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 South San Francisco, CA
Air duct repair in South San Francisco usually means fixing leaks in original 1940s sheet-metal runs on the flats or re-supporting torn flex duct in damp crawlspaces east of El Camino. Most homes here run two very different systems depending on which side of town you’re on, and the repair approach changes with it. We’re Hallmark Air Duct Cleaning, and we’ve served South San Francisco since 2011 with a full kit: Rotobrush and Nikro extraction equipment, Abatement Technologies negative-air containment, and in-house duct repair that most cleaning-only outfits don’t offer. Call (833) 467-6681 when you need someone who treats ductwork as a system, not a quick vacuum job.
Why South San Francisco Homes Are Different
South San Francisco sits directly under the SFO flight path and next to the industrial east side along the bay. That means the stuff accumulating in ductwork here isn’t just household dust. It’s a mix of jet exhaust particulate, refinery and biotech-park offgassing, and bay-moisture film that settles into systems which, in many cases, haven’t been opened since the home was built. The climate compounds it: cool, foggy summers and damp marine air mean HVAC systems run lightly, so ducts sit cool and moist for much of the year. That’s a mold and mildew environment, especially in flex duct and attic insulation, not the dry dust-bake you get in hot inland cities.
Housing stock splits the work in two. West of El Camino, the 1920s through 1950s stucco bungalows and ranch homes often still have original rectangular galvanized sheet-metal ducts, many venting through interior wall chases with no accessible attic run. Those joints separate over decades, and gravity furnaces pull dust continuously. East of El Camino and around the biotech corridor off Eccles Avenue, you’ll find 1980s through 2000s construction with flexible insulated ducting that sags, tears, and traps moisture in low-clearance crawlspaces that flood during winter storms. A tech working Grand Avenue is solving a different problem than one working the east side. We carry equipment for both.
Styles & brands we work with
- Whole-home duct cleaning
- Dryer vent cleaning
- Camera inspection
- Sanitizing & deodorizing
Our Main South San Francisco Services
Most homeowners in South San Francisco reach out to us for one of two reasons: they want their ducts cleaned, or they want their dryer vent cleared before it becomes a fire risk. Here’s what each involves.
Air Duct Cleaning in South San Francisco
Duct cleaning here means pulling decades of SFO jet particulate, construction dust, and bay-moisture film out of runs that haven’t been touched since installation. On the flats, we’re often working with original 1940s sheet-metal ducts with no attic access, so we clean through the register openings with rotary-brush and negative-air equipment that contains what it dislodges rather than blowing it into the living room. On the east side, the job is typically flex duct that has sagged and collected debris in damp crawlspaces. Each system gets matched to the right tool, not a one-size pass. See our dedicated page for the full scope: Air Duct Cleaning in South San Francisco.
Dryer Vent Cleaning in South San Francisco
South San Francisco’s older homes often route dryer exhaust through long, narrow wall chases or under-floor runs that trap lint fast. In the damp bay climate, that lint turns into a caked, compacted layer that restricts airflow and holds heat. We treat dryer vent work as a fire-safety service, not a filler add-on, because in homes built before modern venting codes, the margin for error is thinner. The job involves cleaning the full run from dryer to exterior termination and checking for the crushed or separated sections that are common in crawlspace-routed vents. Full details here: Dryer Vent Cleaning in South San Francisco.
Air Duct Repair in South San Francisco
Air duct repair in South San Francisco is often the difference between a cleaning that holds and one that recontaminates within a year. Homes west of El Camino built between the 1920s and 1950s frequently have original galvanized sheet-metal runs with separated joints and rusted seams, while east-side homes from the 1980s and 2000s deal with torn flex duct, crushed runs under low-clearance crawlspaces, and moisture damage from bay-damp air. We offer repair in-house because most cleaning-only companies won’t touch the structural problem. That’s the scope of our Air Duct Repair service.
Ductwork Repair
Signs you need it
Rooms that never reach temperature, visible duct tape peeling off joints, or a spike in dust after cleaning all point to leaks that need sealing rather than another cleaning pass.
What it costs in South San Francisco
Ductwork repair in South San Francisco generally runs between $280 and $4,800 depending on how many runs are compromised and whether they’re in an accessible attic or a low-clearance crawlspace.
How we do it
We locate the failing sections, reseal or replace the affected joints and hangers, and verify airflow at the register before we leave.
Air Duct Replacement
Signs you need it
Crushed flex duct, rust-through on sheet metal, or mold growth inside insulated runs are conditions that can’t be reliably patched and call for replacement.
What it costs in South San Francisco
Air duct replacement in South San Francisco typically lands between $2,850 and $6,200 for a standard home, with the range driven by duct length, accessibility, and whether collapsed runs run under the house.
How we do it
We remove the failed ductwork, install new runs with proper slope and support, seal every connection with mastic and UL-listed tape, and rebalance airflow to the registers.
HVAC Duct Installation
Signs you need it
New additions, converted garages, or a furnace replacement that no longer matches the existing duct layout often require new duct installation rather than a patch job.
What it costs in South San Francisco
HVAC duct installation in South San Francisco generally runs from $3,600 to $9,800 depending on the number of runs, whether the home is a single-story bungalow on the flats or a larger east-side infill build, and how much of the layout is accessible.
How we do it
We design the run layout to match the system’s static pressure, cut and fit each section, seal and support it properly, and verify total airflow before the job closes out.
What Air Duct Repair Costs in South San Francisco
| Item | Typical range in South San Francisco |
|---|---|
| Ductwork repair (sealing leaks, replacing hangers, patching runs) | $280 – $1,200 |
| Air duct replacement (full-home) | $2,850 – $6,200 |
| HVAC duct installation (new runs for additions or conversions) | $3,600 – $9,800 |
How long does duct repair take in South San Francisco?
Most repairs finish in a half day to a full day, but replacement of multiple collapsed runs under a low-clearance east-side crawlspace can stretch to two or three days.
Do I need HVAC duct repair or a full replacement in South San Francisco?
If the duct metal is sound, leaks and separated joints can be repaired economically. When rust, mold, or crush damage runs through long sections, replacement is usually the better call.
Brands We Service in South San Francisco
We work with the equipment already installed in South San Francisco homes, including systems and components from Honeywell, Aprilaire, Abatement Technologies, and Guardsman. We carry common replacement parts, such as Honeywell filtration hangers, Aprilaire media-to-duct transitions, and Guardsman access panels, so many repairs finish the same day rather than waiting on shipping. See our brands for the full list of what we service.
See the difference
Before
After
Before
After
Before
AfterPricing for Air Duct Cleaning Company in South San Francisco, CA
| Service | Typical range in South San Francisco |
|---|---|
| Air duct cleaning (full system) | $325 – $675 |
| Air duct cleaning with sanitizing treatment | $500 – $900 |
| Dryer vent cleaning | $90 – $210 |
| Dryer vent cleaning with long-run or multi-story access | $140 – $350 |
| Air duct repair (sealing leaks, replacing hangers) | $280 – $1,200 |
| Air duct replacement (full-home) | $2,850 – $6,200 |
| HVAC duct installation (new runs) | $3,600 – $9,800 |
| Duct insulation replacement or upgrade | $1,100 – $3,200 |
Prices in South San Francisco push toward the higher end when we’re working in low-clearance crawlspaces off Eccles Avenue, when original 1940s sheet-metal runs have separated in inaccessible wall chases, or when jet-particulate and bay-damp conditions have left mold inside flex duct that needs removal rather than simple cleaning. We give one flat price per system before work starts, agreed in advance, so the invoice you sign is the price you pay.
Neighborhoods We Serve in South San Francisco
Our trucks cover all of South San Francisco, from the pre-war bungalows west of El Camino Real to the 1980s and 2000s infill along the biotech corridor. We typically reach any South San Francisco address within one to three business days for a scheduled appointment.
- Old Town / downtown near Grand Avenue
- The flats west of El Camino Real (ZIP 94080)
- East side near the biotech district and Eccles Avenue (ZIP 94083)
- Westborough and the hillside neighborhoods
- Sunshine Gardens and the areas near South San Francisco station
Service Area – Cities Near South San Francisco
Beyond South San Francisco, we also work in the cities and districts just over the line. Homeowners in Daly City, CA deal with similar fog-damp duct conditions, while SoMa, CA brings larger commercial-conversion and loft systems. Chinatown, CA has older multi-story stock with long vertical chases, and Alameda, CA mixes Victorian-era homes with mid-century runs that carry bay moisture just like ours. If you’re nearby and need professional duct work, call us and we’ll confirm coverage.
Serving South San Francisco, CA – Our Local Coverage Area
We’re based in the South San Francisco 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 South San Francisco
We schedule South San Francisco appointments within one to three business days for most homes. If you have a known leak or a dryer vent that hasn’t been cleaned in years, call (833) 467-6681 and we’ll set a specific time to be there.
Most duct repair and replacement work in existing single-family homes doesn’t require a permit, but if the job involves mechanical changes to a furnace or water heater, South San Francisco’s building department may need sign-off. We’ll flag that before work starts so there are no surprises.
Yes. Homes directly under the SFO approach accumulate a fine dark particulate on return grilles and inside supply runs that inland South San Francisco neighborhoods don’t see as heavily. Combined with bay damp, it means those systems often need cleaning every three to five years instead of less often.
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 South San Francisco 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."
- Danielle Delaney"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."
- Simone Ellison"Told me straight that our ducts were in decent shape and didn't need doing every year like the mailer companies claim."
- Tim Quinn