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.
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AfterFast, Reliable Duct Repair & Sealing Across New Braunfels
Duct repair and sealing in New Braunfels typically costs $280-$750 for most residential jobs, with full-system mastic sealing and flex replacement running toward the higher end when river-corridor humidity has degraded multiple runs. Our crews dispatch from the San Antonio office and serve New Braunfels daily, carrying Rotobrush inspection cameras and mastic sealant rated for the Hill Country’s thermal swings. If your supply boots smell musty or your utility bills have climbed without explanation, call (830) 549-6847 - we’ll put a written price in front of you before any panel comes off, and you’ll get the photo record to prove what was inside.
Why CleanRun Air Duct Cleaning New Braunfels Is New Braunfels’s Preferred Duct Repair & Sealing Company
We’ve worked in New Braunfels since 2013, and the pattern is consistent: homeowners here research before they call, and they decide based on what we can show them, not what we claim. Our Duct Repair & Sealing team has documented photo records from over 52,000 homes, every one with a written price agreed before work started.
What separates us in this market is accountability you can verify. Haven Standard Clause 1 requires a written price before any work starts - no exceptions, no “call for a quote.” Clause 3 means background-checked, uniformed technicians identified by name before arrival. Our 365-Day Done Right Promise is backed in writing on every job, not buried in a policy manual. And if you’ve already got a competitor’s estimate, we provide a Free Second Opinion at no cost - our number next to theirs, both in writing.
Dispatch and scheduling are coordinated from our San Antonio office, but crews serve New Braunfels locally every day. That matters when you’re in Veramendi or Forest Ridge and need someone who understands how your slab-on-grade duct layout differs from pier-and-beam construction elsewhere in the metro.
Our Duct Repair & Sealing Services in New Braunfels
Duct Sealing with Mastic Sealant
We seal every joint, boot, and collar with mastic sealant - a thick, fiber-reinforced compound that remains flexible through New Braunfels’s freeze-thaw cycles and 100°F summer afternoons. Tape alone fails here; we’ve peeled failed foil tape off six-month-old joints in Gruene-area attics where attic temperatures hit 140°F. Mastic is slower to apply. It costs more in labor. It also lasts. A typical mastic sealing job for a 2,000-square-foot New Braunfels home runs $340-$520.
Flex Duct Repair & Replacement
Flex duct is common in New Braunfels tract homes from the 2000s forward, and it’s where we find the most hidden damage. The inner liner tears at elbows, the insulation gets waterlogged from condensation, and the wire helix corrodes in river-corridor humidity. We don’t patch flex - we replace the damaged section, verify the new run has proper slope and support, and seal both ends with mastic. Single flex run replacement in New Braunfels typically runs $180-$340; multiple runs or full trunk replacement can reach $680-$950.
Metal Duct Repair
Older homes near historic downtown New Braunfels and along the riverfronts often have galvanized steel ductwork from the 1960s and 70s. The seams rust, the collars separate, and the original asbestos tape crumbles. We repair separations with mechanical fasteners and mastic, replace rusted sections with new galvanized or lined duct, and verify static pressure balance before we leave. Metal duct repair here runs $280-$620 depending on access and extent.
Duct Insulation
Uninsulated or poorly insulated ductwork in New Braunfels attics loses 20-30% of conditioned air before it reaches the register. In river-corridor homes, that temperature differential also creates condensation on the duct exterior, which drips onto ceiling drywall and breeds mold. We install fiberglass duct board or foil-faced insulation with proper vapor barriers, sealed at every seam. Attic duct insulation for a typical New Braunfels home runs $420-$780.
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.
BeforeAfterTrusted Brands We Service in New Braunfels
Our equipment roster includes professional-grade tools from Honeywell, Aprilaire, and Abatement Technologies - brands you can look up independently before agreeing to any work. We stock common fittings and mastic compounds locally, so repairs on standard Honeywell media cabinets or Aprilaire humidifier bypass ducts don’t wait on shipping. For New Braunfels homeowners, that means the crew that diagnoses the problem often finishes it same visit, with parts that match what’s already in your system.
Common Duct Repair & Sealing Problems We See in New Braunfels Homes
- Flex duct sags and traps condensation in river-corridor subdivisions. In Gruene-area developments and homes near Landa Park, flex runs off the air handler sag between supports, creating low points where condensation pools. The inner liner stays wet and grows mold between cleaning cycles. Tape-and-go repairs hide the problem; proper replacement with correct slope and support fixes it.
- Ashe juniper pollen packs into return chases after cedar season. New Braunfels sits in the heart of the mountain cedar belt. December through February, fine pollen infiltrates through every gap in the building envelope and accumulates in ductwork. If a repair only reseals joints without source removal and HEPA negative-pressure extraction, the colony food source stays in place and mold returns within a season.
- Mid-century downtown ductwork is undersized for modern humidity loads. Homes near the historic district and riverfronts often have original ductwork designed for heating-only systems. Add central air conditioning fighting 100°F+ heat and river-corridor humidity, and the velocity is wrong, the static pressure is wrong, and new joints fail at the same collars within a year. Repair without resizing is temporary.
- Construction debris contaminates ducts in newer subdivisions. Veramendi, Forest Ridge, and similar 2015-2023 builds frequently contain drywall dust, insulation scraps, and sawdust from rough construction that was never properly cleaned. This debris restricts airflow, abrades flex duct interiors, and provides substrate for microbial growth once humidity enters the system.
Pricing for Duct Repair & Sealing in New Braunfels, TX
Here’s what duct repair and sealing actually costs in the New Braunfels market:
| Service | Typical Range |
|---|---|
| Mastic sealing (full system, up to 12 joints/boots) | $340-$520 |
| Single flex duct run replacement | $180-$340 |
| Multiple flex runs or partial trunk | $680-$950 |
| Metal duct repair (rust, separations, collar replacement) | $280-$620 |
| Attic duct insulation (typical 2,000 sq ft home) | $420-$780 |
| Camera inspection with written scope | $0 (included with repair estimate) |
These are whole-system prices, not per-vent teaser rates that balloon once the truck arrives. Every estimate is free, written, and delivered before any work starts - Haven Standard Clause 1. Factors that move you within these ranges: attic access difficulty, extent of moisture damage, whether asbestos-containing materials are present in pre-1980 homes, and whether static pressure testing reveals undersized ductwork requiring modification.
Call (830) 549-6847 for an exact quote on your home - estimates are free, and you’ll have our number in writing before we touch a panel.
We Also Serve Cities Near New Braunfels
Our crews work throughout the I-35 corridor and Hill Country, including Duct Repair & Sealing in New Braunfels plus Seguin, Cibolo, Schertz, and Canyon Lake. The river-corridor humidity pattern we describe for New Braunfels is less pronounced in Canyon Lake’s drier microclimate, but the cedar pollen load is similar across all these markets.
Serving New Braunfels, TX - Our Local Coverage Area
We’re based in the New Braunfels 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 New Braunfels
Yes. Properties within a few blocks of Landa Park and the Comal River springs run their AC almost year-round against river-generated moisture, and our technicians frequently find mold colonies in supply boots and flex duct in these homes even in relatively new construction. This pattern doesn’t show up the same way in comparable homes just a few miles inland toward Canyon Lake, where drier Hill Country air limits condensation buildup. If you’re in the river corridor, mastic-sealed boots and properly supported flex are essential, not optional. Call (830) 549-6847 for an inspection with photo documentation.
No. Fogging deposits chemical on surfaces but does not remove the physical mold colony or the organic debris it feeds on. NADCA standards require source removal - mechanical agitation and negative-pressure extraction - for visible microbial contamination. In New Braunfels’s humid river-corridor environment, fogging without removal guarantees regrowth within one cooling season. We photograph the contamination, remove it with Rotobrush mechanical contact and HEPA-contained extraction, then repair the moisture source that allowed it to grow. The photo record shows you the difference. Call (830) 549-6847 for a written scope that specifies source removal, not fogging.
The Ashe juniper pollen that blankets New Braunfels from December through February is fine enough to infiltrate through separated duct joints, unsealed boots, and damaged flex. If your ducts are intact, cleaning with source removal is sufficient. But if inspection shows separated collars, torn flex, or failed tape, the pollen will re-enter within weeks of cleaning. Cedar season is when many homeowners discover their “cleaning” was temporary because the underlying leaks were never addressed. We check every joint during our pre-cleaning inspection and flag repairs that would make cleaning a waste of your money. Call (830) 549-6847 for an estimate that tells you which you actually need.
New Braunfels’s rapid growth means many homes in Veramendi, Forest Ridge, and similar subdivisions were built during the 2020-2023 construction surge, when speed often trumped precision in HVAC installation. We’ve found unsealed boots, flex duct crushed behind drywall, and tape joints that failed within the first two years. Construction-phase debris - drywall dust, insulation scraps, sawdust - frequently remains in the system, abrading flex interiors and restricting airflow. The 365-Day Done Right Promise covers our repairs, but the original builder’s warranty typically doesn’t cover ductwork after the first year. If your home is under ten years old and your bills are climbing, the ducts are worth inspecting. Call (830) 549-6847 for a free estimate with photo documentation.
NADCA Standard 2021 requires mechanical source removal of visible contamination before any sealing work, containment of the work area under negative pressure, and post-cleaning verification through visual inspection or photography. For New Braunfels homes with river-corridor humidity damage, this means we cannot ethically seal over mold or moisture - we must remove it, verify the removal photographically, repair the moisture source, then seal. Haven Standard Clause 2 (Documented Photo Record) exceeds NADCA minimums by delivering before-and-after images of every duct run as a standard deliverable, not an option. Ask any competitor if their “sealing” includes source removal and photographic verification before mastic application. Call (830) 549-6847 for an estimate that specifies NADCA-compliant scope in writing.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning New Braunfels, serving New Braunfels since 2013.