Fast, Reliable Duct Repair & Sealing Across West Hollywood
Duct repair and sealing in West Hollywood typically runs $280-$650 for most apartment and townhome units, with same-day service available when you call before noon. Our Duct Repair & Sealing team knows the tight ceiling plenums and narrow wall cavities of WeHo’s mid-century buildings inside and out, and we carry compact equipment built specifically for these spaces. We’ve been driving to West Hollywood from our Los Angeles base since 1984, and most calls along Santa Monica Boulevard, Melrose Avenue, or the side streets off Sunset reach us within 45 minutes during business hours. Call (855) 401-6006 and a live person picks up, 24 hours a day. We’ll give you an honest price before we start, and we stand behind it with our 90-Day Done Right Promise in writing.
Why Bellows Air Duct & Vent Co. of California Is West Hollywood’s Preferred Duct Repair & Sealing Company
We’ve worked in West Hollywood’s 2-4 story apartment buildings long enough to know which ones have original metal ductwork from the 1950s and which got flex duct retrofitted through shared attics in the 1980s rush. That knowledge saves time. It also saves tenants and property managers from the cross-contamination headaches that can spiral into complaints under WeHo’s strict rent stabilization framework.
Our technicians are background-checked and uniformed on every job. They arrive with Rotobrush compact tools and professional-grade mastic sealant, not guesswork. Most West Hollywood repairs finish in a single visit because we’ve seen these building types before. The price we quote on the phone matches the invoice. No bait coupons, no changes at the door. Roger Castañeda has run Bellows this way since long before app-based dispatching existed, and we still answer with a live person around the clock.
West Hollywood customers get our standing offers: $50 off any repair over $250, a free second opinion on any written estimate you bring us, and a permanent 5% senior and veteran discount. Our $89 Seasonal Tune-Up catches small duct leaks before they turn into bigger problems in buildings where maintenance has been deferred for decades.
Our Duct Repair & Sealing Services in West Hollywood
Duct Sealing
Leaky ducts in West Hollywood apartments waste 20-30% of conditioned air before it reaches the vent. In buildings where original metal runs have sat untouched since the Nixon administration, we seal joints and seams with mastic sealant rated for the temperature swings these systems see. We camera-inspect before and after, so you see the difference. A typical duct sealing job in a West Hollywood 2-bedroom apartment runs $320-$480.
Flex Duct Repair
Flex duct installed during 1980s and 1990s HVAC retrofits in WeHo buildings is now reaching end of life. Kinked runs in tight attic spaces collapse partially or fully, choking airflow and straining the blower motor. We replace damaged flex sections with properly supported new runs, sized correctly for the static pressure these old buildings demand. Most flex duct repairs in West Hollywood fall between $280-$520 depending on access difficulty.
Metal Duct Repair
Original galvanized steel ductwork in pre-1979 West Hollywood buildings corrodes at seams and develops whistling leaks that tenants notice before landlords do. We patch or replace damaged sections, re-seal with mastic, and reinforce where vibration has loosened hangers. Metal duct repair in these older WeHo systems typically costs $350-$650.
Duct Insulation
Uninsulated or degraded duct insulation in shared attic spaces between West Hollywood units creates temperature loss and condensation issues. We install new foil-faced insulation with proper vapor barriers, critical in WeHo’s dry Santa Ana wind seasons when temperature differentials spike. Duct insulation work runs $400-$720 for typical apartment systems.
Mastic Sealant Application
We use mastic sealant, not duct tape, on every West Hollywood job. Tape dries and fails; mastic remains flexible and airtight for the life of the system. In buildings where decades of deferred maintenance have left original seals crumbling, we brush or spray mastic across every joint, seam, and penetration. This is standard on our duct sealing and metal duct repair calls, not an upsell.
Air Leak Repair
Disconnected boots, failed dampers, and penetrations cut for electrical or plumbing runs create uncontrolled air leakage in West Hollywood’s dense housing stock. We pressure-test, locate, and seal these leaks with methods matched to the material: mastic for metal, proper connectors and support for flex, fire-rated foam where code requires.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
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 West Hollywood
We stock parts and sealing products from Honeywell and Aprilaire, the same brands serious HVAC contractors specify for commercial and residential work. Our Rotobrush compact duct cleaning and inspection tools navigate the tight plenum spaces common in WeHo’s mid-century buildings where standard equipment simply won’t fit. For properties requiring HEPA-level air quality control or specialized sanitizing after wildfire smoke intrusion, we specify Abatement Technologies filtration and recovery systems. West Hollywood customers don’t wait on parts orders from across town. Our trucks carry the sealants, connectors, and repair sleeves these buildings actually need.
Common Duct Repair & Sealing Problems We See in West Hollywood Homes
- Kinked flex duct from 1980s retrofits. HVAC systems added to buildings never designed for central air were routed through whatever attic or wall space existed. Decades later, these flex runs sag, kink, or collapse partially, cutting airflow by 30% or more. We find this in buildings from the Norma Triangle to the streets north of Melrose.
- Cross-contamination between units via shared attic duct runs. Retrofitted systems in WeHo’s dense apartment stock frequently share attic plenum space. One unit’s leak or dirty duct can pull contaminants into a neighbor’s supply. This is a liability issue landlords under rent stabilization are motivated to fix fast once documented.
- Mastic sealant failure on original metal ducts. Pre-1979 metal ductwork in West Hollywood has often never been resealed. Original mastic dries, cracks, and flakes away. We strip and reapply on dozens of these systems annually, particularly in the Spanish Colonial Revival buildings along Fountain Avenue and Harper Avenue.
- Santa Ana wind particulate intrusion. West Hollywood’s position below the Hollywood Hills canyons channels wildfire smoke and ash directly into rooftop HVAC intakes. Duct leaks then distribute these particulates throughout units. Sealing the duct system is the first defense after filtration upgrades.
Pricing for Duct Repair & Sealing in West Hollywood, CA
Most duct repair and sealing work in West Hollywood falls between $280 and $650. Here’s how typical jobs break down:
| Service | Typical Range in West Hollywood |
|---|---|
| Basic duct sealing (mastic, apartment unit) | $320-$480 |
| Flex duct repair/replacement section | $280-$520 |
| Metal duct repair with resealing | $350-$650 |
| Duct insulation replacement | $400-$720 |
| Full system inspection with camera + written report | $89-$150 |
What moves a job toward the higher end: third-floor access with no service elevator, shared attic work requiring coordination with adjacent units, extensive corrosion in original metal systems, or discovery of unpermitted retrofits that need correction before proper sealing can begin. We disclose the full price before starting. No surprises on the bill. Estimates are free. Call (855) 401-6006.
At a 1950s Streamline Moderne building on Santa Monica Boulevard, we sealed leaking flex duct joints in a third-floor unit where kinked retrofitted runs were reducing airflow by 40%; we used Rotobrush tools and mastic sealant to restore the system before cross-contamination could trigger a tenant complaint under WeHo’s strict rent stabilization rules.
We Also Serve Cities Near West Hollywood
Our technicians regularly cross into West Hollywood from calls in Beverly Hills, Century City, Hollywood, and Universal City. The same tight-space expertise and compact equipment we use in WeHo’s mid-century apartments translates directly to the varied housing stock of these neighboring communities. One honest price, shown before we start, no matter which city you’re in.
Serving West Hollywood, CA - Our Local Coverage Area
We’re based in the West 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 West Hollywood
West Hollywood’s 1979 Rent Stabilization Ordinance has led to deferred duct maintenance in thousands of pre-1979 apartments, meaning original ductwork-often metal or flex retrofitted through shared attic spaces-has never been professionally sealed or repaired. Leaks develop at joints and seams that tenants cannot see inside walls and ceilings. We camera-inspect to document these hidden failures. Call (855) 401-6006 for a free inspection and exact quote.
West Hollywood’s position on the inland edge of the Los Angeles Basin channels Santa Ana wind events that push wildfire smoke, ash, and dry particulate matter into HVAC systems with little warning. Because WeHo receives virtually no cleansing rainfall between May and October, particulates that enter through leaky duct systems remain trapped until mechanically removed. Sealed ducts reduce intrusion points by 60% or more. We inspect and seal before peak wind season. Call (855) 401-6006 to schedule.
Yes. We replace failed flex duct sections in these retrofitted systems regularly, using properly sized and supported new runs that won’t kink in the tight spaces the original installers were forced to work with. The 1980s retrofit wave in WeHo used suboptimal routing through non-engineered pathways; we correct this where possible. Most flex duct repairs in these buildings run $280-$520. Call (855) 401-6006 for an exact quote on your unit.
West Hollywood’s rent stabilization framework does not explicitly mandate duct sealing at turnover, but it does require habitable conditions and creates strong tenant recourse for air quality issues. Cross-contamination between units via shared attic duct runs, once documented, becomes a code and liability problem landlords are motivated to resolve quickly. We provide camera-documented inspection reports that satisfy property managers and tenant advocates alike. Call (855) 401-6006 for documentation that protects both parties.
We specify mastic sealants and application equipment from Honeywell and Aprilaire for their flexibility and temperature ratings, plus Abatement Technologies HEPA systems when smoke or particulate recovery is needed after Santa Ana wind events. These are the same brands commercial HVAC contractors use, not discount hardware-store alternatives. Our trucks stock them locally. Call (855) 401-6006 to confirm availability for your job.
Written by Roger Castañeda, Owner at Bellows Air Duct & Vent Co. of California, serving West Hollywood since 1984.