Fast, Reliable Duct Repair & Sealing Across West Gate
Duct repair and sealing in West Gate typically costs $180-$650 depending on whether you’re patching flex duct in a single apartment or resealing a shared metal trunk line in an older multi-family building. Most West Gate jobs are completed in one visit, and our technicians carry mastic sealant, flex duct, and metal repair parts on every truck. Call (844) 685-6342 for a free estimate - we’ll give you the full price before we start.
We’ve been driving to West Gate since 1984, long before the Palm Beach Outlets expanded and Southern Boulevard turned into the corridor it is today. Our Duct Repair & Sealing team knows the 33409 ZIP by sight: the low-rise apartment complexes off Okeechobee Boulevard, the rental units tucked behind Forest Hill Boulevard, the 1970s-era buildings where the original ductwork is still doing its best after forty-plus years of Florida humidity. When a West Gate property manager or homeowner calls us, we don’t need a map. We need about thirty minutes to load the truck.
Why Bellows Air Duct & Vent Co. Is West Gate’s Preferred Duct Repair & Sealing Company
Ray Castillo built this company on the idea that a square deal means saying what you’ll do, doing it, and standing behind it without making the customer fill out forms. That approach has kept us in business for over 42 years, and it’s why West Gate property managers call us back when the next building needs attention. We’re not the cheapest option, and we don’t try to be. We’re the option that doesn’t need to be called back.
Our technicians are background-checked and uniformed, and they answer to a live person at our office - not a voicemail, not an app - 24 hours a day. When you call (844) 685-6342, someone picks up. That’s been true since 1984.
Every job gets a camera inspection before and after. You see what we see: the cracked mastic, the deteriorating fiberglass liner, the air leaks that are driving up your FPL bill. Then you see it fixed. Our 90-Day Done Right Promise is stamped on every invoice - if it’s not right, we return at no charge with no paperwork required.
We also offer a Free Second Opinion on Any Written Estimate. If another company quoted you a duct replacement in West Gate and something felt off, we’ll inspect it with our camera and tell you straight whether the repair is necessary.
Our Duct Repair & Sealing Services in West Gate
Mastic Sealant Application
The original mastic sealant applied in West Gate’s 1970s and 1980s buildings has had decades to dry out, crack, and peel under Palm Beach County’s relentless humidity. We scrape away the failed material and apply fresh, professional-grade mastic sealant rated for continuous moisture exposure. In West Gate’s climate, this isn’t cosmetic. Cracked mastic means conditioned air leaking into wall cavities and attic spaces, which means your air handler runs longer, works harder, and dies sooner. We recently sealed a leaking metal trunk line at a 1978-built complex on Dunbar Lane where multiple units shared a single air-handler closet. The original mastic had cracked, causing visible air leaks that reduced cooling to three apartments. We cleaned the ducts with a Rotobrush system and reapplied fresh mastic sealant, restoring balanced airflow and cutting the property manager’s energy complaints by half.

Flex Duct Repair
Flex duct is common in West Gate’s older apartment conversions and smaller rental units. The plastic outer layer degrades in attics that regularly exceed 130 degrees, and the inner liner tears where it contacts framing or where pests have found entry. A typical flex duct repair in West Gate runs $180-$320 for accessible sections. We use insulated flex duct that matches or exceeds the original R-value, and we seal every connection with mastic, not tape - tape fails in six months here, and we don’t do work that needs redoing.

Metal Duct Repair
Galvanized metal ductwork in West Gate’s multi-family buildings often outlasts the flex and fiberglass components, but the seams and joints are its weak point. Rust forms where condensation collects at low points, and vibration from shared air handlers loosens connections over years of continuous operation. Metal duct repair in West Gate typically ranges from $280-$550 depending on accessibility and whether sections need replacement versus resealing. We cut out corroded portions, fabricate replacement sections on-site, and seal with mastic and mechanical fasteners - not shortcuts.

Duct Insulation
When fiberglass duct liners in West Gate’s older buildings deteriorate, they don’t just lose efficiency. They shed fibers into the airflow and create a porous surface that harbors mold. In some cases, we can install an internal duct liner replacement; in others, the metal shell is sound but the insulation needs upgrading. Duct insulation work in West Gate generally runs $350-$650 for typical apartment units. We assess with our camera first, then recommend the approach that actually solves the problem rather than covering it up.

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 Gate
We stock parts and specify equipment from Rotobrush, Abatement Technologies, and Aprilaire - the same brands serious HVAC contractors use when they’re installing systems meant to last. For West Gate customers, this means we don’t need to order parts and make you wait. Our trucks carry mastic sealant, flex duct in common diameters, metal repair sections, and insulation materials sized for the apartment and small residential units that dominate the 33409 ZIP. Most repairs are completed in a single visit because we’ve already got what we need.
Common Duct Repair & Sealing Problems We See in West Gate Homes
- Cracked original mastic causing energy waste. The mastic applied in the 1970s and 1980s has a finite lifespan, and West Gate’s year-round humidity accelerates its failure. Once it cracks, you’re paying to cool your attic.
- Deteriorating fiberglass liners shedding contaminants. Older fiberglass-lined metal ducts in West Gate complexes break down internally, releasing fibers and providing a substrate for mold. This requires more than cleaning - it requires structural repair or replacement.
- Shared trunk lines hiding cross-contamination. Multiple units fed from a single air-handler closet or trunk line means mold, pest debris, or odors migrate between apartments. Sealing one unit without addressing the common system is a temporary fix at best.
- Flex duct collapsed or torn in hot attics. West Gate’s attic temperatures destroy flex duct from the outside in. We find crushed, disconnected, or perforated sections that have been blowing conditioned air into insulation for months or years.
Pricing for Duct Repair & Sealing in West Gate, FL
We’re upfront about numbers because nobody likes surprises on the bill. Here’s what duct repair and sealing costs in West Gate’s market:
| Service | Typical Range in West Gate |
|---|---|
| Flex duct repair (single accessible run) | $180 - $320 |
| Mastic sealant reapplication (standard apartment unit) | $220 - $380 |
| Metal duct repair (seam/joint work) | $280 - $550 |
| Metal duct section replacement | $350 - $650 |
| Duct insulation replacement or upgrade | $350 - $650 |
| Building-level trunk line sealing (multi-unit) | $500 - $1,200+ |
What moves the price: accessibility (crawl space versus open attic), whether we need to coordinate with property management for shared systems, and the extent of mold or contamination that must be addressed before sealing. We inspect with our camera first, show you what we found, and give you the exact price before we lift a tool. Our $50 Off Any Repair Over $250 applies to most duct sealing jobs in West Gate. Seniors and veterans receive a permanent 5% discount.
We Also Serve Cities Near West Gate
Our service area covers West Gate and the surrounding Palm Beach County communities: West Palm Beach, Palm Beach, Riviera Beach, and Palm Springs. The same technicians, same trucks, same upfront pricing. Whether you’re managing a property off Okeechobee Boulevard or own a home near the Palm Beach Outlets, we travel to you.
Serving West Gate, FL - Our Local Coverage Area
We’re based in the West Gate 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 Gate
West Gate’s 1970s-1980s multi-family buildings have original ductwork that was never designed for four decades of continuous operation, and shared air-handler closets mean one unit’s leaks affect multiple households. The combination of aged materials, high humidity, and interconnected systems creates building-level problems that single-unit approaches cannot solve. Call (844) 685-6342 and we’ll inspect with our camera to show you exactly what’s happening in your specific building.
We can seal them temporarily, but deteriorating fiberglass liner is a structural failure that sealing alone cannot fix - the liner will continue shedding fibers and harboring mold. We typically recommend removing the failed liner and either applying a new internal coating or replacing the duct section, depending on what our camera inspection reveals. We’ll show you both options with exact prices before you decide.
Palm Beach County’s year-round humidity above 70% keeps duct interiors moist even when the AC is running, which accelerates the breakdown of standard sealants and promotes mold growth on any organic material. We use mastic sealants specifically rated for wet conditions, and we verify with our camera that the seal has cured properly before we close the job. In West Gate’s climate, proper material selection matters more than in drier markets.
We can seal your individual branch lines, but if the shared trunk line or air handler itself is leaking or contaminated, you’ll continue to experience cross-contamination and efficiency losses. We always inspect the common system with our camera and report what we find to you and your property manager. In many West Gate buildings, the most cost-effective solution is addressing the shared components first, then sealing individual units.
Sealing leaking flex ducts in a typical West Gate apartment runs $180-$320 for accessible sections, or $280-$450 if we need to replace torn or collapsed portions with new insulated flex duct. If the leaks are at connections to a shared metal trunk line, the repair may fall into the $350-$550 range depending on accessibility. We’ll give you the exact figure after our free camera inspection - call (844) 685-6342 to schedule.
Written by Ray Castillo, Owner at Bellows Air Duct & Vent Co., serving West Gate and Palm Beach County since 1984.