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 Duct Sealing Across Santa Monica
Duct sealing in Santa Monica typically costs $400 – $950 for a whole-home system, with most jobs completed in a single visit after a written estimate. Homes near the coast, especially in neighborhoods like Ocean Park and Sunset Park, often need corrosion inspection and hardware replacement before sealing can begin. Call Hollis Air Duct Cleaning at (361) 326-5060 for a free written estimate.
We’ve worked in Santa Monica long enough to know the difference between a dry-dust job inland and what the marine layer does to ductwork here. Dispatch and scheduling run through our Los Angeles office, but our crews serve Santa Monica directly. That means we understand why a 1920s bungalow off Main Street needs a different approach than a Wilshire corridor condo with a rooftop air handler. Salt air, coastal pollen, and that persistent dampness that rolls in off the Pacific aren’t abstract concepts for us. They’re what we account for on every Santa Monica job.
Why Hollis Air Duct Cleaning Is Santa Monica’s Preferred Duct Sealing Company
Hollis Air Duct Cleaning has been part of the Garrison Partners family since 2004, and our Duct Sealing in Santa Monica reputation rests on operational specifics, not slogans. Our technicians arrive inside the quoted window, price the job in writing before touching anything, and leave the site clean. That’s The Garrison Standard, and it applies to every Santa Monica home we enter.
Our 365-Day Done Right Promise covers every duct sealing job in writing. If the work fails within a year, we return and make it right at no charge, including a free second visit. No negotiation, no runaround. Background-checked, uniformed technicians mean you know who’s walking into your home before they arrive. And when you call (361) 326-5060, a live person answers the phone 24 hours a day, 7 days a week. No voicemail loops. No callback queues.
Duct Repair in Santa Monica
Duct Repair in Santa Monica often starts with discovering damage that inland crews rarely encounter. The combination of salt-laden coastal air and moisture from the marine layer corrodes metal components and embrittles flexible duct connectors, particularly in older homes near the beach. A typical duct repair in Santa Monica runs $250 – $650 depending on accessibility and the extent of corrosion damage.
Corroded Metal Boots and Registers
White, crusty salt corrosion on supply boots and register frames is common in Ocean Park and beach-adjacent blocks. Sealing over this corrosion without replacement is a short-term fix that fails when the metal crumbles. We inspect every boot with a camera before recommending sealant or replacement.
Brittle Flex Duct Connectors
Flexible duct connectors in coastal Santa Monica homes often harden and crack from salt-air exposure. Tape and mastic won’t hold on material that’s lost its elasticity. We replace embrittled connectors with new flex duct, then seal the joints properly with mastic for a lasting repair.
Air Duct Sealing in Santa Monica
Air Duct Sealing in Santa Monica must account for moisture and microbial growth that dry inland systems rarely face. The marine layer keeps humidity elevated for months, and open-window living draws that dampness deep into duct runs where it mixes with salt and organic material. A typical whole-home air duct sealing in Santa Monica runs $400 – $950, with multi-story homes or systems with extensive corrosion landing in the upper range.
Mastic Sealing for Coastal Conditions
We use duct sealing mastic, a thick, water-based compound that remains flexible after curing, unlike tape that can peel in humid conditions. Mastic fills gaps and joints permanently, even in the damp environment of a Santa Monica crawl space or attic. Our Duct Sealing team applies it after full surface prep, not as a quick cover-up.
Moisture and Microbial Inspection
Before sealing any Santa Monica system, we run a camera inspection to identify biological film or mold growth that sealing would trap inside. Sealing over microbial contamination locks in the source of musty odors and potential health issues. We remove it first, then seal.
Trusted Brands We Service in Santa Monica
Our equipment roster includes professional-grade tools from Nikro, Honeywell, and Aprilaire. Nikro negative-air machines maintain proper containment during duct sealing prep work. Honeywell and Aprilaire filtration components integrate with sealed systems to maintain pressure balance and air quality after we’ve left. We stock parts for common Santa Monica installations, including components for rooftop and closet air handlers found throughout the Pico and Wilshire corridors. That local inventory means faster turnaround and fewer return trips for Santa Monica homeowners.
Common Duct Sealing Problems We See in Santa Monica Homes
- Salt corrosion on metal components. In Ocean Park and along the beach-adjacent blocks, we routinely find white, crusty salt corrosion on metal duct boots and register frames. Sealing over this corrosion without replacement guarantees failure within months as the metal continues to degrade.
- Brittle flex duct from salt-air embrittlement. Flexible duct connectors in coastal neighborhoods lose elasticity and crumble when handled. Applying tape or mastic to compromised material wastes money. The connector needs replacement first.
- Trapped moisture and biological film. Santa Monica’s marine layer creates persistent dampness in duct runs. Skipping moisture and microbial inspection before sealing traps mold spores and bacteria inside, perpetuating musty odors and potential respiratory triggers.
- Improper sealing of multi-unit shared chases. Rent-controlled buildings in the Pico corridor often have decades of deferred maintenance in vertical duct chases. Sealing individual units without addressing the shared infrastructure leaves leaks and contamination pathways intact.
Pricing for Duct Sealing in Santa Monica, CA
Whole-home duct sealing in Santa Monica typically runs $400 – $950. Single-zone repairs or partial sealing start around $250. Several factors push jobs toward the higher end: multi-story homes with complex duct routing, extensive salt corrosion requiring boot or connector replacement, and systems in tight attic or crawl spaces that slow access. We provide one flat price per system, agreed in writing before any work starts. No per-vent pricing. No add-ons once the van is in your driveway. Estimates are free. Call (361) 326-5060 to schedule.
What you’re paying for is the full job done by the book: camera inspection, corrosion assessment, surface prep, proper mastic application, and pressure testing to verify seal integrity. We document before-and-after conditions with photos of your actual ducts, not stock images.
We Also Serve Cities Near Santa Monica
Our crews work throughout the Westside and South Bay, including Santa Monica neighbors in Marina del Rey, Culver City, Beverly Hills, and El Segundo. Each community has its own ductwork challenges, from Marina del Rey’s harbor moisture to El Segundo’s industrial particulate load. The same written pricing, background-checked technicians, and 365-Day Done Right Promise apply wherever we go.
Serving Santa Monica, CA - Our Local Coverage Area
We’re based in the Santa Monica 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 Duct Sealing in Santa Monica
The marine layer keeps Santa Monica ducts persistently damp, which means sealants must remain flexible after curing and surfaces must be inspected for biological growth before sealing. Inland LA ducts mainly collect dry dust; Santa Monica ducts develop sticky, salt-laden grime that requires different prep and often reveals corrosion that inland crews rarely see. Call (361) 326-5060 for an exact quote on your Santa Monica home.
No, not without addressing the corrosion first. Sealing over white, crusty salt corrosion on metal boots or register frames traps deteriorating metal beneath the sealant and guarantees failure when the corrosion crumbles. We replace corroded components, then seal the new joints with mastic. Estimates are free; call (361) 326-5060.
Beach-adjacent homes in Santa Monica draw more salt air and moisture through every opening, including duct leaks. Unsealed joints act as intake points for corrosive, damp air that accelerates hardware degradation and microbial growth. Proper sealing blocks this infiltration, protecting both the duct system and indoor air quality. For comprehensive protection, pair sealing with Santa Monica Dryer Vent Cleaning to remove built-up lint and salt residue. Call (361) 326-5060 to assess your coastal home’s ductwork.
Yes, our duct sealing procedures align with NADCA guidelines for assessment, cleaning, and restoration, including proper containment with negative-air machines, HEPA filtration during prep work, and verified seal integrity before sign-off. We use Rotobrush agitation tools and Nikro negative-air equipment to meet these standards on every Santa Monica job. Call (361) 326-5060 for specifics on our process.
Most Santa Monica homes benefit from duct inspection every 3 – 5 years, with sealing as needed when leaks are detected. Homes within a few blocks of the beach, or with chronic moisture issues, may need more frequent assessment due to accelerated salt corrosion. We evaluate each system individually rather than applying a blanket schedule. Call (361) 326-5060 to set up a free inspection.
In Ocean Park, our tech opened a 1940s bungalow’s original gravity furnace closet and found white, crusty salt corrosion on the metal supply boots in two bedrooms, plus a brittle flex connector that crumbled when touched. We performed a camera inspection, then used Rotobrush agitation tools under negative pressure with HEPA filtration to remove the sticky salt-and-moisture grime from the supply and return ducts. After replacing the corroded boot and flex connector, we sealed the remaining joints with mastic, restoring proper airflow and eliminating the musty coastal odor.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Santa Monica since 2004 as part of the Garrison Partners family.