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 Pinehurst
Duct repair and sealing in Pinehurst, TX typically costs $280-$650 for most residential jobs, with flex duct replacement running higher when original 1970s-90s systems are involved. Our crews are scheduled through our Dallas-Fort Worth dispatch office and serve Pinehurst properties directly, carrying the equipment and mastic sealant inventory needed for same-visit completion on most calls. If your airflow has dropped, your energy bills have climbed, or you’ve noticed that yellowish film building up around your return grilles, the problem usually traces back to deteriorating duct connections or collapsed flex runs that are pulling unfiltered attic air into your system. Call (346) 248-1474 for a written estimate before any work begins.
Why CleanRun Air Duct Cleaning The Woodlands Is Pinehurst’s Preferred Duct Repair & Sealing Company
We’ve been documenting the inside of Pinehurst ductwork since 2013, and the photo records tell a consistent story. Homes here accumulate a resinous yellowish-brown film in return ducts that we rarely see at this concentration in open-lot neighborhoods to the south. That observation matters because it changes how we approach sealing and repair: mastic application has to account for this substrate, and flex duct connections that were merely sagging five years ago are now collapsing under the combined weight of debris and moisture.
Our Duct Repair & Sealing crews are background-checked and uniformed under Haven Standard Clause 3: Verified Crews. Technicians identify themselves by name before arrival, and every job starts with a written price delivered before a single panel comes off. Haven Standard Clause 1 requires it. The 365-Day Done Right Promise applies to every Pinehurst repair, backed in writing, not as a policy subject to manager approval.
We’ve served more than 52,000 homes since our founding, every one with a documented photo record of every duct run before and after work. Pinehurst customers receive that same standard deliverable: dated, labeled images showing what was found, what was sealed or replaced, and what the finished system looks like. You don’t have to trust our description. You can see it.
All calls are answered by a live person, 24/7. Scheduling to Pinehurst is coordinated from our Dallas-Fort Worth office, with crews carrying Rotobrush agitation tools, Nikro negative-pressure equipment, and Guardsman sealant products on every truck.
Our Duct Repair & Sealing Services in Pinehurst

Flex Duct Repair
The bulk of Pinehurst’s housing stock dates from the 1970s through the 1990s, when fiberglass flex duct was the standard. After four decades, that original ductwork has stiffened, sagged, or partially collapsed at plenum connections throughout the community. We were called to a 1980s home off Pinehurst Road where the return grille was caked in a yellowish-brown pine-pollen film and the original fiberglass flex duct had sagged and partially collapsed at the plenum. Using negative pressure and agitation tools, we performed source removal, sealed the failing connections with mastic, and restored proper airflow through the supply and return ducts. Flex duct repair in Pinehurst typically runs $340-$580 per run when the main trunk is intact. Full replacement of a deteriorated system starts around $1,200.

Mastic Sealant Application
Mastic is the only sealant we use on metal duct connections and repaired flex-plenum joints in Pinehurst. Tape fails in attic conditions here; the sustained humidity and temperature cycling degrades adhesive-backed products within two to three years. Mastic, properly applied, remains flexible and gas-tight for the life of the system. A typical mastic sealing job for a Pinehurst home with 8-12 supply runs runs $280-$450. We photograph every sealed joint as part of the standard Documented Photo Record.

Air Leak Repair
Leaks at duct seams and register boots pull unconditioned attic air into your system, and in Pinehurst that attic air carries a heavy pollen load plus the humidity that mold needs. Our crews pressurize the system to identify leaks, then repair with metal-reinforced mastic or replacement sections as the condition warrants. Air leak repair in Pinehurst typically costs $180-$420 depending on accessibility and the number of leaks found. Every repair location is photographed before and after.

Metal Duct Repair
Some Pinehurst homes, particularly those built in the 1970s with later additions, have galvanized metal trunk lines with rust-through at low points where condensation pools. We cut out deteriorated sections, fabricate replacements from matching gauge stock, and seal with mastic. Metal duct repair in Pinehurst runs $260-$520 for localized work. If the trunk line is extensively corroded, we provide a written replacement scope with line-item pricing.

Duct Insulation
When flex duct outer insulation has degraded or metal ducts lack adequate wrap, condensation forms on cold surfaces and feeds the mold cycle that Pinehurst’s humidity already encourages. We install fiberglass duct insulation with vapor-barrier jacket, sealed at all seams. Typical Pinehurst insulation work runs $320-$680 for a partial system, $1,100-$1,800 for full replacement of degraded wrap.

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.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Before
AfterTrusted Brands We Service in Pinehurst
Our trucks carry professional-grade equipment from trade-recognized brands: Rotobrush for agitation and contact cleaning, Nikro for negative-pressure extraction, and Guardsman for sealant and repair products. We stock mastic, flex duct, and connection hardware sized for the systems found in Pinehurst’s 1970s-90s housing stock, which means most repairs are completed in a single visit without waiting on parts. Customers can verify these manufacturer specifications independently; we name the equipment because we have nothing to hide about what goes into your home.
Common Duct Repair & Sealing Problems We See in Pinehurst Homes

- Original flex duct collapsing at plenum connections. The fiberglass duct installed in Pinehurst’s 1970s-90s building boom has exceeded its design life. We regularly find runs that have detached entirely from the plenum, blowing conditioned air into the attic and creating negative pressure that pulls pine pollen and humidity through every crack in the return path.
- Resinous pollen film restricting return airflow. Local technicians consistently find that return-air grilles and the first few feet of return ductwork in Pinehurst homes are coated with a yellowish-brown resinous film - pine pollen mixed with humidity - that acts like flypaper for mold spores and pet dander, a pattern far less common in the open-lot subdivisions of nearby Tomball or Spring where tree cover is thinner.
- Condensation-fed mold at evaporator-adjacent duct sections. Because AC systems in Pinehurst operate 9-10 months a year, evaporator coils and the ductwork immediately downstream stay wet for extended periods. The heavy overhead tree canopy typical of Pinehurst’s lots shades attics enough to keep temperatures moderate but traps moisture longer, accelerating mold colonization on the pollen-coated duct interior.
- Pressure imbalances from deteriorated ductwork pulling in unfiltered air. When supply ducts leak into the attic, the system compensates by drawing more air through return paths - and if those returns have gaps at the platform or grille, they’re pulling air from wall cavities, crawl spaces, and the garage. The result is exactly what you’d expect in a pollen-heavy environment: more debris, faster, everywhere the air goes.
Pricing for Duct Repair & Sealing in Pinehurst, TX
We publish ranges because Haven Standard Clause 1 requires a written price before any work starts, and that price should not be a surprise.
| Service | Typical Range in Pinehurst |
|---|---|
| Mastic sealant, standard system (8-12 runs) | $280-$450 |
| Air leak repair (localized) | $180-$420 |
| Flex duct repair per run | $340-$580 |
| Metal duct repair (localized) | $260-$520 |
| Duct insulation, partial system | $320-$680 |
| Full flex duct replacement | $1,200-$2,400 |
What moves a job toward the higher end: multiple attic access points requiring setup and breakdown, extensive debris removal before sealing can begin, replacement of rusted hanging straps or register boots, and homes with additions that created non-standard duct configurations. What we don’t do: quote a low per-vent teaser and rewrite the invoice once the truck is in your drive. One flat price per system, agreed in writing, before work starts. Bring a competitor’s written estimate; we provide a Free Second Opinion at no cost.
We Also Serve Cities Near Pinehurst

Our Duct Repair & Sealing in Pinehurst crews also respond to properties in Tomball, Conroe, Prairie View, and Spring. The pollen and humidity conditions vary by location; Tomball’s more open terrain doesn’t accumulate the same resinous film, while Conroe’s lake-adjacent properties face their own moisture profiles. We adjust our repair and sealing approach to what the specific location demands, documented in the photo record you receive.
Serving Pinehurst, TX - Our Local Coverage Area
We’re based in the Pinehurst 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 Pinehurst

Most Pinehurst homes need duct cleaning every 2-3 years, not the 5-year interval that suffices in less pollen-loaded areas. The resinous pine-pollen film that builds up in return ducts here acts as a substrate for mold and traps pet dander more aggressively than ordinary household dust. If you run your system year-round and have mature trees on your lot, inspect your return grilles annually; when the film is visible, the ducts behind it are worse. Call (346) 248-1474 for an exact quote - estimates are free.
That discoloration is pine pollen mixed with Southeast Texas humidity, forming a resinous film that adheres to metal and fiberglass surfaces. Pinehurst sits at the suburban edge of Montgomery County’s East Texas Piney Woods transition zone, meaning homes here face a uniquely high load of sticky, resinous pine pollen that accumulates in ductwork and, combined with near-constant humidity, creates a substrate for mold growth that neighboring communities on more open terrain don’t experience to the same degree. The film restricts airflow and provides a surface for mold colonization. We document this condition with before-and-after photos on every service call. Call (346) 248-1474 for an exact quote - estimates are free.
Partial collapse at plenum connections can often be repaired with new flex sections and proper mastic sealing, saving the intact trunk line. If the inner liner is torn, the insulation is water-damaged, or the duct has been crushed by storage in the attic, replacement is the only durable solution. We photograph the condition and show you before proceeding - Haven Standard Clause 1 requires the written price first anyway, so you’ll know the scope and cost before we cut anything. Call (346) 248-1474 for an exact quote - estimates are free.
Yes. Outbuilding systems in Pinehurst’s semi-rural properties often have longer duct runs with less insulation and more exposure to dust from unpaved driveways and open land. These systems typically load with debris faster than the main house and may use older flex duct or even uninsulated flexible pipe not rated for conditioned air. We evaluate them as separate systems with their own written scope and price. Call (346) 248-1474 for an exact quote - estimates are free.
We use mastic sealant exclusively, never tape, because mastic remains gas-tight and flexible in sustained humidity. For insulation replacement, we specify vapor-barrier-jacketed products with sealed seams to prevent condensation on cold duct surfaces. If the attic has active moisture intrusion from roof or soffit issues, we note it in the photo record and written scope so you can address the source before mold recolonizes the new work. The 365-Day Done Right Promise covers our sealing and repair workmanship regardless of ambient conditions. Call (346) 248-1474 for an exact quote - estimates are free.
Written by Tomas Reyes, Owner at CleanRun Duct Repair & Cleaning, serving Pinehurst since 2013.




Before
After
Before
After