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 Sealing Across Live Oak
Duct sealing in Live Oak, TX typically runs $400 – $1,200 for a whole-home system, and most jobs are scheduled within a few days of your call. If your HVAC is running constantly but rooms stay uneven, or your filters clog faster than they should, the problem is usually air leaking at joints and seams before it ever reaches your vents.
We’re the Duct Sealing crew for Hollis Air Duct Cleaning, and we know Live Oak well. Dispatch and scheduling run through our San Antonio office, but our technicians serve Live Oak directly – from the older ranches near Toepperwein Road to the newer subdivisions off Loop 1604. We carry mastic, metal-backed tape, and mechanical fasteners sized for both the original sheet-metal trunk runs common in 1970s – 1990s builds and the flex-duct systems in newer construction. When you call (361) 326-5060, a live person answers, 24 hours a day. We’ll give you a written price before any work starts, and every seal is covered by our 365-Day Done Right Promise.
Why Hollis Air Duct Cleaning Is Live Oak’s Preferred Duct Sealing Company
We’ve been in business since 2004 as part of the Garrison Partners family, and our track record predates most competitors still advertising in the Live Oak area. That longevity matters because duct sealing on older Texas homes isn’t guesswork – it’s knowing how 1980s sheet-metal was fabricated, where the seams fail first, and how Live Oak’s double exposure to I-35 corridor dust and Hill Country cedar pollen changes what “sealed” actually needs to mean.
Our technicians are background-checked and uniformed, and they work under The Garrison Standard: arrive inside the quoted window, price in writing, complete the job by the book, leave the site clean. No estimate balloons once we’re inside. The price we write down is the price you pay. If a seal fails within a year, we return and make it right at no charge, including a free second visit. That’s not a slogan – it’s written on every job.
Calls are answered by a live person around the clock. No voicemail loops, no callback queues, no waiting until Monday morning to get on the schedule.
Duct Repair in Live Oak
Duct Repair in Live Oak means fixing the physical damage that makes sealing impossible – crushed flex runs, disconnected collars, corroded sheet metal, or supports that have failed and let ducts sag against attic framing. Most Live Oak homes built between the 1970s and 1990s have original sheet-metal trunk and branch systems that can last decades if repaired properly, but only if the damage is addressed before sealing work begins.
A typical duct repair in Live Oak runs $200 – $600 for localized fixes like reconnecting a fallen branch or patching a corroded section. More extensive repairs, including replacing multiple branch runs or rebuilding a damaged plenum, can reach $800 – $1,500. We always inspect with a camera before quoting, so you see what we see.
When Repair Comes Before Sealing
Sealing a duct with a disconnected collar or a crushed flex run is like caulking a broken window. We repair first, then seal. In Live Oak’s older center-city neighborhoods, we regularly find original support straps that have rusted through, letting sheet-metal branches drop and separate at the seams. Rehanging and reconnecting those runs is standard prep before any mastic goes on.
Corrosion from Humidity and Time
Live Oak’s humid subtropical climate and frequent heavy rains create attic conditions that accelerate metal fatigue. We’ve opened systems where the bottom of a trunk line has pinholed from years of condensation cycling. Patching or splicing that section is the only way to restore integrity before sealing the remaining joints.
Air Duct Sealing in Live Oak
Air Duct Sealing in Live Oak closes the gaps and seams where conditioned air escapes and unfiltered air gets pulled in. We use duct-sealing mastic – a thick, water-based compound that remains flexible after curing – plus metal-backed tape at joints where mechanical stress requires reinforcement. For the original sheet-metal systems common in Live Oak’s 1970s – 1990s housing stock, this means treating every trunk-to-branch connection, plenum seam, and register boot joint. For newer flex-duct installations, sealing focuses on the collar connections and ensuring the flex itself is properly supported so it doesn’t kink or sag.
Whole-home air duct sealing in Live Oak typically costs $400 – $1,200, depending on system size, attic accessibility, and whether the job follows a full cleaning. Sealing without prior cleaning on a dirty system is something we won’t do – more on that below.
Sealing Original Sheet-Metal Systems
The 1970s – 1990s sheet-metal ductwork in Live Oak’s older neighborhoods was built to last, but it was never designed to handle the particulate load from modern highway traffic and cedar pollen surges. Unsealed joints in these systems don’t just leak air – they act as intake points for dust, pollen, and attic insulation fibers. We seal with mastic rated for temperature cycling, applied to clean, dry metal so it bonds properly and stays bonded.
Flex-Duct in Newer Subdivisions
Newer Live Oak subdivisions often use flex duct for branch runs. It’s lighter and easier to install, but it sags, kinks, and tears at supports. Sealing here means checking every connection point and verifying the flex is hung at proper intervals so it doesn’t collapse under its own weight between seasons.
Trusted Brands We Service in Live Oak
We carry professional-grade equipment and materials from Rotobrush, Nikro, and Abatement Technologies on every Live Oak job. For filtration and sealing products, we stock Honeywell, Aprilaire, and Guardsman components – the same brands commercial crews use, not hardware-store substitutes. Having the right material on the van means we don’t leave your job to chase parts across San Antonio. A standard sheet-metal sealing job uses mastic and reinforcement tape we already carry; flex-duct repairs pull from our stocked collar and support strap inventory. That matters in Live Oak, where a technician who has to make two trips burns half a day and leaves you with an open system overnight.
Common Duct Sealing Problems We See in Live Oak Homes
- Sealing dirty ducts without cleaning first. In Live Oak’s older homes near the city center, original sheet-metal systems often hold decades of accumulated dust and pollen. Sealing over that material locks it into the system. It keeps circulating through your registers, and your filters clog faster, not slower. We clean first, seal second.
- Ignoring flex-duct sagging in newer subdivisions. A perfectly sealed rigid trunk doesn’t help if the flex branches are kinked around a rafter or lying on attic insulation. We check support spacing and rehang flex before sealing connections, so the system moves air the way it was designed to.
- Missing return-side leaks after cedar season. Hill Country cedar pollen surges through Live Oak every winter, and return ducts with unsealed joints pull that pollen straight into your air handler. We camera-inspect the return path after heavy pollen periods to find leaks that supply-side sealing alone won’t fix.
- Attic humidity degrading fresh seals. Live Oak’s heavy rains and high humidity create attic moisture that can prevent mastic from curing properly or cause tape adhesive to fail. We schedule sealing work when attic conditions allow proper curing, and we use products rated for the local climate.
Pricing for Duct Sealing in Live Oak, TX
Whole-home duct sealing in Live Oak typically runs $400 – $1,200. Most single-story ranches with accessible attics fall in the $400 – $700 range. Two-story traditional homes or systems with extensive original sheet-metal requiring joint-by-joint treatment can reach $800 – $1,200. Duct repair, when needed before sealing, adds $200 – $600 for localized fixes.
What moves the number: system size (more branches, more joints), attic accessibility (tight spaces take longer), whether the ducts need cleaning first, and whether we’re treating sheet-metal, flex, or a hybrid system. We don’t quote per-vent or per-linear-foot teaser prices that balloon at the door. We inspect, we write the full price down, and that’s what you pay.
Estimates are free. Call (361) 326-5060 to schedule.
We Also Serve Cities Near Live Oak
Our crews travel throughout the region for scheduled duct sealing work. We regularly serve Houston, San Antonio, Dallas, and Fort Worth from our San Antonio dispatch office. If you’re in Live Oak or any of these surrounding markets, the same written pricing and 365-Day Done Right Promise applies.
Serving Live Oak, TX - Our Local Coverage Area
We’re based in the Live Oak 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 About Duct Sealing in Live Oak
Every 3 – 5 years for cleaning, with sealing inspected at the same interval. Homes near I-35 pull in highway particulate year-round, so filters load faster and duct interiors accumulate dust more quickly than in areas farther from major construction corridors. If you’ve never had your original 1970s – 1990s ducts sealed, that first sealing is the most important – it closes the intake points where unfiltered air enters. Call (361) 326-5060 and we’ll check your system and give you a written estimate for both cleaning and sealing if needed.
Yes, because unsealed return ducts pull cedar pollen directly into your air handler during winter surges. Sealing those return-side leaks before or immediately after cedar season reduces the pollen load your filtration system has to handle. We see the spike in calls every January and February, especially in older Live Oak neighborhoods where original ductwork hasn’t been touched. If your allergies spike every winter, leaky returns are likely part of the problem. Call (361) 326-5060 for an inspection.
In most cases, yes. 1980s sheet-metal trunk and branch systems were built with heavier gauge material than what’s used today, and the seams fail from age and vibration, not from the metal itself being worn out. We clean the joints, apply mastic rated for temperature cycling, and reinforce high-stress points with metal-backed tape. Replacement is only necessary where corrosion has pinholed the metal or where physical damage has compromised the duct. We’ll show you camera footage and tell you straight which applies to your system. Call (361) 326-5060 for a free inspection.
It keeps your main home’s HVAC from pulling dust and pollen from open land and unpaved access roads into the living space. We sealed the original sheet-metal trunk and branch runs in a 1979 ranch off Toepperwein Road after the owner called about dust settling on furniture within a day of cleaning. The system was losing air at every unsealed joint in the attic, and with the house sitting close to open land and unpaved access, dust was being drawn into those gaps year-round. After sealing the joints and balancing the runs off the air handler, his filter loading dropped noticeably and the house held pressure the way it should. If your rural Live Oak property has outbuildings, shops, or barns near the home, the same particulate dynamics apply – your return ducts don’t discriminate between indoor and outdoor air when they leak.
Yes, and we check support and routing first. Flex duct in newer Live Oak construction is prone to sagging between supports and kinking where it rounds framing members. A sealed connection at the collar doesn’t help if the flex itself is pinched or lying on insulation. We rehang with proper support straps, eliminate kinks, then seal the connection points. The whole system has to move air properly, not just hold pressure at the joints. Call (361) 326-5060 to schedule an inspection of your flex-duct system.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Live Oak since 2004.