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 Universal City
Duct repair and sealing in Universal City, TX typically runs $280-$650 for most homes, with flex duct replacement and full-system mastic sealing at the higher end. We dispatch crews from our San Antonio office and schedule Universal City jobs with arrival windows that respect your time, not vague “sometime between 8 and 5” windows. Call (830) 402-5110 for a written estimate before any work starts.
We’ve worked on enough Universal City homes to know the local patterns. The 1960s-1980s ranch stock near Kitty Hawk Road and the Garden Ridge area carries original ductwork that was never designed for the cooling loads South Central Texas demands today. The caliche dust from local soils, combined with 8-9 months of continuous AC operation, grinds away at flex duct joints and mastic seals that were already past their service life. Our Duct Repair & Sealing team documents every run with before-and-after photography so you see what was actually done, not just what you were told.
Why CleanRun Air Duct Cleaning Schertz Is Universal City’s Preferred Duct Repair & Sealing Company
CleanRun has held the same practice since 2013: written price before work starts, documented photo record when we leave, and the 365-Day Done Right Promise backed in writing on every job. In Universal City, that means something specific. We’ve repaired ductwork in the neighborhoods off Pat Booker Road, along Universal City Boulevard, and in the older subdivisions near the Randolph AFB perimeter where the housing stock and contamination patterns differ from anything you’ll find in Schertz or Converse.
Our technicians are background-checked, uniformed, and identified by name before arrival under Haven Standard Clause 3: Verified Crews. We don’t send subcontractors or day laborers into your home. The equipment on every truck includes Rotobrush and Nikro systems for camera inspection and negative-pressure extraction, plus Guardsman-grade mastic and sealants rated for the heat and humidity cycles that destroy consumer-grade products.
Every call is answered by a live person, 24/7. Scheduling for Universal City is coordinated from our San Antonio office with route planning that keeps drive time predictable. We don’t charge a “travel fee” for Universal City calls. The price we write is the price you pay.
We also offer a Free Second Opinion on any written estimate. Bring a competitor’s quote; we put our number next to it in writing, with line-item scope, so you can compare actual deliverables.
Our Duct Repair & Sealing Services in Universal City
Duct Sealing
Air leaks in Universal City duct systems waste 20-30% of conditioned air on average, according to Department of Energy estimates we’ve validated in local homes. The combination of aging mastic, thermal expansion from 8-9 months of cooling operation, and vibration from blower motors running harder than design spec opens gaps at plenum collars, register boots, and flex duct connections. We seal accessible leaks with Guardsman mastic sealant and foil-backed tape rated for 200°F continuous exposure, then pressure-test to verify results. A typical duct sealing job in Universal City runs $280-$450 for a single-system home.
Flex Duct Repair
Universal City’s flex duct failures follow a pattern we see nowhere else in the metro. The original 1960s-1980s installations used thinner mylar jackets and wire helixes that UV-degrade in attics reaching 140°F in July and August. Tape repairs fail within one cooling season here; the adhesive releases, the tape curls, and you’re back to blowing conditioned air into your attic. We replace degraded sections with R-6 or R-8 flex duct (matching or exceeding original spec) and secure with mechanical clamps plus mastic, never tape alone. Flex duct repair in Universal City typically costs $180-$340 per run, with full replacement of multiple runs reaching $520-$780.
Metal Duct Repair
Galvanized steel ductwork in older Universal City homes corrodes at seams and joints where condensation forms against uninsulated surfaces. The caliche dust that infiltrates through filter gaps acts as an abrasive, accelerating wear at elbows and transitions. We repair separated seams with sheet metal screws and mastic sealant, replace rusted sections with matching gauge material, and insulate where condensation is recurring. Metal duct repair in Universal City runs $320-$580 depending on accessibility and extent of replacement.
Duct Insulation
Missing or degraded insulation on duct runs in Universal City attics creates two problems: condensation that drips through ceiling drywall, and thermal loss that forces your blower motor to run longer cycles. We install fiberglass duct wrap with vapor barrier (R-6 minimum, R-8 where space allows) and seal all seams with pressure-sensitive tape. For homes near the JBSA-Randolph flight line, proper insulation also reduces the infiltration path for fine particulates that bypass filters through unsealed access points. Duct insulation in Universal City typically runs $340-$620 for a complete single-system attic.
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 Universal City
Our trucks carry professional-grade equipment from trade-recognized brands: Rotobrush for camera inspection and mechanical agitation, Nikro for negative-pressure extraction, Honeywell media filters and electronic air cleaners, and Guardsman mastic and sealant products. We don’t use consumer-grade shop vacs or untested “proprietary” chemicals. Every brand we name can be independently verified, and we stock common repair parts so Universal City jobs aren’t delayed waiting for shipments. If your system uses Aprilaire media filters or Abatement Technologies HEPA equipment, we service and replace those components as part of our standard scope.
Common Duct Repair & Sealing Problems We See in Universal City Homes
- Flex duct repairs that fail within one season. Crews tape over UV-degraded cracks instead of replacing the damaged section. Universal City’s heat and humidity cause adhesive release before the first cooling season ends. We see this most often in rental properties with rapid PCS turnover, where previous “repairs” were never inspected.
- Missing mastic at the air handler plenum. Degraded or never-applied sealant at this critical junction lets caliche dust and jet-exhaust particulates bypass the filter entirely. The blower motor clogs, coils coat with debris, and supply registers show the darkened staining characteristic of homes near the JBSA-Randolph flight line.
- Disconnected return runs in rental properties. Rapid tenant turnover means no one checks whether the return duct is actually connected to the system. Sealing supply leaks without a camera inspection traps debris and leaves hidden return leaks pulling unconditioned attic air into the system.
- Fogging “sanitizers” sold as microbial fixes. These products mask odor without addressing the moisture source that feeds growth in duct insulation. The wet insulation and dust remain; regrowth follows within weeks. We document moisture sources with camera inspection and recommend repair or replacement, not chemical masking.
Pricing for Duct Repair & Sealing in Universal City, TX
We publish ranges because Haven Standard Clause 1 requires a written price before work starts, every time. These are actual Universal City market ranges based on jobs completed in the last 18 months:
| Service | Typical Range in Universal City |
|---|---|
| Duct sealing (single system, accessible attic) | $280-$450 |
| Flex duct repair (per run, replace degraded section) | $180-$340 |
| Flex duct replacement (multiple runs) | $520-$780 |
| Metal duct repair (seam/joint repair, partial replacement) | $320-$580 |
| Duct insulation (single system attic, R-6 to R-8) | $340-$620 |
| Camera inspection with written report and photo record | $95-$145 (credited toward repair if scheduled) |
Factors that move a job toward the higher end: attic accessibility (blown insulation, tight truss spacing), extent of UV degradation in flex duct, corrosion depth in metal duct, and whether multiple systems serve the home. The price we write includes all labor, materials, the documented photo record, and the 365-Day Done Right Promise. No per-vent add-ons. No “surprise” findings after work begins. Call (830) 402-5110 for an exact quote; estimates are free.
We Also Serve Cities Near Universal City
Our crews work throughout the northeast San Antonio metro, including Universal City, Schertz, Converse, Cibolo, and San Antonio proper. Scheduling and dispatch are coordinated from our San Antonio office with route optimization that keeps arrival times predictable across the service area. The same written-price-first policy, documented photo record, and Haven Standard protections apply to every city we serve.
Serving Universal City, TX - Our Local Coverage Area
We’re based in the Universal City 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 Universal City
Jet turbine exhaust particulates from military aircraft operations infiltrate duct systems through leaks and filter gaps, depositing fine carbon-based residue on supply registers and interior duct surfaces. This pattern is essentially absent in Schertz and Converse neighborhoods just a few miles away. The contamination is recognizable on sight by technicians familiar with the area. Camera inspection confirms the extent; sealing leaks and upgrading filtration addresses the source. Call (830) 402-5110 for an inspection and written scope.
Sealing is worth it when the ductwork is structurally intact and accessible; replacement is indicated when flex duct is UV-degraded throughout, metal duct shows corrosion at multiple seams, or insulation is saturated with moisture. We assess with camera inspection and deliver a written comparison of both options with line-item pricing. Many 1970s Universal City ranches benefit from targeted sealing and partial flex replacement, avoiding the $2,800-$4,500 cost of full duct replacement. The written estimate shows both paths so you decide based on actual numbers.
No. Fogging masks odor chemically but leaves the moisture source, wet insulation, and organic debris that feed microbial regrowth. In Universal City’s humidity, regrowth typically follows within 4-8 weeks. We use camera inspection to locate moisture intrusion points, repair or replace wet duct insulation, and seal the source. The photo record shows what was removed and what remains. The 365-Day Done Right Promise covers our work; fogging carries no comparable accountability.
Every tenant turnover, or at minimum every 24 months. The PCS cycle means many Universal City rentals see 3-5 tenants in a decade with no duct service between moves. Accumulated debris from previous occupants degrades air quality for incoming families and accelerates wear on blower motors and coils. We offer property managers a documented photo record for each turnover, with written scope and pricing delivered before work starts. Call (830) 402-5110 for multi-unit scheduling.
MERV 11-13 for most Universal City homes, with MERV 13 recommended for properties near the JBSA-Randolph flight line to capture finer particulates. Higher ratings require verifying your blower motor can handle the static pressure drop; we check this during repair and note the compatible range on your written job record. We stock Honeywell and Aprilaire media filters in common sizes and can source others without delaying your job. The filter recommendation is part of every repair scope we deliver.
Schedule Your Universal City Duct Repair & Sealing
Call (830) 402-5110 to speak with a live person and schedule your free estimate. We’ll deliver a written price before any work starts, complete the job with a documented photo record of every duct run, and back it with the 365-Day Done Right Promise. No per-vent pricing. No fogging upsells. Just documented, accountable work.
Written by Tomas Reyes, Owner at CleanRun Duct Repair & Cleaning, serving Universal City since 2013.
Duct Repair & Sealing in Nearby Areas
