Fast, Reliable Duct Repair & Sealing Across West Palm Beach
We answer calls from West Palm Beach homeowners every week who’ve noticed their AC running longer, rooms that won’t cool evenly, or musty air pushing through vents. In a city where your system works ten or eleven months straight, even a small duct leak wastes serious money fast. Our Duct Repair & Sealing team covers all of West Palm Beach, from the historic blocks of Flamingo Park and El Cid to the master-planned communities out near 33411 and 33412. Most calls reach us within minutes, and we typically schedule same-day or next-day appointments. Call (844) 685-6342 for a free estimate - we’ll show you exactly what we find, before we start.
Why Bellows Air Duct & Vent Co. Is West Palm Beach’s Preferred Duct Repair & Sealing Company
We’ve been at this since 1984. That’s over 42 years of working in homes where the ductwork tells a story the walls don’t. In West Palm Beach, that story usually involves salt air, decades of humidity, and retrofit jobs done before most of us were born.
Our technicians are background-checked, uniformed, and trained to spot the failure patterns that repeat in local housing stock. They carry the equipment to fix it in one visit - Rotobrush and Nikro tools, plus the mastic sealant and metal stock to handle both flex and galvanized repairs on the spot. Every job gets a camera inspection before and after, so you see what we see. No claims without proof.
Our 90-Day Done Right Promise applies to every West Palm Beach job we take. If it’s not right, we come back and make it right. No paperwork to file, no argument. Ray Castillo built that into the company from day one, and we still honor it the same way.
Calls are answered by a live person, 24 hours a day. Not a voicemail tree. Not an app. A real person who can get a technician moving toward your neighborhood.
Our Duct Repair & Sealing Services in West Palm Beach
Duct Sealing with Mastic Sealant
West Palm Beach’s year-round AC operation pushes enormous air volume through joints that were never meant to handle it. We seal every accessible joint, seam, and penetration with professional-grade mastic sealant - not the tape that dries and flakes in attic heat. Mastic stays flexible, which matters in attics that hit 140 degrees. A typical sealing job in West Palm Beach runs $350-$650 for a single system, depending on access and how many runs need attention. We also apply mastic to metal-to-flex connections, which is where we most often find separations in older homes east of I-95.
Flex Duct Repair
Flex duct fails differently in West Palm Beach than almost anywhere else we work. In the tight, unventilated attics of Flamingo Park and Northwood Hills, unstrapped flex sags over time, creating low spots where condensate pools. That standing water breeds mold and eventually collapses the inner liner. We recently repaired ductwork in a 1940s Flamingo Park bungalow where the original galvanized trunk line had corroded from salt air infiltration, and poorly secured flex duct had sagged to form a condensate trap. We replaced the corroded metal section, installed proper strapping to eliminate sags, and sealed all joints with mastic sealant, restoring airflow and preventing future moisture buildup. Flex duct repair in West Palm Beach typically costs $280-$520 per run.
Metal Duct Repair
Galvanized steel trunk lines from 1950s and 1960s retrofits are still carrying air in hundreds of West Palm Beach homes, especially in ZIP codes 33401, 33405, and 33407. Salt-laden coastal air infiltrates attics and corrodes these from the outside in, while interior condensation works from the inside out. We cut out failed sections, fabricate replacements on-site, and seal with mastic and mechanical fasteners. Metal repair runs $400-$780 depending on the extent of corrosion and whether we’re working around original framing. We don’t replace what can be saved, and we don’t patch what can’t.
Duct Insulation Replacement
When fiberglass duct insulation gets wet repeatedly - common in West Palm Beach’s humid attics - it compresses, loses R-value, and becomes a mold substrate. We strip damaged insulation, treat the underlying duct, and re-wrap with fresh material sealed at every seam. Insulation work typically runs $450-$850 for partial replacement, $1,200-$1,800 for full system re-insulation in larger homes.
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 Palm Beach
We stock parts and materials from Abatement Technologies, Rotobrush, and Nikro - the same brands serious HVAC contractors specify when they’re building systems to last in harsh climates. That local inventory means we’re not ordering parts and making you wait. Most West Palm Beach repairs finish in a single visit because we showed up prepared for what your housing stock typically needs.
Common Duct Repair & Sealing Problems We See in West Palm Beach Homes
- Unstrapped flex duct sags in tight attics. In historic neighborhoods like Flamingo Park and El Cid, retrofit flex runs were often laid without proper support. Gravity and humidity do the rest. The sag traps condensate that breeds mold and eventually collapses the duct from the inside.
- Salt-laden coastal air accelerates metal corrosion. West Palm Beach sits two to three miles from the Atlantic. That salt infiltrates attics and corrodes galvanized trunk lines, fasteners, and support hangers faster than homeowners expect. We find pinhole leaks and structural rust in systems less than twenty years old.
- Seasonal vacancy allows unchecked mold growth. Thousands of snowbird homes in 33401, 33405, and 33407 sit with AC off or in economy mode from April through October - exactly when humidity peaks above 80%. Ductwork becomes a still, moisture-saturated environment that incubates mold colonies all summer. When residents return in fall, they’re running systems loaded with active growth that needs immediate attention.
- Improperly sealed metal-to-flex connections separate under pressure. The original retrofits in 1920s-1950s concrete block homes often spliced flex onto metal with tape or inadequate mechanical fasteners. Decades of thermal cycling and vibration open these joints, dumping conditioned air into attics and pulling hot, humid attic air into the system.
Pricing for Duct Repair & Sealing in West Palm Beach, FL
We don’t do bait pricing. The number we give you on the phone is the number on the invoice, and we disclose it before a single tool is lifted.
| Service | Typical Range in West Palm Beach |
|---|---|
| Mastic duct sealing (single system) | $350 - $650 |
| Flex duct repair / replacement (per run) | $280 - $520 |
| Metal duct repair (sectional) | $400 - $780 |
| Duct insulation replacement (partial) | $450 - $850 |
| Full system re-insulation | $1,200 - $1,800 |
| Comprehensive duct sealing + repair package | $900 - $1,600 |
What moves you within these ranges? Attic access matters - tight crawl spaces take longer. The extent of corrosion or mold damage affects material and labor. And whether we’re repairing three runs or fifteen changes the scope significantly. We offer $50 off any repair over $250, a free second opinion on any written estimate you’ve already received, and a permanent 5% senior and veteran discount. Call (844) 685-6342 for an exact quote - estimates are free, and we’ll show you camera footage of what we’re quoting before you decide.
We Also Serve Cities Near West Palm Beach
Our service area extends to West Palm Beach and the surrounding communities - West Gate, Palm Beach, Palm Springs, and Riviera Beach. Same live-answer dispatch, same 90-Day Done Right Promise, same upfront pricing. If you’re in a neighboring city and your ducts need attention, we cover your ZIP too.
Serving West Palm Beach, FL - Our Local Coverage Area
We’re based in the West Palm Beach 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 Palm Beach
Original HVAC retrofits in 1920s-1950s concrete block homes often ran flex duct through tight, poorly ventilated attics without proper strapping. Over decades, gravity and humidity cause sagging that traps condensate and creates standing mold reservoirs - a failure pattern we see almost exclusively in ZIP codes east of I-95 like 33401 and 33405. Call (844) 685-6342 for a free inspection if your home dates to this era.
Salt-laden coastal air accelerates corrosion on galvanized metal duct components, fasteners, and support hangers, leading to air leaks and structural failure years sooner than in inland markets. We inspect for exterior rust and interior condensation damage on every metal duct job, and we use corrosion-resistant materials where replacement is needed. Call (844) 685-6342 for an exact quote - estimates are free.
Repair ductwork before seasonal residents return, ideally in late August or September, so the system is sealed, clean, and mold-free before full occupancy resumes. Waiting until after arrival means running contaminated air through the house while scheduling around peak demand. We see our busiest call volume from October through December as snowbirds discover what grew in their ducts all summer. Call (844) 685-6342 to book ahead of the rush.
Post-1990s subdivisions in 33411 and 33412 used standard residential flex duct, but the high local humidity still accelerates liner degradation faster than in drier inland markets. Repairs here typically involve replacing degraded flex runs, sealing connections that have loosened from thermal cycling, and addressing insulation that has compressed from repeated moisture exposure. Call (844) 685-6342 for a free estimate on your specific system.
Yes - professional-grade mastic sealant is specifically formulated to remain flexible and adhesive in high-humidity, high-heat attic environments, which is why we use it instead of tape products that dry, crack, and fail. We’ve tracked sealed joints in West Palm Beach attics for over a decade without failure. Call (844) 685-6342 for an exact quote - estimates are free.
Ready to stop losing cooled air to your attic? Call Bellows Air Duct & Vent Co. at (844) 685-6342 for a free estimate on duct repair and sealing in West Palm Beach. We’ll show you what we find, quote one honest price before we start, and stand behind the work for 90 days - in writing, no arguing.
Written by Ray Castillo, Owner at Bellows Air Duct & Vent Co., serving West Palm Beach since 1984.