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 Lost Creek
Duct repair and sealing in Lost Creek typically runs $280-$680 per HVAC system, with most homes in the area needing attention on two or three separate systems. We dispatch crews to Lost Creek from our Dallas-Fort Worth coordination office, and our technicians know the specific challenges of escarpment-edge homes: original flex ductwork from the 1970s through 1990s, sprawling single-story layouts on slab foundations, and the annual February coating of rust-orange cedar pollen that homes just five miles east never see. Call (737) 259-5752 for a written estimate before any work begins.
Why CleanRun Air Duct Cleaning Round Rock Is Lost Creek’s Preferred Duct Repair & Sealing Company
We’ve been serving Lost Creek since 2013, and the pattern is consistent: large custom homes with multiple systems, long duct runs, and ductwork that has been baking in Central Texas attics for thirty to forty years. Our Duct Repair & Sealing crews have photographed the inside of thousands of these runs, and we bring that documented history to every job.
Lost Creek homeowners tend to research thoroughly before calling. We built our process for exactly that customer. Every estimate arrives in writing before a panel comes off. Every job concludes with a Documented Photo Record showing the interior of every duct run, before and after. The 365-Day Done Right Promise is backed in writing on every invoice, not buried in a policy manual.
Our technicians are background-checked, uniformed, and identified by name before arrival - Haven Standard Clause 3: Verified Crews. They carry professional-grade equipment from Rotobrush, Nikro, and Honeywell, brands you can look up independently before agreeing to any price.
We answer calls with a live person, 24/7. No automated routing to a national queue.
Our Duct Repair & Sealing Services in Lost Creek
Flex Duct Repair
Lost Creek’s housing stock is dominated by upscale homes built between the mid-1970s and mid-1990s, many with original flex ductwork that has degraded through decades of intense heat cycling in unconditioned attics. We’ve found crushed, torn, and completely separated flex runs in homes near the Barton Creek corridor, particularly where long attic spans create sagging points that collect debris and restrict airflow. Our crews replace degraded flex with new, properly supported runs sized to the original design specs, then photograph every connection for the job record.
Mastic Sealant Application
Metal duct joints and plenum connections in older Lost Creek homes often rely on failing tape or degraded sealant that lets conditioned air escape into the attic. We apply professional-grade mastic sealant - a thick, brush-on compound that remains flexible after curing - to every accessible joint. In a typical Lost Creek home with three systems, this process can recover 15-25% of air volume that was being lost to leakage. The work is slow and methodical. We photograph every sealed joint so you can verify what was done in spaces you cannot enter yourself.
Air Leak Repair
Slab foundations with complex layouts, common throughout Lost Creek’s custom neighborhoods, often hide disconnected or poorly sealed duct joints behind walls and soffits. Pressure imbalances show up as hot rooms, whistling registers, or excessive dust - but the source stays hidden until a camera inspection reveals it. We pressurize the system and use smoke testing to locate leaks, then repair accessible sections and document the before-and-after pressure readings in your job record.
Duct Insulation
Attic ductwork in Lost Creek runs through some of the most punishing summer conditions in Central Texas, with attic temperatures regularly exceeding 140°F from May through October. Degraded or missing insulation forces your systems to overcook cooled air before it ever reaches the register. We install new foil-faced fiberglass insulation with proper vapor barriers, sealed at every seam, to maintain design temperature through the full length of the run.
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 Lost Creek
Our equipment roster includes Rotobrush agitation systems, Nikro negative-pressure extractors, and Honeywell air quality components - professional-grade tools we name specifically so you can verify their specifications before we arrive. We stock common flex duct, mastic, and connection hardware for fast turnaround on Lost Creek jobs, and our technicians carry replacement parts sized for the larger duct runs typical of homes in this area. Equipment matters. A shop-vac with a rotary brush is not the same machine as a Nikro HEPA-filtered extraction system on a negative-pressure rig, and the difference shows up in your photo record.
Common Duct Repair & Sealing Problems We See in Lost Creek Homes
- Original flex ductwork degraded by heat cycling. The mid-1970s to mid-1990s flex common in Lost Creek becomes brittle, tears at support points, and separates at collars after decades in 140°F attics. We regularly find entire sections that have collapsed or pulled free, dumping conditioned air into the attic and pulling in unfiltered air through leaks.
- Cedar pollen sediment concentrating in long runs. Homes backing up to the cedar-covered ridgelines along Barton Creek see a distinctive rust-orange sediment coat duct interiors every February. This material is dense and sticky, clinging to flex duct walls and accumulating at elbows and transitions where airflow slows. It strains blower motors and reduces system efficiency until properly removed.
- Hidden disconnections in slab-foundation layouts. Complex duct routing through soffits and chases in sprawling single-story homes creates junction points that are impossible to inspect without a camera. We’ve found completely separated joints that had been leaking for years, invisible to the homeowner but obvious on a pressure test.
- Undersized returns on multi-system homes. Many Lost Creek homes were designed with three separate HVAC systems but return ductwork that cannot move sufficient volume for modern equipment. The result is short-cycling, uneven temperatures, and premature compressor failure. We resize and seal returns to match actual system demand.
Pricing for Duct Repair & Sealing in Lost Creek, TX
Most Lost Creek homes fall into one of these ranges, based on system count and accessibility:
| Service | Typical Range in Lost Creek |
|---|---|
| Mastic sealant application (single system) | $280-$420 |
| Flex duct repair/replacement (per run) | $180-$340 |
| Full system inspection with photo record | $150-$220 |
| Multi-system home (3 systems, full seal and repair) | $680-$1,200 |
| Duct insulation replacement (per run) | $220-$380 |
These are whole-system prices, not per-vent teaser rates that balloon once the truck arrives. We deliver a written price before any work starts, every time, under Haven Standard Clause 1. The final cost depends on system count, attic accessibility, and the condition we find once the camera goes in - but you will know that number in writing before we touch a tool. Estimates are free. Call (737) 259-5752 to schedule.
We Also Serve Cities Near Lost Creek
Our crews work throughout the northern Austin metro, including Lost Creek and neighboring communities. We regularly schedule jobs in Round Rock, Brushy Creek, Wells Branch, and Pflugerville, often routing multiple appointments from the same dispatch day to minimize drive time and keep schedules predictable.
Serving Lost Creek, TX - Our Local Coverage Area
We’re based in the Lost Creek 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 Lost Creek
Once annually, timed for late February or early March after the cedar pollen surge ends. The combination of three systems running continuously from May through October and the heavy winter pollen load concentrates debris faster here than in flatter Austin neighborhoods. A post-cedar-season inspection lets us catch degraded flex and seal failures before the summer cooling demand peaks. Call (737) 259-5752 to book your annual inspection - estimates are free.
It is Ashe juniper pollen, commonly called mountain cedar, which releases in massive quantities from the dense cedar stands on the Balcones Escarpment immediately west of Lost Creek. The pollen is distinctive: fine, rust-orange, and electrostatically sticky, so it adheres to duct walls rather than passing through to your filter. Homes even five miles east of the escarpment rarely see this pattern. We remove it with agitation tools under negative pressure, then seal the ductwork to minimize future infiltration. The photo record from your job will show the difference.
Three factors: original flex ductwork from the 1970s-1990s that has degraded and leaks conditioned air into the attic; multiple HVAC systems with long duct runs that compound leakage losses; and slab-foundation layouts with complex routing that hides disconnected joints. A typical Lost Creek home with three systems and 20-30% duct leakage is effectively heating and cooling the attic. Sealing and repair usually recover 15-25% of that lost efficiency. We measure pressure before and after so you can see the improvement in your job record.
Yes. We price per system and inspect each independently, because a three-system home in Lost Creek often has three different conditions: one system may have original 1980s flex duct, another a partial replacement from a renovation, the third a newer install with its own issues. Our camera goes through every run on every system, and the photo record is organized by system so you can track what was found where. Written pricing is delivered system by system before work begins.
A two-person crew arrives in a marked vehicle, identifies themselves by name, and begins with a written price based on the scope we agreed to. They access the attic, run a camera through every duct run, and show you the findings on a tablet. Work proceeds with Rotobrush agitation and Nikro negative-pressure extraction if cleaning is needed, followed by mastic sealant application and any flex duct replacement. The job concludes with a second camera pass, pressure testing, and delivery of your Documented Photo Record. Most single-system jobs take 3-4 hours; multi-system homes take a full day. The 365-Day Done Right Promise applies to all work.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning Round Rock, serving Lost Creek since 2013.