Fast, Reliable Duct Repair & Sealing Across Greatwood
Duct repair and sealing in Greatwood typically costs $280-$650 for most residential jobs, and our Duct Repair & Sealing team can usually be there same day you call. We’ve been driving out to the master-planned neighborhoods off FM 762 and along the Brazos River corridor for over four decades, and we know the specific problems these homes develop. Greatwood’s 20-35-year-old flex-duct systems weren’t built to handle Fort Bend County’s relentless humidity, and the older the installation, the more likely you’re leaking conditioned air into your attic. Call (866) 347-2063 and a live person will pick up, 24 hours a day.
Why Bellows Air Duct & Vent Co. of Texas Is Greatwood’s Preferred Duct Repair & Sealing Company
We’ve worked in Greatwood since the first sections were finishing construction in the late 1980s. Back then we were sealing brand-new flex duct in homes that are now pushing 35 years old. That continuity matters. We know which builders used thinner-gauge flex, which neighborhoods have the attic access issues, and where Harvey flood repairs were done fast rather than done right.
Our technicians are background-checked, uniformed, and carry Rotobrush and Nikro equipment on every truck. Most Greatwood repairs finish in a single visit. We show you camera footage of your ductwork before we quote a price, and that price is the price on the invoice. Our 90-Day Done Right Promise applies to every job in ZIP 77469: if it’s not right, we come back at no charge, no paperwork, no arguing.
Calls to our office route to a live person, not voicemail, not an app. Greatwood homeowners tend to stay put for twenty years or more, and they want a company that answers the phone and shows up when promised. We’ll be there when we say.
Our Duct Repair & Sealing Services in Greatwood
Flex Duct Repair
Greatwood’s housing stock is almost entirely flex-duct systems installed between 1988 and 2005, and these are now hitting their failure window. The inner liner tears, the insulation compresses, and the sagging joints pull apart in Fort Bend County’s attic heat. Our crew recently worked on a 1995 home on Crescent Moon Lane where the flex duct inner liner had deteriorated, causing air leaks at every joint. We used Rotobrush agitation to clean the ductwork before applying mastic sealant to all accessible connections, then re-insulated the attic-run ducts with R-8 wrap to improve efficiency. The homeowner reported a 15°F improvement in supply register temperature after the repair. Flex duct repair in Greatwood runs $320-$580 depending on linear footage and access difficulty.
Duct Sealing with Mastic Sealant
Builder-grade mastic joints in Greatwood homes typically fail within 5-8 years due to attic temperature swings that range from 55°F winter nights to 140°F summer afternoons. We remove failed tape and deteriorated mastic, then apply fresh, fiber-reinforced mastic sealant rated for Texas attic conditions. A typical Greatwood home needs 15-25 joint seals, and we camera-verify every connection before we close up. Mastic sealing jobs in Greatwood average $280-$450.
Metal Duct Repair
While most Greatwood homes use flex duct, some custom builds and later additions have galvanized metal trunk lines that corrode at seams or separate at transitions. We patch pinholes with sheet metal and sealant, replace rusted sections, and reinforce hanger supports. Metal duct repair in Greatwood typically runs $350-$620.
Duct Insulation
Fort Bend County’s extreme humidity, routinely above 70-80% relative humidity year-round, creates persistent condensation risk inside ductwork, especially where flex runs sag or joints leak into hot attic space. This accelerates mold and microbial growth inside supply plenums and duct liners at a rate that exceeds what most drier Texas metros experience. We install R-6 or R-8 insulation wrap on exposed attic ducts, with vapor-barrier facing to prevent condensation. Duct insulation in Greatwood costs $180-$340 for typical residential systems.
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.
Trusted Brands We Service in Greatwood
We stock parts and materials from Honeywell and Aprilaire for Greatwood customers, which means most repairs don’t wait on shipping. Our trucks carry Rotobrush cleaning systems and Nikro HEPA vacuums for jobs where duct cleaning must precede sealing work. When you’re pulling 15% less conditioned air through compromised ducts, you don’t want to hear that parts are three days out. We keep inventory moving through our Houston warehouse so Greatwood jobs finish fast.
Common Duct Repair & Sealing Problems We See in Greatwood Homes
- Aged flex duct inner liners tear during cleaning, requiring extensive repair before sealing can be effective. In Greatwood’s 1990s-era homes, we regularly find liners so brittle that standard agitation causes additional damage, forcing us to section-replace duct runs before any sealing work begins.
- Post-Harvey mold contamination embedded in liner fabric goes undetected without proper inspection, leading to recontamination after sealing. Technicians working Greatwood regularly find that homes near the Brazos River lowlands have flex duct inner liners that appear intact but test positive for mold, because the systems were restored to operation too quickly post-flood and the contamination is embedded in the liner fabric rather than visible as surface growth.
- Builder-grade mastic joints fail within a few years due to attic temperature swings in Greatwood’s unconditioned spaces, causing renewed leaks that homeowners mistake for equipment failure. We see this most often in the early-phase neighborhoods near Greatwood Lakes Drive.
- Sagging flex runs in long attic spans create low points where condensation pools, accelerating mold growth and duct deterioration. Greatwood’s original builder specs often used inadequate hanger spacing that we’ve since learned doesn’t hold up in Gulf Coast humidity.
Pricing for Duct Repair & Sealing in Greatwood, TX
| Service | Typical Range in Greatwood |
|---|---|
| Mastic sealant (joint sealing) | $280-$450 |
| Flex duct section repair/replacement | $320-$580 |
| Metal duct patch or section replacement | $350-$620 |
| Duct insulation (R-6 or R-8 wrap) | $180-$340 |
| Full system assessment with camera inspection | $89 (credited toward repair) |
What moves the price: linear footage of ductwork, attic access difficulty, whether cleaning must precede repair, and extent of post-Harvey contamination requiring remediation. We disclose every line item before work starts. No bait coupons, no price changes at the door. We also offer $50 off any repair over $250, a free second opinion on any written estimate, and a permanent 5% senior and veteran discount. Call (866) 347-2063 for an exact quote on your Greatwood home, estimates are free.
We Also Serve Cities Near Greatwood
Our Duct Repair & Sealing in Greatwood crews also handle jobs in Rosenberg, Richmond, Sugar Land, and New Territory. Same trucks, same technicians, same upfront pricing and 90-Day Done Right Promise. If you’re in a neighboring community and your home shares Greatwood’s vintage and ductwork challenges, we know what to look for.
Serving Greatwood, TX - Our Local Coverage Area
We’re based in the Greatwood 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 Greatwood
Flex duct in Greatwood’s attics typically lasts 20-25 years, though we’ve seen failures at 15 years in homes with poor attic ventilation or post-Harvey moisture exposure. The combination of Fort Bend County’s extreme humidity and temperature swings degrades the inner liner faster than in drier climates. If your Greatwood home was built between 1988 and 2005, your ductwork is likely at or past its reliable service life. Call (866) 347-2063 for a camera inspection, estimates are free.
Yes. Greatwood’s master-planned community sits along the Brazos River floodplain, and many slab-on-grade homes took on water during Harvey in 2017. HVAC systems in these homes were often returned to service within days or weeks, pulling moisture and mold spores directly through ductwork that was patched rather than fully remediated. We regularly find flex duct inner liners that appear intact but harbor embedded mold contamination, requiring section replacement before any sealing work can be done properly. Call (866) 347-2063 if your Greatwood home flooded and you’ve never had your ducts fully assessed.
No. Small, accessible leaks in otherwise sound ductwork can be sealed with mastic sealant at a fraction of replacement cost. In Greatwood, we seal leaks in roughly 70% of the homes we assess, reserving full replacement for duct runs with torn inner liners, embedded mold, or structural sagging. We camera-inspect first so you know which category you’re in before spending money. Call (866) 347-2063 for a free assessment.
Yes. Sealed ducts can improve system efficiency by 15-20% in Greatwood’s climate, which translates to shorter run times and less moisture introduction into your home. In Fort Bend County’s 70-80% relative humidity, every minute your system runs unsealed is a minute it’s pulling attic heat and moisture into your living space. We verify results with before-and-after camera documentation and temperature readings at your supply registers. Call (866) 347-2063 to schedule.
Yes. Every duct repair and sealing job in Greatwood carries our 90-Day Done Right Promise in writing: if the work is not right, Bellows returns at no charge with no paperwork required. Beyond that, we warranty our mastic sealant workmanship for one year and our flex duct replacement materials for the manufacturer’s rated lifespan. We stand behind it, no arguing. Call (866) 347-2063 with questions about coverage on your specific repair.
Ready to stop losing conditioned air to your Greatwood attic? Call Bellows Air Duct & Vent Co. of Texas at (866) 347-2063. A live person will answer, 24 hours a day, and we’ll get you scheduled for a free estimate with camera inspection. One honest price shown before we start. Done right, and backed in writing for 90 days.
Written by Wade Kellerman, Owner at Bellows Air Duct & Vent Co., serving Greatwood since 1984.