Fast, Reliable Duct Repair & Sealing Across Granbury
Duct repair and sealing in Granbury typically runs $180-$650 depending on whether we’re patching a single flex duct section or resealing an entire system, and most jobs are completed in a single visit. We’re Bellows Air Duct & Vent Co. of Texas, and we’ve been driving out to Hood County from our Houston headquarters for over 42 years to fix what other companies patch and walk away from. If you’re in Granbury proper, Pecan Plantation, or out along the lake roads, our background-checked technicians usually arrive same-day or next-day. Call (866) 347-2063 and you’ll reach a live person, 24 hours a day. No app. No voicemail.
Granbury’s not like the cities 20 miles north in Tarrant County. The reservoir changes everything here. Lake Granbury elevates humidity well above the surrounding scrubland, and that moisture gets into your ductwork, especially if your home sits vacant for stretches. Meanwhile, the Ashe juniper pollen season that hits this region December through February dumps allergen loads that flatter inland areas simply don’t see. Your ducts here face a one-two punch: moisture contamination and pollen infiltration. That’s why our Duct Repair & Sealing team treats Granbury jobs differently than standard suburban calls.
Why Bellows Air Duct & Vent Co. of Texas Is Granbury’s Preferred Duct Repair & Sealing Company
We’ve built our reputation in Granbury on showing up when we say and standing behind the work. Our 90-Day Done Right Promise is stamped on every job: if it’s not right, we return at no charge with no paperwork required. That matters in a community where many homeowners are retirees or seasonal residents who can’t afford to chase down a contractor who won’t pick up the phone.
Our technicians know the local housing stock cold. They’ve crawled through attics in the historic district near the courthouse square, worked the 1970s-1990s neighborhoods, and spent countless hours in Pecan Plantation where original flex duct and fiberglass duct board is now decades past its serviceable lifespan. They understand how slab-on-grade lake properties with limited vapor control create duct environments that inland techs never encounter.
Every job gets camera-inspected before and after. You see what we see. Our pricing is disclosed upfront before a single tool is lifted - the number on the phone is the number on the invoice. No bait coupons, no price changes at the door. And calls are answered by a live person around the clock, which matters when you’re opening a lake house for the season and the AC smells like mildew.
Our Duct Repair & Sealing Services in Granbury
Duct Sealing
Leaky duct seams are the silent efficiency killer in Granbury homes, particularly in lakefront properties where humid air pushes into every gap. We seal metal and flex duct systems with professional-grade mastic sealant, not duct tape that’ll peel in our heat. A typical duct sealing job in Granbury runs $350-$650 for a whole-house seal, with spot repairs starting around $180. In high-humidity crawlspaces, we use reinforced mastic rated for wet conditions because standard compounds lose adhesion and reopen gaps that mix attic contaminants with your conditioned air.
Flex Duct Repair
Flex duct is common in Granbury’s 1970s-1990s builds, and it’s often the first thing to fail. Kinks, crush damage, and rodent intrusion collapse airflow. In Pecan Plantation, we regularly find original flex duct that’s been choked off at takeoff connections for years. A single flex duct repair or replacement in Granbury typically costs $200-$400, with multi-section jobs running higher. We use insulated flex duct with proper vapor barriers, not the thin-wall stuff that degrades in Texas attics.
Metal Duct Repair
Older homes near the Granbury courthouse square and some commercial conversions still have galvanized steel ductwork. Rust-through at seams, disconnected joints, and failed supports are what we see most. Metal duct repair in Granbury generally runs $250-$500 per section, depending on accessibility and whether we’re fabricating custom fittings. We patch, replace, and reseal with mastic and mechanical fasteners that hold up to decades of HVAC cycling.
Duct Insulation
Under-insulated ducts in Granbury attics bleed cooled air into 140-degree spaces all summer long. We install proper fiberglass or foil-faced insulation wraps, particularly critical for lake homes where the HVAC runs nearly continuously May through September. Duct insulation work in Granbury typically ranges $300-$600 for partial systems and $800-$1,400 for full replacements. The payoff shows up in your summer electric bills, which is why we often recommend it alongside sealing for homes near Lake Granbury.
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.
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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 Granbury
We don’t show up with hardware-store tools and hope for the best. Our trucks carry professional-grade equipment from Rotobrush, Nikro, and Honeywell - the same brands serious HVAC contractors specify for their own jobs. We stock common flex duct sizes, mastic compounds rated for high-humidity applications, and insulated fittings so Granbury customers aren’t waiting on parts while their AC pumps money into the attic. Most repairs are completed in a single visit because we’ve learned what fails in this climate and we bring the fix with us.
Common Duct Repair & Sealing Problems We See in Granbury Homes
- Delaminated fiberglass duct board in Pecan Plantation homes. Original 1970s-80s installations collapse at flex connections, blocking airflow and creating pollen pockets the HVAC filter never reaches. We find this on almost every walk-through inspection there.
- Leaky seams in lakefront slab-on-grade homes. Humid lake air enters unconditioned spaces through gaps in ductwork, feeding mold growth between seasonal occupancy. The reservoir proximity makes this a Granbury-specific failure mode.
- Failed mastic joints in high-humidity crawlspaces. Standard sealants lose adhesion in our moisture-heavy conditions, reopening gaps that pull attic dust and insulation particles into living spaces.
- Crushed or kinked flex duct from decades of attic traffic. Homeowners and prior service techs have walked on ductwork until it’s flattened, reducing airflow to entire zones of the house.
Pricing for Duct Repair & Sealing in Granbury, TX
Here’s what honest pricing looks like for our market:
| Service | Typical Range in Granbury |
|---|---|
| Spot flex duct repair (single section) | $180-$320 |
| Metal duct section repair/replacement | $250-$500 |
| Whole-house duct sealing with mastic | $350-$650 |
| Duct insulation (partial system) | $300-$600 |
| Duct insulation (full system) | $800-$1,400 |
| Multi-section flex duct replacement | $450-$850 |
What moves you within these ranges? Accessibility matters - tight attics in historic square-area homes take longer. Material type matters - fiberglass duct board replacement costs more than simple flex duct. And extent of damage matters - a single delaminated section versus a system that’s been degrading since 1978. We inspect with cameras before quoting, so you see exactly what we see. Estimates are free. Call (866) 347-2063.
Our standing offers apply here too: $50 off any repair over $250, a free second opinion on any written estimate you bring us, and a permanent 5% senior and veteran discount. The $89 seasonal tune-up can catch duct problems before they become expensive repairs.
We Also Serve Cities Near Granbury
Our service radius covers the full Hood County area and into neighboring Johnson and Parker counties. We regularly work in Granbury proper, Pecan Plantation, Joshua, Cleburne, and Weatherford. Same live-answer phone line, same camera inspection, same 90-Day Done Right Promise.
Serving Granbury, TX - Our Local Coverage Area
We’re based in the Granbury 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 Granbury
Humidity from Lake Granbury settles into your ductwork during vacancy, causing fiberglass duct board to swell and delaminate, and allowing mold colonies to establish on interior surfaces. When you return and fire up the AC, airflow is choked by collapsed sections and biological growth. We see this constantly in lakefront and cove-side homes. Call (866) 347-2063 for a camera inspection - estimates are free.
It’s almost always both: the reservoir elevates indoor humidity, and that moisture feeds mold and mildew growing on dust deposits inside your ductwork. In Granbury’s climate, this happens faster than in drier inland cities. A camera inspection will show whether you’re looking at cleaning, sealing, or section replacement. We don’t guess - we show you the footage. Call (866) 347-2063.
Yes. Most Pecan Plantation homes have attic-mounted ductwork accessible through scuttle holes or closet accesses. We seal from the attic side using mastic and aerosol sealant where appropriate, with no interior drywall work required. The 1970s-80s duct board in that community is our most common repair, and we handle it without opening walls. Call (866) 347-2063 to schedule.
Leaky ducts can easily waste 20-40% of conditioned air, and in a 1970s Granbury home with original metal or early flex duct, that’s the most likely culprit. The historic district homes near the courthouse often have unsealed seams and degraded supports that have been leaking for decades. We camera-inspect and seal or replace as needed. Call (866) 347-2063 for an exact diagnosis - estimates are free.
We do, though severely degraded fiberglass duct board often needs section replacement rather than repair. In Granbury’s humidity, once the facing delaminates and the core is exposed, the material loses structural integrity and becomes a mold substrate. We replace with insulated flex duct or new duct board as appropriate, sealed properly for this climate. Call (866) 347-2063 and we’ll show you exactly what you’re dealing with.
In Pecan Plantation, we repaired a 1978 flex duct system where original fiberglass duct board had delaminated at the takeoff connections, choking airflow and trapping decades of Ashe juniper pollen and lake-air particulates. We replaced the collapsed sections with insulated flex duct and sealed all joints with mastic, restoring airflow and reducing the homeowner’s allergy symptoms. That’s the kind of result we stand behind - no paperwork, no arguing.
Ready to stop losing cooled air to your attic and start breathing cleaner air? Call Bellows Air Duct & Vent Co. of Texas at (866) 347-2063. A live person will answer, 24 hours a day. We’ll schedule your free estimate, show you camera footage of your ductwork, and give you one honest price before we lift a single tool. We’ve been doing this since 1984. We’ll be there when we say, and we stand behind it.
Written by Wade Kellerman, Owner at Bellows Air Duct & Vent Co. of Texas, serving Granbury since 1984.