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.
Fast, Reliable Air Duct Repair Across San Rafael
If your air ducts are leaking, crushed, or pulling attic air into your living space, you need a repair crew that understands San Rafael’s specific housing stock. Most air duct repair in San Rafael costs between $350 and $1,400 depending on whether we’re sealing a few failed seams or replacing a crushed return run. Our crews work in Gerstle Park, Terra Linda, Santa Venetia, Sun Valley, and every San Rafael neighborhood in between. Call (951) 527-6259 for a straight answer and a written price before any work begins.
Why Linden Air Duct San Francisco Is San Rafael’s Preferred Air Duct Repair Company
San Rafael homeowners call us because we show up the way we said we would. The technician’s name and photo are sent to you before the visit, and that same person shows a photo ID badge at your door. Every one of our techs is background-checked and identity-verified under the Threshold Standard, which has been how we’ve operated since 2004. Marcus Veale runs our team with a simple rule: if the repair is not right, we come back and make it right within 365 days, in writing, at no charge.
We know the difference between a Gerstle Park bungalow with 1920s galvanized ducting and a Terra Linda tract home with flex runs baked brittle by attic heat. That local knowledge means we diagnose the actual problem, not a generic one. San Rafael homeowners tell us the same thing after every job: the price matched the quote, the tech was respectful, and the repair actually held.
Our San Francisco Bay Area office dispatches crews to San Rafael daily. Scheduling is easy. A live person answers the phone whenever you call, day or night. No answering machine maze.
Styles & brands we work with
Air Duct Replacement in San Rafael
Air duct replacement in San Rafael is what we recommend when a section of ducting is too far gone to seal. We’re talking rust-through from years of crawl space moisture, flex duct crushed flat under attic debris, or metal runs so separated at the seams that they’re pulling more attic air than conditioned air. Replacement in San Rafael typically runs $600 to $2,200 depending on the length of the run, how accessible it is, and whether we’re pulling out original 1940s metal or failing flex from the 1990s.
Signs You Need Duct Replacement, Not Repair
If your far registers barely blow while near ones blast, something is wrong. Crushed flex runs and collapsed metal sections can’t be sealed back into shape. When our camera inspection shows a duct bottom rusted through in multiple spots, replacement is the honest answer. Patchwork on rusted ducting fails within a season or two.
What Replacement Involves
We remove the failed section, inspect the adjacent runs for damage, then install new duct sized to your system’s actual airflow requirements, not just whatever was there. Every replacement is sealed with mastic at the joints, not tape. The whole job gets a camera verification before we leave, and the repair is covered by our written 365-day guarantee. If it fails within a year, the second visit is free.
Ductwork Repair in San Rafael
Ductwork repair in San Rafael means sealing leaks, reconnecting separated runs, and replacing short sections before they become full replacements. Most San Rafael duct repair jobs fall between $350 and $900. A failed seam in a crawl space or attic, a disconnected boot at a register, or a flex run sagging off its hanger are all repairable in a single visit.
Sealing and Reconnection Work
Original metal ducts in pre-1970 San Rafael homes were often joined with tape that has since dried out and let go. We pull back the insulation, seal every seam with mastic, and re-insulate. The difference is immediate: rooms that used to stay stale finally get full pressure, and your furnace stops working overtime to heat your attic.
Repair vs. Replace: How We Decide
We always run a camera before recommending replacement. If the metal is intact but leaking at the seams, we repair. If it’s rusted through in multiple spots or crushed flat, replacement is cheaper long-term. Repairing ductwork that’s already failed structurally just guarantees another service call in six months. We’ll show you the camera footage and let you decide based on what you see.
Trusted Brands We Service in San Rafael
We work on all brands and ages of ducting across San Rafael, and we stock common replacement parts locally so most repairs happen in one visit. For flex duct repair and replacement, we use trade-trusted materials from Nikro and Rotobrush, the same professional-grade equipment we run for duct cleaning. For air quality concerns tied to moisture or wildfire smoke, we work with products from Abatement Technologies and Guardsman. You won’t get off-brand components from us just to shave a few dollars off the quote.
Common Air Duct Repair Problems We See in San Rafael Homes
- Failed taped seams in original metal ducts. Homes built before 1970 in neighborhoods like Gerstle Park and Sun Valley often have galvanized steel ducts joined with tape that’s now brittle and separated. Conditioned air pours into the attic or crawl space instead of your rooms.
- Crushed or sagging flex ducts in 1980s and 1990s tract homes. In Terra Linda and Santa Venetia, we regularly find flex runs that have collapsed under their own weight in hot attics. Airflow to far bedrooms drops to almost nothing while the system works harder and your bill climbs.
- Rust-through in Santa Venetia crawl spaces. Homes on former marshland deal with steady crawl space humidity that wicks into metal ducts. We’ve replaced duct bottoms rusted clean through, a repair unique to the wetter, low-lying pockets of San Rafael.
- Disconnected register boots from settling. Hillside homes across San Rafael shift over time, and that movement pulls ducts loose at the register. You end up heating the wall cavity instead of the room. Reconnecting and sealing those boots is usually a quick, affordable fix.
See the difference
Before
After
Before
After
Before
AfterPricing for Air Duct Repair in San Rafael, CA
Duct sealing and reconnection work in San Rafael generally runs $350 to $900. Short section replacement, like a crushed flex run or a rusted crawl space duct, costs $600 to $1,400. Full-length replacement involving inaccessible hillside crawl spaces or multiple runs can reach $2,200 or more. The biggest cost factors are run length, accessibility, and whether we’re working in a tight crawl space or a steep attic.
You’ll get a written price before any work starts, every single time. That price includes the repair, the sealing, and the camera verification before we leave. Call (951) 527-6259 for a free estimate. We’ll give you numbers you can actually plan around, not a teaser rate that changes when the van pulls up.
We Also Serve Cities Near San Rafael
Our crew covers the full 94901, 94903, and 94904 area and regularly handles Air Duct Repair in Richmond, San Pablo, Novato, and Berkeley. If you’re in a neighboring Marin or East Bay city, see our Air Duct Repair in San Rafael page for local pricing context, then call us for a quote specific to your address.
Serving San Rafael, CA - Our Local Coverage Area
We’re based in the San Rafael 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 Repair in San Rafael
San Rafael’s marine layer brings consistent overnight moisture, especially in hillside neighborhoods like Gerstle Park and the western slopes. That moisture settles on exposed metal ducts and accelerates rust at any seam where tape has already failed. We see more rust-through at duct bottoms in the fog belt than in dryer inland parts of Marin. Sealing work here needs to happen before the wet season, ideally in late summer or early fall, so mastic cures properly. Call (951) 527-6259 for a seasonal assessment.
Most older San Rafael homes can be repaired sectionally. We rarely recommend whole-home duct replacement unless the entire system is original 1920s galvanized steel that’s separated at nearly every seam. Sectional repair works well for failed joints, crushed returns, and rusted crawl space runs. We’ll camera the whole system and show you exactly what needs work before we quote anything.
Santa Venetia homes sit on former marshland with much higher crawl space humidity, so ducts there need materials that resist constant moisture. We use stainless steel fasteners and moisture-rated sealing products in Santa Venetia where standard galvanized steel would rust through again within a few years. Terra Linda homes, on drier hillside soil, can use standard galvanized replacement runs without the same corrosion risk. The material difference matters.
Yes, in many San Rafael homes the musty smell comes from leaks pulling damp crawl space air into the duct system, not from the ducts themselves being dirty. If cleaning didn’t eliminate the odor, there’s usually a rusted-out section or disconnected return pulling unfiltered air from below the house. Sealing the leaks and replacing rusted sections stops the source, and the smell goes with it. Call (951) 527-6259 for a camera inspection.
Expect us to spend time in your crawl space or attic before we touch anything. In hillside homes, that often means working on a slope with limited clearance, which is why we carry drop lights and crawl-specific tools. You’ll get a camera report showing what we found, a written quote, and then the repair itself, usually in one visit for sealing work or two for significant replacement. The tech’s name and photo are sent before we arrive, and the photo ID badge is shown at the door, every time.
A Repair We Still Talk About
In Gerstle Park, our crew pulled back a crushed return duct in a 1920s bungalow and found the original galvanized steel separated at three seams, pulling attic air into the system. The homeowner had lived with weak airflow for years, assuming the old house just had bad circulation. We sealed the runs with mastic, replaced the crushed section, and verified airflow with a camera inspection. The blower motor stopped laboring and the bedroom registers finally delivered full pressure. That’s exactly the kind of repair older San Rafael homes need most: not a full replacement, just honest sealing work done right.
Call Linden Air Duct San Francisco for Air Duct Repair in San Rafael
You’ll know who’s coming to your door before they arrive. You’ll get a written price before the work begins. And if the repair doesn’t hold, we come back free for a full year. That’s how Marcus Veale runs every San Rafael job, no exceptions. Call (951) 527-6259 for a free estimate, or to ask us anything about your ducts. A live person answers, 24/7.
Written by Marcus Veale, Owner at Linden Air Duct San Francisco, serving San Rafael and the Bay Area since 2004.