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 Schertz
Most duct repair and sealing jobs in Schertz run between $280 and $650 for standard residential work, with full-system resealing on larger homes reaching $900-$1,400. Our crews dispatch from the San Antonio office and typically schedule Schertz appointments within 2-4 business days, with written estimates delivered before any panel comes off. Call (726) 600-7155 to book a free inspection.
We’ve worked Schertz long enough to know the difference between a home near the Randolph Metrocom corridor and one out by FM 3009. The housing stock, the soil, the pollen load - it all changes what we find when we open the attic hatch. Our Duct Repair & Sealing team treats Schertz as its own market, not a suburb afterthought.
Why CleanRun Air Duct Cleaning San Antonio Is Schertz’s Preferred Duct Repair & Sealing Company
CleanRun has been independently owned and operated under the Haven Standard since 2013. We’ve served more than 52,000 homes, every one with a written price before work started and a documented photo record when the crew left. That practice hasn’t changed.
In Schertz specifically, we’ve built our reputation on showing rather than telling. Our technicians carry tablets with before-and-after photos from previous jobs in neighborhoods like The Crossvine and Fairways at Scenic Hills. Homeowners there recognize the caliche dust patterns we photograph - the fine, powdery limestone soil native to Guadalupe County that coats return plenums when attic insulation is blown over poorly sealed boots.
Every technician is background-checked, uniformed, and identified by name before arrival - Haven Standard Clause 3: Verified Crews. The 365-Day Done Right Promise is backed in writing on every job, not just stated in marketing copy. And we publish our equipment brands - Rotobrush, Nikro, Abatement Technologies - so Schertz homeowners can verify what enters their attic before agreeing to a price.
Our Schertz customers receive the same deliverable every visit: a written scope, a written price under Haven Standard Clause 1, and a Documented Photo Record of every duct run. No exceptions.
Our Duct Repair & Sealing Services in Schertz
Flex Duct Repair
Schertz’s production-built tract homes from the 2000-2020 boom - mostly DR Horton and Lennar slabs with attic ductwork - are now hitting the 10-20 year mark where flexible duct liner degrades. Attic temperatures here routinely exceed 140°F in summer, accelerating that breakdown. We inspect with camera, mark damaged sections, and replace liner or full runs using professional-grade materials. A typical flex duct repair in Schertz runs $280-$480 per run, depending on attic accessibility and length.
Mastic Sealant Application
Mastic is the only sealant we trust for Schertz’s thermal extremes. Cheap tape fails in one season under attic heat. We brush-apply mastic to all boot connections, plenum joints, and register collars, then photograph every sealed joint for the job record. Full-system mastic resealing on a 2,000-square-foot Schertz home typically costs $650-$950. We use Guardsman-grade mastic rated for the temperature swings these attics see.
Air Leak Repair
Disconnected boots, torn flex at elbows, and corroded metal seams - these are the leaks that spike energy bills and pull attic air into living spaces. In Schertz, we frequently find leaks caused by caliche dust abrasion at flex elbows and thermal cycling at metal joints. Our repair includes leak detection with smoke pencil or pressure testing, then permanent repair with appropriate materials. Single-point air leak repair in Schertz starts around $180; multi-point repairs on older systems run $340-$580.
Duct Insulation
When attic ductwork loses its insulation wrap, condensation forms on cold supply lines in Schertz’s humid months and heated air dissipates before reaching registers in winter. We replace insulation with foil-faced fiberglass rated for unconditioned spaces. Duct insulation work in Schertz typically ranges $320-$560 for partial replacement and $780-$1,200 for full-system recovery on larger 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 Schertz
CleanRun stocks parts and uses equipment from trade-recognized brands: Rotobrush agitation systems, Nikro negative-pressure extractors, Abatement Technologies HEPA filtration, Honeywell and Aprilaire controls, and Guardsman sealants. Schertz homeowners can look up any of these independently - we name them precisely so you can. Our San Antonio warehouse maintains inventory for same-week parts replacement on common Schertz systems, meaning less waiting for specialty boots or collar sizes.
Common Duct Repair & Sealing Problems We See in Schertz Homes
- Blown insulation covering poorly sealed boots. During original construction, insulation crews often blew fiberglass over boot connections without sealing first. Every air handler cycle then pulls fine caliche dust from Guadalupe County soil through those gaps. We find this in Fairways at Scenic Hills, The Crossvine, and similar subdivisions east of Schertz Parkway - the camera shows a gray-white cake at the return plenum that homeowners never see from below.
- Flex duct liner degraded by attic heat. Schertz attic temperatures exceed 140°F for weeks each summer. Flex duct installed in 2008-2015 has liner that becomes brittle, tears at elbows, and separates from wire helix. The first sign is often a room that won’t cool despite register airflow; the cause is a torn flex run dumping conditioned air into the attic.
- Cedar and oak pollen overwhelming return systems. Schertz sits downwind of the Hill Country’s Ashe juniper belt. December-February cedar pollen season deposits fine, waxy particles that coat return grilles and accumulate in duct liner. When MERV-rated filters aren’t upgraded or changed on schedule, the blower pulls pollen past the filter. We remove this buildup with source removal and agitation under negative pressure, then seal the system to reduce future infiltration.
- Mastic sealant failed from thermal cycling. Original builder-grade mastic, applied thin and without fabric reinforcement, cracks after repeated expansion and contraction in Schertz’s unconditioned attics. Re-sealing with high-temp, fabric-reinforced mastic is the permanent fix - we warranty this work under the 365-Day Done Right Promise.
Pricing for Duct Repair & Sealing in Schertz, TX
Honest pricing means naming numbers. Here’s what duct repair and sealing costs in Schertz’s market:
| Service | Typical Range in Schertz |
|---|---|
| Single-point air leak repair (boot, seam, small tear) | $180-$280 |
| Flex duct repair / replacement (per run) | $280-$480 |
| Multi-point leak repair (3+ locations) | $340-$580 |
| Mastic sealant, partial system | $450-$650 |
| Full-system mastic resealing | $650-$950 |
| Duct insulation replacement, partial | $320-$560 |
| Duct insulation, full system | $780-$1,200 |
| Full repair + seal + insulation package | $900-$1,400 |
What moves the price: attic accessibility (truss spacing, hatch location), number of duct runs, extent of liner degradation, and whether we find caliche dust accumulation requiring source removal before sealing. Every estimate is free, written, and delivered before any work starts - Haven Standard Clause 1. No per-vent pricing. No coupon bait. Call (726) 600-7155 for your specific number.
We Also Serve Cities Near Schertz
Our crews work Duct Repair & Sealing in Schertz and surrounding communities regularly: Universal City to the south, Cibolo to the east, Converse to the southwest, and San Antonio metro properties throughout Bexar County. Scheduling is coordinated from our San Antonio office, with route efficiency keeping travel costs out of your estimate.
Serving Schertz, TX - Our Local Coverage Area
We’re based in the Schertz 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 Schertz
Every 2-3 years for homes on or near unpaved roads, compared to the 3-5 year interval typical for fully paved suburban developments. Caliche dust from Guadalupe County soil is finer and more abrasive than standard household dust, and it loads filters and duct liner faster. Homes with gravel driveways, adjacent open land, or frequent wind exposure should inspect annually and clean on the shorter cycle. Call (726) 600-7155 - we’ll check your current load and give you a written interval recommendation.
Most Schertz homeowners pay between $280 and $650 for standard repair and sealing, with full-system work on larger homes reaching $900-$1,400. The lower end covers single-point leaks or one flex duct run; the upper end covers multi-run repair, full mastic resealing, and insulation replacement. We publish these ranges because Haven Standard Clause 1 requires a written price before any work starts - there’s no “call for a quote” at CleanRun. Bring a competitor’s written estimate; our Free Second Opinion puts our number next to it at no cost.
Two factors combine: Guadalupe County’s caliche soil produces fine, powdery dust that infiltrates attic spaces, and original construction in subdivisions like Fairways at Scenic Hills and The Crossvine often blew insulation over boot connections without sealing them first. The return plenum operates under negative pressure, so it pulls that dust continuously through every unsealed gap. Our camera inspections show the pattern clearly - gray-white accumulation at the plenum that doesn’t match normal household dust. Sealing with mastic before adding insulation is the permanent fix; we perform this repair regularly in these neighborhoods.
Yes. Wood heat produces fine ash particulate and higher humidity variations that load ductwork differently than gas or heat pump systems. Outbuilding systems - workshop HVAC, guest house mini-splits with ducted air handlers, pool house units - often run on longer duct runs with less frequent filter changes. We recommend annual inspection for wood-heated homes in Schertz and 2-year cleaning cycles for outbuilding systems, with main home intervals adjusted based on what the camera shows. The Documented Photo Record lets you compare year over year.
Source removal first, then sealing to reduce re-entry. We use Rotobrush agitation and Nikro negative-pressure extraction with HEPA filtration to pull waxy cedar pollen and oak pollen from duct liner - these particles don’t respond to standard vacuuming because they adhere to flex duct surfaces. After cleaning, we seal boot connections and register collars with mastic to reduce the infiltration path. For homes with severe seasonal loading, we note filter upgrade recommendations in the written job record. Our tech was called to a slab-on-grade tract home in The Crossvine where a 2008-era flex duct run in the attic had torn liner and a disconnected boot at the return plenum. We performed camera inspection, then used source removal and agitation tools under negative pressure with HEPA filtration to pull out caked caliche dust and cedar pollen, mastic-sealed the boot, and repaired the flex duct; the homeowner said the cedar fever-symptom complaints from their kids dropped noticeably within a week.
Ready for a written estimate? Call (726) 600-7155 to schedule your free duct inspection in Schertz. We’ll deliver a written price before any work starts, photograph every duct run before and after, and back the work with our 365-Day Done Right Promise.
Written by Tomas Reyes, Owner at CleanRun Duct Repair & Cleaning, serving Schertz since 2013.