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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AfterCarrier Air Duct Cleaning in San Francisco, CA | Hollis Air Duct Cleaning
Air Duct Cleaning in San Francisco for independent Carrier systems costs between $450 and $1,400 for a full system, depending on home size, duct accessibility, and whether we’re sealing open joist cavities or cleaning metal runs. We’re not a Carrier factory shop. We’re a local independent crew that has worked on Carrier furnaces connected to some of the oldest, foggiest, most awkward duct systems in the country. If you own a Carrier in San Francisco, the duct side of that system is usually where the trouble hides. Call (361) 326-5060 and we’ll tell you what a cleaning would involve before anyone steps foot in your home.
Why San Francisco Residents Choose Us for Carrier Service
Most air duct companies treat a Carrier furnace like any other box in the corner. We don’t, because in San Francisco that box is usually connected to ductwork that was installed before Carrier even made residential air handlers. Roy Castellanos, our owner, started in the mechanical trades in Los Angeles County and has spent years working specifically on Carrier systems tied to older sheet-metal and early flex duct. That matters here. A Carrier Infinity furnace bolted to a 1930s gravity-furnace return in the Richmond isn’t a normal job. It’s a retrofit puzzle, and our crew reads it the same way an electrician reads a fuse panel. We also stock Carrier-compatible filter housings, coil brushes, and sealing mastic for the common model lines we see in California, which keeps a San Francisco job moving instead of waiting on parts from a distributor in Fresno.
For Carrier-specific Carrier sales & service depth, this is what we do every day. Every technician arrives background-checked and uniformed, with a written price before any work starts. That’s The Garrison Standard we operate under, and it’s in writing on every invoice.
Common Carrier Air Duct Cleaning Problems We Solve in San Francisco
These are the five we see most on Carrier equipment in San Francisco homes. Not textbook problems. The ones that show up on our video screens.
- Galvanized duct flaking above a Carrier furnace. Marine fog off the Pacific pushes salt-heavy air into crawlspaces and basements. Carrier furnaces in the Sunset and Richmond routinely show white or gray rust flakes inside the supply plenum, breaking loose from 60-year-old galvanized steel. That metal ends up in the air stream and on your registers. We remove it, then assess whether the duct should be sealed or replaced.
- Deteriorating flex-duct liner in attic-less roof cavities. San Francisco row houses often have no real attic. Ducts run through a narrow cavity between ceiling and roof, where heat from the roof deck and fog-driven humidity cycle constantly. The interior liner of older Carrier flex runs breaks down and sheds fibers. We see it on video before we touch it, and we tell you honestly if cleaning is enough.
- Rodent debris in open floor joist returns. In pre-war housing, many Carrier furnaces were retrofitted onto original gravity-furnace returns. The return path is the open joist cavity between floors. Rats and mice use it as a highway. Droppings, nesting material, and dead pests collect there, then your Carrier blower pulls that air across the filter and into the house. This is not a dust problem. It’s a contamination problem.
- Mold inside the Carrier blower compartment. San Francisco’s marine layer keeps humidity high year-round. Carrier systems without modern whole-home filtration often grow mold on the blower wheel and housing, especially in attached homes where the air handler sits in a shared wall chase. Our cleaning includes the blower compartment, not just the ducts.
- Collapsed or crushed ducts beneath post-war additions. San Francisco has more unpermitted additions and foundation shifts than almost any city in the country. Carrier duct runs get kinked or crushed under shifted framing, and the furnace overworks trying to push air through. Cleaning exposes the restriction, and we will not sell you a cleaning that a crushed duct makes pointless.
Carrier Service in San Francisco: What Local Conditions Mean for Your Equipment
Here’s the thing about San Francisco that a generic Carrier page will never tell you. In the Sunset and Richmond districts, it’s common to find original 1930s gravity-furnace ducts that have never been retrofitted. The return-air path isn’t a duct at all. It’s literally the open floor joist cavity between the first floor ceiling and the second floor framing. We were called to a 1938 Edwardian row house in the Outer Sunset where the homeowner’s Carrier Performance furnace was short-cycling and leaving soot on the registers. Our video inspection showed the return path was the open joist cavity, packed with decades of rodent debris and rust flakes from the original galvanized ducts. Cleaning that system meant vacuuming the structural framing itself, then mastic-sealing the joist cavities so the Carrier blower could pull air through the filter instead of around it. The soot stopped. The system ran at proper static pressure. That’s not air duct cleaning in the normal sense. That’s cleaning the building. And it’s why San Francisco work costs what it costs and takes the time it takes.
Carrier Models & Products We Service in San Francisco
We work on the full Carrier residential furnace lineup common in San Francisco housing: the Carrier Infinity series gas furnaces, Performance series, Comfort series, and the older 58 series legacy furnaces still running in half the row houses we enter. For parts, we use OEM Carrier components when they’re available and priced sensibly. When a legacy 58 series part is obsolete or backordered, we source high-quality aftermarket equivalents that meet or exceed the original spec and tell you exactly what we’re installing. We keep common filter housings, blower wheel pullers, and duct sealing supplies on the truck, which means less downtime for a San Francisco homeowner who’s been breathing musty air for too long. If a Carrier furnace or air handler is corroded beyond safe cleaning, we will say so and give you a repair-versus-replace assessment on the spot. No cleaning sold over a replacement that’s actually needed.
Carrier Service Pricing in San Francisco
For Carrier duct cleaning in San Francisco, expect to budget along these lines:
- Small condo or flat (up to 8 vents): $450 – $650
- Typical row house or single-family home (8 to 14 vents): $600 – $950
- Larger Edwardian or Victorian with shared chases (14+ vents): $850 – $1,400
- Open floor joist return cleaning and sealing (gravity-furnace retrofits): add $300 – $700 depending on access
What drives the price in San Francisco is access. Crawlspace entries, roof-cavity duct runs, shared wall chases in attached buildings, and the need to coordinate with neighboring units all add labor time. Our written estimate includes the inspection, the cleaning method, and the exact price before work begins. That price does not move at the door. Call (361) 326-5060 for a free estimate and we’ll walk you through what your Carrier system actually needs.
Serving San Francisco, CA - Our Local Coverage Area
We’re based in the 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 – Carrier Air Duct Cleaning in San Francisco
Cleaning can remove the loose rust flakes from the duct interior and the supply plenum, but if the galvanized steel has corroded through or is shedding continuously, cleaning alone won’t stop it. We’ll show you the video, measure the duct wall, and give you a straight answer: clean it, seal it, or replace the section. Call (361) 326-5060 and we’ll tell you what your ducts actually need.
Sometimes, yes. In attached housing, duct chases often run through shared walls or across a neighbor’s ceiling cavity. If the return or supply path crosses a party line, we may need brief access to the adjoining unit, and we’ll coordinate that with you and the neighbor before any work begins. We’ve done enough San Francisco row house jobs to manage landlord-tenant access without turning it into a mess.
The marine layer keeps indoor humidity high, and in homes without whole-home dehumidification or modern filtration, that moisture condenses inside the Carrier air handler. The blower wheel and heat exchanger sit damp for weeks at a time, which encourages surface corrosion and biological growth. Our cleaning includes the blower compartment and coil, not just the ducts, because that’s where San Francisco’s damp air does its damage. We also offer our Dryer Vent Cleaning in San Francisco to address moisture-related buildup throughout your home’s ventilation system.
Yes. This is one of the most common jobs we do in the Sunset and Richmond, where the original gravity-furnace returns were never converted to sealed ductwork. We vacuum the joist cavity itself, remove rodent debris and rust flakes, then mastic-seal the cavity so the Carrier blower pulls return air through the filter instead of through the building framing. Call (361) 326-5060 and ask about our joist cavity work.
Expect more than dust. In a San Francisco home, we typically find salt-breeze corrosion on any exposed galvanized sections, dust caked on the blower wheel, and often biological growth in the coil area if the system lacks modern filtration. A first cleaning on an Infinity system in a fog-belt neighborhood usually takes a full half day, and you’ll see before-and-after video of your own ducts when we’re done.
Service Areas Near San Francisco
We serve San Francisco neighborhoods including the Richmond, Sunset, Mission, Bernal Heights, and the northeast corridor. For Carrier work outside the city, see our coverage for San Francisco service area, our Carrier service in Seattle, and our Carrier service in Nashville-Davidson. Each Hollis location is independently owned and operated under The Garrison Standard.
Book Your Carrier Service in San Francisco Today
We answer the phone with a live person, not a callback queue. Call (361) 326-5060 for a free estimate on Carrier air duct cleaning in San Francisco. We’ll give you a written price, a clear scope of work, and a 365-Day Done Right Promise behind every job. Clean ducts, straight answers – that’s the whole job.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving San Francisco and the Bay Area.