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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Before
AfterFast, Reliable Duct Repair & Sealing Across Humble
Duct repair and sealing in Humble typically runs $340-$780 for most homes, with full-system resealing on older properties reaching $890-$1,400. We dispatch crews to Humble from our Houston coordination office, and most appointments are scheduled within 2-4 business days. Call (346) 423-3631 for a written estimate before any work starts.
We’ve worked the Humble market since 2013, and the pattern is consistent: homes built during the 1970s-1990s along the Highway 59/69 corridor have ductwork that was never designed for the attic heat this region produces. In neighborhoods like Atascocita, Kenswick, and parts of Fall Creek, we regularly open attic access panels to find flex-duct joints that have separated, mastic seals that have turned to powder, and supply runs carrying debris from the original construction era plus whatever entered after Harvey. Our Duct Repair & Sealing crews document every finding with before-and-after photography, and every job carries a written price agreed before a single panel comes off.
Why CleanRun Air Duct Cleaning Spring Is Humble’s Preferred Duct Repair & Sealing Company
CleanRun has served more than 52,000 homes since 2013, and Humble represents a significant share of our northeast Harris County workload. The difference in this market is documentation: every duct run is photographed before and after, every price is written before work begins, and every technician is background-checked and uniformed under Haven Standard Clause 3: Verified Crews. Owner Tomas Reyes established this protocol from the first job, and it has not changed.
Humble customers specifically cite the photo record as their reason for choosing us over competitors. When a homeowner can see the 3-inch debris build-up at the first elbow, or the crack in the mastic where attic heat has done its damage, the need for repair becomes self-evident. We do not sell; we show.
Our response time to Humble is typically 2-4 business days for standard scheduling, with dispatch coordinated from our Houston office. We know the local housing stock: slab foundations, unconditioned attics, original flex duct from the Reagan and Bush administrations. That familiarity means faster diagnosis and fewer return visits.
The 365-Day Done Right Promise applies to every Humble job in writing. If the work is not right, we make it right. Not a policy subject to manager approval. A written guarantee.
Our Duct Repair & Sealing Services in Humble
Duct Sealing
Most Humble homes lose 20-30% of conditioned air through leaks in the duct envelope, according to Department of Energy estimates. In our market, that leakage is concentrated at flex-duct collars, plenum seams, and register boots where mastic has failed under thermal stress. Our sealing protocol uses professional-grade mastic sealant and metal-backed tape rated for attic temperatures exceeding 150°F, applied after negative-pressure extraction removes loose debris. A typical duct sealing job in Humble runs $340-$620 for a single-system home, with larger two-system properties reaching $780-$890. We test static pressure before and after to verify the seal.
Flex Duct Repair
Flex duct, the ribbed plastic tubing with fiberglass insulation that dominates Humble’s attic spaces, has a functional lifespan of 15-25 years. Much of what we encounter in Atascocita and Kenswick has exceeded that. The insulation compresses, the inner liner tears, and the collars separate from the plenum or register boots. We replace damaged sections with new flex duct sized to the original CFM load, secure collars with draw bands and mastic, and photograph every connection. Flex duct repair in Humble typically costs $180-$340 per run, with whole-system replacement on larger homes reaching $620-$1,100.
Metal Duct Repair
Older Humble homes and some custom builds along the FM 1960 corridor still use galvanized steel ductwork. Metal ducts do not degrade from heat the way flex does, but their seams and joints are equally vulnerable. We repair separated seams with S-lock drives and seal with mastic rated for metal expansion. Where rust has penetrated from decades of condensation, we section in replacement metal or transition to flex where appropriate. Metal duct repair in Humble runs $280-$560 depending on accessibility and extent of corrosion.
Duct Insulation
Unconditioned Humble attics destroy duct insulation. When the R-value drops below R-6, the duct surface temperature falls below the dew point, and condensation begins. We reinsulate with foil-faced fiberglass wrap or replace the duct entirely if the inner liner is compromised. Duct insulation work in Humble typically runs $240-$480 per run, with full-system reinsulation on a single furnace reaching $680-$1,200.
What happens when you call
- 1
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 Humble
Our equipment roster includes Nikro negative-pressure extractors, Honeywell media filters, and Aprilaire whole-home air cleaners - brands customers can research independently before we arrive. We stock common flex-duct diameters, collar sizes, and mastic compounds for Humble jobs, which means most repairs are completed in a single visit without waiting on parts. For homes with Abatement Technologies HEPA filtration or Guardsman UV systems, we carry replacement lamps and housings. Every tool and material is named on the written scope before work begins.
Common Duct Repair & Sealing Problems We See in Humble Homes
- Harvey-era duct contamination in remediated homes. Contractors rebuilt drywall and replaced flooring after 2017, but many never touched the ductwork. We still find visible mold growth and silt residue inside supply runs in homes that were “fully remediated” years ago. The camera does not lie.
- Thermal degradation of mastic seals in unconditioned attics. Attic temperatures in Humble routinely exceed 130-140°F from May through September. Standard mastic rated for 120°F cracks and powders within 5-7 years. We use high-temp formulations rated for continuous exposure above 150°F.
- Flex-duct separation at collars due to vibration and heat cycling. The near-continuous, nine-plus-month AC season in Humble keeps ducts expanding and contracting daily. Draw bands loosen. Collars slip. Airflow drops. We secure with double-banded mechanical connections and mastic backup.
- Condensation-driven mold in supply ducts. Humble’s position adjacent to Lake Houston keeps ambient humidity elevated year-round. Any gap in the duct envelope allows moist attic air to meet cooled supply air, and mold colonizes within 48-72 hours on organic debris. Sealing the envelope stops the moisture source.
Pricing for Duct Repair & Sealing in Humble, TX
We publish ranges because Haven Standard Clause 1 requires a written price before any work starts. Here is what duct repair and sealing actually costs in the Humble market:
| Service | Typical Range in Humble |
|---|---|
| Duct sealing, single system (mastic + tape) | $340-$620 |
| Duct sealing, two-system home | $780-$890 |
| Flex duct repair, per run | $180-$340 |
| Flex duct replacement, whole system | $620-$1,100 |
| Metal duct repair, per section | $280-$560 |
| Duct insulation, per run | $240-$480 |
| Full-system reinsulation | $680-$1,200 |
What moves a job to the higher end: two or more HVAC systems, attic accessibility restrictions (steep pitch, limited hatch size), extensive flood-era contamination requiring pre-cleaning, or metal ductwork with rust penetration requiring section replacement. What keeps it lower: single system, open attic, localized repair at one or two joints. Every estimate is free, every price is written, and every scope includes the photo record. Call (346) 423-3631 for your specific number.
We Also Serve Cities Near Humble
Our crews work the full northeast Harris County and north Houston corridor, including Humble, Spring, Houston, Galena Park, and Tomball. Dispatch and scheduling are coordinated from our Houston office, with local routing optimized for same-day travel to all listed markets.
Serving Humble, TX - Our Local Coverage Area
We’re based in the Humble 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 Humble
Yes. In the FM 1960/Atascocita corridor, we regularly open systems in homes that underwent structural remediation after Hurricane Harvey and find visible mold growth and silt residue inside supply runs that were never replaced. The pattern is specific to this low-lying northeast Harris County pocket and is rarely encountered at the same frequency in higher-elevation suburbs like The Woodlands or Baytown. If your home was remediated but the ductwork was not addressed, a camera inspection will show the condition. Call (346) 423-3631 for a free estimate.
Attic temperatures in Humble routinely reach 130-140°F in summer, which degrades standard mastic seals within 5-7 years and causes flex-duct collars to separate from thermal expansion and contraction. We use mastic compounds rated for continuous exposure above 150°F and double-banded mechanical connections at every collar. The sealing work we perform is designed for this thermal environment, not for milder climates. Call (346) 423-3631 for a written scope and price.
Humble’s position immediately adjacent to Lake Houston and within the San Jacinto River watershed keeps ambient humidity persistently elevated, accelerating condensation inside supply ducts where the envelope is compromised. The near-continuous, nine-plus-month AC season keeps ducts cycling constantly, so any moisture that enters has no dry period to evaporate. Combined with organic debris from decades of accumulation, the conditions are ideal for mold colonization. Sealing the duct envelope eliminates the moisture source. Call (346) 423-3631 for an inspection.
Yes. Humble’s slab-built homes from the 1970s-1990s typically route all ductwork through unconditioned attics, making flex-duct runs accessible for repair or replacement. We size new flex to the original CFM load, secure collars with draw bands and mastic, and verify airflow at the register before closing the attic. In the Atascocita area off FM 1960, we opened a 1980s slab home whose attic flex runs had separated at the collar, and our HEPA-filtered negative pressure rig pulled pounds of flood-era silt out of the supply ducts. Camera inspection showed the old mastic had cracked in the attic heat, so we re-sealed the joints, replaced a crushed flex section, and returned the system to proper static pressure. The homeowner noticed stronger airflow at the registers immediately. Call (346) 423-3631 for a written estimate.
In the 1970s-1990s homes along Humble’s 59/69 corridor, duct sealing fixes three interconnected problems: conditioned air escaping into the attic (raising utility bills), unconditioned attic air being drawn into the supply (carrying heat, humidity, and particulate), and the pressure imbalances that strain the HVAC equipment. The sealing work is structural, not cosmetic. We test static pressure before and after to verify the repair. A typical sealed system in Humble shows 15-25% improvement in delivered airflow. Call (346) 423-3631 for a written price before any work starts.
CleanRun serves Humble with documented results, written prices, and verifiable credentials. Every job includes a before-and-after photo record of every duct run, delivered as a standard deliverable. The 365-Day Done Right Promise is backed in writing on every job. All technicians are background-checked, uniformed, and identified by name before arrival under Haven Standard Clause 3: Verified Crews. Equipment includes Nikro, Honeywell, and Aprilaire - brands you can look up before we arrive.
Call (346) 423-3631 to schedule your free estimate. A live person answers, 24/7. Written price before work starts. Photo record when we leave. No exceptions.
Written by Tomas Reyes, Owner at CleanRun Duct Repair & Cleaning, serving Humble since 2013.