once the van is in your driveway. We don’t work that way. Written price before any work starts, one flat price per system. Call (951) 527-6259 and we’ll walk you through what your home needs and exactly what it costs. Estimates are free.
We Also Serve Cities Near Daly City
Our crews handle Air Duct Cleaning across the Daly City area, including South San Francisco, Pacifica, San Francisco, and Burlingame. If you’re in Daly City or a neighboring city, we can schedule a visit and give you a written quote before the work begins.
Serving Daly City, CA - Our Local Coverage Area
We’re based in the Daly 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 in Daly City
Daly City sits directly in the ocean marine layer, which means nearly constant fog and high indoor humidity. That moisture condenses inside your cool metal ducts and turns ordinary dust into a sticky film that clings to duct walls. In San Francisco or South San Francisco, homes further from the ocean or at different elevations see less of this condensation, so dust stays dry and blows through more easily. The sticky residue in Daly City ducts attracts more particles, and it builds up faster. This is why source removal, not just brushing, matters here more than anywhere else nearby. If you’re seeing dust on registers within days of cleaning, call (951) 527-6259 for a camera inspection and a written quote.
We clean them gently using agitation tools sized for thin-gauge sheet metal, not aggressive wire brushes that can tear through older ducts. The original ductwork in Westlake tract homes is often thinner than modern installations, and the joints are already weak from decades of thermal expansion and damp air. Before cleaning, we run a video inspection to identify fragile sections, then work with lower pressure and careful tool placement around seams. Where joints are failing, we seal them with mastic after the clean, which restores system pressure and stops crawl-space air from leaking in. Our Rotobrush and Nikro equipment is designed for exactly this kind of older residential ductwork.
The Westlake slope effect is the pattern we see on hillside streets where homes are stacked at different elevations, forcing long dryer vent runs with multiple bends to reach an exterior wall. Every elbow in the run creates a low point where lint collects, especially in Daly City’s damp air, which makes lint heavier and stickier than it would be in a dry climate. A dryer on a short, straight vent run in a flat neighborhood might push most lint outside on its own. The same dryer on a 25-foot run with four elbows off Southgate will choke in months. We measure static pressure before and after cleaning so you know the vent is actually clear. If your dryer is shutting down mid-cycle, call (951) 527-6259 before you replace the machine.
Often yes, but only if the source is inside the ducts. In Daly City, mold and mildew grow inside ductwork because fog-driven humidity condenses on cool metal surfaces, and the microbial film stays damp for months. Cleaning removes that buildup, but if the ducts are still pulling humid air from an unsealed crawl space, the smell will return. That’s why our full system cleaning includes inspection for disconnected returns and leaking joints. We seal what’s leaking, then clean. If the smell persists after the job, we’ll tell you honestly whether the problem is in the ductwork or elsewhere in the home, and we’ll document what we found. The 365-Day Done Right Promise covers our work, so if the smell comes back and it’s something we addressed, we return at no charge.
Yes, changing filters helps the blower and the air handler, but it doesn’t stop dust and moisture from accumulating inside the duct runs themselves. In a small Daly City home, especially a 1950s Westlake tract house with original metal ducts, the return side often runs through a damp crawl space with joints that have never been sealed. Even with a fresh filter every month, that return duct is pulling crawl-space air into the system, and the supply ducts are coated with sticky, salt-laden dust. Filters only capture what passes through them. They don’t clean what’s already layered inside the ducts. A video inspection will show you exactly what’s in there. Call (951) 527-6259 and we’ll schedule one.
If your Daly City home still has original ducts, a camera inspection will show you exactly what’s in them. Call (951) 527-6259 for a free estimate and a written price before any work starts.
Written by Marcus Veale, Owner at Linden Air Duct San Francisco, serving Daly City since 2004.