Fast, Reliable Duct Repair & Sealing Across Pleasanton
Duct repair and sealing in Pleasanton typically costs $180-$650 depending on whether you need spot mastic sealing, flex-duct replacement, or full system reinsulation. Most Pleasanton jobs are completed in a single visit, and our Duct Repair & Sealing team carries the parts to handle both the older ranch homes off Highway 97 and the boom-era construction closer to 281. We’re familiar with the long drives out to acreage properties past the city limits, and we schedule accordingly so we’re not rushing your job or showing up late. Call (866) 347-2063 for a free estimate.
Pleasanton sits in the heart of the Eagle Ford Shale play, and years of heavy oilfield truck traffic on county roads, nearby drilling-pad operations, and hydraulic fracturing activity have elevated ambient particulate levels. Silica dust, diesel exhaust, and caliche dust from disturbed ranch roads all get drawn into residential HVAC intakes, accelerating duct contamination at a rate that non-oilfield South Texas towns simply don’t see. Homes built or rapidly occupied during the Eagle Ford workforce surge, roughly 2010-2016, frequently have economical flex-duct systems installed under deadline pressure. Those sagging accordion ducts trap oilfield-era particulates in every fold. That means Pleasanton duct systems need more frequent inspection and more thorough sealing than identical systems in San Antonio or Alamo Heights.
Why Bellows Air Duct & Vent Co. of Texas Is Pleasanton’s Preferred Duct Repair & Sealing Company
We’ve been serving South Texas homeowners since 1984, and Pleasanton has been on our route map for decades. Our technicians know the difference between a 1970s brick ranch near downtown and a manufactured home off the Highway 281 corridor, and they pack the right materials for both.
Pleasanton customers call us back because we show up when we say we will, we explain the price before touching a tool, and we leave camera footage of the sealed ductwork. No arguing, no paperwork chase if something needs adjustment. Our 90-Day Done Right Promise covers every Pleasanton job in writing.
Calls are answered by a live person, 24 hours a day. Not a voicemail tree, not an app. If you’re smelling diesel-tinged dust from your registers at 10 p.m., you’ll talk to someone who can get a technician scheduled.
Background-checked, uniformed technicians arrive in marked vehicles. Most Pleasanton repairs are finished in one trip because we stock Rotobrush inspection cameras, Nikro HEPA equipment, and professional-grade mastic and insulation on every truck.
Our Duct Repair & Sealing Services in Pleasanton
Duct Sealing
Unsealed joints and collar gaps are the main entry point for Pleasanton’s caliche-laden dust. We pressure-test your system, identify every leak point with a camera, then seal with mastic or metal-backed tape rated for Texas temperature swings. Homes along the Highway 97 and Highway 281 corridors see the worst infiltration because of sustained oilfield traffic, so we pay particular attention to register boots and return plenums on those calls.

Flex Duct Repair
The Eagle Ford boom put thousands of flex-duct systems into Pleasanton homes under tight deadlines. Those corrugated plastic sleeves sag over time, trap debris in the valleys, and tear at hanger points. We replace damaged flex runs with properly supported rigid metal where it makes sense, or install new insulated flex with adequate slope and fewer joints. A rigid replacement eliminates the particulate traps that flex creates.

Metal Duct Repair
Older Pleasanton ranch homes often have galvanized steel ductwork from the original build. We repair separated seams, rust holes from condensation, and damaged dampers. When metal ducts run through unconditioned attics or crawlspaces in Atascosa County’s humidity, we add insulation after sealing to prevent the mold growth that thrives in our dry-winter, muggy-summer cycle.

Mastic Sealant Application
Brush-on mastic is our preferred sealant for Pleasanton’s contaminated systems. It fills irregular gaps that tape misses, and it hardens into a permanent, flexible seal that won’t dry out in attic heat. We apply it at every collar joint, plenum connection, and damper penetration. For homes near active drilling, mastic sealing is the single most effective step to stop bypass airflow that pulls unfiltered dust past your system.

Duct Insulation
Uninsulated metal ducts in Pleasanton crawlspaces sweat during Gulf-influenced summer humidity, then dry out in winter. That condensation cycle grows mold and rots surrounding structure. We wrap sealed ducts with formaldehyde-free fiberglass insulation, sealed with vapor barrier, to maintain air temperature and prevent moisture problems.

Air Leak Repair
Disconnected ducts in attic spaces blow conditioned air into nowhere and pull attic dust into supply lines. We find these leaks with camera inspection and pressure testing, then reconnect and seal with mechanical fasteners plus mastic. In Pleasanton’s older homes, we’ve found original ducts that were never fully connected at the plenum, leaking for forty years.

What happens when you call
- 1
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.
Trusted Brands We Service in Pleasanton
We carry professional-grade equipment and materials from Rotobrush, Nikro, Honeywell, and Aprilaire. These are the same brands serious HVAC contractors specify, not retail-grade alternatives. For Pleasanton customers, that means we can source replacement collars, dampers, and insulated flex locally without waiting on freight. Our trucks stock mastic, metal tape, fiberglass insulation, and rigid duct sections in standard diameters so we’re not making a supply run while your system is open. If your home has Honeywell or Aprilaire air cleaners integrated with the duct system, we seal around those units without disturbing their calibration.
Common Duct Repair & Sealing Problems We See in Pleasanton Homes
- Sagging boom-era flex ducts trap particulate buildup in folds. The Eagle Ford surge installed thousands of these systems quickly, and the sagging reduces airflow while creating valleys where caliche and diesel dust collect. We replace or resupport these runs to restore even cooling.
- Unsealed collar gaps at register boots let caliche dust bypass the filter entirely. Even a tight pleated filter can’t stop what enters downstream. We find these gaps with camera inspection and seal them with mastic so all air passes through filtration.
- Dry winter and humid summer swings cause condensation on uninsulated metal ducts in crawlspaces. Pleasanton’s climate pattern is ideal for mold growth when systems sit idle between heavy-use seasons. Sealing plus insulation breaks that cycle.
- Disconnected attic ducts leak conditioned air and pull in attic debris. We pressure-test to find these invisible leaks, which can waste 20-30 percent of cooling output in a Pleasanton summer.
Pricing for Duct Repair & Sealing in Pleasanton, TX
Here’s what Pleasanton homeowners typically pay:
- Spot mastic sealing at accessible joints: $180-$290
- Flex-duct repair or single-run replacement: $220-$380
- Multiple flex-run replacement with rigid metal upgrade: $450-$650
- Full duct insulation wrap for attic or crawlspace system: $380-$580
- Pressure testing and comprehensive leak sealing (whole system): $320-$490
Factors that move the price: accessibility in attic or crawlspace, extent of contamination requiring pre-cleaning, and whether we need to replace rather than seal existing material. We disclose the full price before starting, and we honor our standing offer of $50 off any repair over $250. Seniors and veterans receive a permanent 5 percent discount. Call (866) 347-2063 for a free estimate that matches your specific Pleasanton home.
We Also Serve Cities Near Pleasanton
Our service area extends throughout South Texas, and we regularly run calls to Pleasanton from our Houston base, with scheduled routes through Floresville, Lackland Air Force Base, San Antonio, and Alamo Heights. If you’re in Atascosa County or the surrounding Eagle Ford region, we can get to you.
Serving Pleasanton, TX - Our Local Coverage Area
We’re based in the Pleasanton 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 Pleasanton
Caliche dust itself doesn’t destroy duct material, but it accelerates wear on flex-duct liners and can corrode metal seams when combined with humidity. The bigger problem is accumulation that restricts airflow and strains your blower motor. We remove the buildup and seal the entry points so it stops returning. Call (866) 347-2063 for a camera inspection and free estimate.
Yes. Boom-era flex-duct installations in Pleasanton were often hung with inadequate support spacing, leading to sagging and stress tears at the collars. The corrugated interior also traps particulates that rigid metal would shed. We inspect these systems carefully and often recommend partial rigid-metal replacement for long-term reliability. Call (866) 347-2063 to schedule a look.
Homes along Highway 281 and other Eagle Ford haul routes should have duct integrity checked annually because of the elevated particulate load. Mastic sealant lasts years, but vibration from heavy truck traffic can loosen mechanical connections over time. We include seal inspection with our $89 Seasonal Tune-Up. Call (866) 347-2063 to book.
Proper sealing stops unfiltered air from entering your duct system, which is the main pathway for diesel odor and particulate into your living space. It won’t block outdoor air at your windows, but it will ensure every cubic foot moving through your vents has passed through your filter. We verify this with before-and-after pressure testing. Call (866) 347-2063 for an estimate.
We do. Many Pleasanton acreage properties have detached shops, barns, or guest buildings with separate duct systems that see the same caliche and diesel contamination. We seal and repair those systems with the same materials and warranty coverage as your main house. Call (866) 347-2063 to discuss the scope.
Written by Wade Kellerman, Owner at Bellows Air Duct & Vent Co., serving Pleasanton since 1984.