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 San Bruno
Air duct cleaning in San Bruno typically runs $450-$850 for a full residential system, and most jobs are scheduled within a few days of your call. We’re the local team that shows up in the window we gave you, puts the price in writing before touching a single vent, and stands behind the work with a real guarantee.
San Bruno homeowners know the difference between a company that answers the phone and one that doesn’t. Our dispatch team operates from the San Francisco Bay Area office, and our crews serve San Bruno directly. We understand the postwar housing stock that dominates this city, the persistent marine moisture that seeps into crawl spaces, and the particular contamination patterns that show up in ducts here. Call (469) 972-3151 for a free estimate.
Why Kestrel Air Duct Cleaning Is San Bruno’s Preferred Air Duct Cleaning Company
We’ve built our reputation in San Bruno by doing what we said we’d do. The Kingswell Guarantee, which governs every job we perform, requires four things: a written price before work begins, arrival in the window we promised, a clean job site, and a written guarantee with a free return visit if the work fails within the guarantee period. These aren’t marketing phrases. They’re printed on every work order.
Our technicians are background-checked, uniformed, and trained on professional-grade equipment: Rotobrush rotary brush systems for dislodging debris at the duct wall, Nikro negative-pressure units for pulling contaminants out, and Abatement Technologies HEPA filtration to keep loosened particles out of your living space during cleaning. This isn’t box-store equipment. It’s what the job actually requires.
Calls are answered by a live person, 24/7. No voicemail queue, no automated system. A real conversation, any time of day.
Our Air Duct Cleaning team has worked in the Peninsula corridor long enough to recognize patterns specific to San Bruno: the disconnected sheet-metal joints common in 1950s tract homes, the condensation staining at flex duct collars in fog-heavy hillside blocks, the fine particulate accumulation that comes with living under active flight paths. That local knowledge means we diagnose faster and fix the right problem.
HVAC Duct Cleaning in San Bruno
HVAC Duct Cleaning in San Bruno addresses the complete forced-air system: supply ducts that carry heated or cooled air to your rooms, return ducts that pull air back to the air handler, and the trunk lines that connect them. In this city, the job often reveals more than dust. The postwar housing stock, built rapidly between 1945 and 1965, frequently contains original sheet-metal ductwork now 60-75 years old. Joints have loosened. Seals have failed. Some returns have been partially crushed by decades of crawl-space activity or foundation settling.
We use Rotobrush agitation tools under negative-air extraction to source-remove debris from the duct walls, then verify with video inspection. A typical full HVAC duct cleaning in San Bruno runs $650-$850 for a single-system home. Homes with multiple zones or extensive contamination may run higher. We put the exact price in writing before starting.
Supply Duct Cleaning
Supply ducts push conditioned air to every room. In San Bruno’s older homes, we often find these lines partially blocked at the boot connection, or disconnected entirely in the crawl space. The register looks fine. The airflow isn’t. Camera inspection finds what a surface check misses.
Return Duct Cleaning
Return ducts pull air back to the air handler for reconditioning. These are the workhorses, and in San Bruno’s undersized original systems, they’re often the most restricted. Fine particulate from the SFO corridor packs into these lines over years, loading the blower motor and reducing airflow to every supply register in the house.
Vent Cleaning in San Bruno
Vent Cleaning in San Bruno focuses on the visible and accessible components: wall and ceiling registers, floor vents, and the immediate boot connections behind them. This is where homeowners notice problems first: weak airflow from one room, a register that never seems clean, or a musty smell when the system cycles on. A typical vent cleaning service in San Bruno runs $150-$300 as a standalone job, though most homeowners bundle it with full system cleaning for better value.
We remove each register, clean the boot and first few feet of duct, and inspect with a borescope for deeper issues. In San Bruno’s hillside neighborhoods west of El Camino Real, we routinely find condensation staining and early mold at these connections. Cleaning without addressing the moisture source is temporary. We flag it and explain your options.
Register and Grille Restoration
Metal registers in older San Bruno homes often have decades of paint buildup and corrosion. We clean them properly, not just vacuum around them. If the finish is beyond restoration, we’ll tell you.
Boot Connection Inspection
The boot is where duct meets wall or floor. In San Bruno’s postwar construction, these connections were often sealed with fabric tape that has long since failed. We inspect and report. Re-sealing is a separate repair, but it’s the difference between a clean that lasts and one that doesn’t.
Trusted Brands We Service in San Bruno
We clean ductwork connected to every major HVAC brand, and we stock filtration products from Aprilaire and Guardsman for San Bruno homeowners who want to maintain cleaner air between service visits. Aprilaire whole-home media air cleaners install at the air handler and capture particles downstream of the duct system. Guardsman products provide additional filtration options for specific indoor air quality concerns. We carry these items on our trucks, so there’s no waiting for a parts run. If your system needs a filtration upgrade after cleaning, we can size and quote it on the spot.
Common Air Duct Cleaning Problems We See in San Bruno Homes
- Disconnected sheet-metal joints in 1950s-1960s tract homes. Original duct runs were assembled with snap-lock seams and minimal sealing. Sixty years of thermal cycling and foundation movement open gaps that dump conditioned air into crawl spaces. A surface cleaning misses this entirely.
- Condensation and mold at flex duct collars in hillside neighborhoods. The San Bruno Gap pushes cool, moist air through crawl spaces west of El Camino Real. Flex duct connections, where metal meets insulated flex, are the first cold spot. Mold colonizes within a season if humidity stays above 60 percent.
- Fine particulate loading in undersized returns. SFO flight corridor exposure means measurable fine particulate matter enters San Bruno homes continuously. Older returns, often 25-30 percent smaller than modern code requires, clog faster and load the blower motor.
- Crushed or kinked flex runs from decades of crawl-space access. Every plumber, electrician, and pest control visit since 1955 has crawled over those ducts. Some are flattened to half their original diameter. The system runs, but airflow is strangled.
Pricing for Air Duct Cleaning in San Bruno, CA
Most full residential duct cleanings in San Bruno run $450-$850. A straightforward single-system home with accessible crawl space and standard contamination falls at the lower end. Homes with multiple HVAC systems, extensive mold remediation needs, or significant duct repair work run higher. Commercial duct cleaning in San Bruno starts around $1,200 and scales with system complexity.
What moves the price: system size, contamination level, accessibility of ductwork, and whether we find disconnected or damaged ducts that need re-sealing. We don’t do per-vent pricing. That’s a bait-and-switch setup. We price per system, flat rate, agreed in writing before work starts. You’ll know exactly what you’re paying before we touch a single vent.
Every estimate is free. Call (469) 972-3151 to schedule.
We Also Serve Cities Near San Bruno
Our crews work throughout the northern Peninsula. We regularly serve Millbrae, South San Francisco, Pacifica, and Brisbane from the same dispatch base. If you’re in one of these neighboring cities and found this page, yes, we cover your area too. Our Air Duct Cleaning in San Bruno hub page has more detail on local scheduling and coverage.
Serving San Bruno, CA - Our Local Coverage Area
We’re based in the San Bruno 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 San Bruno
The San Bruno Gap funnels cold, moist Pacific marine air directly through these hillside blocks, keeping crawl-space humidity chronically elevated. Fog sits heavier and longer here than in flatter or more sheltered Peninsula neighborhoods. That moisture condenses on the metal collars where flex duct connects to trunk lines, creating the exact conditions mold needs. We see this pattern so predictably that our technicians inspect every collar joint on pre-1970 homes in that corridor. Call (469) 972-3151 if you smell mustiness when your system runs.
Yes. Jet exhaust particulate, including fine black carbon and other combustion byproducts, is a measurable contributor to indoor dust in airport-adjacent communities. San Bruno’s position directly under active flight paths means this particulate enters homes continuously through doors, windows, and attic vents, then circulates through the HVAC system. Inland Peninsula cities like San Mateo or Burlingame don’t see this same loading pattern. Our negative-air extraction process removes this accumulated material from duct walls. For an assessment of your system’s contamination level, call (469) 972-3151.
Duct cleaning alone probably won’t. Weak upstairs airflow in a 1958 San Bruno home usually indicates disconnected or crushed return ductwork in the crawl space, undersized original ducts, or both. During our cleaning process, we video-inspect the full system and report what we find. Often the real fix is re-sealing failed joints or replacing crushed flex runs, not just removing debris. We’ll show you the camera footage and explain exactly what’s restricting airflow before quoting any repair work. Call (469) 972-3151 to schedule an inspection.
We source-remove debris from all accessible duct surfaces using Rotobrush agitation under negative pressure with HEPA filtration, clean registers and boots, and video-inspect the full system. For 60-75 year old ductwork, we specifically check for disconnected joints, failed seals, corrosion holes, and crushed runs. These are common in San Bruno’s postwar housing stock and affect performance more than contamination alone. We document everything with photos and report findings before recommending any repairs. The written price covers the full cleaning; repairs are quoted separately if needed. Call (469) 972-3151 for specifics on your home.
Most San Bruno homes benefit from cleaning every 4-6 years, sooner if you have allergies, pets, or visible mold. The combination of marine moisture from the San Bruno Gap and fine particulate from the SFO corridor creates above-average contamination rates compared to drier, inland Bay Area cities. Homes with original 1945-1965 ductwork and poorly sealed crawl spaces may need more frequent attention. We don’t push unnecessary service; we’ll inspect and tell you honestly whether your system needs cleaning now or can wait. Call (469) 972-3151 for a free evaluation.
Written by Dale Whitmore, Owner at Kestrel Air Duct Cleaning, serving San Bruno and the Peninsula since 2004.