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 Austin
Duct repair and sealing in Austin typically runs $280-$650 for most single-system homes, with flex duct replacement in older attics pushing toward the higher end when multiple runs are involved. We dispatch from our Austin office and carry mastic, mesh, and flex duct inventory sized for the central Texas housing stock. Call (737) 252-1285 for a written estimate before any work starts.
We’ve worked in Austin attics since 2013. The housing here tells a specific story: Hyde Park bungalows with flex duct from the Carter administration, 1990s Cedar Park tract homes whose attic runs are hitting their third decade, and everywhere the same caliche bedrock that means no basements and no conditioned crawlspaces to hide ductwork in. Everything runs through the attic. Everything bakes.
Why CleanRun Air Duct Cleaning Leander Is Austin’s Preferred Duct Repair & Sealing Company
Our Duct Repair & Sealing team has documented 52,000+ homes with before-and-after photos of every duct run, and a growing share of those are in Austin neighborhoods where the housing stock creates predictable, fixable problems. We don’t guess at what’s in your attic. We photograph it.
Customers in Austin rate the work consistently, and the reviews we receive from Travis Heights to Four Points repeat the same points: the technician showed the photo record, the written price matched the final invoice, and the 365-Day Done Right Promise was printed on the work order, not just mentioned in passing. Haven Standard Clause 1 - Written Price Before Any Work Starts - applies to every Austin job without exception.
Dispatch and scheduling are coordinated from our Austin office, so crews serving the metro area understand local conditions: which 1990s subdivisions in Pflugerville have the same flex duct failures, how cedar season affects register buildup in northwest Hills neighborhoods, and why a standard cleaning won’t fix a disconnected collar in a Hyde Park attic. Response time to most Austin addresses is same-day or next-day for non-urgent scheduling; we don’t manufacture urgency, but we don’t leave gaps in the calendar either.
Every technician is background-checked and uniformed under Haven Standard Clause 3: Verified Crews. Tomas Reyes, who leads CleanRun, requires that license numbers and crew identification be shared with the customer before arrival. This is standard practice, not a premium add-on.
Our Duct Repair & Sealing Services in Austin
Duct Sealing
Austin’s summer attic temperatures - routinely 140-150°F from June through September - degrade mastic and foil tape at the joints of duct runs built during the tech boom. Gaps as small as a quarter-inch pull hot attic air, insulation dust, and settled cedar pollen directly into the supply stream. Our duct sealing work in Austin addresses this with fresh mastic and fiberglass mesh applied to every accessible joint, then photographed before the insulation goes back. A typical duct sealing job for a single-system Austin home runs $280-$420, with multi-system homes or complex attic layouts toward $550-$650.
Flex Duct Repair
The 1990s-2000s tract homes in Pflugerville, Cedar Park, and Round Rock were built with flex duct rated for 25 years in moderate conditions. Austin attics are not moderate. We’ve replaced collapsed flex runs in Steiner Ranch homes where the inner liner had degraded to the point of blocking airflow entirely, and reconnected separated collars in Wells Branch attics where the original zip-tie supports had failed. Flex duct repair in Austin typically ranges from $180-$340 per run, with full attic replacement of 6-8 runs running $1,200-$1,800 depending on plenum access and insulation removal requirements.
Metal Duct Repair
Older Austin homes - the 1950s-1970s central-city stock in Hyde Park, Clarksville, and parts of Tarrytown - sometimes have galvanized metal ductwork with rusted seams or failed fiberglass liner. Metal duct repair requires different techniques: sheet metal patches, riveted collars, and sealed access panels. We see less metal duct in Austin than in northern markets, but when we do, the repair is usually structural rather than cosmetic. Metal duct repair in Austin starts around $320 for localized seam work and runs to $800+ for extensive rust remediation or liner replacement.
Mastic Sealant Application
Mastic is the standard for durable duct sealing in hot climates, and we apply it with fiberglass mesh reinforcement at every joint, collar, and plenum connection. Unlike tape, mastic remains flexible after curing and tolerates the thermal expansion that destroys adhesive products in Austin attics. We use Abatement Technologies and Guardsman products rated for the temperature range we actually encounter. Mastic sealant work is typically bundled with duct sealing or flex duct repair; standalone application for a well-accessible system runs $240-$380.
Duct Insulation
When flex duct outer insulation has compressed, torn, or pulled away from the core - common in Austin attics where installers walked on duct runs during construction - we replace or supplement insulation with foil-faced fiberglass wrap. This matters more in Austin than in milder climates because the attic temperature differential is extreme. Insulation work is usually quoted as part of flex duct replacement or repair, but standalone insulation refresh for accessible runs runs $160-$280 per 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 Austin
Our equipment roster includes Rotobrush and Nikro for mechanical agitation and negative-pressure extraction, plus Honeywell and Aprilaire components for filtration and fresh-air integration where duct repair reveals inadequate return capacity. We don’t claim these brands do anything beyond their manufacturer specifications. We name them because customers in Austin research equipment before hiring, and we want that research to confirm what we’re using rather than raise questions. Parts inventory for common Austin HVAC configurations - Trane, Carrier, Lennox systems paired with standard flex duct - is stocked locally, so repairs that require collars, start collars, or transition fittings don’t wait on shipping.
Common Duct Repair & Sealing Problems We See in Austin Homes
- Flex duct mastic failure in 1990s-2000s attics. The tech-boom subdivisions in Pflugerville, Cedar Park, and Round Rock were built with flex duct connections sealed with mastic or foil tape that degrades after 20-30 years of 140-150°F summer heat. Gaps open at plenum connections and draw hot, dusty attic air directly into the system.
- Crushed or disconnected runs in central-city bungalows. Hyde Park and Travis Heights homes from the 1950s-1970s often have flex duct that was replaced once in the 1990s or 2000s and is now collapsing. A standard cleaning won’t restore airflow through a duct whose inner liner has compressed into a flattened ribbon.
- Cedar pollen sediment coating supply registers. After heavy Ashe juniper events in December through February, fine yellowish-tan pollen bypasses standard MERV filters and settles in return plenums and supply ductwork. Homeowners who skip cleaning for 3-4 years find visible debris that re-enters the air every January when the blower cycles.
- Disconnected collars from thermal cycling. Austin’s extreme attic temperature range - 40°F winter mornings to 150°F summer afternoons - causes repeated expansion and contraction at duct joints. Collars separate slowly, often unnoticed, until airflow drops or register dust becomes visible.
Pricing for Duct Repair & Sealing in Austin, TX
| Service | Typical Range in Austin |
|---|---|
| Duct sealing (single system, accessible attic) | $280-$420 |
| Duct sealing (multi-system or complex layout) | $550-$650 |
| Flex duct repair (per run) | $180-$340 |
| Full flex duct replacement (6-8 runs) | $1,200-$1,800 |
| Metal duct repair (localized) | $320-$500 |
| Metal duct repair (extensive/rust) | $600-$800+ |
| Mastic sealant (standalone) | $240-$380 |
| Duct insulation refresh (per run) | $160-$280 |
These ranges reflect what we actually quote for Austin homes with typical attic access and standard HVAC configurations. Factors that push toward the higher end: multiple disconnected collars requiring plenum access, compressed or torn insulation that must be removed before sealing, and metal duct with rusted seams needing patch panels. Every quote is written and delivered before work begins, per Haven Standard Clause 1. No per-vent pricing. No coupon bait. Call (737) 252-1285 for an exact quote - estimates are free.
We Also Serve Cities Near Austin
Our crews work throughout the Austin metro, including Austin proper and the surrounding communities of Pflugerville, Cedar Park, Round Rock, and Hutto. The same written pricing, documented photo record, and 365-Day Done Right Promise apply in every city we serve.
Serving Austin, TX - Our Local Coverage Area
We’re based in the Austin 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 Austin
It’s cedar pollen. Austin sits in the heart of Ashe juniper country, and December through February brings airborne pollen counts past 30,000 grains per cubic meter - high enough to yellow the sky. Because Austin’s caliche and limestone bedrock means virtually no basements, all ductwork runs through attics where that ultra-fine pollen settles into insulation and gets pulled through gaps in degraded duct seals every time your blower cycles. The fix is sealing the gaps, not buying a better filter. Call (737) 252-1285 and we’ll photograph the leaks before quoting repair.
It likely needs repair or replacement, not just cleaning. The flex duct installed in Cedar Park’s tech-boom subdivisions was rated for roughly 25 years under moderate conditions. Austin attics exceed 140°F for months each summer, and that thermal load degrades the inner liner and outer insulation faster than the manufacturer assumed. If your airflow has dropped at distant registers, or if a camera inspection shows collapsed or torn sections, cleaning won’t restore function. We document the condition with photos and quote repair or replacement with a written price before any work starts.
Yes, in most cases. Hyde Park bungalows often have flex duct that was replaced once already, and we can usually access plenum connections and major joints through existing attic hatches without disturbing finished spaces. The sealing work - mastic and mesh at every accessible joint - is performed in-place. We only recommend full replacement when the inner liner has collapsed or the insulation is compressed beyond recovery, and we photograph the condition so you can see why. Call (737) 252-1285 for a camera inspection and written scope.
Every duct run is in the attic, exposed to the full temperature swing. In markets with basements or conditioned crawlspaces, ductwork sits in 60-70°F year-round. In Austin, it’s 40°F in January and 150°F in August. That thermal cycling cracks mastic, separates collars, and degrades flex duct faster than in nearly any comparable market. It also means our technicians work in extreme heat during summer repairs, and we schedule accordingly. The upside: attic access is usually straightforward, with no crawlspace contortions required.
Yes. Our repair and sealing protocols meet or exceed NADCA guidelines for duct integrity testing, sealant application, and post-repair verification. We don’t treat NADCA compliance as a marketing badge; it’s simply how the work is done. The documented photo record we deliver - every run, before and after - is our own standard, exceeding NADCA documentation requirements, and it’s been part of every job since CleanRun’s first day in 2013.
Ready to see what’s actually happening in your attic? Call (737) 252-1285 for a free estimate. We’ll run a camera inspection, show you the photo record, and deliver a written price before any work begins. Every repair is backed by our 365-Day Done Right Promise, documented in writing on every job.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning Leander, serving Austin since 2013.