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 typically costs $280-$850 depending on whether we’re sealing accessible joints or rebuilding crushed runs, and most jobs are scheduled within 2-3 business days with a written price delivered before any work starts. Our crews serve Universal City from our San Antonio dispatch office, carrying Rotobrush inspection cameras and Guardsman mastic sealant to homes from the Pat Booker Road corridor to the neighborhoods bordering FM 78. Call (830) 549-6847 for a free estimate with an exact written price.
Universal City’s housing stock tells a story most new residents don’t know yet. The ranch homes and modest two-stories built for Randolph AFB personnel between the 1950s and 1980s have cycled through military tenants on 2-3 year PCS rotations for decades. Ductwork maintenance gets deferred, forgotten, or never transferred between outgoing and incoming families. We’re regularly called to homes where the current resident has lived 18 months and still has no idea when the system was last inspected.
Why CleanRun Air Duct Cleaning New Braunfels Is Universal City’s Preferred Duct Repair & Sealing Company
We’ve served Universal City since 2013 under the H.A.V.E.N. Standard, and our reputation here was built on what we document, not what we claim. Every job starts with a written price and ends with a photo record of every duct run, before and after. Our Duct Repair & Sealing team has photographed the inside of original 1960s sheet-metal trunk lines still paired with later flex-duct add-ons in homes off Pat Booker Road, and we’ve shown those images to the homeowners who had no idea what was hidden above their ceilings.
Our technicians are background-checked, uniformed, and identified by name before arrival, per Haven Standard Clause 3: Verified Crews. We answer calls with a live person, 24/7, and we publish our license number on every page because verifiable credentials matter more than decorative badges. The 365-Day Done Right Promise is backed in writing on every job, not just stated in marketing copy. If the work isn’t right, we make it right.
We also offer a Free Second Opinion on any written estimate from a competitor. Bring us another company’s quote, and we’ll put our number next to it in writing, line item by line item, under Haven Standard Clause 1.
Our Duct Repair & Sealing Services in Universal City
Duct Sealing
Most Universal City homes we inspect have unsealed joints at the plenum and trunk-line connections that leak conditioned air directly into the attic. In a 1970s ranch near Cibolo Valley Road, we measured 22% airflow loss at the main trunk before applying Guardsman mastic sealant to every joint. After sealing, static pressure held steady and the master bedroom, which had been 8 degrees warmer than the thermostat reading, cooled to within 2 degrees. Duct sealing in Universal City typically runs $280-$450 for accessible systems.
Flex Duct Repair
Flex-duct add-ons installed by prior tenants or low-bid contractors collapse, kink, or disconnect entirely. A family that PCS’d into a ranch home near Pat Booker Road 14 months earlier called us because the back bedrooms never cooled evenly; our camera inspection found a crushed flex run over a disconnected metal trunk. After source removal with negative-pressure extraction and HEPA filtration, we rebuilt the joint with mastic sealant and re-insulated the run. Supply and return ducts that had pulled 40+ years of debris now hold static pressure, and the room-to-room temperature split closed up. Flex duct repair in Universal City ranges from $320-$680 depending on accessibility and length of replacement.
Metal Duct Repair
Original sheet-metal trunk lines in Universal City’s older homes corrode at the seams, separate at collars, and accumulate debris that hides the damage until airflow drops sharply. We use Rotobrush inspection cameras to map the full condition of metal runs without cutting into walls, then repair or replace sections using professional-grade tools from Abatement Technologies. Metal duct repair in Universal City typically costs $380-$850, with full trunk-line replacement at the higher end.
Duct Insulation
Attic temperatures in Universal City exceed 130°F in July and August. Uninsulated or degraded duct insulation lets that heat radiate directly into cooled air before it reaches your registers. We replace insulation with materials rated for our climate zone, focusing on the plenum and first 10 feet of trunk line where thermal loss is highest. Duct insulation in Universal City runs $340-$620 for most ranch-style homes.
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
We stock parts and use equipment from Honeywell, Aprilaire, and Rotobrush on Universal City jobs. Honeywell media air cleaners and Aprilaire whole-home humidifiers integrate directly with the duct systems we repair, and our Rotobrush inspection cameras let us show you exactly what we found before we quote any work. We don’t carry generic equipment, and we name our brands so you can verify specifications independently. Parts availability from our San Antonio warehouse means most repairs don’t require a second visit.
Common Duct Repair & Sealing Problems We See in Universal City Homes
- Unsealed joints in original sheet-metal trunk lines. The 1950s-1980s ranch homes off Pat Booker Road and FM 78 were built with metal ducts that were never sealed at the factory joints. Decades of vibration and thermal expansion have opened gaps that leak 15-25% of conditioned air into the attic. Debris accumulation often masks the separation until a camera inspection reveals it.
- Crushed or disconnected flex-duct add-ons. Prior military tenants or their landlords installed flex duct to add registers, close in garages, or redirect airflow. These runs get crushed by storage items in attics, chewed by rodents, or simply detach at the plenum connection. The back bedrooms starve for air while the utility bill climbs.
- Mountain cedar pollen loading combined with summer humidity. San Antonio’s December-February mountain cedar (Ashe juniper) season deposits extreme pollen counts into running HVAC systems. When filters go unchanged between PCS rotations, that pollen layers the duct interior. Summer humidity above 70% turns that debris into a mold substrate. We’ve opened ducts in Universal City homes that smelled musty from the register before we removed the cover.
- Vacant-unit deterioration between tenancies. A home sits empty for 60-90 days between military tenants. The air handler doesn’t run, humidity stagnates, and any existing mold spreads unchecked. The new family moves in, turns on the system, and distributes spores through every room. A baseline inspection at move-in catches this before it becomes a health issue.
Pricing for Duct Repair & Sealing in Universal City, TX
We publish ranges because Haven Standard Clause 1 requires a written price before any work starts, and we don’t use teaser figures that change once we’re on site.
| Service | Typical Range in Universal City |
|---|---|
| Duct sealing (accessible joints, mastic application) | $280-$450 |
| Flex duct repair/replacement (per run) | $320-$680 |
| Metal duct repair (sectional, with camera inspection) | $380-$850 |
| Duct insulation replacement | $340-$620 |
| Full system inspection with photo documentation | $0 (free with any repair) or $149 standalone |
What moves a job toward the higher end: multiple crushed runs requiring attic access, replacement of corroded metal sections, or remediation of mold-contaminated insulation. What keeps it lower: accessible joints, single-run repairs, and systems where the trunk line itself is intact. Every estimate includes the photo record as a standard deliverable. Call (830) 549-6847 for an exact written quote.
We Also Serve Cities Near Universal City
Our crews work throughout the northeast San Antonio corridor, including Duct Repair & Sealing in Universal City and surrounding communities. We also schedule jobs in Schertz, Converse, Cibolo, and San Antonio proper, with the same written pricing and documented photo record on every visit.
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
Because the original sheet-metal trunk lines in 1950s-1980s ranch homes were never sealed at the joints, and decades of vibration have opened gaps that leak 15-25% of conditioned air into the attic. Cleaning removes debris but doesn’t close those gaps; sealing with mastic is what restores static pressure and even airflow. We find this combination in the majority of homes we inspect off Pat Booker Road and FM 78. Call (830) 549-6847 for a camera inspection that shows you exactly what your system needs.
Start with a full camera inspection and written scope, which we provide at no charge when bundled with any repair work or for $149 as a standalone service. Our technician will photograph every duct run, identify any crushed flex, unsealed metal joints, or debris buildup, and deliver a written price for exactly what needs to happen next. For military families new to Universal City, this baseline documentation becomes part of your household file and protects your security deposit at your next PCS. Call (830) 549-6847 to schedule.
Yes. December through February, Ashe juniper pollen counts in this region rank among the highest in North America, and that pollen loads directly into running HVAC systems. In Universal City homes where filters were rarely changed between prior tenants, we’ve measured pollen and debris buildup exceeding 2 inches at the first elbow past the air handler. That restricted airflow combines with summer humidity above 70% to create mold-friendly conditions. Source removal with negative-pressure extraction, followed by sealing any gaps that let attic air infiltrate, is the fix we document on photo record. Call (830) 549-6847 for an inspection before the next cedar season.
We use a Rotobrush inspection camera fed through the register or a temporary access point at the plenum. The camera shows us the interior of every duct run in real time, and we record the footage as part of your documented photo record. In the Pat Booker Road job we referenced earlier, the camera revealed a crushed flex run in 90 seconds; no drywall was removed. This is standard practice on every Universal City inspection we perform. Call (830) 549-6847 to see inside your own ducts.
Yes. Sealing unsealed joints and replacing crushed runs restores the static pressure your system was designed to operate at, which means the air handler doesn’t run longer cycles to compensate for lost airflow. In homes where we’ve sealed original metal trunks and rebuilt damaged flex connections, customers report more even cooling and measurable utility reduction, though exact savings depend on the severity of the pre-existing leaks. The 365-Day Done Right Promise covers our sealing work in writing if performance doesn’t meet the scope we agreed to. Call (830) 549-6847 for a written estimate with projected outcomes.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning New Braunfels, serving Universal City since 2013.