Air Duct Cleaning in San Francisco, CA
Air duct cleaning in San Francisco typically runs $380-$780 for a full residential system, with most jobs completed in a single visit by our background-checked crew. We carry specialized equipment for the city’s tight Victorian floor chases and retrofitted ductwork, and we disclose one honest price before lifting a single tool. Call (855) 401-6006 for a free estimate - you’ll get the full number on the phone, not at the door.
Why San Francisco Homes Are Different
San Francisco’s persistent marine layer pushes cool, moisture-laden air through building envelopes year-round, raising indoor relative humidity even on sunny days. Ducts that sit idle in this environment develop mold colonization that dry-summer inland cities never see. Compounding the moisture problem, the city’s dominant Victorian and Edwardian flats - pre-1930s stick-frame construction, most rebuilt after 1906 - were never designed for forced-air systems. Ductwork was retrofitted decades later into chases and floor cavities that constrain access and create dead spots where debris concentrates. In the Mission District, we’ve pulled material that hadn’t moved since the 1980s because the original installer left a 90-degree bend with no clean-out.
Air Duct Cleaning in San Francisco
Our Air Duct Cleaning service is built around the reality of San Francisco’s housing stock: cramped retrofitted chases, multi-unit shared duct systems, and the marine layer’s constant humidity. We camera-inspect every system before quoting, so the price you hear is the price on the invoice.
Residential Duct Cleaning
San Francisco’s Victorian and Edwardian flats present residential duct cleaning challenges found almost nowhere else. Most of these buildings were rebuilt after 1906 with construction methods that predated forced-air systems entirely; any ductwork was added decades later as an afterthought, often routed through undersized floor voids with no clean-out access between levels. We use flexible-shaft brush systems that can navigate these restrictions, and a full residential system cleaning in San Francisco typically runs $380-$620. Pre-1980 buildings frequently have asbestos-wrapped duct insulation that we identify during our video inspection before proceeding.
Supply Duct Cleaning
Supply ducts in San Francisco’s retrofitted systems often terminate in floor registers that double as the only access points, forcing our technicians to work backwards from each register using camera-guided flexible shafts. The marine layer’s persistent humidity makes these supply lines particularly prone to mold colonization, especially in south-facing units where temperature differentials draw moist air inward. Supply duct cleaning as a standalone service in San Francisco ranges from $220-$380, and we include post-cleaning camera verification so you see the difference.
Why does my San Francisco Victorian flat have mold in the ducts even without a leak?
The marine layer raises indoor relative humidity year-round, even when it’s sunny outside. Ducts that sit idle in this environment, especially in south-facing units with temperature differentials, develop mold colonization without any plumbing leak or roof failure. During our video inspection, we identify moisture-damaged sections and recommend targeted sanitizing after cleaning. Call (855) 401-6006 for an assessment.
Dryer Vent Cleaning in San Francisco
Dryer vent cleaning in San Francisco typically runs $150-$320, with standard single-family jobs on the lower end and multi-unit Victorian flats with shared chases on the higher end. We camera-inspect every vent before quoting because the marine layer causes lint to clump and adhere to duct walls, masking blockages that standard visual checks miss. Our Dryer Vent Cleaning crew carries portable equipment sized for the city’s cramped floor voids and interior partition cavities.
Vent Cleaning & Lint Removal
We use Rotobrush agitation systems and Nikro high-velocity vacuums to remove lint, debris, and the humidity-compacted buildup common in San Francisco’s coastal climate. Standard brushes often fail on the long, sharply bent runs we find in Victorian flats - our equipment is sized for your building’s reality, not a suburban ranch house. A standard single-family vent cleaning runs $150-$220, while multi-unit flats with shared chases or runs exceeding 35 feet typically fall in the $220-$320 range.
Bird Guard Installation
San Francisco’s dense urban environment means birds regularly nest in vent terminations, especially on older buildings with deteriorated caps. We install Guardsman bird guards to prevent recurrence, quoted separately based on vent size and access difficulty. Adding bird guard installation to a standard cleaning typically brings the combined service to $195-$305 in San Francisco.
How does San Francisco’s marine layer affect my dryer vent?
The persistent coastal humidity causes lint to clump and adhere to duct walls instead of flowing freely, which masks partial blockages and accelerates corrosion in metal components. This is why we camera-inspect every San Francisco job - a vent that looks clear from the outside can be 60% obstructed inside. If your dryer’s cycle times have crept up, call (855) 401-6006 for an inspection.
HVAC Cleaning in San Francisco
HVAC cleaning in San Francisco typically runs $280-$650 for residential systems, with most jobs completed in a single visit. We’re familiar with the tight floor cavities and retrofitted chases of Victorian and Edwardian flats from the Mission District to Nob Hill, and we dispatch with the equipment and patience these older buildings demand. Our HVAC Cleaning service includes camera inspection of all accessible components before we quote.
Evaporator Coil & Blower Cleaning
The evaporator coil in your San Francisco home sits in cool, humid air for much of the year thanks to the persistent marine layer, creating a biofilm that reduces heat transfer and drives up energy bills. We clean coils with professional-grade foaming agents and low-pressure rinses that won’t damage delicate fins - critical in older systems where replacement parts may be obsolete. A typical evaporator coil cleaning runs $180-$340, while blower cleaning - which includes wheel, housing, and motor assembly removal - falls between $220-$380.
Condenser Cleaning
San Francisco’s coastal salt air and fog residue coat condenser coils with a film that insulates against heat rejection. We acid-wash and fin-straighten outdoor condensers, paying attention to the corrosion patterns we see frequently in Richmond and Sunset District homes within blocks of the Pacific. Condenser cleaning in San Francisco typically costs $160-$290, and we include a written report on any corrosion that may affect longevity.
Does the marine layer in San Francisco make my ducts more prone to mold?
Yes. San Francisco’s persistent marine layer pushes cool, moisture-laden air through building envelopes for much of the year, raising indoor relative humidity even on sunny days. Ducts that sit idle between heating and cooling seasons in this environment are prone to mold colonization in ways that dry-summer Central Valley cities never experience. We camera-inspect for microbial growth that visual checks miss, and we apply coil treatments that inhibit regrowth. Call (855) 401-6006 to schedule.
Duct Repair & Sealing in San Francisco
Most duct repair jobs in San Francisco run $280-$650, and our crew can usually be there same day or next. We’re familiar with the parking constraints on Nob Hill, the tight alley access in the Mission, and the multi-unit coordination that Victorian flats always seem to require. Our Duct Repair & Sealing service starts with camera inspection and ends with a 90-Day Done Right Promise in writing.
Duct Sealing
Leaky ducts waste 20-30% of heated and cooled air in most homes, and in San Francisco’s older buildings with retrofit ductwork that percentage climbs higher. We seal joints, seams, and connections using professional-grade mastic sealant and metal-backed tape rated for the humidity that the marine layer pushes through building envelopes year-round. Full duct sealing for a small single-family home or flat unit runs $450-$650, and our camera inspection verifies the seal before we leave.
Flex & Metal Duct Repair
Flex duct gets crushed during retrofit installation in San Francisco’s tight floor cavities, or it degrades after years of flexing in spaces never designed for HVAC. A typical flex duct repair in a Victorian flat runs $280-$420. Rigid metal duct panels pop loose in narrow floor cavities as old buildings settle, especially on hillsides in Noe Valley and Visitacion Valley; metal duct panel reseating and reinforcement runs $320-$480. Where corrosion has eaten through galvanized steel from decades of condensation, we section in new metal or transition to flex duct where space demands it.
How does San Francisco’s marine layer affect duct repair work in my Victorian flat?
San Francisco’s persistent marine layer raises indoor humidity even on sunny days, promoting mold colonization and degrading sealants that would hold fine in drier climates. Duct systems sit in damp conditions for months, so we use marine-layer-proof mastic sealant and verify every seal with camera inspection to prevent moisture intrusion after repair. Call (855) 401-6006 for a free estimate.
Air Quality & Sanitizing in San Francisco
San Francisco homeowners dealing with musty ducts, lingering odors, or post-wildfire contamination need a sanitizing approach built for this city’s unique conditions. We understand how the marine layer, legacy construction, and multi-unit layouts create challenges no suburban playbook covers. Our Air Quality & Sanitizing service targets the source, not just the symptom, with one honest price shown before we start.
Mold Treatment
San Francisco’s coastal humidity seeps into unlined partition cavities of Victorian flats, creating mold colonies that standard fogging can’t reach without first accessing multiple tenant units. Our mold treatment begins with camera inspection and HEPA vacuuming of all accessible runs, followed by EPA-registered anti-microbial application. A typical mold treatment in San Francisco runs $450-$850 depending on accessible duct length and whether asbestos identification is needed first.
UV Light Installation
UV light installation is especially effective in San Francisco precisely because the marine layer creates the mold-friendly conditions that UV systems are designed to suppress. We specify Honeywell and Aprilaire equipment rated for continuous high-humidity operation and position lights where the full airflow passes - critical in the cramped, irregular ductwork of Victorian flats. UV light installation with placement optimization for legacy ductwork runs $800-$1,400.
Can you safely sanitize ducts with asbestos tape in a pre-1930 San Francisco flat?
Yes, but the approach changes. We first identify asbestos-wrapped insulation or original asbestos-backed duct tape through visual inspection, then modify our cleaning method to avoid disturbing those materials while still reaching mold and bacteria in adjacent accessible runs. Anti-microbial fog applied directly through asbestos layers is ineffective and potentially hazardous. Call (855) 401-6006 for a proper assessment.
Brands We Service in San Francisco
We stock parts and service equipment from Honeywell, Aprilaire, Abatement Technologies, and Guardsman - the same brands serious HVAC contractors specify. Most repairs that don’t require specialized ordering are completed in a single visit. See our brands for full coverage details.
Pricing for Air Duct Cleaning in San Francisco, CA
| Service | Typical Range in San Francisco |
|---|---|
| Residential Duct Cleaning (full system, single unit) | $380 - $620 |
| Full System Cleaning | $580 - $780 |
| Supply Duct Cleaning | $220 - $380 |
| Return Duct Cleaning | $180 - $320 |
| Commercial Duct Cleaning | $680 - $1,400 |
| Video Inspection (standalone) | $149 - $220 |
| Standard Dryer Vent Cleaning | $150 - $220 |
| Multi-Unit / Complex Dryer Vent Cleaning | $220 - $320 |
| Full HVAC System Cleaning | $280 - $650 |
| Evaporator Coil Cleaning | $180 - $340 |
| Blower Cleaning | $220 - $380 |
| Condenser Cleaning | $160 - $290 |
What moves the price: number of registers and returns, accessibility of duct runs, presence of mold or post-wildfire ash requiring HEPA containment, whether asbestos identification is needed, and multi-unit buildings with shared duct systems requiring tenant coordination. We disclose the full price before lifting a single tool - no coupons, no changes at the door.
Neighborhoods We Serve in San Francisco
We work across San Francisco’s varied terrain, from the fog-heavy blocks near Ocean Beach to the sunnier eastern slope of Potrero Hill. Most calls in the 94122, 94123, 94124, and 94125 ZIP codes receive same-day or next-day scheduling.
- Mission District
- Noe Valley
- Chinatown
- Visitacion Valley
- Nob Hill
Service Area - Cities Near San Francisco
Our San Francisco Bay Area office dispatches crews throughout the region. We regularly serve San Francisco, CA homeowners alongside neighbors in Mission District, CA, Noe Valley, CA, Chinatown, CA, and Visitacion Valley, CA. We also work across the county line in Daly City, CA for properties with similar coastal humidity and pre-war construction challenges.
Serving San Francisco, CA - Our Local Coverage Area
Bellows Air Duct & Vent Co. of California crews serve San Francisco and the communities around it; dispatch is coordinated from our San Francisco Bay Area office. The map shows the San Francisco coverage area; if your address is on it, we can help.
Also serving nearby: San Francisco, CA, Mission District, CA, Noe Valley, CA, Chinatown, CA, Visitacion Valley, CA, Daly City, CA.
FAQs About Air Duct Cleaning in San Francisco
Yes, most multi-unit Victorian and Edwardian flats in San Francisco require building owner or HOA approval before we can access shared chases or common areas. We provide a written scope and insurance documentation on request, and we’re accustomed to coordinating with property managers in Nob Hill and the Mission District. Call (855) 401-6006 and we’ll walk you through what’s typically needed.
We camera-inspect every system before and after cleaning, and you see the footage in real time on a handheld monitor. The video record shows exactly what was in your ducts and what remains after our work - no claims without proof. If anything doesn’t meet our standard, our 90-Day Done Right Promise means we return at no charge with no paperwork required. Call (855) 401-6006 to schedule your free estimate.
Ready to get your ducts cleaned right? Call Bellows Air Duct & Vent Co. at (855) 401-6006 for a free estimate. We’ll give you one honest price before any tool leaves the truck, and we stand behind our work with a 90-Day Done Right Promise in writing.
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 Francisco Customers Say
"They ran a negative air machine on the whole system rather than the shop vac on a stick that the cheap outfit uses. Showed me the before and after photos from inside the trunk line and it was genuinely disgusting."
- Katie Sullivan"Did the dryer vent while they were here for a small add on price. The dryer finishes a load in one cycle now instead of two."
- Adam Pruitt"The allergies in this house had been bad since we moved in. It has been a couple of months since they did the ducts and it is noticeably better. Not a miracle, but real."
- Vikram Rao