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 Lorenzo
Air duct cleaning in San Lorenzo typically runs $350-$650 for a full residential system, with most homes on the Bohannon tract grid falling in the $450-$550 range due to crawl-space access requirements. We’re usually scheduling within a few days, and our crews know the neighborhood layouts well enough to bring the right equipment for those tight 16-inch crawl spaces before we arrive. If you’re smelling mustiness from your registers or your blower’s working harder than it should, call us at (323) 918-4345. We’ll give you a written price before any work starts, and we’ll show you exactly what we found.
Morton’s Air Duct Cleaning has been serving San Lorenzo since 2005 as part of the Cedarwell family of independently owned companies. Our dispatch is coordinated from the San Francisco Bay Area office, and our technicians live and work in the East Bay, so they know the difference between a Bohannon original off Via Alamitos and a later infill home near Lewelling Boulevard. That local knowledge matters when we’re deciding whether to bring Rotobrush agitation tools or Nikro HEPA vacuum systems for your specific duct configuration.
Why Morton’s Air Duct Cleaning Is San Lorenzo’s Preferred Air Duct Cleaning Company
San Lorenzo homeowners call us back because we treat their homes the way we’d want our own treated. Our technicians wear shoe covers and lay drop cloths from the moment they walk in, and they know to ask whether there’s a toddler napping or a dog who gets anxious around equipment noise. The Cedarwell C.A.R.E. values aren’t a poster on the wall, they’re how we train every tech to move through your house.
We answer the phone with a live person, 24 hours a day. Not a chatbot, not a callback queue. When you’re trying to figure out why your house smells like damp concrete every time the heat kicks on, you talk to a human who can get you scheduled.
Every job ends with two things: a photo of the clean-up, so you can see your floors and surfaces are exactly as we found them, and the 365-Day Done Right Promise stamped on your paperwork. If something isn’t right, we make it right. Full stop.
Our reputation in San Lorenzo is built on the specifics. We’ve cleaned ducts in the original Bohannon tracts near Hesperian Boulevard, in the later developments closer to San Lorenzo Creek, and in the mixed-era homes up toward East 14th Street. We know which blocks have the shallow crawl spaces, which ones see seasonal creek flooding, and where the 1970s furnace retrofits left homeowners with flex duct that’s been sitting on dirt for four decades.
Air Duct Repair in San Lorenzo
Air Duct Repair in San Lorenzo almost always means addressing the first-generation flex duct that was stapled into crawl spaces during the 1970s and 1980s furnace retrofits in Bohannon-era homes. These runs weren’t engineered for modern airflow demands, and decades of contact with damp soil have left them collapsed, mold-lined, or rodent-damaged. We don’t just patch them. We inspect with video, identify the failed sections, and replace what’s necessary while we’re already in the crawl space.
A typical Air Duct Repair in San Lorenzo runs $280-$520 for section replacement in a crawl space, with full supply-line replacement on a small Bohannon tract home reaching $800-$1,400 if multiple runs have collapsed. We give you the written price before we cut anything.
Video Inspection Before Any Cutting
We run a camera through every accessible run before we quote replacement. In San Lorenzo’s tight crawl spaces, this saves you money. We’ve found runs that looked collapsed from the register but were actually intact, and we’ve found mold damage hidden behind intact outer sheathing that would have been missed without looking.
Matching Replacement to Existing Systems
When we replace flex duct in a San Lorenzo crawl space, we spec the diameter and insulation value to match what your furnace needs, not just what fits. A 1970s hall-closet furnace in a Bohannon original was often oversized for the ductwork, and sloppy replacement makes that worse. We measure static pressure after our work so your blower motor isn’t fighting restricted airflow.
Ductwork Cleaning in San Lorenzo
Ductwork Cleaning in San Lorenzo requires a different approach than in newer cities with slab-on-grade construction and sealed attics. Here, the supply and return lines run through dirt crawl spaces where humidity from San Lorenzo Creek keeps ambient moisture high year-round. Source removal means agitating and extracting debris from the full length of each run, not just vacuuming what you can reach from the register. We use Rotobrush contact cleaning on the trunk lines and Nikro HEPA-contained vacuum systems to capture what we dislodge.
Most Ductwork Cleaning in San Lorenzo falls between $350 and $650 for a complete supply-and-return system on a 1,000-1,200 square foot Bohannon tract home. Homes with extensive crawl-space contamination or multiple trunk lines may reach $750-$950. We itemize this in writing before we start.
Supply and Return Line Cleaning
We clean both sides of your system. Supply ducts push conditioned air to your rooms; return ducts pull air back to the furnace. In San Lorenzo’s older homes, returns are often undersized and run through the same damp crawl spaces as supplies, so they accumulate the same mold and debris. We don’t skip them because they’re harder to reach.
Full System Cleaning with Photo Documentation
Before we pack up, we photograph the clean duct runs from inside where accessible, and we photograph your floors and surfaces to show the house is left exactly as we found it. That photo goes to you before the crew leaves. It’s part of the Cedarwell Care Promise, and it’s how you know the work happened to a standard.
Trusted Brands We Service in San Lorenzo
We carry equipment and components from Nikro, Honeywell, Aprilaire, and Abatement Technologies on every San Lorenzo job. Nikro’s HEPA-contained vacuums are what we use for source removal in those tight crawl spaces, Abatement Technologies provides the negative-air machines we set up when mold is present, and Honeywell and Aprilaire media filters are what we recommend when a homeowner’s ready to upgrade from the fiberglass panel that’s been in their furnace since 2008. We don’t use rental-grade gear, and we don’t show up hoping we can borrow what we need. Our trucks are stocked for Bohannon-era duct configurations specifically, which means faster turnaround and no return trips for parts.
Common Air Duct Cleaning Problems We See in San Lorenzo Homes
- Mold and mildew in crawl-space flex duct. San Lorenzo’s persistent humidity, especially in winter and spring, keeps dirt crawl spaces damp enough that mold establishes inside flex duct runs within a few seasons of any vapor barrier failure. We see this in pre-1955 Bohannon homes where the original dirt floor was never sealed.
- Collapsed flex duct sitting on damp soil. The 16-inch clearance in many Bohannon crawl spaces means flex duct was stapled up with minimal support. Over 40 years, sagging puts the duct in direct contact with soil, which accelerates deterioration and blocks airflow to back rooms.
- Rodent damage in unsealed crawl spaces. Low-clearance dirt crawl spaces with access gaps invite rodents, and we’ve found chewed flex duct and nesting material in supply runs from homes near San Lorenzo Creek’s greenbelt corridors.
- Oversized furnaces fighting restricted ductwork. The 1970s gas furnace retrofits in Bohannon homes often moved more air than the original duct design could handle. When we add decades of debris and collapse, blower motors run hot and draw excess amperage, which shows up as higher PG&E bills and premature motor failure.
Pricing for Air Duct Cleaning in San Lorenzo, CA
Here’s what air duct cleaning actually costs in San Lorenzo’s market:
| Service | Typical Range |
|---|---|
| Full residential duct cleaning (supply + return) | $350 - $650 |
| Homes with extensive crawl-space contamination | $750 - $950 |
| Air Duct Repair (section replacement) | $280 - $520 |
| Full supply-line replacement (small Bohannon home) | $800 - $1,400 |
| Video inspection (standalone) | $150 - $250 |
What moves you within these ranges: crawl-space accessibility, number of trunk lines, whether we find mold requiring contained removal, and if we need to replace failed flex duct while we’re there. We don’t charge per vent. We quote one flat price per system, agreed in writing before work starts. No surprises on the invoice. Call (323) 918-4345 for a free estimate, and we’ll give you the exact number for your home.
We Also Serve Cities Near San Lorenzo
Our crews work throughout the East Bay, including Air Duct Cleaning in San Lorenzo and surrounding communities: Castro Valley, San Leandro, Union City, and Oakland. Each area has different housing stock and different duct challenges, and our Air Duct Cleaning teams are trained to recognize the difference between a Bohannon tract in San Lorenzo and a mid-century slab home in Castro Valley before we quote.
Serving San Lorenzo, CA - Our Local Coverage Area
We’re based in the San Lorenzo 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 Lorenzo
San Lorenzo’s Bohannon-era homes sit directly beside San Lorenzo Creek with low-clearance dirt crawl spaces that were never sealed, while inland Hayward has more slab-on-grade construction and newer developments with better moisture control. The persistent humidity in San Lorenzo’s microclimate keeps crawl-space ductwork damp enough that mold establishes and spreads faster than in drier areas just a few miles east. If you’re smelling mustiness from your registers, that’s likely why. Call (323) 918-4345 and we’ll inspect with a camera to confirm.
No. A fogging treatment deposits chemical mist on surfaces but does not remove the mold growth or the moisture-degraded flex duct that’s causing it. In San Lorenzo’s humid crawl spaces, fogging is especially ineffective because the damp conditions recolonize the run within a season. We perform source removal with agitation and HEPA-contained extraction, and we replace failed flex duct rather than masking it. Ask us about our process when you call (323) 918-4345.
Sometimes, but often no. If the flex duct is intact and properly supported, we can clean it thoroughly. If it’s collapsed, rodent-damaged, or mold-lined on the interior, cleaning alone moves debris toward your air handler and the problem returns. We video inspect first and show you what we found. Replacement sections are quoted separately with a written price before any cutting. Call (323) 918-4345 to schedule the inspection.
We provide photo documentation of the cleaned duct runs where accessible, and we photograph your home’s surfaces before we leave to confirm we left everything as we found it. Our work is backed by the 365-Day Done Right Promise and the Cedarwell Care Promise, which includes shoe covers, drop cloths, and a written price before any work starts. If it’s not right, we make it right. Call (323) 918-4345 to schedule.
We use professional-grade equipment from Rotobrush, Nikro, Honeywell, Aprilaire, and Abatement Technologies. Rotobrush contact agitation tools for source removal in supply lines, Nikro and Abatement Technologies HEPA-contained vacuums and negative-air machines for mold jobs, and Honeywell and Aprilaire filtration products when homeowners upgrade. This isn’t rental equipment. It’s what we own, maintain, and bring to every San Lorenzo job. Call (323) 918-4345 for specifics on your home’s needs.
On a Bohannon original off Via Alamitos, our tech pulled a register and found 40-year-old flex duct sagging onto damp soil in a 16-inch crawl space, with a mold-lined section collapsed across the run to the hall-closet furnace. We set up negative pressure with Abatement Technologies HEPA filtration, used camera inspection and agitation tools for source removal on the supply and return ducts, then replaced the failed flex rather than fogging it. The blower motor’s amp draw dropped back into spec and the homeowner stopped smelling the musty crawl-space odor at the registers.
San Lorenzo’s Bohannon-era tract grid - roughly 1,000-1,200 sq ft stucco homes built 1944-early 1950s - sits over low-clearance dirt crawl spaces right beside San Lorenzo Creek, so ambient humidity stays high enough that crawl-space flex duct runs corrode and grow mold far sooner than the slab-on-grade homes a few miles east in Castro Valley or inland Hayward. This isn’t a seasonal issue or a marketing angle. It’s the defining condition of the housing stock, and it’s why we approach San Lorenzo jobs with equipment and techniques specific to moisture-degraded ductwork in tight crawl spaces. We draw a hard line between genuine source removal and fogging treatments that don’t address the actual problem. If your home is on the Bohannon grid and you’ve never had your crawl-space ducts inspected, you’re likely living with conditions that affect your air quality and your utility bills whether you smell them yet or not.
Ready to find out what’s actually in your ducts? Call Morton’s Air Duct Cleaning at (323) 918-4345 for a free estimate. We’ll give you a written price before any work starts, and we’ll show you exactly what we found.
Written by Paul Adeyemi, Owner at Morton’s Air Duct Cleaning, serving San Lorenzo since 2005.