Fast, Reliable Duct Repair & Sealing Across Cibolo
Most duct repair and sealing jobs in Cibolo run $250-$650 and are finished in a single visit, with same-day scheduling available when you call (844) 685-6342. Our technicians know the 78108 area well, from the established streets near Cibolo Valley Drive to the newer phases around FM 1103 and the growing corridors toward Schertz. We’ve been driving these roads since long before Cibolo’s population doubled, and we’ve watched the housing stock shift from scattered ranch homes to dense subdivisions of two-story tract builds that all share the same hidden problem: ductwork installed fast, not installed right.
When your upstairs bedroom won’t cool below 78°F in July, or your vents push out a fine gray dust every time the system kicks on, that’s not normal for any home, especially not one built in 2012. We answer calls 24 hours a day, live, and we’ll give you an upfront price before we unload a single tool. Our Duct Repair & Sealing team treats Cibolo as a home market, not a zip code to hit between San Antonio and Austin.
Why Bellows Air Duct & Vent Co. Is Cibolo’s Preferred Duct Repair & Sealing Company
We’ve served this region for over 42 years, and Cibolo’s transformation from a quiet crossroads to one of America’s fastest-growing cities has given us a front-row seat to what goes wrong when houses go up too fast. Ray Castillo, who leads our company, set the standard early: camera verification on every job, pricing disclosed before work starts, and a 90-Day Done Right Promise that means we return at no charge if something isn’t right, no paperwork, no arguing.
Cibolo homeowners call us back because we pick up the phone. Not an app. Not a voicemail tree. A live person, any hour. Our technicians are background-checked and uniformed, and most repairs are completed in one visit. We’ve built our reputation in this market on being the company you call once, not twice.
Our familiarity with Cibolo’s specific housing stock matters. We know which builders used unsupported flex duct runs that sag over time. We know which subdivisions have return plenums still packed with construction debris from rushed finishing schedules. That local knowledge saves diagnostic time and saves you money.
Our Duct Repair & Sealing Services in Cibolo
Duct Sealing with Mastic Sealant
Cibolo’s combination of near-continuous summer HVAC runtime and flex duct systems that were never properly sealed at the takeoffs creates a perfect storm for air loss. We apply professional-grade mastic sealant, not tape that dries and cracks, to every joint and penetration. In a typical 2,800 square foot Cibolo tract home, this alone can recover 15-25% of conditioned air that’s currently leaking into the attic. We camera-inspect before and after, so you see the difference.
Flex Duct Repair
This is our most common call in Cibolo, and for good reason. The majority of homes here were built during the 2000s and 2010s construction boom, when flex duct was run fast and cheap through attic trusses. Kinks at penetrations, sagging between supports, and crushed sections behind drywall are routine findings. We replace damaged runs with properly sized flex duct, re-hang with support straps at code spacing, and verify airflow balance room by room. In the Reserve at Cibolo Creek subdivision, we sealed a 2015 two-story tract home where the flex duct runs were kinked at roof trusses, causing airflow drops of 30% to the master bedroom. We used mastic sealant on all leaking takeoffs and re-hung the ducts with proper support straps, restoring balanced airflow to the entire zone.
Metal Duct Repair
While most of Cibolo’s housing is newer, we do encounter metal ductwork in the original ranch homes near Old Main Street and in some custom builds. Separated seams, rust at condensate points, and failed duct liner are the usual issues. We fabricate custom patches, re-seal longitudinal seams, and apply encapsulation where liner has degraded. Metal ductwork, when properly repaired, often outlasts the flex systems we see failing across newer subdivisions.
Duct Insulation Repair
Cibolo’s attic temperatures regularly exceed 130°F in August, and every gap in duct insulation is a direct path for heat gain into your conditioned air supply. We repair or replace damaged insulation, paying special attention to attic penetrations and plenum connections where builder crews often left bare spots. Proper insulation repair, combined with sealing, is what makes the difference between a system that runs all afternoon and one that cycles normally.
What happens when you call
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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 Cibolo
We stock parts and specify equipment from Rotobrush, Abatement Technologies, and Aprilaire, the same brands that serious HVAC contractors use when they’re building systems meant to last. For Cibolo homeowners, that means no waiting on special orders for standard repairs. Our trucks carry mastic sealant, proper support strap systems, and insulation wraps sized for the large-footprint homes that dominate this market. When we arrive at your door in a Cibolo subdivision, we’re already equipped for the job, not making a supply run to San Antonio while your attic stays open.
Common Duct Repair & Sealing Problems We See in Cibolo Homes
- Builder-installed flex ducts left kinked at truss penetrations. In Cibolo’s rapid-build environment, crews often pushed flex duct through tight attic spaces without proper support, creating sharp bends that restrict airflow to second-floor rooms by 20-40%. We find this in homes from 2005 and homes from 2018 with equal frequency.
- Return plenums still containing construction debris. Technicians working Cibolo’s newer subdivisions regularly find construction-phase drywall dust and insulation fibers still trapped in return plenums of homes that are only 5-10 years old. This is a direct result of builder-schedule pressure that left ducts open and unsealed during interior finishing work in tract homes that were built and sold within weeks.
- Duct insulation gaps near attic penetrations. The 95-100°F summers typical in Cibolo, combined with attic temperatures that can reach 140°F, mean any bare metal or thin-insulation spot becomes a major thermal loss point. We routinely find insulation pulled back or never fully applied at plenum connections in homes across the 78108 area.
- Active construction dust infiltration from adjacent earthwork. Because new subdivisions continue to break ground in and around Cibolo constantly, existing homes sit adjacent to active earthwork, meaning construction dust and drywall particulate infiltrate duct systems year-round. This problem is far more acute here than in fully built-out neighboring cities like Schertz or Universal City, and it accelerates the need for sealing and cleaning.
Pricing for Duct Repair & Sealing in Cibolo, TX
We’re upfront about numbers because nobody likes a surprise on the invoice. Here’s what duct repair and sealing typically costs in the Cibolo market:
- Basic duct sealing with mastic (single system): $250-$400
- Flex duct repair/replacement (per run): $180-$340
- Metal duct seam repair and patching: $200-$450
- Duct insulation repair (partial, attic-exposed sections): $150-$300
- Full system assessment with camera inspection and written repair plan: $89-$125 (credited toward work if you proceed)
What moves you toward the higher end: multiple kinked or damaged runs, extensive construction debris removal from return plenums, or homes over 3,500 square feet with complex zoned systems. What keeps you at the lower end: targeted sealing of accessible takeoffs, single-run flex repair, or insulation gaps at obvious penetration points. We show you the camera footage and explain every line before we start. Our $50 Off Any Repair Over $250 standing offer applies to most jobs we quote in Cibolo. Call (844) 685-6342 for a free estimate that matches the final invoice.
We Also Serve Cities Near Cibolo
Our service area extends naturally from Cibolo into the surrounding communities we’ve worked in for decades. We regularly drive to Cibolo from our regional routes through Schertz, Universal City, Converse, and Live Oak, and we schedule these jobs to keep response times tight across the entire corridor. Same standards, same upfront pricing, same live-answer phone line.
Serving Cibolo, TX - Our Local Coverage Area
We’re based in the Cibolo 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 Cibolo
Construction debris from rushed builder schedules is still sitting in your return plenum and duct runs. In Cibolo’s fast-build market, crews frequently left ducts open during drywall sanding and insulation work, and that particulate never got cleaned out before you moved in. We camera-inspect the system, remove the debris, and seal the ductwork so new dust doesn’t keep circulating. Call (844) 685-6342 for a free estimate.
Uneven temperatures between rooms, weak airflow at second-floor vents, and higher-than-expected summer electric bills are the three most common signs. We verify with a camera inspection that shows exactly where flex duct has been crushed, kinked at trusses, or left sagging without support. Most flex duct repairs in Cibolo are completed in a single visit. Call (844) 685-6342 to schedule.
Yes, though most of Cibolo’s housing stock is newer flex-duct construction. We repair separated seams, rust damage, and degraded liner in metal ductwork, typically found in original homes near Old Main Street and occasional custom builds. Metal repairs run $200-$450 depending on accessibility and extent. Call (844) 685-6342 for an exact quote.
Yes, absolutely. Cibolo’s position between the San Antonio urban heat sink and the Hill Country means attic temperatures regularly exceed 130°F, and every gap in duct insulation forces your system to work harder to deliver cool air. Insulation repair is often the most cost-effective upgrade we recommend, especially at attic penetrations where builder crews commonly left bare spots. Call (844) 685-6342 for a free assessment.
Most Cibolo homeowners see measurable improvement, typically 10-20% reduction in summer cooling costs when combined with proper insulation repair. The combination of Cibolo’s near-continuous summer HVAC runtime and the high rate of duct leakage in local builder-grade systems means recovered conditioned air translates directly to shorter run times. We camera-verify the sealing work so you know it was done right. Call (844) 685-6342 for an estimate.
Ready to stop fighting with rooms that won’t cool and dust that won’t quit? Call Bellows Air Duct & Vent Co. at (844) 685-6342. We’ll answer live, schedule at your convenience, and show you an honest price before we start. Our 90-Day Done Right Promise means we stand behind the work, no paperwork, no arguing. That’s how we’ve done it for over 42 years.
Written by Ray Castillo, Owner at Bellows Air Duct & Vent Co., serving Cibolo since 1984.