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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AfterFast, Reliable Air Duct Repair Across San Rafael
If your heating and cooling system is pushing dust, musty air, or uneven temperatures through your San Rafael home, the problem is often in the ductwork itself. Air duct repair in San Rafael typically runs $350 – $1,500 depending on whether we’re sealing leaks, reconnecting collapsed runs, or replacing damaged sections. Most jobs are completed in a single visit. Call Linden Air Duct Cleaning at (980) 447-2498 and you’ll get a written price before any work begins.
We know San Rafael’s neighborhoods because we work in them every week: Terra Linda, Gerstle Park, Dominican, Lucas Valley, and the flats near downtown. Each has its own housing stock and its own duct problems. A 1962 ranch in Terra Linda has very different needs than a 1920s Craftsman on a hill above Miracle Mile. Knowing which is which matters when we diagnose your system.
Why Linden Air Duct Cleaning Is San Rafael’s Preferred Air Duct Repair Company
Linden Air Duct Cleaning has been serving homeowners as part of the Threshold Group family since 2004, and our San Rafael customers keep us on speed dial because we show up the way we say we will. The tech’s name and photo are sent to you before the visit. At the door, they present a photo ID badge and arrive in a clean, marked uniform. That’s the Threshold Standard, and it’s not optional.
San Rafael homeowners regularly tell us the same things: they called because our pricing is in writing before work starts, they stayed because the repair was done right, and they referred us because the person in their home was someone they recognized from the photo we sent. Every repair is covered by a written guarantee with a free second visit if it fails. That’s 365 days, in writing, every single time.
Our Air Duct Repair team stocks common replacement parts used in older Marin County systems, so we don’t have to schedule a second trip just to finish a job we should have completed the first time. The phone is answered by a live person 24/7. No voicemail loops, no automated menus. You reach a person who knows San Rafael and can schedule your visit.
HVAC Duct Installation in San Rafael
HVAC Duct Installation in San Rafael usually means one of two situations: the system is new and needs ducting designed for the home’s layout, or the existing ducts are so compromised that patching them would be throwing good money after bad. In Terra Linda’s planned ranch tracts from the 1950s and 1960s, we regularly find original galvanized trunk lines that have been crushed, disconnected, or corroded to the point where replacement is the only sensible option. A full HVAC duct installation for an average San Rafael ranch home typically runs $3,500 – $7,500 depending on square footage and duct length.
New Systems and Retrofit Work
When a San Rafael homeowner replaces a furnace or heat pump, the ductwork often needs to be resized or reconfigured. We install rigid galvanized and properly sealed flex duct, sized to the system’s airflow requirements, not whatever was left in the attic from 1964. This matters most in older San Rafael homes where forced-air systems were retrofitted into cavities never designed for them.
When Repair Becomes Replacement
Some systems are beyond saving. If a camera inspection shows multiple crushed runs, severe rust, or duct walls lined with decades of particulate buildup that cleaning can’t address, we’ll tell you plainly. We’d rather show you the footage and replace what needs replacing than sell you a repair that won’t hold.
Air Duct Replacement in San Rafael
Air Duct Replacement in San Rafael is the right call when the existing system is pulling air from the wrong places, which is more common here than most homeowners realize. A typical partial replacement, swapping out a failed supply run or a collapsed return, runs $800 – $2,200. Full-system replacement starts around $3,500. The price is written down before we start, and it doesn’t change halfway through the job because we discovered the attic was worse than expected. We inspect first, then quote, then work.
Replacing Attic Runs in Older Homes
In San Rafael homes where ducts run through unconditioned attic space, the materials degrade faster. Heat cycles in summer, damp fog in winter, and the occasional rodent run through the insulation. When we replace, we seal every joint with mastic and inspect the entire run before we call it done.
Bringing a System Back to Spec
Replacement often includes correcting what the original installer got wrong. Improperly supported flex duct sags and separates. Joints taped with aged duct tape fail. We replace with properly strapped, sealed ducting and verify static pressure at the air handler before we leave. The goal is a system that moves the right air to the right rooms.
Trusted Brands We Service in San Rafael
San Rafael homeowners ask about the equipment we bring into their homes, and we’re happy to answer. We use professional-grade duct cleaning and repair tools from Rotobrush and Nikro, the same equipment trusted for negative-pressure extraction and HEPA-filtered work in hospitals and schools. When repairs involve air quality, we work with products from Aprilaire and Abatement Technologies. We don’t use consumer-grade vacuums or off-brand filters. And because we stock common replacement parts for San Rafael’s older systems, most repair jobs are finished in one visit.
Common Air Duct Repair Problems We See in San Rafael Homes
- Crushed attic duct runs: The 1950s and 1960s ranch homes in Terra Linda often have galvanized trunk lines running through unconditioned attics. Decades of heat cycling causes the metal to expand and contract, and we frequently find runs that have been partially crushed or completely disconnected. The house has been pulling attic air, insulation fibers, and rodent dander directly into living spaces.
- Condensation-driven mold growth: San Rafael’s valley geography traps marine fog from San Pablo Bay in the winter and holds 95°F+ heat in the summer. That swing creates condensation inside duct runs, especially in the cooler interior sections. Moisture inside ducts feeds mold and dust-mite growth that a fogging “sanitizer” will only mask, not remove.
- Post-wildfire particulate infiltration: During the major North Bay fire events of 2017, 2019, and 2020, San Rafael’s valley trapped smoke in ways coastal and South Bay cities did not experience. Fine PM2.5 and ash worked into residential duct systems and stayed there. A surface wipe or filter change doesn’t reach particulates deposited inside the duct walls. This is source-removal territory.
- Disconnected flex runs in retrofitted homes: Older San Rafael homes in Gerstle Park and Dominican often had forced-air systems retrofit into spaces never designed for them. Flex duct crammed through narrow cavities pulls apart at the joints over time. The result is air escaping into crawl spaces and attic bays instead of reaching the bedroom at the end of the hall.
Pricing for Air Duct Repair in San Rafael, CA
Here’s what San Rafael homeowners can expect to pay for air duct repair. Sealing leaks and reconnecting loose joints runs $350 – $800. Replacing a collapsed or disconnected section of flex duct typically costs $600 – $1,200 per run, depending on access from the attic or crawl space. Full-system replacement in a 1,200 to 1,800 square foot San Rafael ranch home generally falls between $3,500 and $7,500. The price you’re quoted is the price you pay. No per-vent add-ons, no surprise invoices at the end. Call (980) 447-2498 and we’ll send someone who can give you an exact quote after a proper inspection. Estimates are free.
We Also Serve Cities Near San Rafael
If you’re in Larkspur, Kentfield, Corte Madera, or San Anselmo, you’re within our regular service area. San Rafael is our home base for Marin County, but our techs are on the road across the county most days. The same Threshold Standard applies everywhere we go: verification, written pricing, and a real person at the door.
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 sits in a valley ringed by fire-prone chaparral hillsides, and the same geography that traps marine fog from San Pablo Bay also traps wildfire smoke. During the 2017, 2019, and 2020 fire seasons, PM2.5 and fine ash were pulled into residential HVAC systems and deposited directly into ductwork. Add the condensation cycles from winter fog and summer heat, and San Rafael ducts degrade faster and collect more particulates than systems in coastal cities with steady ocean air. The fix is real source removal and proper sealing, not surface cleaning.
A genuine cleaning removes the material. We use negative-pressure extraction with Rotobrush and Nikro equipment to pull debris, dust, and contaminants out of the duct system. A fogging sanitizer sprays a chemical mist into the ducts and advertises it as cleaning. It doesn’t remove built-up debris; it masks odor for a few weeks. If a company leads with fogging as a substitute for cleaning, ask yourself why they don’t want to remove the material. For a real evaluation of what’s actually in your San Rafael ducts, call (980) 447-2498.
Common signs include rooms that never reach the set temperature, visible dust streaks around registers, a persistent musty odor, and utility bills that keep rising without a change in usage. If you can see a section of flex duct in your attic, check whether it’s sagging, crushed, or pulled away from its connection. Most of our Terra Linda customers can’t safely access their attic runs, so we run a camera inspection and show you the footage before any work begins. Estimates are free and carry no obligation.
If smoke was visible or smelled indoors for more than a day, filter changes are not enough. Smoke particulates move through the duct system and settle on interior surfaces. Once the smoke clears, every time the blower cycles, it stirs that residue and redistributes it through the house. In San Rafael after the 2020 fires, we found ash deposits inside supply ducts on homes that had never had their ducts cleaned. Source removal with HEPA filtration is the standard response. Call (980) 447-2498 for a straight answer on what your system actually needs.
We run Rotobrush and Nikro cleaning systems, both designed for negative-pressure extraction with HEPA filtration. For air-quality products and filtration, we work with Aprilaire and Abatement Technologies. The replacement ducting we install is the same specification we’d put in our own homes, sealed with mastic at every joint and strapped to code. No off-brand parts, no consumer-grade equipment.
If you’re seeing dust streaks, smelling something stale, or just wondering whether the air coming out of your registers is as clean as it should be, call Linden Air Duct Cleaning at (980) 447-2498. We’ll send a verified technician you’ll know by name and photo before they arrive. The price is in writing before the work starts. And if the repair doesn’t hold, we come back at no charge. That’s the job, done right.
Written by Marcus Veale, Owner at Linden Air Duct Cleaning, serving San Rafael since 2004.