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.
Fast, Reliable Duct Repair & Sealing Across Bulverde
Duct repair and sealing in Bulverde typically costs $280-$680 for most single-family homes, with flex duct repair running $180-$420 per run and full-system mastic sealing ranging from $450-$890 depending on system size. We dispatch crews to Bulverde from our Dallas-Fort Worth coordination office, and most Bulverde appointments are scheduled within 3-5 business days. Call (830) 549-6847 for a written estimate before any work begins.
We’re familiar with the specific ductwork conditions that develop in Bulverde’s newer master-planned communities. The large-footprint homes going up in Copper Canyon, Ventana, and the Spring Branch-area subdivisions since the mid-2000s carry a particular set of problems: attic flex ducts that were kinked during rushed builder installs, mastic sealant that failed before the first homeowner finished unpacking, and construction debris that never got extracted before the certificate of occupancy was signed. Our Duct Repair & Sealing team has worked these floor plans repeatedly. We know where the weak points typically form.
Why CleanRun Air Duct Cleaning New Braunfels Is Bulverde’s Preferred Duct Repair & Sealing Company
We’ve served the Bulverde market since expanding our Hill Country operations, and the majority of our calls here come from homeowners in the 2,500-4,500 sq ft new-construction bracket who found us after a bad experience with a coupon cleaner or a builder who wouldn’t return calls about “dust problems.” Our reputation in Bulverde is built on documentation: every duct run photographed before and after, every price written and signed before a panel comes off, every technician background-checked and named before arrival under Haven Standard Clause 3: Verified Crews.
Response time to Bulverde runs 3-5 business days for standard scheduling, which is appropriate for the diagnostic and repair work we perform. This isn’t a rush job. We need time to run cameras, identify kinked flex runs, and calculate material needs for mastic sealing or insulation repair. Dispatch is coordinated from our Dallas-Fort Worth office, but the crew that arrives at your Bulverde home knows the local conditions: the cedar pollen load that hits in December through February, the caliche dust that rises from active development sites and unpaved ranch roads, the way limestone geology around the Edwards Plateau generates fine rock particulate that standard return filters don’t catch.
Our 365-Day Done Right Promise applies to every Bulverde job in writing. If the repair fails, if a seal opens, if airflow doesn’t test to the spec we documented, we return and make it right. No manager approval required. The promise is printed on the same job record that carries your before-and-after photo set.
Our Duct Repair & Sealing Services in Bulverde

Duct Sealing
We seal duct joints, plenum connections, and register boots with professional-grade mastic sealant, not tape that dries and cracks in Bulverde’s attic heat. A typical full-system seal in a 3,000 sq ft Bulverde home runs $450-$890. The work includes pressure-testing before and after to document improvement. In homes near active construction on Bulverde’s expanding perimeter, proper sealing is what keeps caliche dust and cedar pollen from infiltrating through gaps and coating the blower motor.

Flex Duct Repair
Bulverde’s dominant housing stock relies heavily on attic flex duct, and we’ve replaced or repaired thousands of feet of it in this market. Kinked runs from rushed builder installs are the most common failure we see in Copper Canyon and Ventana. Repair of a single compromised flex run typically runs $180-$340; replacement of a full attic trunk line can reach $420-$680. We support new runs properly, eliminate low spots where pollen and dust collect, and photograph every connection before closing the attic.

Metal Duct Repair
Older homes near Spring Branch Road and the original Bulverde settlement area sometimes retain galvanized metal ductwork from pre-2000 builds. We repair separated seams, corroded sections, and failed dampers. Metal repair in Bulverde typically falls between $220-$480 depending on accessibility and extent of corrosion from years of humidity cycling in Hill Country attics.

Duct Insulation
Attic temperatures in Bulverde routinely exceed 130°F in July and August. Damaged or missing insulation on flex ducts forces your HVAC to fight heat gain before conditioned air ever reaches the register. Reinsulation of exposed attic runs runs $280-$560 for most Bulverde homes, using materials rated for the temperature extremes this market sees.

Air Leak Repair
We locate and repair return-air leaks that pull unfiltered attic air into the system. In Bulverde, this matters more than in most markets because of the particle load: cedar pollen, caliche dust, and rock fines from limestone geology. A return leak in a Bulverde attic isn’t just an efficiency problem. It’s a contamination pathway. Typical air leak repair runs $150-$320 per location identified.

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.
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AfterTrusted Brands We Service in Bulverde
Our equipment roster includes Honeywell airflow measurement tools, Aprilaire media filtration systems, and Abatement Technologies HEPA negative-air machines. We don’t use equipment we can’t name and you can’t look up. For Bulverde homes with integrated air quality components, we stock common Honeywell and Aprilaire parts to avoid delay on repair visits. Guardsman protective materials keep your floors and finishes clean while we work. Every tool is cleaned and inspected between jobs under Haven Standard Clause 2: Documented Equipment Protocol.
Common Duct Repair & Sealing Problems We See in Bulverde Homes

- Kinked flex ducts from builder installs. In Copper Canyon, Ventana, and newer Spring Branch-area subdivisions, we regularly find attic flex ducts that were never properly supported during construction. The low spots trap cedar pollen and caliche dust, restrict airflow to distant rooms, and create noise from flapping liner. The camera shows the restriction before we touch anything.
- Failed mastic sealant at air handler connections. Heat cycling in Bulverde’s 12-16 hour summer run times dries and cracks builder-grade sealant within 3-5 years. We remove the old material and reseal with rated product that flexes with temperature change.
- Return-air leaks pulling attic contamination. Gaps between the return plenum and drywall, or between duct sections in the attic, draw unfiltered air loaded with Hill Country particulate. We pressure-test to find them, then seal and document the before-and-after differential.
- Construction debris accumulation in never-cleaned systems. Homes built 2015-2022 in Bulverde’s master-planned communities often have drywall dust, blown-insulation fibers, and trade debris still sitting in the first elbow from original construction. The homeowner moved in, the HVAC ran, and nobody ever extracted it.
Pricing for Duct Repair & Sealing in Bulverde, TX
We publish ranges because Haven Standard Clause 1 requires a written price before work starts, every time. Here is what duct repair and sealing typically costs in the Bulverde market:
| Service | Typical Range |
|---|---|
| Single flex duct repair | $180 - $340 |
| Flex duct replacement (per run) | $280 - $420 |
| Full-system mastic sealing | $450 - $890 |
| Metal duct repair (per section) | $220 - $480 |
| Duct reinsulation (attic runs) | $280 - $560 |
| Air leak repair (per location) | $150 - $320 |
System size matters: a 4,500 sq ft home in Ventana with 20+ duct runs requires more material and labor than a 2,500 sq ft plan in Copper Canyon. Accessibility matters: tight truss attics take longer. We assess these factors during our initial inspection, deliver a written scope and price, and wait for your approval before beginning. No exceptions. Estimates are free. Call (830) 549-6847.
We Also Serve Cities Near Bulverde

Our crews work throughout the Hill Country and I-35 corridor, including Duct Repair & Sealing in Bulverde proper plus Canyon Lake, Schertz, Universal City, and Cibolo. Scheduling and dispatch are coordinated from our Dallas-Fort Worth office. Each market gets the same documented photo record, written pricing, and 365-Day Done Right Promise.
Serving Bulverde, TX - Our Local Coverage Area
We’re based in the Bulverde 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 Bulverde

It forces significantly more particulate into your return system than in San Antonio or New Braunfels. The December-February pollen events are dense enough to visibly cloud the air, and the ultra-fine particles pass through standard filters, coating duct interiors and accumulating in low spots of kinked flex runs. We recommend inspection and cleaning after each cedar season, with sealing to close infiltration pathways. Call (830) 549-6847 to schedule.
Probably, yes. The dominant housing stock in Bulverde-large new-construction single-family homes built 2015-2022-frequently contains drywall dust, insulation fibers, and trade debris from overlapping construction work that was never extracted before move-in. We’ve documented 3-inch debris build-ups at first elbows in homes less than five years old. The camera doesn’t lie about what the builder left behind.
Uneven temperatures between rooms, excessive dust accumulation on surfaces, whistling or flapping noises from ceiling registers, and unexpectedly high summer electric bills are the four most common indicators. In Bulverde specifically, these symptoms often trace to kinked or undersupported attic flex from the original builder install, trapping cedar pollen and caliche dust in low spots that restrict airflow. We verify with camera inspection before recommending repair.
Every 3-5 years for standard maintenance, with inspection after each cedar pollen season if anyone in the home has respiratory sensitivity. The combination of Hill Country pollen load, caliche dust from active development, and 12-16 hour summer HVAC run times means Bulverde systems accumulate debris faster than equivalent homes in less challenging climates. Sealing should be verified every 5-7 years or after any rodent activity in the attic.
Yes, significantly. Caliche dust from limestone geology and active construction sites enters through leaks in the return path, not through the supply. Sealing return plenum connections, duct joints, and register boots with mastic closes the infiltration pathways. We pressure-test to verify. A well-sealed system in Bulverde runs cleaner and more efficiently than one relying on filter capture alone. For a written estimate on sealing your specific system, call (830) 549-6847.
Ready to see what’s actually inside your ducts? We answer calls live, 24/7. A background-checked, uniformed technician will arrive at your Bulverde home with a camera, deliver a written price before any work starts, and leave you with a documented photo record of every duct run. The 365-Day Done Right Promise applies in writing. Call CleanRun Air Duct Cleaning New Braunfels at (830) 549-6847.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning New Braunfels, serving Bulverde since expanding Hill Country operations in 2013.




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