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 runs $450-$1,800 depending on system size and damage extent, with most flex-duct replacement jobs completed in a single scheduled day. If your home was built between the mid-1990s and mid-2000s, your original builder-grade flex duct is likely at or past its service life, especially given the post-Harvey moisture load and 130°F attic temperatures common here. Call (346) 666-7165 for a free written estimate before any work begins - that’s Haven Standard Clause 1.
We dispatch crews to Cinco Ranch from our Houston office, and we know the subdivisions - Grand Lakes, South Lake, Cinco Ranch Southwest - well enough to know which builders ran flex duct through which attic routes. That matters when we’re tracing a moisture stain or static-pressure problem back to a crushed return run above a second-story hallway.
Why CleanRun Air Duct Cleaning Katy Is Cinco Ranch’s Preferred Duct Repair & Sealing Company
We’ve served the Katy-Cinco Ranch corridor since 2013, and our documented photo record - before/after shots of every duct run, delivered as a standard job record - was built partly in response to what we saw here after Hurricane Harvey. Homeowners needed evidence insurers would accept. We still provide that same documentation on every visit.
Our technicians are background-checked, uniformed, and identified by name before arrival - Haven Standard Clause 3: Verified Crews. Tomas Reyes, who leads CleanRun, requires that every Cinco Ranch job start with a written price and end with a photo packet. No exceptions.
The 365-Day Done Right Promise applies here exactly as it does everywhere we work: if the repair or sealing fails, we make it right, backed in writing on every job. Not a policy subject to manager approval. A written guarantee.
We answer calls with a live person, 24/7, and we offer a Free Second Opinion on any written estimate from another company. Bring their quote; we’ll put our number next to it in writing.
Our Duct Repair & Sealing Services in Cinco Ranch
Flex Duct Repair
Most Cinco Ranch homes still run the original flex duct installed by Newmark, Village Builders, or Perry Homes 15-30 years ago. The insulation layer collapses under sustained 130°F attic heat, and the inner liner tears at sag points or kinks where the duct was strapped too tight across long attic spans. We replace failed sections with new, properly supported flex duct - not patch jobs - and photograph the damage for your records. A typical flex-duct section replacement in Cinco Ranch runs $280-$650 per run depending on length and attic access.
Mastic Sealant Application
Foil tape fails in Cinco Ranch’s humidity. We seal supply boots, return plenums, and air handler cabinets with mastic sealant - a brush-applied compound that remains flexible and airtight through thousands of thermal cycles. On a multi-zone system in a 3,500 sq ft Grand Lakes home, this can mean 15-25 individual seal points. Mastic sealing as a standalone service typically runs $350-$800 for Cinco Ranch homes, or it’s included as part of larger repair scope.
Air Leak Repair
Attic air leaks back into Cinco Ranch ductwork through failed boots and plenum seams, pulling 130°F dust and humidity directly into your supply air. We pressure-test the system, locate leaks with smoke pencil or blower-door assistance, then repair and seal. The goal is measurable: we want supply air temperature at the register within 2-3 degrees of design spec. Air leak repair on a multi-zone Cinco Ranch system generally runs $400-$950.
Metal Duct Repair
Some Cinco Ranch homes, particularly earlier Perry Homes builds, used galvanized metal trunk lines with flex take-offs. We repair separated seams, rust-through from condensation, and damaged dampers. Metal repair requires different tools - sheet metal screws, S-cleats, and proper sealants - and we stock fittings sized for the ductwork common to this market.
Duct Insulation
When flex duct insulation has degraded but the inner liner remains intact, we may recommend insulation wrap or full duct replacement depending on R-value loss and moisture contamination. In Cinco Ranch’s climate, R-6 is minimum; we see many original R-4.2 installations that are now compressed to half their thickness.
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 agitation systems for mechanical cleaning inside duct runs, Abatement Technologies HEPA-filtered negative-air machines for containment during mold remediation, and Aprilaire media filters and humidistat controls we install when replacing damaged components. We don’t invent performance claims beyond manufacturer specifications - we name these brands so you can look them up independently and know what equipment will be in your attic. Guardsman protective materials and Nikro extraction tools round out what we bring to Cinco Ranch jobs. Parts for common Cinco Ranch system configurations are stocked locally, so we’re not waiting on a Houston warehouse for standard repair items.
Common Duct Repair & Sealing Problems We See in Cinco Ranch Homes
- Original flex duct sagging and kinking in attics. The long runs required by 2,500-4,500 sq ft floor plans in subdivisions like South Lake Village were often strapped with inadequate support spacing. After 15-30 years of heat cycling, the wire helix relaxes and the duct crushes flat, creating static pressure that overworks the blower motor and starves distant rooms of airflow.
- Mastic and foil-tape seal failure at boots and plenums. Cinco Ranch’s 85-90% summer humidity and near-year-round cooling operation keeps duct surfaces near dew point. Tape adhesive hydrolyzes; mastic from the original build was often applied too thin to survive this environment. Attic air and moisture leak back into the system through gaps you can’t see from the living room.
- Post-Harvey condensation-driven microbial growth. Thousands of Cinco Ranch homes experienced attic moisture intrusion in August 2017 even without visible flooding. Condensation inside ductwork, especially at supply boots and return plenums, created mold colonization that went undetected for years. We screen for this history before every job - it’s a known local pattern.
- Missed failed sections in multi-zone systems. A one-size cleaning without camera inspection leaves crushed flex or moldy boots unaddressed. The sheer duct length in these large homes makes it easy to assume the system is “fine” because one zone blows cold. We inspect every run.
Pricing for Duct Repair & Sealing in Cinco Ranch, TX
Here’s what duct repair and sealing actually costs in this market. These are whole-system or per-scope ranges, agreed in writing before work starts - no per-vent pricing, no teaser coupons that balloon once the van is in your driveway.
| Service Scope | Typical Range in Cinco Ranch |
|---|---|
| Mastic sealant application (standard multi-zone home) | $350 - $800 |
| Flex duct section replacement (per run) | $280 - $650 |
| Air leak detection and repair (full system) | $400 - $950 |
| Multi-zone flex duct remediation with sealing | $1,200 - $1,800 |
| Post-moisture camera inspection with documentation | $180 - $320 |
What moves a job toward the higher end: attic access difficulty, number of zones, extent of moisture damage requiring source removal under negative pressure, and whether insurance documentation is needed. What we don’t do: quote a low arrival fee, then discover “unexpected” problems. We inspect, photograph, and write the full scope before you decide. Call (346) 666-7165 - estimates are free, and the price you approve is the price you pay.
We Also Serve Cities Near Cinco Ranch
Our crews work throughout the west-Houston corridor, including Cinco Ranch and neighboring Katy, Brookshire, Mission Bend, and Pecan Grove. Scheduling and dispatch are coordinated from our Houston office, with local routing that keeps drive time minimal for appointments in these communities. If you’re unsure whether your address falls in our standard service radius, call and we’ll confirm - no charge for the conversation.
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
It depends on what the camera shows and what moisture readings confirm. If the inner flex duct liner is intact, insulation is not saturated, and microbial growth is superficial, source removal with agitation tools under negative pressure and HEPA filtration may be sufficient. If the insulation is wet through, the liner is delaminated, or mold has penetrated the duct wall, replacement is necessary - and we document that distinction with photos, moisture meter readings, and failed-section notes so your insurer can see why cleaning wasn’t adequate. Call (346) 666-7165 and we’ll inspect before quoting either approach.
Every CleanRun job includes a Documented Photo Record - before/after photos of every duct run, plus moisture readings and written scope notes. For insurance purposes, we specifically photograph the failed section, measure and record moisture content at multiple points, and note the manufacturer date and material condition of the original duct. In the Grand Lakes area of Cinco Ranch, our tech pulled a camera inspection through a 2003 Village Builders two-story and found the original flex duct crushed and sweating along a return run in the attic, with visible microbial growth around a supply boot after years of high humidity. We performed source removal with agitation tools under negative pressure and HEPA filtration, then replaced the failed flex section and sealed every register boot and the air handler cabinet with mastic sealant instead of relying on leaky foil tape. The homeowner’s documentation packet - before/after photos, moisture readings, and the failed-section notes - was enough for their insurer to accept the claim.
Probably not, if it hasn’t been replaced. Original builder-grade flex duct has a typical service life of 15-25 years, and Cinco Ranch’s 130°F-plus attic temperatures accelerate insulation breakdown. Houston’s near-year-round cooling demand keeps those systems running 9-10 months annually. The post-Harvey moisture load also makes Cinco Ranch duct work fail on a much faster clock than in drier Texas markets like Dallas. We recommend a camera inspection to verify condition rather than assuming. Call (346) 666-7165 for a free estimate.
We start with a full-system pressure test and camera inspection of every duct run, not just the obvious ones. On a typical 3-zone, 3,500 sq ft home in South Lake or Grand Lakes, that can mean 12-18 individual supply and return runs. We identify crushed or disconnected flex, failed seals at boots and plenums, and insulation degradation. Repair scope is written item by item - which runs get replaced, which get sealed, which are intact - and priced as a flat scope, not per-vent. Mastic sealant is applied to all repaired connections. The system is pressure-tested again before we leave. You’ll receive the photo record and written scope as standard deliverables.
Yes, if attic air is leaking into your supply system through failed seals. Unconditioned attic air in Cinco Ranch routinely carries 85-90% relative humidity; every cubic foot that leaks into your ducts adds moisture your evaporator coil must then remove. Proper mastic sealing at boots, plenums, and the air handler cabinet can reduce this infiltration significantly. It won’t fix an oversized AC unit or poor drainage, but it removes one major humidity source we can actually measure and verify. Call (346) 666-7165 and we’ll pressure-test to quantify the leak before quoting seal work.
Ready to get your Cinco Ranch ductwork inspected, documented, and repaired under a written price? Call (346) 666-7165. A live person answers, 24/7. We’ll schedule a free estimate, deliver a written scope before any work starts, and back every repair with our 365-Day Done Right Promise and the full H.A.V.E.N. Standard. Your documentation packet - photos, moisture readings, and scope notes - is included on every visit.
Written by Tomas Reyes, Owner at CleanRun Duct Repair & Cleaning, serving Cinco Ranch since 2013.