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 Cinco Ranch
Duct repair and sealing in Cinco Ranch typically costs $380-$1,200 depending on whether we’re sealing accessible joints or replacing degraded flex runs, and most jobs are scheduled within two business days. We’re familiar with the specific failure patterns in Cinco Ranch’s 1995-2012 build-out homes - the cracked inner liners, the sagging flex joints, the return plenums that took on Harvey water and were never opened. Our crews dispatch from the Houston office and carry mastic, metal tape, and replacement flex duct sized for the large two-story homes that dominate this master-planned community. Call (346) 248-1474 and we’ll put a written price in front of you before any panel comes off.
Why CleanRun Air Duct Cleaning The Woodlands Is Cinco Ranch’s Preferred Duct Repair & Sealing Company
We’ve been serving Cinco Ranch since the first wave of homes started showing age-related duct failures around 2015. Our Duct Repair & Sealing team knows the difference between a Perry Homes plenum layout and a Lennar multi-zone trunk line - not because we memorized builder brochures, but because we’ve photographed the inside of hundreds of them.
Our reviews from Cinco Ranch customers consistently mention two things: the photo record showing exactly what was wrong, and the written price that didn’t change once the truck arrived. We’re not the fastest to Cinco Ranch - we’re not going to pretend we are - but we’re predictable. You get a background-checked, uniformed technician who identifies himself by name before he arrives, a written scope under Haven Standard Clause 1, and a 365-Day Done Right Promise backed in writing on every job.
We also understand the local geography. Homes south of Cinco Ranch Boulevard sit lower in the watershed and showed more Harvey intrusion. The larger estates near Golf Course Road have longer duct runs with more sag points. These aren’t trivia - they affect what we find and what it costs to fix.
Our Duct Repair & Sealing Services in Cinco Ranch
Flex Duct Repair
Cinco Ranch’s original flex-duct systems are now 12-28 years old, and Katy-area attics hitting 140-155°F have baked the foil-and-fiberglass liner past its design life. We replace crushed, sagging, or cracked flex runs with new R-8 insulated duct sized to the original CFM load. On a 4,200 sq ft Perry-built two-story off Cinco Ranch Boulevard, our techs ran camera inspection through the supply and return ducts and found the original flex runs sagging between joints in the attic, with the inner liner cracked and shedding fiberglass into the airstream. After source removal under negative pressure with HEPA filtration, we rebuilt the crushed runs, re-sealed every joint with mastic, and closed the disconnected return plenum that had been pulling attic air into the system. The homeowner’s first-floor registers stopped throwing dust and the system’s static pressure dropped enough for the blower motor to run noticeably quieter. Flex duct repair in Cinco Ranch typically runs $450-$890 per run depending on length and attic accessibility.
Mastic Sealant Application
Mastic is a water-based sealant we brush onto every joint, plenum seam, and register boot connection. It remains flexible for decades, unlike foil tape that degrades in attic heat. In Cinco Ranch’s humidity - averaging above 70% RH most of the year - mastic is the only sealant we trust for long-term performance. We apply it to every accessible joint after repair work, and we photograph the application as part of your Documented Photo Record. A full-system mastic seal in a typical 3,200 sq ft Cinco Ranch home runs $380-$620.
Air Leak Repair
Volume-builder multi-zone layouts in Cinco Ranch create long runs with many joints. Flex duct pulls apart at connections. Return plenums separate from trunk lines. We pressure-test the system, locate leaks with smoke pencil and thermal imaging, then repair with mechanical fasteners and mastic. Air leak repair in Cinco Ranch typically costs $290-$540 for localized fixes, or $680-$1,200 for whole-system sealing on homes with multiple zones and extensive degradation.
Metal Duct Repair
Some Cinco Ranch homes - particularly custom builds near the golf course - have galvanized trunk lines and plenums. We repair separated seams, replace rusted sections, and seal with mastic rated for metal substrates. Metal duct repair runs $520-$980 depending on access and extent.
Duct Insulation
When we replace flex duct in Cinco Ranch attics, we use R-8 insulation minimum. For existing runs with intact liners but degraded outer insulation, we can apply closed-wrap insulation sleeves. Duct insulation work ranges from $340-$760.
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 Cinco Ranch
Our equipment roster includes Rotobrush and Nikro for source removal, plus Honeywell and Aprilaire components for filtration and zoning repairs. We stock common flex-duct diameters, mastic, and register boots sized for the large homes in Cinco Ranch, which means most repairs don’t wait on parts. If your system uses a specific zoning panel or damper actuator, we’ll identify it during the initial camera inspection and source the correct replacement before we return - no improvisation, no “close enough.”
Common Duct Repair & Sealing Problems We See in Cinco Ranch Homes
- Cracked flex-duct liners shedding fiberglass into the airstream. The 140-155°F attic temperatures in Cinco Ranch accelerate degradation of the foil-and-fiberglass material used in 1995-2012 builds. Homeowners notice white dust on registers and increased allergy symptoms. Replacement, not cleaning, is required.
- Sag points and disconnected joints in long multi-zone runs. Volume builders used minimal support straps across 20-foot spans. Gravity and attic heat cause the duct to belly, separate at collars, and leak conditioned air into the attic while pulling attic air into the return.
- Hidden mold in first-floor return plenums post-Harvey. Technicians working Cinco Ranch post-Harvey jobs consistently find that homes where only flooring and drywall were remediated still show microbial growth inside return-air plenums at the first-floor level - because the plenum boxes sat in standing water but were never opened during the visible remediation process, leaving a hidden mold source recirculating through the entire duct system.
- Disconnected return plenums pulling unconditioned attic air. We find this in roughly one-third of Cinco Ranch homes over 15 years old. The plenum separates from the trunk line or the platform, and the system pressurizes the attic instead of the house. Energy bills climb. Rooms stay uneven.
Pricing for Duct Repair & Sealing in Cinco Ranch, TX
We publish ranges because Haven Standard Clause 1 requires a written price before any work starts - and that price should never be a surprise.
| Service | Typical Range in Cinco Ranch |
|---|---|
| Whole-system mastic seal (accessible joints) | $380-$620 |
| Localized air leak repair (1-2 joints) | $290-$540 |
| Flex duct repair / replacement (per run) | $450-$890 |
| Metal duct repair (trunk line section) | $520-$980 |
| Duct insulation (per run or wrap) | $340-$760 |
| Full system repair + seal (large multi-zone home) | $890-$1,200+ |
What moves the price: attic accessibility (blown insulation vs. walkable decking), number of HVAC zones, extent of liner degradation, and whether mold remediation is required before sealing. Every estimate is free, written, and valid for 30 days. Bring a competitor’s quote and we’ll provide a Free Second Opinion in writing - Haven Standard Clause 7.
We Also Serve Cities Near Cinco Ranch
Our crews serve Cinco Ranch locally, with dispatch and scheduling coordinated from our Houston office. We also work in The Woodlands, Tomball, Conroe, and Spring - but the duct failure patterns in each area differ based on build era, builder practices, and storm history. We don’t apply a generic template.
Serving Cinco Ranch, TX - Our Local Coverage Area
We’re based in the Cinco Ranch 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 Cinco Ranch
Because Cinco Ranch was built almost entirely between 1995 and 2012, the original flex-duct systems in its large two-story homes are now 12-28 years old, and attic temperatures of 140-155°F have baked the foil-and-fiberglass liner into a state where it cracks and sheds particulates directly into the airstream - a failure pattern tied to this build-out window, not to newer Katy subdivisions. Post-Harvey, many homes that had only flooring and drywall remediated still hide microbial growth inside first-floor return-air plenums that were never opened. Cleaning removes debris; it doesn’t rebuild cracked liners or reconnect separated plenums. Call (346) 248-1474 for a camera inspection and written scope.
Yes, and we find it regularly. The return-air plenums at the first-floor level sat in standing water but were rarely opened during visible remediation because they’re above the ceiling and behind the air handler. Moisture wicked into the fiberglass-lined boxes and created mold reservoirs that recirculate through the entire system. We photograph these conditions with borescope cameras and include the images in your Documented Photo Record. If mold is present, we remediate before sealing - sealing over active microbial growth violates every standard in our industry. Call (346) 248-1474 to schedule an inspection.
We start with a camera inspection of every accessible duct run, supply and return. Then we pressure-test the system to quantify leakage. Repairs follow: replacing cracked flex runs, rebuilding sag points with proper support, reconnecting separated plenums, and sealing every joint with mastic. We use negative-pressure extraction with HEPA filtration during any source removal to protect your home. The job concludes with a post-repair pressure test and your Documented Photo Record - before, during, and after photos of every run. A typical 3,200 sq ft two-story in Cinco Ranch takes one day. Call (346) 248-1474 for a written estimate with no obligation.
The Katy area averages above 70% relative humidity most of the year, which means any duct sweating or minor leak point becomes a sustained mold-growth site rather than a self-correcting condition. We use mastic sealant specifically because it remains flexible and watertight in humid attics, unlike tape products that degrade. We also verify that insulation is intact and properly sealed to the duct - because humid attic air contacting cold duct surfaces creates condensation, and condensation creates the conditions for mold. Proper sealing and insulation together prevent this cycle. Call (346) 248-1474 to assess your system’s vulnerability.
Yes. The large homes in Cinco Ranch - 2,500 to 5,500 sq ft with three or four HVAC zones - are exactly what our equipment is sized for. We use Rotobrush and Nikro systems with sufficient hose length and camera reach for multi-zone layouts. The challenge isn’t reach; it’s identifying which zone serves which room and whether the zone dampers are functioning. We map this during inspection and include the zone map in your written scope. Homes off Cinco Ranch Boulevard and in the southern sections near the watershed tend to have the most complex layouts. Call (346) 248-1474 and we’ll walk you through what we expect to find in your specific floor plan.
Ready for a written price and a documented result? Call CleanRun Air Duct Cleaning The Woodlands at (346) 248-1474. We’ll schedule a free inspection, deliver your written estimate under Haven Standard Clause 1, and show you exactly what we find inside your ducts before any work begins. Every job includes a Documented Photo Record and our 365-Day Done Right Promise - in writing, not just in marketing copy.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning The Woodlands, serving Cinco Ranch since 2013.