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
Duct repair and sealing in Schertz typically runs $280-$650 for most residential jobs, with flex duct replacement at the higher end and mastic sealing of accessible seams at the lower. We’re usually on-site within two business days of your call, and every job starts with a written price before a single panel comes off. Call (830) 402-5110 for a free estimate.
Our crews serve Schertz from our San Antonio dispatch office, and we know the local housing stock. We’ve worked the subdivisions off FM 78 and Seguin Road where builder-grade flex duct from the early 2000s is hitting its failure window, and we’ve pulled delaminated duct liner from attics over Roy Richard Drive that had been shedding fiberglass into the airstream for years. Schertz’s position on the eastern edge of the Hill Country transition zone creates specific problems - intense Mountain Cedar pollen loading from December through February, and attic temperatures that regularly exceed 150°F in summer. Those conditions don’t just dirty ducts; they destroy them. Our Duct Repair & Sealing team documents every run with before-and-after photos so you can see exactly what was found and what was fixed.
Why CleanRun Air Duct Cleaning Schertz Is Schertz’s Preferred Duct Repair & Sealing Company
We’ve been independently owned and operated under the Haven Standard since 2013. In that time 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. Tomas Reyes built this company on the principle that a customer should never have to guess what happened inside their ducts.
Schertz homeowners specifically tell us they chose us after a competitor’s “complete duct cleaning” left them with the same hot room and the same dust pattern. Our response is Haven Standard Clause 1: written upfront pricing, and Haven Standard Clause 4: documented photo record on every visit. You get the images. You get the static-pressure readings. You get the scope in writing before we touch the system.
Our technicians are background-checked, uniformed, and identified by name before arrival - Haven Standard Clause 3: Verified Crews. No subcontractors you didn’t agree to. No van without a logo. And every repair we make in Schertz is backed by our 365-Day Done Right Promise: if it’s not right, we make it right, in writing, not subject to manager approval.
We also offer a Free Second Opinion on any written estimate from another company. Bring their quote; we’ll put our number next to it in writing, no charge.
Our Duct Repair & Sealing Services in Schertz
Flex Duct Repair
Schertz’s late-1990s-to-early-2010s building boom installed enormous quantities of builder-grade flex duct in unconditioned attics. After two decades at 150°F-plus, the inner liner on these systems delaminates and sheds fiberglass particulate directly into your airstream. We see this constantly in neighborhoods along John E Peterson Boulevard and near Anton Schumann Park Campground. Our flex duct repair removes the failed section, replaces it with properly sized duct, and seals the connections with mastic - not tape that will fail in the next heat cycle. We verify the repair with camera inspection and static-pressure measurement before we leave.
Mastic Sealant Application
Duct tape is a temporary label, not a permanent seal. In Schertz attics, the adhesive on standard tape degrades within 18-24 months. We apply professional mastic sealant - a thick, fiber-reinforced compound that remains flexible at temperature extremes - to all accessible seams, plenum joints, and register boots. On homes near Edens Cemetery and along the rural stretches of 90th Infantry Division Highway, where dust loading from unpaved roads is higher, a proper mastic seal is often the difference between a system that holds pressure and one that pulls attic contamination into the living space.
Air Leak Repair
Disconnected ducts, crushed elbows, and failed collar connections are common in Schertz’s military-adjacent rental stock - homes that cycle through PCS families every 2-3 years and often go 5-10 years without proper HVAC service. We locate leaks with camera inspection and pressure testing, then repair with mechanical fasteners and mastic sealant. Every repair is photographed before and after, and the static-pressure reading is recorded to verify the fix.
Metal Duct Repair
Older Schertz homes and some custom builds use galvanized metal ductwork. We repair rusted sections, reseal longitudinal seams, and replace failed dampers. Metal ducts in Schertz’s humid subtropical climate are prone to condensation-related corrosion at plenum connections; we address the source, not just the symptom.
Duct Insulation
When flex duct liner has delaminated but the outer vapor barrier is intact, insulation replacement may be the right approach. We assess with camera inspection and recommend based on what we can document, not what we hope might help.
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
Our equipment roster includes Rotobrush for mechanical agitation, Nikro and Abatement Technologies for negative-pressure extraction, and Honeywell and Aprilaire components for filtration and control upgrades. We don’t use equipment we can’t name or you can’t look up. For Schertz homes with Guardsman filtration systems, we stock compatible media and can verify proper fit during the same visit. Parts availability means faster turnaround and fewer return trips - important when you’re scheduling around a military PCS window or a tenant turnover.
Common Duct Repair & Sealing Problems We See in Schertz Homes
- Delaminated flex duct liner in 1990s-2010s tract homes. The inner fiberglass layer separates from the wire helix and sheds particulate into the airstream. We find this in attics over Roy Richard Drive and throughout neighborhoods near Building 100 “Taj Mahal” - homes built fast, with ductwork that wasn’t designed for two decades of attic heat.
- Undersized return ducts on FM 78 and Seguin Road corridors. Regional HVAC subcontractors in the early 2000s frequently ran returns too small for the system. The restricted airflow pulls attic dust past seams at higher velocity, accelerating contamination well ahead of what the home’s age would suggest. These systems need sealing and often return duct upsizing.
- Pollen loading from Mountain Cedar events. From December through February, Ashe juniper pollen blows into Schertz from the Hill Country transition zone. Return-air grilles cake with fine particulate, and duct interiors load with allergenic material that standard filters won’t stop. Cleaning helps; sealing the duct system so it doesn’t pull attic air helps more.
- Outbuilding and shop system failures on rural Schertz properties. Ducts running to workshops, barns, and detached garages on properties along 90th Infantry Division Highway and other rural corridors are often ignored until visible failure. By the time we arrive, leaks have been feeding dust from unpaved roads and open land into the whole run. These systems typically need section replacement and full resealing.
Pricing for Duct Repair & Sealing in Schertz, TX
Here’s what duct repair and sealing actually costs in the Schertz market:
| Service | Typical Range in Schertz |
|---|---|
| Mastic sealant application (accessible seams, standard home) | $280-$420 |
| Flex duct section replacement (1-2 runs) | $340-$580 |
| Air leak repair with pressure verification | $380-$650 |
| Metal duct repair / seam resealing | $320-$520 |
| Duct insulation replacement | $400-$720 |
| Outbuilding / shop system repair | $450-$850 |
What moves you within these ranges: accessibility (crawl space versus open attic), the extent of delamination or disconnection, and whether the system needs pressure testing to locate hidden leaks. Every price is written before work starts - Haven Standard Clause 1 - and includes the documented photo record. No per-vent pricing. No coupon that doubles once we’re on-site. Call (830) 402-5110 for your exact number; estimates are free.
We Also Serve Cities Near Schertz
Our crews work Duct Repair & Sealing in Schertz and surrounding communities including Universal City, Cibolo, Converse, and New Braunfels. Dispatch and scheduling are coordinated from our San Antonio office, with local crews serving each area. The same written pricing, documented photo record, and 365-Day Done Right Promise apply in every city we serve.
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 if you’re on gravel roads with wood heat or an outbuilding system; 3-5 years otherwise. The dust loading from unpaved surfaces is real and measurable - we see it in the photo record. Wood heat produces finer particulate that penetrates standard filters more readily. If your return grille loads with visible dust within six months of cleaning, you’re on the shorter interval. Call (830) 402-5110 and we’ll assess your specific conditions.
Because regional subcontractors in that era frequently installed undersized return ducts to save material costs. The restricted return pulls attic air past duct seams at higher velocity, accelerating interior dust loading and often causing visible contamination within 3-5 years instead of the 10-15 you’d expect. We recognize this pattern in Schertz homes from that specific construction window. The fix is proper return sizing combined with mastic sealing of all seams - not just another cleaning. Call (830) 402-5110 for a free assessment.
Cleaning removes debris; repair and sealing fix the pathways that let debris in. If you have hot or cold rooms, rising energy bills, or visible dust at registers shortly after cleaning, you likely have leaks or delaminated duct liner. We verify with camera inspection and static-pressure testing - both documented in your photo record - and we’ll show you exactly what we found before recommending either service. Call (830) 402-5110 to schedule.
Yes. Wood heat produces acidic condensate and finer particulate that degrades standard duct tape and some mastic formulations faster than gas or electric systems. Outbuilding ducts in Schertz’s rural properties often run through unconditioned space with greater temperature swing and more physical exposure. We use high-temperature mastic rated for wood-heat applications and reinforce exposed runs with proper support and protective wrapping. The approach is documented in your written scope before we start. Call (830) 402-5110 to discuss your specific setup.
A technician arrives in a marked van, identified by name, and begins with a written price based on camera inspection of your system. We isolate the blower, put the ductwork under negative pressure, and photograph every run before touching anything. Repairs are performed with named, verifiable equipment - Rotobrush, Nikro, Honeywell components as appropriate - and verified with static-pressure readings and MERV rating checks. You receive the photo record and written warranty before we leave. The 365-Day Done Right Promise applies to all work. Call (830) 402-5110 to schedule.
Written by Tomas Reyes, Owner at CleanRun Duct Repair & Cleaning, serving Schertz since 2013.