Fast, Reliable Duct Repair & Sealing Across Hollywood
Duct repair and sealing in Hollywood typically costs $280–$650 for most residential jobs, with mastic re-sealing running $180–$340 and metal duct repairs ranging $320–$580 depending on accessibility. We’re usually on-site in Hollywood within 90 minutes of your call, and most sealing work finishes same-day. If you’re smelling smoke inside your apartment every autumn or watching your energy bills climb in a vintage building, your ductwork is likely leaking — and in Hollywood’s older housing stock, that’s a problem that only gets worse.
We’ve worked on duct systems throughout the 90028 corridor for fourteen years. Richard Anderson personally handles every job, from the Spanish Colonial Revival buildings along Beachwood to the Art Deco apartments off Vine Street. We know how Hollywood’s flatland topography funnels wildfire smoke and Santa Ana dust directly into HVAC intakes, and we know how the retrofit ductwork in 1920s–1950s buildings fails under those conditions. Call (833) 958-5022 for a free estimate — we’ll inspect your system and show you exactly where the leaks are.
Why Landmark Air Duct Cleaning Service California Is Hollywood’s Preferred Duct Repair & Sealing Company
Our Duct Repair & Sealing team has built a 4.9-star reputation across 364+ verified reviews by showing up personally — Richard Anderson leads every job, not a subcontractor you’ve never met. Hollywood customers specifically mention our familiarity with older buildings: we don’t waste time figuring out non-standard duct geometry or hunting down parts for vintage metal runs.
Response time to Hollywood averages under 90 minutes from call to arrival. We carry Rotobrush and Nikro equipment plus mastic sealant and insulation stock on every truck, so we’re not making multiple trips while your system stays open. That matters in 90028, where a compromised duct run can pull ash and particulate straight into living spaces during Santa Ana season.
Richard’s fourteen years of focused air-duct specialization means we’ve seen the specific failure patterns that repeat in Hollywood’s housing stock — cracked mastic from 1960s retrofits, unsupported flex duct from unpermitted apartment upgrades, compacted post-fire ash layers that standard cleaning won’t touch. We name the problem and fix it. No upselling, no vague diagnoses.
Our Duct Repair & Sealing Services in Hollywood
Mastic Sealant Application & Re-Sealing
Original mastic sealant from 1940s–1960s HVAC retrofits cracks and flakes under Hollywood’s seasonal Santa Ana heat cycles, creating direct pathways for wildfire ash infiltration. We remove failed mastic with Abatement Technologies HEPA-controlled methods, then apply fresh, fiber-reinforced sealant rated for the temperature swings these attic and wall cavities experience. A typical mastic re-sealing job in Hollywood runs $180–$340 for a standard apartment system, with larger multi-unit buildings scaling from there.
Metal Duct Repair
Rusted or separated metal ductwork is common in Hollywood’s 1920s–1940s buildings, where galvanized steel runs have spent decades in unconditioned attics. We patch small rust-throughs with matching gauge metal and sealant, or section-replace damaged runs when corrosion has compromised structural integrity. Metal duct repair in Hollywood typically costs $320–$580 depending on attic access and whether we’re working around original lath-and-plaster construction.
Flex Duct Repair & Replacement
Flex duct runs added during unpermitted apartment upgrades often lack proper support and develop kinks, tears, or complete separations within ten years. In Hollywood’s high-turnover rental market, these problems frequently go unreported until airflow drops dramatically or tenants smell attic air. We repair supported, accessible flex sections when possible; replace unsupported or damaged runs with properly hung new material when repair won’t last. Flex work in Hollywood generally runs $240–$420.
Duct Insulation
Post-fire ash layers settle in hard-to-reach attic ducts, and typical cleaning alone fails to remove compacted residue that embeds in old fiberglass insulation. We strip contaminated insulation, HEPA-clean the duct surface, then install new wrap rated for Hollywood’s mild-but-variable climate. Proper insulation also prevents condensation in dormant systems — a real problem when HVAC sits idle for weeks between Santa Ana heat waves. Duct insulation in Hollywood ranges $380–$720 for typical residential scope.
What happens when you call
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A real person answersNo phone trees — you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Hollywood
We stock Honeywell and Aprilaire components for common Hollywood HVAC retrofits, plus Abatement Technologies HEPA filtration for post-fire remediation work. Nikro negative-air systems handle the extraction side. Because we carry these parts on our trucks, most Hollywood jobs don’t wait for supply runs — critical when you’re dealing with active ash infiltration or a compromised system during fire season. Richard selects components based on what your specific building needs, not what’s cheapest to install.
Common Duct Repair & Sealing Problems We See in Hollywood Homes
- Cracked vintage mastic: The original sealant from mid-century HVAC retrofits hardens and fractures under repeated Santa Ana heat cycling, creating gaps that pull wildfire particulate directly into supply air. We find this in nearly every pre-1960 Hollywood building we inspect.
- Unsupported flex duct failures: Unpermitted apartment upgrades throughout 90028 used flex duct without proper hangers or protection from attic debris. Kinks and tears develop quickly, especially where ducts cross original roof structures with sharp edges.
- Compacted post-fire ash: Downslope airflow from Hollywood Hills and Griffith Park fires deposits fine ash in attic duct runs that typical cleaning can’t fully extract. The residue re-aerosolizes when systems restart, causing recurring smoke odor every autumn.
- Rust corrosion in original metal runs: Galvanized steel ductwork in 1920s–1940s buildings corrodes from decades of condensation in unconditioned spaces, particularly where roof leaks or poor ventilation have introduced moisture.
Pricing for Duct Repair & Sealing in Hollywood, CA
Honest numbers for Hollywood’s market: mastic sealant work runs $180–$340, metal duct repair $320–$580, flex duct repair or replacement $240–$420, and full duct insulation $380–$720. Multi-unit buildings or systems with difficult attic access (common in Spanish Colonial Revival structures with low roof pitches) trend toward the higher end. What drives cost: accessibility, extent of contamination, and whether we’re working around original architectural features that can’t be disturbed.
We don’t quote over the phone without seeing your system — Hollywood’s retrofit ductwork varies too widely for guesswork. Our estimates are free, detailed, and delivered on-site. Call (833) 958-5022 to schedule.
We Also Serve Cities Near Hollywood
We regularly travel from our Bell base to Universal City, West Hollywood, Koreatown, and Echo Park for duct repair and sealing work. Response times to these neighborhoods are comparable to Hollywood — typically under 90 minutes — and we bring the same equipment stock and owner-led service to every job.
Serving Hollywood, CA — Our Local Coverage Area
We’re based in the Hollywood 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 — Duct Repair & Sealing in Hollywood
Yes — buildings in 90028 face unique ash infiltration because downslope winds channel wildfire particulate directly into HVAC intakes. Standard duct sealing in other cities doesn’t account for this concentrated exposure. We use heavier-grade mastic and more thorough joint coverage than typical suburban jobs, specifically to block the fine ash that penetrates ordinary seals. Call (833) 958-5022 for a free inspection — we’ll show you where your system is vulnerable.
We can repair localized rust-throughs and separations in most vintage metal ductwork, matching original gauge and geometry. Severe corrosion requiring full section replacement is less common but possible — we’ll tell you honestly which applies after inspection. Richard Anderson has handled metal duct repairs in multiple Vine Street buildings and knows the access constraints these structures present. Call (833) 958-5022 for an exact assessment.
Fiber-reinforced foil-faced insulation rated for the temperature swings of unconditioned attics works best in 90028’s retrofit applications, particularly where post-fire ash contamination has compromised original fiberglass. We specify material that won’t degrade under Santa Ana heat spikes and that seals properly against existing metal runs. Typical installation runs $380–$720. Call (833) 958-5022 for a quote tailored to your attic configuration.
Recurring autumn smoke odor almost always indicates compromised duct seals allowing wildfire ash to re-aerosolize from inside your ductwork. We see this pattern predictably in 90028 after Hills or Griffith Park fire events. Cleaning alone won’t solve it — the compacted residue requires systematic sealing and often insulation replacement to fully eliminate. Call (833) 958-5022 before next fire season.
Supported flex duct in accessible locations can often be repaired if damage is limited to tears or minor kinks. Unsupported runs, duct with multiple failure points, or flex that has been damaged by rodent activity should be replaced with properly hung new material — repair would be temporary. Richard will show you the specific condition of your runs and recommend accordingly. Call (833) 958-5022 for a free evaluation.
Ready to fix your duct leaks? Call (833) 958-5022 now for a free estimate in Hollywood. Richard Anderson personally inspects every system, identifies exactly where your ducts are failing, and gives you straight numbers — no pressure, no upselling, just fourteen years of focused expertise applied to your building.
Written by Richard Anderson, Owner at Landmark Air Duct Cleaning Service California, serving Hollywood since 2010.