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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AfterTrusted Duct Repair & Sealing for Austin Homeowners
Learn how much Duct Repair & Sealing costs: in Austin it typically runs $280-$1,200 depending on the scope, with most single-room repairs falling in the $340-$650 range. CleanRun Air Duct Cleaning Austin has documented every duct repair with before-and-after photos since 2013, and every job starts with a written price delivered before any work begins. Call (737) 243-9544 for a free estimate with no obligation.
We’ve worked in Austin homes long enough to know what the camera usually finds: flex duct pulled loose at the plenum (the main distribution box where your HVAC system connects to the duct network) after years of attic heat cycling, metal seams that have opened from expansion and contraction through hundred-degree summers, and tape that turned to powder sometime around 2018. The result is conditioned air bleeding into your attic or crawl space while your system runs longer to hit the thermostat setpoint. In neighborhoods like Wells Branch and Lakeway, where many homes were built during the 2015-2020 construction surge, we’ve documented the same patterns repeatedly: ducts that passed inspection but weren’t sealed to the standard the homeowner assumed.
Our approach is straightforward. We photograph every duct run before touching anything. We deliver a written scope and price. We complete the repair or sealing under the H.A.V.E.N. Standard, with background-checked, uniformed technicians who identify themselves by name before arrival. Then we photograph again and deliver the documented photo record as part of your job file. The 365-Day Done Right Promise means if the work isn’t right, we make it right, backed in writing on every job, not just stated in marketing copy.
CleanRun is independently owned and operated under the Haven Standard, established in 2013, with 52,000+ homes served. Every one of those jobs had a written price before work started and a documented photo record when the crew left. We don’t use coupon pricing or per-vent bait-and-switch structures. We don’t do urgency theatre. We show you what we found, tell you what it costs, and document what we did.
What Our Duct Repair & Sealing Service Includes
Duct Sealing
Duct sealing closes the gaps, seams, and connection points where conditioned air escapes your duct system before reaching your rooms. In Austin’s climate, where attic temperatures routinely exceed 140°F in July and August, every cubic foot of cooled air that leaks into the attic is air your compressor worked to create that you’ll never feel. We seal using mastic compound or foil-backed tape rated for HVAC applications, applied after the surface is cleaned and prepped. Our crews use a smoke pencil or theatrical fog to verify seal integrity under operating pressure, and the result is photographed before we close any access panel.
Flex Duct Repair
Flex duct, the insulated flexible tubing common in Austin homes built after 1990, degrades from UV exposure, rodent activity, and compression from storage or maintenance work in attics. We find collapsed sections, kinks that restrict airflow, and insulation that has pulled away from the core, creating condensation points that stain ceilings. Our repair replaces damaged sections with new flex duct sized to the original CFM (cubic feet per minute) specification, supported at proper intervals to prevent sagging, and connected with mechanical fasteners rather than tape alone. In Pflugerville and Hutto, where rapid construction sometimes meant ducts were laid across trusses without proper support, we’ve replaced dozens of crushed flex runs that the homeowner only discovered when a room stopped heating or cooling evenly.
Metal Duct Repair
Galvanized steel ductwork, still common in older Austin neighborhoods like parts of Lost Creek and Jollyville, develops seam separation, corrosion at joints, and holes from rust or physical damage. Metal ducts also transmit noise more readily than flex, so a new rattle or whistle often signals a seam opening. We repair using sheet metal patches riveted in place, sealed with mastic, or replace sections where corrosion has compromised structural integrity. For metal plenums that have separated from the air handler, we reattach with proper flanges and fasteners rated for the vibration and pressure cycling of modern HVAC equipment.
Duct Insulation
Insulation on ductwork prevents thermal loss as air travels through unconditioned spaces. In Austin, where attics function as solar ovens for six months of the year, uninsulated or degraded insulation can raise supply air temperature by 8-15°F before it reaches the register (the vent cover in your room). We install foil-faced fiberglass insulation with proper vapor barriers, sealed at all seams, or replace existing insulation that has compressed, gotten wet, or been disturbed by rodents. The improvement is measurable: we’ve photographed supply register temperature drops of 10°F or more after insulation replacement in our Duct Repair & Sealing in Cedar Park homes with west-facing attics.
Mastic Sealant
Mastic is a thick, water-based sealant brushed or troweled onto duct seams and joints, curing to a flexible, durable seal that outlasts tape in high-temperature environments. Unlike duct tape, which degrades and turns adhesive to powder in Austin attic conditions, mastic remains intact through years of thermal cycling. We apply mastic to all longitudinal seams, transverse joints, and connections between the plenum and trunk lines, then verify coverage with visual inspection and pressure testing where appropriate. The application is photographed as part of the documented photo record, so you can see which joints were treated and which were already intact.
Air Leak Repair
Air leaks in duct systems range from obvious disconnected runs to pinhole corrosion and failed gaskets at equipment connections. We locate leaks using a combination of visual inspection, pressure differential testing, and, where helpful, thermal imaging to identify temperature anomalies that signal escaping air. Each leak is repaired with the appropriate method for the duct material and location, then verified sealed before the system is returned to service. In Round Rock and Leander, where some builders used lower-grade materials during the 2017-2021 construction boom, we’ve found and repaired leaks that were costing homeowners $40-$80 monthly in excess utility charges.
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.
Brands We Service for Duct Repair & Sealing
We regularly repair and seal duct systems connected to Honeywell air cleaners and media filters, particularly the F100 and F200 series common in Austin homes with allergy concerns. Our crews understand how these units integrate with the return plenum and can seal or repair ductwork without compromising the filter housing seal that maintains system efficiency. We’ve also worked extensively with Aprilaire humidifiers and dehumidifiers, including the 800 steam humidifier and 1850 dehumidifier lines, where duct modifications are often needed to accommodate proper airflow across the water panel or cooling coils.
Abatement Technologies negative-air machines and HEPA filtration systems appear in homes where prior mold remediation or air quality work has been performed, and we’re familiar with the sealed-duct requirements these installations demand. Guardsman UV-C air treatment systems, installed in the plenum or near the evaporator coil, require precise duct access and sealing to maintain both effectiveness and safety. Whether you have Honeywell, Aprilaire, or any other make, we can repair and seal your duct system while preserving the integrity of connected equipment. Our tool inventory includes Rotobrush, Nikro, and Abatement Technologies equipment for jobs requiring mechanical cleaning before sealing.
BeforeAfterSigns You Need Duct Repair & Sealing Right Now
- Rooms that won’t hold temperature. If your west-facing bedroom in Buda or Manor runs 6°F warmer than the thermostat setting while the rest of the house cools normally, the duct serving that room is likely leaking or restricted. We’ve traced this symptom to disconnected flex duct, crushed runs, or open seams that the homeowner couldn’t see from below.
- Dust accumulation immediately after cleaning. A properly sealed duct system should not pull attic or crawl space debris into your living space. If you’re wiping dust from surfaces within 48 hours of cleaning, your return ducts may be leaking in unfiltered air from the building envelope.
- Unexplained energy bill increases. Austin Energy rates have climbed, but a sudden 20%+ spike in summer cooling costs often signals duct leakage forcing your system to run longer. We can measure the leakage and show you the likely cost impact in writing before any repair begins.
- Whistling or rattling from vents when the system runs. These sounds indicate pressure imbalances or loose duct components. A whistle typically means air escaping through a small gap at high velocity; a rattle suggests a loose connection or failing support. Both worsen without attention and can damage connected equipment.
- Condensation or water stains near registers. When cool supply air leaks into the wall or ceiling cavity around a register, the temperature differential causes moisture accumulation. In Austin’s humidity, this creates staining, mold risk, and eventual drywall damage. The root cause is usually a poorly sealed boot (the metal fitting connecting duct to register) or missing insulation.
Our Duct Repair & Sealing Process - Step by Step
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System inspection and photo documentation. We start every Austin duct repair by photographing the accessible ductwork, plenum, and connections with your system running. This establishes baseline conditions and often reveals problems the homeowner hadn’t noticed: a sagging flex run, a tape joint that has completely failed, or insulation pulled back from a hot attic surface.
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Leak detection and scope development. Using a smoke pencil, pressure gauge, or theatrical fog generator, we identify active leak points and measure system pressure where accessible. We then develop a written scope of repair with line-item pricing for each component. This scope is delivered to you before any work begins, under Haven Standard Clause 1: Written Price Before Any Work Starts.
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Repair and sealing execution. Our technicians complete the approved work using materials and methods matched to your duct type: mastic and mechanical fasteners for metal, proper support and connection hardware for flex, replacement insulation where needed. All work is performed by background-checked, uniformed crew members operating under Haven Standard Clause 3: Verified Crews.
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Verification and final photography. We re-test sealed joints, verify airflow at affected registers, and photograph every repaired or sealed duct run. These images become part of your documented photo record, delivered with your invoice. You see exactly what was done and where.
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Written warranty and job record delivery. Every Austin duct repair and sealing job concludes with the 365-Day Done Right Promise in writing, your photo record, and the final invoice matching the approved scope. If something isn’t right, we make it right. No manager approval required, no runaround.
How Much Does Duct Repair & Sealing Cost in Austin?
A typical single-room flex duct repair in Austin runs $340-$650, including access, repair, and sealing. Full-system mastic sealing for an average 2,000-square-foot home generally falls between $780-$1,200, depending on duct accessibility and the number of joints requiring treatment. Metal duct repairs, which often involve custom-fabricated patches or section replacement, range from $450-$950 per repair location. Duct insulation replacement adds $2.50-$4.50 per linear foot for standard flex duct, with plenum insulation costing more due to the larger surface area and access requirements.
Several factors move these numbers. Attic accessibility is the largest: a truss attic with a permanent floor and good lighting takes less time than a tight cape-style space with blown insulation that must be moved. The extent of damage matters too; a single disconnected joint is straightforward, while rodent-damaged flex requiring multiple section replacements and sanitizing takes longer and costs more. System age affects material compatibility: ducts from the 1980s and 1990s often use sizes and connection styles that require adaptation to modern components.
We price by the scope of work, not by the vent or by a teaser coupon that balloons once the truck arrives. Every estimate is free, written, and delivered before any work starts. We also offer a Free Second Opinion on any written estimate from another company: bring their quote, and we’ll put our number next to it in writing. No charge, no obligation.
What’s included: the inspection, photo documentation, written scope and price, all materials and labor, verification testing, final photography, and your job record with the 365-Day Done Right Promise. What’s not included: work outside the approved scope, HVAC mechanical repairs, or equipment replacement. If we find issues beyond duct repair during inspection, we’ll photograph them, explain them, and quote them separately for your approval.
Duct Repair & Sealing Near Austin - Our Service Area
CleanRun Air Duct Cleaning Austin serves homeowners throughout the metro area, from Duct Repair & Sealing in Lost Creek and Duct Repair & Sealing in Jollyville to Wells Branch, Pflugerville, Lakeway, Manor, Cedar Park, Round Rock, Buda, Leander, and Hutto. Most scheduled repairs are completed within a single visit; we don’t promise same-day dispatch because duct repair is diagnostic work that deserves proper time, not a rushed patch. Our crews carry the common flex duct sizes, mastic compounds, and connection hardware needed for most Austin-area residential systems, so material delays are rare.
In Lakeway and the hill country west of Austin, we account for longer attic runs and steeper roof pitches that affect access time. In Pflugerville, Hutto, and Manor, where construction from 2016-2022 left many homes with similar builder-grade duct installations, we’ve developed efficient protocols for the specific flex support and sealing failures that appear in those neighborhoods. Wherever you are in the Austin metro, our Duct Repair & Sealing in Austin follows the same process: written price first, documented work, accountable warranty.
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.
Frequently Asked Questions - Duct Repair & Sealing in Austin
Duct repair and sealing fixes the physical integrity of your duct system: closing leaks, reconnecting separated runs, replacing damaged sections, and restoring insulation. Duct cleaning removes accumulated debris from inside the ducts. You can have clean ducts that still leak 20-30% of your conditioned air, or sealed ducts that still need debris removal. We offer both services and can inspect to determine which your system needs, or whether it needs both.
Most single-room repairs or targeted leak sealing jobs take 2-4 hours. Full-system mastic sealing for an average home typically requires a full day, with larger or more complex systems taking longer. We schedule based on the scope we develop during your free estimate, not on a fixed appointment block that might rush the work or leave technicians idle. You’ll know the expected duration before approving the scope.
Single-room repairs typically run $340-$650, full-system sealing $780-$1,200, and metal duct repairs $450-$950 per location. The exact price depends on accessibility, damage extent, and materials needed. We deliver a written, itemized price before any work begins, and we never charge per vent or add surprise fees after starting. Call (737) 243-9544 for a free estimate with exact pricing for your home.
Yes. We regularly repair and seal duct systems connected to Honeywell air cleaners, Aprilaire humidifiers and dehumidifiers, and other major brands. Our crews understand how these components integrate with ductwork and take care to preserve their seals and airflow requirements during repair. We also work with Abatement Technologies and Guardsman systems where prior air quality work has been performed.
We do not advertise emergency dispatch because duct repair rarely requires immediate middle-of-night response. A completely disconnected duct in summer heat is uncomfortable, but it won’t damage your home if addressed within 24 hours. We answer calls live 24/7 and schedule urgent repairs as quickly as diagnostic thoroughness allows. If your situation is truly urgent, we’ll tell you honestly whether waiting for proper inspection serves your interests better than a rushed patch.
Every job is backed by the 365-Day Done Right Promise: if the work is not right, CleanRun makes it right, in writing on every invoice. This is not a manager-discretionary policy. It’s a contractual commitment. For materials, we use products rated for their application; manufacturer warranties apply where relevant. We also guarantee our written price: the approved scope is the approved price, period.
Clear a path to your HVAC system and attic access, and secure pets in a separate area. We need working space around the air handler and clear attic entry. If you have prior repair records or inspection reports, have them available; they help us understand your system’s history. We’ll handle protective coverings, tool staging, and cleanup. Payment is due upon completion unless prior arrangements have been made.
Schedule Your Duct Repair & Sealing Service in Austin Today
Call (737) 243-9544 to schedule your free estimate. You’ll speak with a live person, not a menu, and we’ll arrange a time for a technician to inspect your system, photograph what we find, and deliver a written price before any work begins. Every repair is documented, every price is guaranteed, and every job carries the 365-Day Done Right Promise. Or start at our home page to learn more about CleanRun Air Duct Cleaning Austin and the H.A.V.E.N. Standard.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning Austin, serving Austin, Lost Creek, Jollyville, and surrounding communities since 2013.