Air Duct Cleaning in San Lorenzo - One Flat Price, Before-and-After Photos

Fast, Reliable Air Duct Cleaning Across San Lorenzo

Most homeowners in San Lorenzo pay between $380 and $620 for a complete residential air duct cleaning, with older homes in San Lorenzo Village often running higher when disconnected or mold-affected ductwork needs repair before the system can be properly cleaned. Our crews are dispatched from the San Francisco Bay Area office and serve San Lorenzo directly, so we know the Bohannon-era ranch homes, the shallow crawl spaces along San Lorenzo Creek, and the specific duct failures these houses develop after 70-plus years. If you’re noticing weak airflow, musty odors when the heat or AC kicks on, or your blower motor straining harder than it used to, call (469) 972-3151 for a free written estimate.

Call (469) 972-3151

Why Kestrel Air Duct Cleaning Is San Lorenzo’s Preferred Air Duct Cleaning Company

We’ve been working under the Kingswell Guarantee since 2004, and that same written standard applies to every San Lorenzo job we take. Our Air Duct Cleaning team doesn’t just vacuum vents; we inspect the full system with a camera, identify where ductwork has failed, and give you the price in writing before any work begins.

San Lorenzo homeowners call us because we’ve built a reputation for showing up in the window we promised, leaving the job site cleaner than we found it, and putting our 365-Day Done Right Promise in writing on every invoice. If something falls short within that year, we come back and make it right at no charge. No discretion, no argument.

Our technicians are background-checked, uniformed, and trained on Rotobrush rotary brush systems, Nikro negative-pressure units, and Abatement Technologies HEPA filtration. These aren’t shop vacs from a hardware store. They’re professional tools designed to dislodge debris at the duct wall, pull it out under controlled suction, and keep loosened particles out of your living space while we work.

Calls are answered by a live person, 24/7. Not a queue, not a robot. A real conversation, any time of day.

Ductwork Cleaning in San Lorenzo

Ductwork Cleaning in San Lorenzo starts with understanding what kind of ductwork we’re dealing with, because the answer isn’t the same house to house. In San Lorenzo Village and the surrounding Bohannon tracts, we routinely find original galvanized steel from the 1940s and 1950s, sometimes retrofitted with flex duct in the 1970s or 1980s, all of it running through shallow crawl spaces that stay damp from marine air and creek drainage. A proper cleaning here means source removal: brush agitation to knock debris loose from the duct walls, followed by negative-air extraction to pull it out of the system entirely. For a typical San Lorenzo ranch home, ductwork cleaning runs $380-$520 when the system is intact; if we find disconnected runs or collapsed flex that needs repair first, the total can reach $580-$780.

Supply Duct Cleaning

Supply ducts push conditioned air into your rooms, but in San Lorenzo’s older homes they often push less than they should. Sagging flex duct, corroded takeoff connections, and insulation breakdown all restrict flow before the air ever reaches the vent. We clean the full supply trunk and branch lines, then test airflow at each register to confirm the system delivers what it was designed to.

Return Duct Cleaning

Return ducts pull air back to the air handler for reconditioning, which means any gap or disconnect in the return path draws unfiltered crawl-space air straight into your system. In San Lorenzo Village, we find return plenums compromised by moisture rot and disconnected flex more often than in any nearby city. We HEPA-filter the return side during cleaning to prevent recontamination, and we camera-inspect for structural damage that a surface cleaning won’t fix.

Air Duct Inspection in San Lorenzo

Air Duct Inspection in San Lorenzo is where we separate a routine cleaning from a repair job, and in this city the distinction matters more than most. Our camera inspection runs the full length of your duct system, starting at the air handler and continuing through every accessible crawl-space run, to document what kind of ductwork you have, what condition it’s in, and whether cleaning alone will restore proper airflow. A standard video inspection for a San Lorenzo home costs $180-$240; if we’re already on site for a cleaning, we often bundle the inspection into the overall price. Many homeowners in San Lorenzo call us specifically because they’ve been told they need a new air handler, when the real problem is crushed or disconnected ductwork the previous contractor never looked at.

Video Inspection and Documentation

We record what the camera sees and show it to you on site. No guessing, no verbal descriptions you can’t verify. If your flex duct has sagged into standing water near the foundation, or a joint has separated completely, you’ll see it. This documentation also supports any insurance claim or home-sale disclosure you may need down the road.

System Assessment and Written Recommendations

After inspection, we give you a written report with specific recommendations: cleaning only, cleaning plus sealing, or repair and replacement of failed sections. The price for each option is itemized before you decide. That’s the Kingswell Way. Say the price, show the evidence, let the homeowner choose.

Trusted Brands We Service in San Lorenzo

Our technicians arrive with professional-grade equipment from Rotobrush, Nikro, and Abatement Technologies, and we stock Honeywell and Aprilaire filtration products for San Lorenzo homeowners who want to maintain cleaner air between service visits. Nikro negative-pressure units create the controlled suction that pulls dislodged debris out of your ducts without releasing it into your home; Abatement Technologies HEPA filtration captures particles down to 0.3 microns during the cleaning process. For homeowners near the damper end of San Lorenzo Creek, we often recommend Aprilaire media air cleaners as a follow-up to duct cleaning, because they handle the higher particulate load that comes with chronically moist crawl-space conditions. Parts and filters are stocked locally, so there’s no extended wait for replacement components.

Common Air Duct Cleaning Problems We See in San Lorenzo Homes

• Disconnected flex duct at galvanized joints. In San Lorenzo Village, 1970s and 1980s flex retrofits were clamped over original galvanized steel takeoffs that have since corroded. The clamps loosen, the flex slips off, and your blower starts pulling damp crawl-space air instead of return air from the house. We find this on roughly half the Bohannon-era homes we inspect.
• Mold colonization in duct insulation. San Lorenzo’s position in the southern East Bay fog belt means crawl spaces stay damp through fall and winter, far wetter than Livermore or Pleasanton just inland. That moisture wicks into flex duct insulation and creates mold growth that a surface cleaning can’t reach. Source removal and replacement of affected duct sections is often necessary.
• Collapsed flex restricting airflow to specific rooms. When flex duct sags and kinks over decades, it can collapse entirely at the low point. Homeowners call us complaining that a back bedroom in their San Lorenzo ranch never heats or cools properly, and the culprit is usually a crushed flex run the original installer never supported properly.
• Corroded metal joints causing air leaks. Original galvanized steel in pre-1955 San Lorenzo homes has had 70-plus years of exposure to ground moisture. The metal pits, the seams open, and conditioned air leaks into the crawl space before it ever reaches the living area. Sealing these joints with mastic during a cleaning visit restores flow without replacing the entire system.

Pricing for Air Duct Cleaning in San Lorenzo, CA

We Also Serve Cities Near San Lorenzo

Our crews work throughout the East Bay, including Castro Valley, San Leandro, Union City, and Oakland. Each community has its own housing stock and ductwork patterns; Castro Valley’s hillside homes present different challenges than San Lorenzo’s slab-and-crawl ranches, and Oakland’s mixed-era construction requires a flexible approach. Wherever you are in the area, the Kingswell Guarantee applies: written price, defined arrival window, clean job site, written guarantee with free return visit if the work fails.

FAQs About Air Duct Cleaning in San Lorenzo