Fast, Reliable Duct Repair & Sealing Across Tujunga
We’re Bellows Air Duct & Vent Co., and we’ve been driving out to Tujunga since 1984. Most calls from the 91042 and 91043 ZIP codes reach us within 45 minutes, and we schedule same-day or next-day appointments because we know a duct system leaking conditioned air into your attic isn’t something you wait on. Tujunga’s canyon geography creates repair needs you won’t find in flatland LA neighborhoods. The Big Tujunga Canyon funnels wildfire smoke, ash, and fine particulate straight into residential HVAC systems, and that contamination changes how we approach every repair. If your ducts are whistling, sagging, or pushing dust through the registers, call us at (844) 685-6342 for a free estimate.
Why Bellows Air Duct & Vent Co. Is Tujunga’s Preferred Duct Repair & Sealing Company
We’ve built our reputation in Tujunga on showing up when we say and doing the job without callbacks. Our Duct Repair & Sealing in Tujunga customers live in the same homes for decades, and they call us back because our 90-Day Done Right Promise means exactly that: if it’s not right, we return at no charge with no paperwork to argue over.
Our technicians are background-checked, uniformed, and trained on the specific failure patterns Tujunga’s climate produces. They know a sagging flex duct on a hillside home near Angeles National Forest boundary isn’t just aging hardware - it’s often ash-weight loading from fire season afterwash. We answer calls with a live person 24 hours a day, not a voicemail system. Most Tujunga repairs are completed in a single visit because we carry Rotobrush and Nikro equipment plus common flex duct and mastic inventory on every truck.
Our no-hassle upfront pricing means the number we quote on the phone is the number on the invoice. No bait coupons, no price changes when we arrive.
Our Duct Repair & Sealing Services in Tujunga
Duct Sealing
Tujunga’s canyon wind funnel doesn’t just move air - it moves ash-laden air that degrades sealant faster than in protected flatland neighborhoods. We seal duct joints with professional-grade mastic, not tape that peels. For homes in upper Tujunga backing onto forest land, we inspect every joint for acidic smoke residue that breaks down older seals. A typical duct sealing job in Tujunga runs $350-$650 for a single system, depending on access and contamination level.
Flex Duct Repair
Tujunga’s housing stock is dominated by mid-century ranch homes and bungalows, many with flex duct systems installed during 1970s-80s retrofits. These systems sag from ash weight and canyon wind pressure, creating low spots that trap debris and restrict airflow. We replace compromised sections with properly supported new flex, sized to match your existing trunk line. A single flex duct repair in Tujunga typically costs $180-$340; multiple runs or full system replacement runs $1,200-$2,400.
Metal Duct Repair
Original metal ductwork from 1950s Tujunga homes rusts at seams from prolonged moisture exposure during Santa Ana ash fallout. We cut out corroded sections, fabricate replacement pieces, and seal with mastic for a permanent repair. Metal duct repair in Tujunga generally ranges from $280-$550 per section, with full trunk line restoration reaching $1,800-$3,200 for larger systems.
Duct Insulation
After fire ash events, insulation inside duct plenums becomes contaminated with fine particulate that standard cleaning can’t fully remove. We strip and replace insulation on supply and return trunks, using materials rated for Tujunga’s temperature swings. Duct insulation replacement runs $450-$890 for typical residential systems in the 91042 area.
Mastic Sealant Application
Mastic is our standard for Tujunga because it survives where tape fails. We brush-apply mastic to all joints and seams, creating a flexible, permanent seal that withstands ash-driven air pressure. This is included in our standard duct sealing service but can be specified as a standalone treatment for systems in good structural condition.
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 Tujunga
We specify Abatement Technologies HEPA equipment and Rotobrush mechanical cleaning systems for Tujunga’s heavy-contamination environment. Our trucks carry Nikro vacuum systems and Guardsman-rated sealants because these are the brands serious HVAC contractors use when the job isn’t cosmetic. We stock local parts for fast turnaround on Tujunga repairs, and our technicians are trained on legacy systems common to the neighborhood’s 1940s-1960s housing stock. You won’t wait two weeks for a specialty fitting.
Common Duct Repair & Sealing Problems We See in Tujunga Homes
- Ash-weighted flex duct sagging. On hillside homes near Big Tujunga Canyon Road, we regularly find 1970s flex duct systems with multiple sagging sections where ash accumulation has pulled the duct below the support strap. These low spots trap debris and cut airflow by 30% or more.
- Mastic seal degradation from smoke residue. The acidic byproducts of wildfire smoke break down mastic and tape seals faster than normal aging. Joints that held for a decade in Burbank may fail in five years in Tujunga.
- Rust-through on 1950s metal duct seams. Original galvanized steel ductwork in Tujunga’s older bungalows corrodes at the longitudinal seam where Santa Ana-driven ash and moisture collect. We catch this on camera inspection before it becomes a full collapse.
- Return plenum contamination after fire events. Homes on upper streets abutting the national forest boundary consistently show visible gray-black ash deposits in return plenums after regional fire events. Cleaning alone doesn’t solve this; the plenum needs resealing and reinsulating to prevent recontamination.
Pricing for Duct Repair & Sealing in Tujunga, CA
We believe in one honest price, shown before we start. Here’s what duct repair and sealing costs in Tujunga’s market:
| Service | Typical Range in Tujunga |
|---|---|
| Single duct seal / small leak repair | $180 - $280 |
| Full system duct sealing with mastic | $350 - $650 |
| Flex duct repair (per run) | $180 - $340 |
| Metal duct section repair | $280 - $550 |
| Duct insulation replacement | $450 - $890 |
| Full flex duct system replacement | $1,200 - $2,400 |
| Major metal trunk restoration | $1,800 - $3,200 |
Costs run slightly higher in Tujunga than flatland LA neighborhoods because canyon-access homes often require additional containment and HEPA protection during repair. We disclose all pricing upfront before lifting a tool. Ask about our $50 Off Any Repair Over $250 and permanent 5% Senior and Veteran discount. Estimates are free - call (844) 685-6342.
We Also Serve Cities Near Tujunga
Our Duct Repair & Sealing team covers Sunland, La Crescenta-Montrose, Shadow Hills, and Burbank from our Los Angeles base. Each community gets the same camera-verified service and 90-Day Done Right Promise, though Tujunga’s canyon-funnel contamination pattern remains unique to this geography.
Serving Tujunga, CA - Our Local Coverage Area
We’re based in the Tujunga 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 Tujunga
The deposits are wildfire ash particulate that the Big Tujunga Canyon wind funnel drives deep into your HVAC intake. Standard cleaning removes surface contamination, but ash embeds in porous duct insulation and mastic seams, then releases during the next Santa Ana event. We address this by replacing contaminated insulation and resealing with fresh mastic - call (844) 685-6342 for an inspection.
Most 1970s flex duct in Tujunga has reached end of service life, especially if it’s sagging from ash loading or showing tears at support points. Repair works for isolated damage in otherwise sound runs; full replacement is the better value when multiple sections are compromised. We’ll show you on camera and give you both options with exact pricing.
Repairing rusted seams and resealing with mastic eliminates the odor source if smoke residue is trapped in corroded pockets. However, if insulation is saturated, replacement is necessary for full odor removal. We inspect with a camera to determine which applies to your system.
The canyon accelerates Santa Ana winds, creating positive pressure on exterior HVAC intakes that stresses internal seals. Ash-laden air is also more abrasive than standard dust. We use heavier mastic application and reinforced joint treatment for Tujunga homes, particularly those above 2,000 feet elevation near the forest boundary.
Replace it. Ash particulate is sub-micron and binds to fiberglass insulation; cleaning cannot restore it. We strip and replace insulation, then seal the plenum to prevent recontamination. This is standard protocol for upper Tujunga homes after any major San Gabriel fire event. Call (844) 685-6342 for a free assessment - estimates take about 30 minutes.
Written by Ray Castillo, Owner at Bellows Air Duct & Vent Co., serving Tujunga since 1984.