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.
Fast, Reliable Duct Repair & Sealing Across Cedar Park
Duct repair and sealing in Cedar Park typically costs $280-$650 for most residential jobs, with flex-duct replacement running higher when attic runs are involved. We’re the team that shows up with a written price in hand before touching a single panel. Our crews dispatch from the Austin office and serve Cedar Park daily - from the newer builds along Ronald Reagan Boulevard to the established streets of Buttercup Creek and the winding lots of Twin Creeks. If your second-story bedrooms won’t hold temperature, your utility bills have climbed without explanation, or you’re catching that distinctive cedar-season must every January, the problem is usually in the attic runs, not the HVAC unit itself. Call (737) 259-5752 and we’ll put a real number next to your job before any work starts.
Why CleanRun Air Duct Cleaning Round Rock Is Cedar Park’s Preferred Duct Repair & Sealing Company
We’ve been in Cedar Park homes since 2013, and the pattern is consistent enough that our technicians now carry extra flex-duct support straps and mastic sealant on every truck. The 52,000+ homes we’ve served include hundreds in Cedar Park proper, and the photo records from those jobs sit in our files - sagging attic runs in Twin Creeks, crushed flex at plenum collars in Buttercup Creek, caliche dust loads heavy enough to measure in cups, not teaspoons.
Our 365-Day Done Right Promise applies in Cedar Park exactly as it does everywhere else: if the work isn’t right, we make it right, backed in writing on every invoice under Haven Standard Clause 1. No manager approval needed. No “policy review.” The written price you receive before work starts is the price you pay. Period.
Every technician is background-checked and uniformed under Haven Standard Clause 3: Verified Crews. You’ll get a name and photo before arrival, not a vague window and a knock at the door. And every job concludes with a Documented Photo Record - inside every duct run, before and after - delivered as a standard deliverable, not an upsell.
We’re also the company that will look at a competitor’s written estimate and put our number next to it for free. Bring the quote. We’ll show you where the scope differs and why.
Our Duct Repair & Sealing Services in Cedar Park

Flex Duct Repair
This is the work we do most often in Cedar Park. Those early-2000s production-builder homes - DR Horton, Lennar, Pulte - were framed with long flex-duct runs through unconditioned attics that hit 130°F+ in summer. The liner degrades. The support straps fail. The run sags into a low-point debris trap that collects caliche dust from nearby construction, cedar pollen from December through February, and years of lint pathway debris. We re-support the run, replace crushed or torn sections, and photograph every foot so you can see what was actually done. Typical flex-duct repair in Cedar Park runs $340-$580 depending on run length and attic access.

Mastic Sealant Application
Metal tape fails. That’s not an opinion; it’s what we find when we open plenum boxes and boot connections in Cedar Park attics. Mastic sealant - the brush-applied, fiber-reinforced compound we use on every metal-to-flex and metal-to-metal joint - creates a permanent seal that moves with thermal expansion. We apply it to plenum collars, register boots, and any point where conditioned air might leak into unconditioned space. A typical mastic sealing job in Cedar Park runs $280-$420 for a standard single-system home.

Air Leak Repair
Leaks at the air handler collar, torn flex at sharp bends, separated joints where vibration has worked tape loose - these aren’t “efficiency issues.” They’re the reason your blower motor runs longer, your filter loads faster, and your upstairs never matches the thermostat setting. We pressure-test the system, locate the leaks with smoke pencil or theatrical fog, repair with proper materials, and verify with post-repair static pressure measurement. Air leak repair in Cedar Park typically falls in the $260-$490 range.

Duct Insulation
When attic flex has degraded past the point of repair, or when metal ductwork in unconditioned space is sweating condensation into your ceiling, we replace or supplement insulation with formaldehyde-free duct wrap or pre-insulated flex. Cedar Park’s near-continuous HVAC load - cooling May through October, then heating through cedar season - makes proper insulation a real efficiency factor, not a theoretical one. Duct insulation work in Cedar Park generally runs $380-$720.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
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.
Before
AfterTrusted Brands We Service in Cedar Park
Our trucks carry professional-grade equipment from Rotobrush, Nikro, and Honeywell - brands you can look up independently before we arrive. We don’t use shop vacs with adapter kits. For sealing and repair work, we stock mastic compounds, mechanical fasteners, and replacement flex rated for the temperature swings Cedar Park attics deliver. Parts availability means most Cedar Park repairs finish same visit. No waiting on a warehouse in another metro.
Common Duct Repair & Sealing Problems We See in Cedar Park Homes

- Undersupported flex-duct runs sagging into debris traps. In Buttercup Creek and Twin Creeks, we routinely find original runs that were strung too loose across attic trusses. The low point collects caliche dust, cedar pollen, and lint until airflow is choked. The camera shows it clearly. The fix is re-support and often section replacement.
- Flex liner tearing at the air handler collar. Cedar Park’s 130°F+ attic temperatures degrade the liner adhesive over 10-15 years. The tear leaks conditioned air directly into unconditioned space. Your blower runs longer. Your bill climbs. The repair is collar replacement with proper mechanical fastening and mastic seal.
- Caliche dust loading from surrounding construction. Cedar Park’s continued growth means established subdivisions border active development. The fine limestone dust infiltrates return systems, loads the blower motor, and clogs registers faster than homeowners expect. We find it packed against evaporator coils and in filter housings.
- Construction-era debris in “clean” 14-year-old systems. Homeowners who bought new in 2010-2015 assume the ducts are still clean. They’re not. The photo record from our Cedar Park jobs shows otherwise - drywall dust, wood shavings, and the accumulated debris of a decade-plus of continuous HVAC operation.
Pricing for Duct Repair & Sealing in Cedar Park, TX
Here’s what duct repair and sealing actually costs in the Cedar Park market, based on jobs we’ve completed with written prices delivered before work started:
| Service | Typical Range in Cedar Park |
|---|---|
| Mastic sealant (single system) | $280-$420 |
| Air leak repair (localized) | $260-$490 |
| Flex duct repair (single run) | $340-$580 |
| Flex duct replacement (multiple runs) | $580-$950 |
| Duct insulation (partial system) | $380-$720 |
Factors that move the number: attic access difficulty, run length, whether the plenum itself needs resealing, and whether we find secondary damage (crushed sections, collapsed liner) once the camera’s inside. The price we write down before starting includes all of it. No per-vent add-ons. No “oh, we also found…” surprises after the work begins. Call (737) 259-5752 for an exact quote - estimates are free, and we’ll put it in writing while we’re there.
We Also Serve Cities Near Cedar Park

Our crews work daily in Leander, Round Rock, Pflugerville, and Georgetown, but Cedar Park remains a core service area with dedicated routing and local parts stock. The conditions that damage ducts here - Ashe juniper pollen, caliche dust, extreme attic temperatures - are concentrated in this corridor in ways that don’t replicate even in nearby markets.
Serving Cedar Park, TX - Our Local Coverage Area
We’re based in the Cedar Park 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 Cedar Park

Every 3-4 years for properties on unpaved roads or with significant open land exposure, versus 5-7 years for interior suburban lots. The dust loading from limestone caliche roads and the pollen intake from surrounding Ashe juniper mean rural Cedar Park systems accumulate debris faster. If you burn wood for supplemental heat, inspect annually - smoke particulate embeds in duct liner and accelerates degradation. Call (737) 259-5752 and we’ll assess your specific property’s loading rate.
It’s both. Smoke particulate embeds in flex-duct liner; standard cleaning won’t fully remove it. If the smell persists after professional cleaning, the liner itself is likely saturated and the duct run needs replacement. We also check for backdrafting - negative pressure in the return system can pull smoke from the fireplace directly into ducts, which is a combustion safety issue requiring immediate repair. Call (737) 259-5752 for inspection.
Yes - Cedar Park sits at the epicenter of Ashe juniper country, and the ultra-fine pollen (0.02mm) passes standard filters and embeds in duct liner. HVAC systems in Cedar Park pull that pollen continuously during heating season. We’ve photographed cedar pollen accumulation inches thick in returns that homeowners assumed were “just dust.” Sealing leaks and repairing degraded flex reduces the intake pathway significantly.
Yes. We routinely repair ductwork and mini-split connections in Cedar Park outbuildings. These systems often use undersized flex or improvised connections that fail faster than residential standards. The same written pricing and photo documentation applies. Note that outbuilding work may require longer service windows due to equipment staging.
Cedar Park’s 2010-2015 production builds used flex-duct through 130°F+ attics with minimal support spacing. The liner adhesive fails in that thermal environment within 10-15 years. Add caliche dust loading and cedar pollen infiltration, and you have degraded runs in homes that “should” be fine. Age of the house doesn’t equal condition of the ductwork - the camera shows the real story. Call (737) 259-5752 for a free inspection with photo documentation.
A homeowner in Twin Creeks called us because the second-story bedrooms never held temperature and her January cedar-season sneezing had gotten worse every year since 2009. Our tech ran a camera inspection and found a sagging attic flex run - collapsed liner and a six-inch pool of caliche dust, cedar pollen, and lint pathway debris at the low spot - then re-supported the run, replaced the crushed section, and sealed the plenum and boot connections with mastic. Post-job static pressure dropped and her returns finally read the same airflow as the downstairs supply and return ducts. The before-and-after photos were in her inbox that evening, standard deliverable, no extra charge.
That’s our Duct Repair & Sealing work in Cedar Park. Written price first. Documented result last. Everything in between is accountable.
Ready to see what’s actually in your attic runs? Call (737) 259-5752 for a free estimate. We’ll put the scope and price in writing before any work starts, back it with the 365-Day Done Right Promise, and deliver a photo record of every foot we touch.
Written by Tomas Reyes, Owner at CleanRun Duct Repair & Cleaning, serving Cedar Park since 2013.




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