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 Cibolo
Duct repair and sealing in Cibolo typically runs $280-$650 for most homes, with flex-duct joint repairs and mastic sealing on a single zone falling at the lower end and full-system metal duct restoration or insulation replacement reaching the higher end. Our crews are dispatched from the San Antonio office and cover Cibolo neighborhoods including Turning Stone, Cibolo Valley, and the subdivisions along FM 1103 with same-week scheduling. Call (726) 600-7155 and we’ll put a written price in your hands before any panel comes off.
We’ve been working in Cibolo long enough to know what the production builders left behind. The tract homes built during the 2000s and 2010s boom, the ones filling neighborhoods off Cibolo Valley Drive and Schaefer Road, weren’t handed over with clean ducts. Drywall dust, sawdust, and blown-insulation particulate from the original build cycle is still sitting in those supply and return runs. And the Blackland Prairie clay underneath those slab-on-grade foundations hasn’t stopped moving since the concrete cured. That soil movement pulls flex-duct joints apart in unconditioned attics, a breach that looks normal from the outside but bleeds 100°F+ attic air and loose insulation fibers into your supply side every time the blower kicks on. Our Duct Repair & Sealing team finds this exact failure pattern weekly in Cibolo.
Why CleanRun Air Duct Cleaning San Antonio Is Cibolo’s Preferred Duct Repair & Sealing Company
CleanRun has held the Haven Standard since 2013, and that means documented evidence on every job, not promises. In Cibolo specifically, we’ve photographed the inside of thousands of duct runs in production-built homes, and we’ve built a record of what that construction debris actually looks like after sitting for five, ten, or fifteen years. Homeowners in Turning Stone, Thistle Creek, and the neighborhoods north of FM 78 know our crews by the uniform and the camera, not by a sales pitch.
Our technicians are background-checked and identified by name before arrival, per Haven Standard Clause 3: Verified Crews. Every job starts with a written price and ends with a Documented Photo Record of every duct run, delivered as part of the standard job record. The 365-Day Done Right Promise applies in Cibolo exactly as it does everywhere else, backed in writing, not subject to manager approval. If the work isn’t right, we make it right.
Dispatch and scheduling are coordinated from our San Antonio office, but the crews serving Cibolo are the same technicians who’ve learned to spot the specific flex-duct separation pattern that clay soil movement produces here. They carry Rotobrush and Nikro equipment, stock mastic sealant and collar hardware sized for the flex-duct runs common in Cibolo’s post-2000 housing stock, and they know to check the first elbow after the plenum, the main distribution point where air enters the duct system, because that’s where the separation usually starts.
Our Duct Repair & Sealing Services in Cibolo
Duct Sealing with Mastic Sealant
Mastic sealant is a thick, fiber-reinforced compound brushed onto duct joints and seams, then left to cure into a permanent, flexible seal. In Cibolo’s climate, where attics exceed 130°F in July and August, tape adhesives fail predictably. Mastic doesn’t. We apply it to every collar, splice, and penetration point on flex and metal duct alike. On a typical Cibolo home with a single zoned system, mastic sealing of accessible attic runs runs $280-$420, written before we climb the ladder.
Flex Duct Repair
Flex duct, the insulated flexible tubing that carries conditioned air from the plenum to each room, is the standard in Cibolo’s production-built homes. It’s also the component most vulnerable to the foundation movement that comes with Blackland Prairie clay. We replace collapsed, crushed, or separated flex-duct runs with new R-6 or R-8 insulated flex, sized to match the original CFM rating, the airflow capacity the system was designed for. A single run replacement in Cibolo typically costs $180-$340; partial system replacement with multiple runs runs $450-$780. We photograph the damage before touching it and the completed repair before we leave.
Metal Duct Repair
Older Cibolo homes and any with commercial-style trunk-and-branch designs use galvanized steel ductwork. Rust-through, seam separation, and damper failure are the usual issues we find. We patch or replace sections using sheet metal and sealed rivets, not tape. Metal duct repair in Cibolo starts around $320 for localized patchwork and runs to $890 for extensive trunk line restoration. Every repair is photographed and included in the Documented Photo Record.
Duct Insulation Replacement
The fiberglass insulation jacketing flex duct degrades in Cibolo’s attic heat, compressing and losing its R-value, the thermal resistance that keeps conditioned air cool. We strip degraded insulation and re-wrap with new R-6 or R-8 fiberglass, sealed with vapor-barrier jacketing. Full insulation replacement on a typical Cibolo system runs $520-$840, depending on linear footage and attic accessibility.
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 Cibolo
Our equipment roster includes Rotobrush rotary brush systems for mechanical agitation inside duct runs, Nikro negative-air machines for containment during repair work, and Honeywell and Aprilaire components for damper and zoning hardware replacement. We don’t claim these tools perform miracles. We name them so Cibolo homeowners can look up the specifications independently and know what they’re paying for. Parts for common Cibolo systems are stocked locally, so most repairs don’t wait on shipping. If your home has a Honeywell zone panel or Aprilaire media air cleaner integrated with the duct system, we service those components as part of the repair scope, not as an add-on.
Common Duct Repair & Sealing Problems We See in Cibolo Homes
- Construction debris still sitting in “new” homes. Production builders in Cibolo’s 2000s and 2010s boom cycles rarely cleaned ducts before handover. Drywall dust, sawdust, and blown-insulation particulate remains in supply and return runs, sometimes for decades, until a new owner finally has the system inspected. The debris doesn’t just reduce airflow; it abrades flex-duct liner and loads the blower motor.
- Clay soil movement pulling flex-duct joints apart. Cibolo’s Blackland Prairie expansive clay shrinks and swells with moisture changes, translating that movement through slab-on-grade foundations into the framing above. Attic flex-duct joints, especially at the first elbow after the plenum, separate gradually. The gap looks like a normal joint from the outside. A camera inspection reveals insulation fibers being sucked into the supply side every time the blower runs.
- Pollen and biofilm loading from extended AC seasons. Cibolo’s position in the Ashe juniper belt means HVAC systems pull enormous pollen loads during Cedar Fever season, December through February. Six-plus months of continuous AC operation in South Texas humidity creates condensate conditions inside ductwork favorable for mold and biofilm growth, particularly at leak points where unconditioned attic air meets cooled supply air.
- Stacked debris from rapid home turnover. Military families rotating through JBSA-Randolph PCS orders mean Cibolo homes change hands every 2-3 years. Duct cleaning almost never happens between owners. Each new family adds another layer of skin cells, pet dander, and cooking particulate to the original construction debris. By the third or fourth owner, the supply runs are packed to the elbow.
Pricing for Duct Repair & Sealing in Cibolo, TX
Here’s what duct repair and sealing actually costs in Cibolo’s market, based on jobs we’ve written prices for in the past eighteen months:
| Service | Typical Range in Cibolo |
|---|---|
| Mastic sealant application (single zone, accessible attic) | $280-$420 |
| Single flex-duct run replacement | $180-$340 |
| Partial flex-duct system replacement (3-5 runs) | $450-$780 |
| Metal duct patch/repair (localized) | $320-$520 |
| Metal trunk line restoration (extensive) | $620-$890 |
| Duct insulation replacement (full system) | $520-$840 |
| Camera inspection with written report and photos | $145-$195 |
These are whole-system or whole-job prices, not per-vent teaser rates. The exact figure depends on linear footage, attic accessibility, and whether we find additional separation points once we’re inside. We deliver the written price before any work starts, every time, under Haven Standard Clause 1. No exceptions. Bring a competitor’s written estimate and we’ll provide a Free Second Opinion, our number next to theirs.
Homes in Cibolo’s older subdivisions like Turning Stone or the original Cibolo Valley sections sometimes need more extensive work than newer builds, not less. The clay has had longer to move, and the original construction debris has had longer to compact into blockages. We price for what we find, not what we hope to sell.
We Also Serve Cities Near Cibolo
Our crews regularly work in Schertz, Universal City, Converse, and Bulverde, the surrounding communities that share Cibolo’s clay soil conditions and production-builder housing stock. The same documented process, written pricing, and photo record applies in every city we serve.
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
Yes, and probably more urgently than an older home. Production builders in Cibolo rarely cleaned ducts before handover during the 2000s-2020s development boom. Drywall dust, sawdust, and blown-insulation particulate from the original build cycle remains in your supply and return runs, compacting with each season of airflow. We’ve photographed 3-inch debris build-ups at the first elbow in homes less than two years old. Call (726) 600-7155 for a camera inspection and written price - estimates are free.
Blackland Prairie expansive clay soil causes continuous foundation movement in Cibolo’s slab-on-grade homes, and that movement transmits through framing into attic flex-duct joints. The separation is gradual, often invisible from the attic floor, and it pulls loose insulation fibers into your supply side. Mastic sealant alone won’t fix it if the run has stretched beyond its reach; the joint needs reconnection with proper support strapping. We see this exact pattern on Cibolo Valley Drive and in Turning Stone regularly. Call (726) 600-7155 and we’ll show you the camera footage.
It does. Cibolo’s position in the Ashe juniper belt means your HVAC system pulls enormous pollen loads from December through February, and any leak in your ductwork is an entry point for that pollen to bypass your filter entirely. A properly sealed duct system with intact mastic joints forces all intake air through the filter media. If you’re still symptomatic indoors during peak season despite a fresh filter, you likely have a supply-side leak. Call (726) 600-7155 for a pressure test and written repair scope.
The tell is usually a utility bill that climbs without thermostat changes, combined with dust re-depositing on registers right after cleaning. A camera inspection shows the difference immediately: a cleaning need looks like debris build-up on duct walls, while a leak shows insulation fibers being drawn into the airflow stream at a joint or separation point. We perform both camera inspection and pressure testing, deliver the photos, and write a price for exactly what the evidence shows. Call (726) 600-7155 to schedule.
Yes, strongly. Cibolo’s rental inventory turns over every 2-3 years with JBSA-Randolph PCS orders, and duct cleaning almost never happens between tenants. You’re likely inheriting debris from the original construction plus every previous occupant. A camera inspection costs $145-$195, delivers documented photos of what you’re actually breathing, and gives you written evidence to present to your property manager if repair is needed. Call (726) 600-7155 before you unpack the household goods.
Ready for a written price and documented results? Call CleanRun Air Duct Cleaning San Antonio at (726) 600-7155. We’ll schedule your Cibolo appointment, deliver a written price before any work starts, and leave you with a Documented Photo Record of every duct run we touched. The 365-Day Done Right Promise applies in full. Haven Standard Clause 1: Written Price Before Work. Every time.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning San Antonio, serving Cibolo since 2013.