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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After
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Before
AfterFast, Reliable Duct Repair & Sealing Across Lost Creek
Duct repair and sealing in Lost Creek typically runs $280-$650 per HVAC system depending on whether we’re replacing collapsed flex sections, resealing dried mastic at plenum connections, or both. Most Lost Creek homes need two to three systems addressed, not one, because the area’s late-1970s to 1990s ranch and two-story builds were spec’d with multiple zones and long horizontal flex runs. We dispatch crews to Lost Creek from our Dallas-Fort Worth coordination office, and every job starts with a written price before a single panel comes off. Call (737) 243-9544 for a free estimate.
We’ve worked Lost Creek long enough to know the difference between a home on Yaupon Valley Road and one tucked back toward Barton Creek. The cedar pollen load here is not theoretical. Neither is the humidity pooling in creek-valley attics. Our Duct Repair & Sealing team treats those conditions as material facts, not marketing flavor.
Why CleanRun Air Duct Cleaning Austin Is Lost Creek’s Preferred Duct Repair & Sealing Company
CleanRun has served Lost Creek since we first crossed the Austin metro in 2013. In that time we’ve documented the inside of thousands of duct runs here, and the photo record we’ve built tells a consistent story: yellow-tan cedar pollen residue layered over limestone dust, collapsed flex at tight turns, and mastic that flaked off decades ago.
Our reputation in Lost Creek rests on what we can put in writing. Haven Standard Clause 1: written price before work starts, every time. No “call for a quote.” No per-vent bait-and-switch. The price you sign is the price you pay.
Reviews from Lost Creek customers consistently mention the photo documentation. One homeowner on Creek Meadow Drive told us she chose us because we were the only company that showed her what was actually inside her ducts before asking for a decision. That’s standard here, not extra.
Response time to Lost Creek is typically next-day or within 48 hours for non-urgent sealing work. We don’t manufacture urgency. We answer our phones live, 24/7, and schedule based on actual crew availability, not phantom scarcity.
Local knowledge matters because Lost Creek’s housing stock is distinct from eastern Austin suburbs. The long flex runs, multiple systems per house, and cedar-pollen accumulation pattern create failure modes that a technician familiar only with newer, single-system builds will misdiagnose or under-scope.
Our Duct Repair & Sealing Services in Lost Creek
Duct Sealing
Lost Creek homes lose conditioned air at plenum takeoffs, trunk connections, and register boots where mastic has dried and cracked. We pressure-test each system to quantify leakage, then reseal with fresh mastic and metal-backed tape where appropriate. Because most Lost Creek houses have two or three systems, we scope and price sealing per system, not per house. A single blanket quote almost always means someone didn’t look at all your ductwork.
Flex Duct Repair
The flex-duct systems installed during Lost Creek’s 1970s-1990s build era sag between joists, kink at tight 90-degree turns, and separate at takeoffs. Our field crews find collapsed sections in attics over Sandstone Cove and Yaupon Valley with regularity. We replace damaged flex with properly supported new runs, sized to manufacturer specs, and we photograph every connection before closing up. Equipment includes Rotobrush and Nikro negative-pressure systems for extraction before repair.
Metal Duct Repair
Where Lost Creek homes have galvanized trunk lines or transition pieces, we repair separated seams, rust-through at low points, and failed dampers. Metal work requires different sealing strategy than flex: high-temperature mastic, mechanical fasteners, and sometimes custom-fabricated transition pieces. We stock common fittings and coordinate fabrication for unusual sizes.
Mastic Sealant Application
Old mastic in Lost Creek attics has been baking since the Reagan administration. It flakes. It cracks. It lets cedar pollen and humid creek-valley air bypass your filter entirely. We scrape failed mastic back to clean metal or duct board, then apply fresh sealant rated for the temperature cycling your attic sees from April through October. This is slow work, done by hand, and we photograph every sealed joint.
Duct Insulation
Where flex duct insulation has degraded or where metal trunks run through unconditioned attic space, we install new insulation wraps or replace the run entirely. Lost Creek’s extended cooling season and higher attic humidity make this more consequential here than in drier parts of the metro.
Air Leak Repair
Return-side leaks are particularly insidious in multi-system Lost Creek homes. One system’s return pulls unfiltered attic air while the other system masks the symptom. We isolate and test each return path, then repair with sealed hard pipe or supported flex as appropriate.
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.
BeforeAfterTrusted Brands We Service in Lost Creek
Our crews arrive with professional-grade equipment from Abatement Technologies, Honeywell, and Aprilaire - brands you can verify independently before we start. We stock common flex diameters, mastic compounds, and register boots sized for Lost Creek’s predominant construction era, which means most repairs don’t wait on parts. For specialized components, our Dallas-Fort Worth coordination office maintains next-day supply relationships with regional distributors. You can look up our equipment roster yourself. We name it precisely because we have nothing to hide behind vague claims.
Common Duct Repair & Sealing Problems We See in Lost Creek Homes
- Collapsed flex at tight attic turns. The long horizontal runs typical of Lost Creek’s 1980s two-stories sag and kink where they bend around chimney chases or truss members. Air stops moving. The room goes stale. The homeowner cranks the thermostat. We find these with camera inspection, not guesswork.
- Dried, flaking mastic at plenum connections. Mastic applied in 1987 has no flexibility left. It cracks. Conditioned air leaks into the attic. Cedar pollen leaks in. We remove the old material entirely before resealing, because new mastic won’t bond to dust and flakes.
- Multi-system homes with one failed zone. Lost Creek’s larger ranches often have three systems. When one return leaks, the others compensate. The house feels “off” but not broken. A single-system repair quote leaves the real problem untouched. We inspect every system, document what we find, and price per zone so you know what you’re actually buying.
- Humidity-driven mold at low points. Lost Creek’s creek-valley location creates pockets of higher attic humidity than surrounding upland areas. During April-October cooling season, condensation forms in low spots of poorly insulated duct runs. We find this with interior camera inspection, then repair and reseal to prevent recurrence.
Pricing for Duct Repair & Sealing in Lost Creek, TX
Here’s what duct repair and sealing costs in the Lost Creek market, based on jobs we’ve completed and documented:
| Service | Typical Range in Lost Creek |
|---|---|
| Mastic resealing (per system, 8-15 joints) | $280-$420 |
| Flex duct section replacement (per run) | $180-$340 |
| Collapsed flex repair with support hardware | $240-$480 |
| Metal trunk seam repair / rust remediation | $320-$580 |
| Full system pressure test with documentation | $150-$220 (often included with repair) |
| Multi-system home (2-3 systems, typical scope) | $650-$1,400 |
These are whole-system ranges, not per-vent teasers. What moves the price: how many systems your home has, how accessible the ductwork is, whether we’re repairing or replacing flex, and whether mold remediation is needed before sealing. We deliver a written price before any work starts, every time, under Haven Standard Clause 1. No exceptions. Estimates are free. Call (737) 243-9544.
We Also Serve Cities Near Lost Creek
Our crews work throughout the Austin metro, including Duct Repair & Sealing in Lost Creek and surrounding communities: Austin proper, Jollyville to the north, Wells Branch, and Pflugerville to the northeast. Each area has distinct housing stock and climate conditions; our inspection and pricing reflect those differences rather than applying a metro-wide template.
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
Yes, if you want the house to perform as designed. In Lost Creek’s multi-system ranches and two-stories, one system’s leaks are often masked by the others, so sealing only the “worst” system leaves you with uneven temperatures, higher bills, and continued pollen infiltration. We inspect and quote per system so you can prioritize, but we won’t pretend a single-system fix solves a whole-house problem. Call (737) 243-9544 for a written estimate on all your systems.
That’s mountain cedar pollen, specific to Lost Creek’s position at the Hill Country transition zone. Ashe juniper releases extraordinarily fine, waxy pollen from December through February, and your return ducts pull it directly inside. The yellow-tan film is the “cedar fingerprint” our technicians document every spring, often layered over limestone construction dust. Sealing return-side leaks reduces how much pollen enters, but existing accumulation requires cleaning before sealing can be effective. We photograph this so you can see exactly what’s in your ducts.
We can seal everything we can access, and we camera-inspect everything we can’t directly reach. In Lost Creek homes, most ductwork runs through attics and crawl spaces, not enclosed walls, so physical access is usually straightforward. Where ducts are buried, we use camera verification to confirm seal integrity and pressure testing to quantify leakage reduction. The photo record and static pressure readings are your documentation that the work happened, even in places you can’t see.
A legitimate quote specifies: which systems are being addressed, which runs are being repaired or replaced, whether mastic resealing is included, the pressure-test results before and after, and a documented photo record of every run. It does not say “duct repair: $X” without defining scope. In Lost Creek’s multi-system homes, a vague single-line quote almost always means someone plans to inspect one system and ignore the others. We put scope in writing before work starts, per Haven Standard Clause 1. Bring us a competitor’s quote; our Free Second Opinion puts our written scope next to theirs at no cost.
It does. Lost Creek’s position in the Balcones Escarpment creek valley creates higher attic humidity than surrounding upland areas, which means condensation forms more readily at duct leaks and low points. Sealing alone doesn’t address existing moisture damage; we inspect for mold colonization before sealing, because trapping humidity inside a sealed but contaminated system makes the problem worse. Our camera inspection identifies these conditions so they’re handled in the right sequence. Call (737) 243-9544 to schedule.
What to Expect When You Call CleanRun
Every call is answered by a live person, 24/7. We’ll schedule an inspection, usually within 24-48 hours for Lost Creek. Our technician arrives in uniform, background-checked, identified by name before arrival under Haven Standard Clause 3: Verified Crews. They’ll run a camera through your duct runs, show you what they find, and deliver a written price before any work begins. The job concludes with a Documented Photo Record of every run, before and after, plus static pressure readings. The 365-Day Done Right Promise applies in writing, not as a verbal afterthought.
Last March we were called to a two-story on Sandstone Cove after the homeowner noticed the upstairs primary bedroom never held temperature and the downstairs return was pulling visible yellow-tan cedar pollen dust through the register. Our tech pulled the air handler panel, ran a camera inspection down the main trunk and two flex runs, and found a collapsed flex section at a tight 90-degree turn plus separated mastic at a plenum takeoff. We repaired the flex, re-sealed the takeoff with fresh mastic, then pressure-tested both systems before documenting every run with photos and a before/after static pressure reading.
That’s how we work. No urgency theatre. No hidden scope. Just documented evidence and a written price you can hold in your hand.
Ready for a written estimate? Call CleanRun at (737) 243-9544. Estimates are free. Every price is delivered in writing before work starts. Every job is backed by the 365-Day Done Right Promise and the full H.A.V.E.N. Standard.
Written by Tomas Reyes, Owner at CleanRun Duct Repair & Cleaning, serving Lost Creek since 2013.
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