Fast, Reliable Duct Repair & Sealing Across East Los Angeles
Leaky or damaged ductwork in East Los Angeles typically costs $280-$650 to repair or seal, and most jobs are completed in a single visit. If your vents are blowing weak, your energy bills have climbed, or you’re noticing a dark gray-black soot around your registers, your ducts are likely pulling in unfiltered air from your attic, crawlspace, or the diesel-heavy air outside.
We’ve been working in East Los Angeles since 1984. Our technicians know the post-WWII stucco bungalows along Whittier Boulevard, the compact homes near Atlantic Avenue, and the aging HVAC retrofits common throughout 90022. We answer calls live, 24 hours a day. Call (844) 685-6342 for a free estimate.
Why Bellows Air Duct & Vent Co. Is East Los Angeles’s Preferred Duct Repair & Sealing Company
East Los Angeles homeowners call us because we show up when we say we will and we don’t change the price at the door. Over 42 years, we’ve built our reputation on one thing: the job is done right, and if it isn’t, we come back and make it right under our 90-Day Done Right Promise. No paperwork, no arguing.
Our technicians are background-checked, uniformed, and trained to handle the specific conditions of 90022 housing stock, including pre-1978 homes with original asbestos mastic tape. Every repair starts with a camera inspection of your ductwork so you see the problem before we lift a tool. Most East Los Angeles repairs are completed same-day.
We don’t use bait coupons or scare tactics. The price we quote on the phone is the price on the invoice. That’s been our practice since Ray Castillo founded Bellows in 1984, and it’s not changing.
Our Duct Repair & Sealing Services in East Los Angeles
Duct Sealing
Leaky ducts in East Los Angeles pull in more than lost air. They draw diesel particulate from the SR-60 and I-710 corridor, wildfire smoke during Santa Ana events, and attic dust contaminated with decades of accumulated pollution. Our Duct Repair & Sealing team uses blower-door testing and smoke pencils to locate every leak, then seals them with professional-grade mastic and metal-backed tape. A typical duct sealing job for a 1,500 square foot home in 90022 runs $450-$850, depending on accessibility and the condition of existing joints.
Flex Duct Repair
The flex duct installed during 1980s and 1990s HVAC retrofits in East Los Angeles bungalows is now reaching end of life. We’ve replaced collapsed flex runs in homes from City Terrace to Belvedere, where sagging ducts have torn at joints or detached entirely from registers. Our flex duct repair includes proper support strapping, sealed connections, and insulation matching your existing R-value. Most flex repairs run $180-$420 per run.
Metal Duct Repair
Original galvanized metal ductwork in pre-1960 East Los Angeles homes corrodes at joints where decades of trapped moisture meet diesel particulate residue. We cut out rusted sections, fabricate replacement pieces, and seal with mastic for a permanent fix. Metal duct repair in 90022 typically costs $320-$680, with hazmat protocols added if asbestos tape is present.
Duct Insulation & Mastic Sealant
Uninsulated or poorly insulated ducts in East Los Angeles attics lose conditioned air rapidly during summer heat waves and winter inversions. We apply water-based mastic sealant at all joints, then wrap with formaldehyde-free insulation where needed. Mastic sealing alone runs $280-$550 for most 90022 homes. Full insulation replacement adds $400-$900 depending on linear footage.
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 East Los Angeles
We stock parts and materials from Nikro, Honeywell, and Aprilaire, the same brands serious HVAC contractors specify for commercial installations. For East Los Angeles customers, this means no waiting on special orders for sealants, registers, or flex duct. Our vans carry Rotobrush cleaning systems and Nikro HEPA vacuums, so we can move from repair to sealing to final camera verification without leaving your driveway. Most jobs finish in four to six hours.
Common Duct Repair & Sealing Problems We See in East Los Angeles Homes
- Corroded metal joints from diesel particulate and moisture. The combination of East Los Angeles’s trapped smog inversions and freight-corridor pollution creates acidic condensation inside metal ducts. We see rust-through at seams in homes as young as 30 years old, where inland communities might see 50 years of service.
- Collapsed flex duct dumping attic air into living spaces. Original flex runs in post-WWII bungalows near Olympic Boulevard and Atlantic Avenue sag between joists, tear at connections, or pull completely free of boots. Homeowners feel weak airflow and notice dust that doesn’t match their indoor environment.
- Flaking asbestos mastic tape on pre-1978 duct seams. The white or gray tape used to seal metal duct joints before federal bans dries, cracks, and releases fibers into the airstream. Our technicians are trained to identify this material and follow hazmat-aware protocols before any sealing work begins.
- Return duct leaks pulling in unfiltered outdoor air. In East Los Angeles’s 90022, leaky return plenums bypass your filter entirely, drawing in PM2.5, ozone, and wildfire particulate at levels that overload standard HVAC filtration. Sealing these leaks is often the single most effective air quality improvement a homeowner can make.
Pricing for Duct Repair & Sealing in East Los Angeles, CA
We’re upfront about costs because nobody likes a surprise on the invoice.
| Service | Typical Range in 90022 |
|---|---|
| Basic duct sealing (mastic, tape, smoke-test verification) | $280-$550 |
| Comprehensive duct sealing with blower-door testing | $450-$850 |
| Flex duct repair/replacement (per run) | $180-$420 |
| Metal duct section replacement with sealing | $320-$680 |
| Asbestos mastic remediation + hazmat protocol | $400-$900 additional |
| Duct insulation wrap (per linear foot) | $8-$14 |
Factors that affect your specific price: accessibility of duct runs, presence of asbestos materials, number of leaks found during camera inspection, and whether your system needs cleaning before sealing can proceed. We disclose everything before work starts. Estimates are free. Call (844) 685-6342.
Standing offers: $50 off any repair over $250. Free second opinion on any written estimate. Permanent 5% senior and veteran discount.
We Also Serve Cities Near East Los Angeles
Our Duct Repair & Sealing in East Los Angeles coverage extends to neighboring communities with the same response standards and pricing. We regularly work in Boyle Heights, Montebello, Monterey Park, and Maywood, where many homes share the same post-WWII construction patterns and aging duct infrastructure.
Serving East Los Angeles, CA - Our Local Coverage Area
We’re based in the East Los Angeles 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 East Los Angeles
The diesel particulate from these freight corridors infiltrates leaky ducts at concentrations far exceeding inland neighborhoods, coating the interior with carbon soot that standard cleaning won’t fully address. We use specialized mastic sealants and carbon-specific cleaning protocols to prevent re-entrainment of PM2.5 into your living space. Call (844) 685-6342 for a camera inspection that shows exactly what’s inside your ducts.
We first test and identify any asbestos-containing mastic, then follow California hazmat protocols for containment and safe handling before applying new sealant. The original tape is not disturbed; it’s encapsulated or carefully removed by certified procedures, then replaced with modern, non-toxic mastic and metal-backed tape. This typically adds $400-$900 to the project but protects your family’s long-term health. We explain every step before starting.
Yes. Collapsed flex duct is one of the most common problems we find in East Los Angeles’s 1940s-1960s housing stock. We remove the damaged run, install properly supported new flex with sealed connections, and verify airflow at each register. Most flex repairs are completed in under two hours. We recently sealed a 1950s stucco bungalow on Olympic Boulevard near Eastern Avenue, where the original flex duct had sagged and torn at multiple joints, dumping soot into the hallway registers. Using Rotobrush tools and mastic sealant, we repaired the runs and sealed all leaks, reducing the homeowner’s indoor PM2.5 readings by 40%.
We specify professional-grade mastic from Nikro and Honeywell, flex duct and insulation from Aprilaire, and cleaning equipment from Rotobrush and Abatement Technologies. These are the same brands commercial HVAC contractors use, not hardware-store substitutes. Our vans stock them locally, so East Los Angeles customers don’t wait on parts.
Most complete duct sealing jobs for a home that size take four to six hours, including camera inspection, leak detection, sealing, and final verification. If asbestos mastic is present, add two to three hours for proper containment protocols. We finish in one visit. Call (844) 685-6342 to schedule - estimates are free, and we’ll be there when we say.
Ray Castillo and our team at Bellows Air Duct & Vent Co. have served East Los Angeles homeowners for over 42 years. We stand behind every job with our 90-Day Done Right Promise - no paperwork, no arguing. One honest price, shown before we start. No bait coupons, no surprises on the bill.
Call (844) 685-6342 today for your free estimate on duct repair and sealing in East Los Angeles.
Written by Ray Castillo, Owner at Bellows Air Duct & Vent Co., serving East Los Angeles since 1984.