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 Foster City, CA
Air duct repair in Foster City is a different job than it is almost anywhere else on the Peninsula. Most of this city sits on engineered fill in the San Francisco Bay marsh, and the original 1960s and 1970s homes were built fast, with rigid sheet-metal duct trunks that now show their age in very specific ways: salt-air corrosion at galvanized joints, condensation damage from year-round marine-layer damp, and sagging flex branches that pull apart at the seams. Everclear Air Duct Cleaning has served Foster City since 2017, and we bring professional-grade Rotobrush and Nikro equipment to jobs that need more than a surface wipe. If your system is leaking air into the walls or pulling damp crawlspace air into the living room, call (833) 620-5944 for an estimate.
Why Foster City Homes Are Different
Foster City was built on bay fill, and that fact shaped everything about how the housing stock performs today. The slab-on-grade ranchers and low-rise planned-unit developments from the 1960s and 1970s were constructed quickly, many with underslab duct runs and short flex branches that have been patched, re-taped, or simply left to sag over the decades. The persistent marine layer keeps things cool and damp year-round, with overnight moisture and winter fog that condenses inside ductwork and settles into attic insulation. We routinely see moisture staining on galvanized trunk joints that has nothing to do with how much the heater ran. It has everything to do with salt-laden Bay air and slab-level damp working on original ducting for fifty-plus years. A large share of the city’s housing is HOA-governed as well, so vent and roof-penetration work often needs architectural approval before anyone touches a register or a chase.
Styles & brands we work with
- Whole-home duct cleaning
- Dryer vent cleaning
- Camera inspection
- Sanitizing & deodorizing
Our Main Foster City Services
Most Foster City homeowners call us for one of two reasons: ducts that have never been properly cleaned since the house was built, or dryer vents that run long distances through walls and attics. Both jobs need equipment that can show the work when it’s done.
Air Duct Cleaning in Foster City
Cleaning ducts in Foster City is less about dust from heating and more about what the marine layer leaves behind: condensation inside the system, mold growth on damp insulation, and salt-air corrosion particles pulled through aging sheet metal. We run Rotobrush rotary brush systems and Nikro HEPA-rated vacuum equipment through the full duct path, from the return plenum to the register boots, and we can show you the before-and-after of your own system. Full-system care means we address the ducts themselves, not just the visible registers. Air Duct Cleaning in Foster City is covered in detail on its own page, with local pricing and what to expect during the visit.
Dryer Vent Cleaning in Foster City
Foster City’s HOA-governed townhome and condo complexes often route dryer vents through long interior chases before they reach the exterior wall. Lint builds up in those runs faster than homeowners expect, and the marine damp makes it stick instead of blowing clear. That is a dryer vent fire risk, plain and simple. We clean the full vent path, from the dryer connection to the exterior termination, and check for separation, kinks, and rodent screens that have clogged. Dryer Vent Cleaning in Foster City has the full scope on its own page, including how we verify the vent is moving air correctly.
Air Duct Repair in Foster City
Air duct repair in Foster City usually means one of two things: fixing leaks and separations in original 1960s-70s sheet-metal ducting, or replacing runs that have corroded or collapsed under the damp, salt-heavy air this city lives with. The problem with leaking ducts is not just wasted air. A separated return draws unconditioned crawlspace or garage air into the system, pulling moisture, dust, and whatever else is in that space into every room you heat or cool. We opened the Air Duct Repair service line for exactly this reason: cleaning alone cannot fix a duct system that is physically failing, and Foster City’s original duct work, with its underslab runs and short flex branches, is reaching the end of its usable life in a lot of homes. Our team uses Abatement Technologies containment equipment on every repair job, so the debris and dust we disturb during the work is captured and removed from the home rather than redistributed into living spaces.
Ductwork Repair
Signs you need it
Rooms that never reach the temperature you set, whistling or hissing at registers, unexplained dust settling on surfaces days after cleaning, and musty odors that start when the blower kicks on all point to separated or corroded duct runs.
What it costs in Foster City
Isolated ductwork repair in Foster City typically runs $300 to $650 per affected run, depending on access and how much of the existing duct has to be replaced.
How we do it
We locate the separation or corrosion point, set up Abatement Technologies containment to keep disturbed dust out of living areas, replace or re-seal the affected section with Guardsman sealing products, and verify airflow at each register.
Air Duct Replacement
Signs you need it
Galvanized trunk lines with heavy rust scaling, flex branches that have collapsed or torn open, and returns pulling damp air from underslab chases are situations where patching no longer makes economic sense.
What it costs in Foster City
Air duct replacement in Foster City ranges from $2,800 to $5,500 for a typical single-story rancher, which reflects the full material and labor scope of removing and replacing the original runs.
How we do it
We map the existing duct layout, remove the failed runs under containment, install new rigid trunk and flex branch lines sized for the system, seal every joint, and balance airflow at each register before we leave.
What Air Duct Repair Costs in Foster City
| Item | Typical range in Foster City |
|---|---|
| Ductwork repair (per affected run) | $300 – $650 |
| Air duct replacement (single-story home) | $2,800 – $5,500 |
| Full duct replacement with new trunk and branches | $4,500 – $8,000 |
What pushes the price upward in Foster City is access. Underslab runs are common here, and when a duct in the slab is the problem, repair means routing a new run through an attic or soffit instead. HOA approval can also add time to a job, though it rarely changes the duct work price. We quote one flat price for the system before any work starts, and that price does not change unless we find something structural that no one could have foreseen.
Can you repair ducts without tearing out drywall?
Often yes. Most accessible duct repairs and replacements route through the attic, crawlspace, or existing register openings. We remove only what is necessary, and we protect floors and surfaces while we work. Homes with no attic access above the affected run may need a small access panel.
How long does duct replacement take in Foster City?
Most single-story Foster City homes take one to two days for full duct replacement. Homes with underslab runs that need rerouting can take longer because new paths have to be cut through framing. We give you a timeline with the estimate, and HOA approvals are handled before we schedule.
Brands We Service in Foster City
We work with the equipment and filtration brands that hold up to Foster City’s damp, salt-heavy air. Our trucks carry Honeywell and Aprilaire filtration products for homes that need more than a duct cleaning, and we use Nikro HEPA-rated equipment on every job. See our brands for the full list of what we stock and service.
See the difference
Before
After
Before
After
Before
AfterPricing for Air Duct Cleaning Company in Foster City, CA
| Service | Typical range in Foster City |
|---|---|
| Air duct cleaning (single system) | $450 – $650 |
| Air duct cleaning (larger home, two systems) | $650 – $950 |
| Dryer vent cleaning | $90 – $160 |
| Ductwork repair (per affected run) | $300 – $650 |
| Air duct replacement (single-story home) | $2,800 – $5,500 |
| Full duct replacement with new trunk and branches | $4,500 – $8,000 |
| HEPA filtration add-on (Honeywell media cabinet) | $550 – $1,100 |
| Aprilaire whole-home dehumidifier add-on | $1,500 – $2,800 |
Foster City prices run slightly higher than inland Peninsula cities because damp, salt-air conditions accelerate duct corrosion, and a meaningful share of the work involves repair or replacement rather than cleaning alone. What you will not see is a low teaser price that becomes a bigger invoice once we are on site. We quote one flat price for your system before work starts, and that is the number on the invoice when we finish.
Neighborhoods We Serve in Foster City
We work throughout Foster City’s 94404 ZIP code and the surrounding area. Most jobs we handle here are in the original lagoon-side neighborhoods and the HOA-governed developments built during the city’s first growth decade.
- Isle Cove
- Dolphin Bay
- Sea Colony
- Promontory Point
- Whaler’s Island
We schedule Foster City jobs every weekday, and we can usually have a technician at your door within three to five business days of your call, depending on the size of the job.
Service Area – Cities Near Foster City
Everclear Air Duct Cleaning handles duct cleaning, repair, and dryer vent work across the mid-Peninsula. If you are just outside Foster City, you are still in our service area. We also serve San Mateo, CA, Burlingame, CA, San Bruno, CA, and South San Francisco, CA. The same equipment and the same flat-price approach apply in every city we cover, including Foster City.
Serving Foster City, CA – Our Local Coverage Area
We’re based in the Foster City 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 Foster City
We schedule Foster City jobs on weekdays, and most calls get a visit within three to five business days. HOA approval, when required, is usually the biggest variable in the timeline. Call (833) 620-5944 and we will give you a straight answer on the schedule before you commit to anything.
In many Foster City developments, yes. Anything that touches a roof penetration, common-wall chase, or shared ventilation path often needs architectural committee sign-off. We can tell you what your HOA will require based on the work scope, and we handle the documentation on our end before the crew arrives.
We cover the entire 94404 ZIP code, from the lagoon-side neighborhoods to the developments along the Bay side. Our trucks are stocked for Foster City’s typical housing stock, which means we arrive prepared for 1960s-70s sheet-metal duct systems, underslab runs, and HOA-governed properties. Get in touch at (833) 620-5944 and we will let you know exactly when we can get to your part of town.
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 Foster City Customers Say
"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."
- Javier Morales"Two guys, about three hours, plastic down at every register, and they wiped the vent covers before putting them back."
- Diego Delgado"Ran a negative air machine on the whole system rather than the shop vac on a stick that the cheap outfit down the road uses. Showed me the before and after photos from inside the trunk line and it was genuinely disgusting."
- Paul Schaefer