Fast, Reliable Duct Repair & Sealing Across Sunrise
Duct repair and sealing in Sunrise typically runs $280-$750 for most residential jobs, with flex duct repair and mastic sealing completed same-day in most homes. We’re Bellows Air Duct & Vent Co., and our Duct Repair & Sealing team has been working in Broward County since 1984. Sunrise sits about 35 minutes from our dispatch center, and we route technicians through the Sawgrass Expressway corridor daily. If you’re in Sunrise Lakes, Welleby, or any of the original planned communities off Oakland Park Boulevard, we know the ductwork you’re living with. Call (844) 685-6342 for upfront pricing and a free estimate.
Why Bellows Air Duct & Vent Co. Is Sunrise’s Preferred Duct Repair & Sealing Company
We’ve worked on enough Sunrise homes to know the pattern before we pull the camera out. The concrete-block construction, the flex duct routed through uninsulated attics, the original systems from 1978 or 1983 still in place. Homeowners here don’t want a sales pitch. They want someone who recognizes what they’re dealing with and fixes it without needing a return trip.
Our 90-Day Done Right Promise covers every job in Sunrise - if it’s not right, we come back at no charge, no paperwork, no arguing. That promise is backed by our K.E.Y.S. values code, and it’s been non-negotiable since 1984. Our technicians are background-checked, uniformed, and carry professional-grade equipment from Rotobrush, Nikro, and Honeywell. Calls to our office are answered by a live person 24 hours a day, not an app or voicemail tree.
We don’t bait with low coupons and change the price at the door. The number we give you on the phone is the number on the invoice. For repairs over $250, we offer $50 off. We also provide free second opinions on any written estimate you bring us, a $89 seasonal tune-up, and a permanent 5% discount for seniors and veterans.
Our Duct Repair & Sealing Services in Sunrise
Flex Duct Repair
This is the work we do most often in Sunrise. The city’s housing stock - built primarily in the 1970s and 1980s - was fitted with flex duct systems that have now spent 40-plus years in attics exceeding 140°F through summer. That heat accelerates inner liner cracking and separation, creating collapsed sections that trap debris and block airflow to entire rooms. In the Sunrise Lakes neighborhood, we tackled a 1982 flex duct system where the mylar inner liner had completely detached from the insulation wrap, creating a 12-foot collapsed section that trapped debris and blocked airflow to two bedrooms. Using Rotobrush agitation and mastic sealant, we reconnected the separated liner and sealed the joints, restoring full airflow and eliminating the musty smell that had plagued the home. Most flex duct repairs in Sunrise run $320-$580 and are completed in a single visit.
Duct Sealing with Mastic Sealant
Air leaks at duct joints waste 20-30% of conditioned air in a typical Sunrise home, and that percentage climbs higher in systems that have been opened and poorly resealed over decades. We apply professional-grade mastic sealant - not duct tape, which fails in Florida humidity - to every joint and connection. The mastic remains flexible through thermal cycling and creates a permanent seal that holds up in those superheated attics. For Sunrise homes with original ductwork, mastic sealing often delivers the single biggest efficiency improvement available without replacing the system. Typical cost: $280-$450 for a full seal on a single-system home.
Metal Duct Repair
Some Sunrise homes, particularly townhome communities built in the early 1980s, used galvanized metal trunk lines with flex duct branches. The metal itself can corrode at seams where condensation collects, or separate at connections that were never properly sealed. We repair metal ductwork by resealing seams, replacing damaged sections, and transitioning properly to flex branches where needed. Metal repair tends to run higher - $450-$750 - but preserves the structural trunk line that would be costly to replace entirely.
Duct Insulation
Original flex duct in Sunrise was often installed with minimal insulation wrap, or the wrap has degraded after decades in the attic. We install new insulation sleeves or replace duct runs with properly insulated flex duct rated for the thermal demands of Florida attics. This is particularly important for supply lines running to west-facing rooms that already struggle against afternoon heat gain. Insulation upgrades typically run $380-$650 depending on linear footage.
What happens when you call
- 1
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 Sunrise
We carry parts and equipment from Nikro, Honeywell, and Aprilaire - the same brands serious HVAC contractors specify for commercial installations. For Sunrise homeowners, that means we don’t order parts and make you wait. Our trucks are stocked for the common failure modes we see in 1970s and 1980s systems, and we can source same-day replacements for the oddball fittings that turn up in older planned communities. The result is most jobs finished in one visit, not two or three.
Common Duct Repair & Sealing Problems We See in Sunrise Homes
- Flex duct inner liner delamination from extreme attic heat. Decades of exposure to 140°F-plus temperatures in unconditioned attics cause the mylar inner liner to separate from the insulation wrap. The resulting debris pockets block airflow and trap moisture, and they’re invisible until a camera inspection reveals them.
- Condensation at duct joints from oversized AC units. When Sunrise homeowners upgraded windows or added insulation without resizing equipment, the resulting short-cycling causes repeated condensation inside duct joints. This leaves visible moisture staining at supply registers and accelerates mold growth between cleaning cycles faster than we see in neighboring Plantation or Tamarac.
- Collapsed flex duct sections from thermal cycling and age. Original 1970s-1980s systems often sag or collapse at low points where the wire helix fatigues. Homeowners notice weak airflow to specific rooms first, but the root cause is usually a collapsed section buried deep in the attic.
- Mold colonization accelerated by Everglades spore loads. Sunrise’s inland position near the Everglades Water Conservation Areas means elevated airborne spore and pollen compared to coastal Broward. With AC running 10-12 months a year, those organics get pulled deep into ductwork where moisture and humidity create recurring mold problems if underlying duct condition isn’t fixed.
Pricing for Duct Repair & Sealing in Sunrise, FL
| Service | Typical Range in Sunrise |
|---|---|
| Mastic duct sealing (single system) | $280-$450 |
| Flex duct repair (sectional) | $320-$580 |
| Flex duct replacement (per run) | $380-$650 |
| Metal duct repair | $450-$750 |
| Duct insulation upgrade | $380-$650 |
| Full system inspection with camera | $89-$150 |
What moves a job toward the higher end: accessibility issues in tight attics, multiple collapsed sections requiring extensive reconnection work, or mold remediation that must precede sealing. We disclose the full price before lifting a single tool. Estimates are free. Call (844) 685-6342 for an exact quote on your Sunrise home.
We Also Serve Cities Near Sunrise
Our technicians work throughout central and eastern Broward County. If you’re in Sunrise or nearby Wilton Manors, North Andrews Gardens, Oakland Park, or Lauderdale-by-the-Sea, we’re routing through your area regularly. Same response standards, same upfront pricing, same 90-Day Done Right Promise.
Serving Sunrise, FL - Our Local Coverage Area
We’re based in the Sunrise 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 Sunrise
Sunrise’s inland position and older housing stock create a unique combination: uninsulated attics that exceed 140°F, original flex duct now 40-plus years old, and elevated spore loads from the nearby Everglades. That heat accelerates inner liner delamination, and the resulting debris pockets trap moisture and organic material that coastal cities with newer ductwork simply don’t face. Waiting turns a repairable section into a full replacement. Call (844) 685-6342 for a free camera inspection.
Camera inspection is the only reliable method. We inspect before and after every job. If the inner liner is detached but the wire helix and insulation wrap are intact, repair with mastic sealant is cost-effective. If multiple runs show collapsed sections, degraded insulation, and corrosion at metal transitions, replacement becomes the better long-term value. Most Sunrise homes we see fall into the repairable category. Call for a free second opinion on any estimate you’ve received.
Yes, significantly. Leaky return ducts pull hot, humid attic air directly into the system, overwhelming the AC’s dehumidification capacity. Sealing those leaks with mastic can lower indoor humidity by 10-15% in a typical Sunrise home. It’s not a complete solution - you still need proper AC sizing and drainage - but it’s often the most cost-effective humidity improvement available. We include humidity readings in our inspection report.
Oversized AC units short-cycling after homeowner efficiency upgrades. When Sunrise residents added insulation or replaced single-pane windows without resizing equipment, the AC runs too briefly to properly dehumidify, then sits idle while condensation forms at cool duct joints. The moisture migrates to supply registers and creates visible staining. We see this pattern frequently in Welleby and Sunrise Lakes. Duct sealing helps, but proper AC sizing is the permanent fix. We can refer you to a trusted HVAC contractor if needed.
Absolutely. In most Sunrise homes, we repair individual runs while leaving sound trunk lines in place. We reconnect separated liners, seal joints with mastic, and replace insulation wrap where degraded. This preserves the original system layout while restoring airflow and efficiency. Full replacement is only necessary when multiple runs have failed or the trunk line itself is compromised. Most of our Sunrise jobs are repairs, not replacements. Call (844) 685-6342 for an exact assessment.
Ready to fix the ductwork in your Sunrise home? Call Bellows Air Duct & Vent Co. at (844) 685-6342 for a free estimate. We’ll give you one honest price before we start, show you camera evidence of what we find, and back our work with the 90-Day Done Right Promise. No bait coupons, no surprises on the bill.
Written by Ray Castillo, Owner at Bellows Air Duct & Vent Co., serving Sunrise since 1984.