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 West Hollywood
Duct sealing in West Hollywood typically runs $450 – $1,200 for a single system, with most jobs completed in one day. Our crews are dispatched from the brand’s Los Angeles office and serve West Hollywood directly, carrying the tools and materials needed for the city’s distinctive housing stock on every van. Call (361) 326-5060 for a free, written estimate before any work starts.
We’ve been working in West Hollywood long enough to know the difference between a hillside duplex off the Sunset Strip and a 1960s rent-controlled courtyard building on Fairfax Avenue. The duct problems aren’t the same, and the fixes shouldn’t be either. That’s why our Duct Sealing team arrives with mastic and mesh for rigid metal runs, foil tape rated for dry-climate cycling, and the negative-air equipment to clean before we seal. In this city, sealing over dirty or disconnected ducts is a waste of your money and our time.
Why Hollis Air Duct Cleaning Is West Hollywood’s Preferred Duct Sealing Company
We’ve built our reputation in West Hollywood on showing up inside the window, pricing in writing, and leaving the site clean. The Garrison Standard applies to every job here, whether it’s a single PTAC unit in a boutique office on Santa Monica Boulevard or a full shared-wall system in a 1950s apartment building near Melrose. Our technicians are background-checked and uniformed, and you know who’s arriving before they walk through the door.
Our phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops, no callback queues, no waiting until Monday when a tenant complaint is sitting on a property manager’s desk.
Every repair we complete in West Hollywood is covered by our 365-Day Done Right Promise. If the work fails within a year, we return and make it right at no charge, including a free second visit. That’s not a slogan; it’s written on every job.
We know the local conditions that break seals here: the Santa Ana winds that pressurize building envelopes each fall, the dry air that cracks mastic faster than in humid climates, and the original 1960s ductwork routed through shared walls that was never designed for modern airflow demands. That local knowledge means we don’t just seal what we see. We trace the system, test the pressure, and document the fix.
Duct Repair in West Hollywood
Duct Repair in West Hollywood is often the step before sealing, or the step that makes sealing possible at all. In this city’s rent-controlled apartment buildings, we find crushed branch runs, disconnected returns at the air handler, and original 1960s metal that has separated at the joints after decades of thermal cycling. A typical duct repair in West Hollywood runs $280 – $650 for localized fixes, with more extensive reconstruction in shared-wall systems reaching $800 – $1,400.
When Repair Comes Before Sealing
You can’t seal a duct that isn’t physically connected. In older WeHo buildings, we regularly find 6-inch branch runs that have pulled away from the main trunk or collapsed entirely within wall cavities. Our techs open the access, rehang or replace the damaged section, and only then apply sealant. The repair is priced separately and in writing before we cut into anything.
Pressure Testing After Repair
We verify every repair with a manometer before we call the job complete. If the supply and return are still pulling from a neighboring chase, the seal hasn’t done its job. That test is standard on every West Hollywood duct repair, not an upsell.
Air Duct Sealing in West Hollywood
Air Duct Sealing in West Hollywood addresses the leaks and gaps that force your HVAC system to heat or cool air that never reaches the rooms you use. In this market, the work is almost always performed in multi-unit residential or commercial buildings, not single-family homes. A typical air duct sealing job in West Hollywood runs $450 – $1,200 for a single system, with larger shared-wall configurations or multiple units in a building ranging $1,500 – $3,800.
Mastic and Mesh for Permanent Seals
We seal metal duct joints with water-based mastic reinforced with fiberglass mesh, not foil tape alone. The mastic remains flexible enough to handle thermal expansion but cures to a hard, durable surface. In West Hollywood’s dry climate, this outlasts tape that cracks within a few seasons of Santa Ana wind exposure.
Documenting Cross-Contamination Before Sealing
In rent-controlled buildings, we document airflow between units before we seal. If cooking odors, smoke, or dust are moving through shared-wall chases, sealing the visible joints without addressing the source path just moves the problem. Our camera inspection and pressure mapping identify the real breach.
Trusted Brands We Service in West Hollywood
We carry parts and materials from Aprilaire, Abatement Technologies, and Guardsman on every West Hollywood van, along with professional-grade sealing compounds rated for the dry-climate cycling this city sees. Our rotary brush systems from Rotobrush and negative-air machines from Nikro handle the pre-seal cleaning that older WeHo buildings often need. When a property manager on Havenhurst Drive or a tenant above the Sunset Strip calls, we don’t need to order parts and come back. We stock what breaks, and we stock what fixes it.
Common Duct Sealing Problems We See in West Hollywood Homes
- Shared-wall cross-contamination. Original 1950s – 1970s duct runs in WeHo rent-controlled buildings are routed through common wall cavities. When seals fail, air from one unit pulls directly from another. We map the pressure path before we seal anything.
- Dry-climate seal degradation. West Hollywood’s Mediterranean dryness and seasonal Santa Ana winds crack older mastic and foil tape faster than in humid metros. A seal that lasts ten years in Houston might need attention in five here.
- Disconnected returns at the air handler. In 1960s buildings with original systems, the return duct has often separated from the blower cabinet. The unit still runs, but it’s pulling unconditioned air from the attic or wall cavity. Sealing the visible joints misses this entirely.
- Deferred maintenance triggered by complaint. Many West Hollywood landlords delay duct work until a tenant files with the Rent Stabilization Department. By then, decades of accumulated debris must be source-removed with agitation tools under negative pressure before any sealant will adhere properly.
Pricing for Duct Sealing in West Hollywood, CA
Honest pricing means ranges you can use before you call, not a teaser that doubles once the van is on your drive. In West Hollywood, duct sealing for a single residential system typically runs $450 – $1,200. Multi-unit shared-wall systems or commercial configurations range $1,500 – $3,800. Duct repair, when needed before sealing, adds $280 – $650 for localized fixes or $800 – $1,400 for extensive reconstruction.
What moves the price: the system’s accessibility (attic, basement, or shared wall), the extent of disconnection or damage we find, whether pre-seal cleaning is required, and whether pressure testing reveals cross-contamination that needs additional access points. We give you one flat price per system, agreed in writing before any work starts. No per-vent pricing. No invoice that balloons at the door. Estimates are free. Call (361) 326-5060.
We Also Serve Cities Near West Hollywood
Our crews work throughout the central LA basin. We regularly complete Duct Sealing in West Hollywood and travel to Beverly Hills, Culver City, Glendale, and Burbank for property managers and homeowners with multiple locations. The same written pricing, same 365-Day Done Right Promise, same background-checked technicians at every stop.
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 About Duct Sealing in West Hollywood
Shared-wall buildings require pressure mapping and camera inspection to document cross-contamination between units before sealing begins. Access is tighter, systems are often original to the 1960s, and the work must satisfy both the tenant and the Rent Stabilization Department. That documentation and coordination adds time and labor compared to a standalone home with accessible basement ductwork. Call (361) 326-5060 for a written estimate on your specific building.
Yes, if the odor is moving through a breached duct joint or disconnected return in a shared wall. We got a call from a property manager on Havenhurst Drive in the 90069 ZIP after a tenant reported that cooking odors from the unit below were showing up at her registers. Our tech ran a camera inspection and found a crushed 6-inch branch run in the shared wall cavity and a disconnected return at the air handler, both original to the 1960s building. We sealed the joints with mastic and mesh, reconnected the return, and verified with a manometer that the unit’s supply and return ducts were no longer pulling air from the neighboring chase. If the odor path is through the building envelope rather than the ducts, we’ll tell you that too. Call (361) 326-5060 to schedule an inspection.
The dry Mediterranean air and seasonal Santa Ana winds cause mastic and foil tape to crack faster than in humid climates. A seal that might last a decade in Florida can develop gaps in half that time here. We use flexible, water-based mastic reinforced with mesh rather than tape alone, and we recommend re-inspection every three to five years in West Hollywood’s conditions. Call (361) 326-5060 to schedule a pressure test if your last seal was more than a few years ago.
Usually, yes. In buildings where maintenance was deferred until a Rent Stabilization complaint, decades of accumulated debris coats the duct walls. Sealant won’t adhere to grease, dust, or degraded fiberglass lining. We source-remove the debris with rotary brush agitation under negative pressure using our Nikro equipment, then seal. The cleaning is priced separately and in writing before we begin. Call (361) 326-5060 for an assessment of your system’s condition.
These units often have dedicated systems in tight mechanical closets or rooftop package units with short, exposed duct runs. The work is typically faster than shared-wall apartment sealing because there’s no cross-contamination mapping, but access can be challenging and parking for our van is its own puzzle on those hillside streets. We schedule these jobs with extra travel time built in, and our technicians carry the full material stock so we’re not making multiple trips. Many clients in the 90069 ZIP require after-hours, discreet service, which we accommodate. Call (361) 326-5060 to arrange a time that works for your schedule.
Ready to stop losing conditioned air through gaps you can’t see? Call Hollis Air Duct Cleaning at (361) 326-5060 for a free, written estimate on duct sealing in West Hollywood. We’ll show up inside the window, price it before we touch it, and stand behind the work for a full year.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving West Hollywood since 2004 as part of the Garrison Partners family.