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.
Air Duct Cleaning Company in San Lorenzo, CA
Air duct repair in San Lorenzo usually means one thing: patching, sealing, or replacing sections of galvanized steel ductwork that have been moving air through the same house since the Truman administration. Most San Lorenzo homes were built between 1945 and 1955, and their original sheet-metal ducts are now 70-plus years old. We clean, repair, and replace those systems with equipment built for the job, not a consumer vacuum. If you’re searching for a company that understands what’s behind the hallway grille of a 1950s tract home, you’ve found it. Call (877) 824-3121 to schedule.
Why San Lorenzo Homes Are Different
San Lorenzo is one of the Bay Area’s true post-war suburbs. The housing stock speaks to that era: long, low ranch homes and Eichler-influenced designs with shallow-pitch roofs, concrete slabs, and a central furnace closet. The duct systems in these homes were installed when air conditioning was rare and furnace filters were an afterthought. Gravity furnaces moved warm air through floor registers without much fan pressure, and the return path was often a single grille in the hallway pulling air through an open stud cavity or a dedicated return plenum.
What this means for duct work today: technicians opening a 70-year-old return-air plenum in San Lorenzo routinely find decades of compacted dust, pet hair, and the occasional rodent or bird nesting debris. The galvanized steel trunk lines are frequently rusted at the seams from years of cool, damp winter air condensing inside the ducts. Joints that were sealed with asbestos-containing tape or mastic in the 1950s now crumble when disturbed. That’s not a sales line; it’s what the age of the housing stock produces. Cleaning these systems without damaging them requires knowing which ducts can be scrubbed and which need to be handled as repair work from the start. That distinction, more than anything, is what separates a real duct specialist from a generalist in San Lorenzo. You can read more about our approach on our home page.
Styles & brands we work with
- Whole-home duct cleaning
- Dryer vent cleaning
- Camera inspection
- Sanitizing & deodorizing
Our Main San Lorenzo Services
Most calls we take from San Lorenzo homeowners come down to two jobs: cleaning years of accumulated debris from existing ductwork, and cleaning dryer vents that run through some of the longest, tightest rooflines in Alameda County. Here’s what each involves in this specific community.
Air Duct Cleaning in San Lorenzo
San Lorenzo homes with original 1950s ductwork often haven’t had a full system cleaning since the ducts were installed. Cold-air returns pull from a single hallway grille, which means every room’s air passes through one consolidated path that picks up decades of dust and skin cells. Our Rotobrush and Nikro systems run a powered agitation head through the full trunk and branch lines, and we capture what’s loosened at the air handler with a commercial-grade HEPA-filtered negative air unit. The result is measurable: less dust settling on furniture within the first week. Learn what’s included on our Air Duct Cleaning in San Lorenzo page.
Dryer Vent Cleaning in San Lorenzo
Dryer vents in San Lorenzo ranch homes often run 20 to 40 feet from the laundry alcove to an exterior wall or roof cap, with multiple elbows to navigate around post-war floor plans. That length and bend count is exactly what lets lint collect at the joints until airflow drops to unsafe levels. We clean dryer vents as a standalone service with rotary brushes sized to the duct, not as an add-on afterthought. The fire-safety benefit is the headline; the shorter dry times are the side effect. Details are on the Dryer Vent Cleaning in San Lorenzo page.
Air Duct Repair in San Lorenzo
Duct repair in San Lorenzo is not a niche add-on. It’s the service many homeowners call about first, usually after a cleaning company elsewhere found damage and left them with a quote for work that was out of scope. In a 1950s tract home, duct seams separate at the elbows, floor-register boots rust where they meet the slab, and return plenums in the hallway wall are often leaking into the stud bay instead of pulling from the living space. We repair what’s broken, replace what’s beyond repair, and install new runs where the old ones were never designed for modern airflow. The same crew handles all of it, from cleaning to repair. Our full Air Duct Repair service page has the details.
Ductwork Repair
Signs you need it
Rooms that never reach the thermostat temperature, a persistent musty odor from the hallway return grille, or visible rust trails along exposed duct seams in the garage or crawlspace.
What it costs in San Lorenzo
Localized ductwork repair in San Lorenzo typically runs $400 to $950, depending on access and how many joints need resealing.
How we do it
We locate the leak with a visual inspection and smoke test where needed, then mechanically fasten, seal with mastic or foil tape, and confirm the repair with static-pressure readings before we leave.
Air Duct Replacement
Signs you need it
Crushed or collapsed runs under the floor, ducts with rust-through or disintegrating fiberboard trunks, or systems that still leak heavily after a repair attempt.
What it costs in San Lorenzo
Replacing a full branch-run network in a typical San Lorenzo ranch home usually falls between $1,500 and $3,600, with partial replacement less.
How we do it
We remove the failed section, re-size the replacement to the room’s actual airflow requirement rather than matching what was there, and connect it with code-compliant fasteners and sealant.
What Air Duct Repair Costs in San Lorenzo
| Item | Typical range in San Lorenzo |
|---|---|
| Sealing accessible duct leaks (mastic, tape, collars) | $400 – $950 |
| Replacing one short duct run (under 10 feet) | $500 – $1,100 |
| Full branch-run replacement for a ranch home | $1,500 – $3,600 |
Can you repair ducts without replacing the whole system?
Yes. Most San Lorenzo homes with original galvanized steel only need seams resealed, boots reattached, and a few crushed sections swapped, not an entire system replacement. We quote only the work required.
How long does duct repair take in San Lorenzo?
Localized repairs usually take half to one full day. Full branch-run replacement in a 1950s ranch can take one to two days. Call (877) 824-3121 for a time estimate specific to your floor plan.
Brands We Service in San Lorenzo
We work on and around Honeywell media cabinets, Aprilaire filtration housings, and the kind of air quality systems that pair well with freshly sealed ducts. Having parts familiarity with those brands means fewer surprises mid-job. Stock on common adapters and collars covers most San Lorenzo homes without a special order. See what we maintain on our brands page.
See the difference
Before
After
Before
After
Before
AfterPricing for Air Duct Cleaning Company in San Lorenzo, CA
| Service | Typical range in San Lorenzo |
|---|---|
| Air duct cleaning (full system) | $450 – $900 |
| Dryer vent cleaning | $120 – $250 |
| Air duct repair (localized) | $400 – $950 |
| Air duct replacement (single run) | $500 – $1,100 |
| Air duct replacement (full branch system) | $1,500 – $3,600 |
| Duct sealing (accessible leaks) | $400 – $950 |
What pushes a San Lorenzo job toward the higher end is access: slab foundations bury duct runs under concrete, hall closets make return plenums tight to reach, and rusted floor registers can require cutting and patching to free the boot. We quote one flat price per system before any work starts, so the number you approve is the number you pay.
Neighborhoods We Serve in San Lorenzo
San Lorenzo is one unincorporated community, but its neighborhoods have distinct conditions. The original 1940s tract near the San Lorenzo Village area keeps the tightest floor plans and oldest floor-register ducts. Areas south of Hesperian Boulevard tend toward slightly newer builds with altered HVAC systems. East of the railroad tracks, homes deal with more dust from the industrial corridor.
- San Lorenzo Village
- Hesperian Corridor
- East Lewelling
- Via Arroyo
- Bockman Road area
Most San Lorenzo addresses are within a 15 to 25 minute dispatch for our team, and we group calls by neighborhood to cut down on wait times.
Service Area – Cities Near San Lorenzo
Beyond San Lorenzo, we work throughout the East Bay communities that share the same mid-century housing patterns. That includes Ashland, CA with its dense postwar builds, Cherryland, CA and its mix of older single-family homes, Fairview, CA up against the Hayward hills, and Union City, CA where our main shop is based.
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 Company in San Lorenzo
Most San Lorenzo calls are scheduled within the same week, and many within 48 hours. Duct cleaning and repair are scheduled jobs, not emergency callouts, so we set a specific arrival window rather than a vague “sometime today.” Call (877) 824-3121 to check current availability.
No. San Lorenzo is unincorporated Alameda County, and residential duct cleaning, sealing, and like-for-like replacement do not require county permits. Full system redesigns or any work that changes the HVAC layout may, and we’ll tell you before starting. Our team knows where the line sits.
Run the furnace fan for 20 to 30 minutes to normalize pressure across the system. That’s the real-world version of “breaking in” the work. If we installed new filtration, we’ll set the replacement schedule before we leave. Call (877) 824-3121 with any follow-up questions; we answer.
Duct Cleaning Union City has served San Lorenzo since 2015. For a free estimate on duct cleaning, dryer vent work, or duct repair, call (877) 824-3121.
What happens when you call
- 1A real person answersNo phone trees. Talk to a local air duct cleaning pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you. The visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What San Lorenzo Customers Say
"They photographed every return and supply before starting and sent me the file afterward. No upsell to a sanitizing treatment I didn't need."
- Adriana Castillo"My wife's allergies had been bad in this house since we moved in. It's been two months since they did the ducts and it's noticeably better. Not a miracle, but real."
- David Tran"Did the dryer vent while they were here for a small add on price. The dryer now finishes a load in one cycle instead of two."
- Emily Wong