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 Sealing Across Hendersonville
We dispatch to Hendersonville from our Memphis coordination office, and most days we’re on Indian Lake Road, Sanders Ferry Road, or in the Gallatin Road corridor within a reasonable drive window. If your upstairs bedroom won’t match the thermostat, your power bill keeps climbing, or your vent covers show dark streaks, there’s a fair chance your ductwork is leaking conditioned air into the attic or crawlspace. Call us at (361) 326-5060 and we’ll give you a written price before any work starts.
Our Hendersonville customers live in the brick ranches off Vietnam Veterans Boulevard, the two-story builds near Memorial Park, and the lakefront properties along Old Hickory Lake where humidity does things to flex duct that inland Sumner County homes don’t see. We know the difference because we’ve crawled through both.
Why Hollis Air Duct Cleaning Is Hendersonville’s Preferred Duct Sealing Company
We’ve been in business since 2004 as part of the Garrison Partners family, and our 365-Day Done Right Promise covers every duct sealing job in writing. If the seal fails or the disconnect reopens within a year, we come back at no charge. That includes a free second visit, not a negotiation.
Our technicians are background-checked and uniformed, and they arrive inside the quoted window. The price is written down before any tool touches your system. No estimate that balloons once we’re in the attic. That’s The Garrison Standard, and it’s how every Hollis location operates.
Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loop, no callback queue, no waiting until Monday to schedule.
We use professional-grade equipment from Rotobrush, Nikro, and Abatement Technologies, the same tools commercial crews run. For filtration and sealing products, we stock Aprilaire and Guardsman components. We don’t show up with hardware-store gear.
Air Duct Sealing in Hendersonville
Air Duct Sealing in Hendersonville means finding where conditioned air escapes your ductwork and permanently closing those gaps with mastic, metal tape, and mechanical fasteners rated for HVAC use. In a typical Hendersonville home, 20 to 30 percent of heated or cooled air never reaches the rooms it’s supposed to serve. It leaks into the attic, the crawlspace, or the wall cavities. You’re paying to condition air that never enters your living space.
Most Hendersonville homes were built between the 1980s and 2010s with flex duct run through unconditioned attics. That flexible ductwork is easier to install than rigid metal, but it sags, it crushes, and in Hendersonville’s humid lake climate it collects condensation that degrades the outer liner and loosens the band clamps at every joint. Sealing without addressing that moisture first is a temporary fix at best.
When Sealing Becomes Necessary
You’ll know it’s time when some rooms never reach temperature, when your HVAC runs constantly, or when your summer power bill spikes despite normal usage. In lakefront Hendersonville neighborhoods, we also see musty odors that persist after cleaning because the real problem is a disconnected return pulling attic air through moldy flex.
What the Job Actually Covers
We pressurize the system and measure leakage with a duct blaster or similar diagnostic tool. Then we seal accessible joints, reconnect separated runs, replace crushed or degraded sections, and verify the improvement with a second pressure test. You see the before and after numbers in writing.
Duct Sealing Services in Hendersonville
Duct Sealing Services in Hendersonville from Hollis include full-system inspection, leakage testing, mechanical repair of damaged runs, and sealed joints that hold up to Middle Tennessee’s humidity. We don’t quote over the phone without seeing the system, because Hendersonville attics vary too much. A 1995 two-story off Indian Lake Road with original flex duct needs a different approach than a 2010 build near Hendersonville Medical Center with metal trunk lines and newer takeoffs.
Our Duct Sealing team carries the tools to handle both. For older metal systems, we reseat loose seams with mastic and fiberglass mesh, then mechanically fasten. For flex duct, we replace degraded sections with new insulated flex, support it properly to prevent future sagging, and seal every connection with UL-181 approved tape and mastic. The work is photographed before and after. You see what we found and what we fixed.
Source Removal Before Sealing
Here’s what separates our approach in Hendersonville: we won’t seal over moldy or collapsed duct. In lake-area homes, our techs regularly find flex runs so saturated with condensation that the insulation is wet through. Sealing that traps moisture and odor inside. We remove the contaminated material first, using rotary brush agitation and negative-air containment, then seal the clean system.
Written Pricing and Guarantee
Every job gets a written price before work begins. The 365-Day Done Right Promise applies to the sealing work and any replaced duct sections. If a joint reopens, a seal cracks, or a replaced run fails, we return and make it right at no charge.
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.
Trusted Brands We Service in Hendersonville
We stock Aprilaire filtration components and Guardsman sealing products for Hendersonville customers, which means most repairs don’t wait on parts orders. For duct cleaning and source removal before sealing, we run Rotobrush rotary brush systems and Nikro negative-air machines. When microbial treatment is needed after moisture damage, we use Abatement Technologies HEPA filtration and containment equipment. These aren’t brand names for the truck wrap. They’re the tools we pull out of the van on Sanders Ferry Road and Vietnam Veterans Boulevard, and we explain what each one does while we’re running it.
Common Duct Sealing Problems We See in Hendersonville Homes
- Condensation-saturated flex duct in lake-area attics. In neighborhoods off Indian Lake Road and near Old Hickory Lake, summer humidity never fully dries in unconditioned attics. Flex duct insulation gets wet, the outer liner degrades, and band clamps rust loose. Sealing the joint doesn’t fix the saturated run; it needs replacement first.
- Disconnected takeoffs in older postwar homes near downtown. Original metal trunk lines in homes from the 1950s and 1960s have seams that were never sealed and takeoffs that have worked loose over decades. Conditioned air pours into crawlspaces while bedrooms go stale.
- Sagging flex duct crushed under its own weight. Hendersonville’s 1990s and 2000s builds often have flex duct strung too far between supports. Over time it sags, kinks, and restricts airflow. The restriction raises static pressure and forces more air out of every loose joint upstream.
- Mold growth inside duct from chronic dampness. Lake-driven humidity plus long cooling cycles equals mildew inside the duct interior. Homeowners smell it before they see it. Sealing without removing the source traps that odor and spore load in the system permanently.
Pricing for Duct Sealing in Hendersonville, TN
A typical duct sealing job in Hendersonville runs $450 to $1,200 for a single-system home, depending on accessibility, the amount of damaged duct that needs replacement, and whether source removal or microbial treatment is required before sealing. Homes with multiple HVAC zones, extensive flex duct replacement, or hard-to-access crawlspaces can run higher. We don’t quote teaser prices that change at the door. The price is written down after inspection and before any work starts.
What drives cost: how much of your system is accessible, how many disconnected or crushed runs we find, whether we’re sealing metal seams or replacing degraded flex, and whether the attic or crawlspace requires remediation before sealing can be effective. We charge one flat price per system. No per-vent add-ons, no surprise charges once the van is in your driveway.
Estimates are free. Call (361) 326-5060 to schedule.
We Also Serve Cities Near Hendersonville
Our crews work throughout Sumner and surrounding counties, including Hendersonville neighbors in Goodlettsville, Mount Juliet, Gallatin, and White House. Scheduling and dispatch are coordinated from our Memphis office, with local crews serving each community.
Serving Hendersonville, TN - Our Local Coverage Area
We’re based in the Hendersonville 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 About Duct Sealing in Hendersonville
Because Hendersonville’s housing stock is heavy on 1980s-2010s flex duct in humid attics, and that combination degrades the physical connections between duct sections. Cleaning removes dust and debris, but it doesn’t reconnect a separated takeoff or seal a seam that’s been leaking for fifteen years. We often find during camera inspection that the real problem is structural, not dirty. Call (361) 326-5060 and we’ll show you what the camera sees.
Sealing damp duct without addressing the moisture source traps mold and mildew inside the system. In Hendersonville’s lake-driven climate, we typically need to replace saturated flex runs, improve support and slope for drainage, and sometimes add mechanical dehumidification before sealing makes sense. We inspect first and tell you honestly whether sealing alone will solve the problem. Estimates are free.
We pressurize the system and measure total leakage with a duct blaster, then use smoke pencils or theatrical fog to pinpoint where air escapes. In Hendersonville’s older postwar homes near downtown, we also run a camera through accessible trunk lines to find takeoffs that have separated from the main. The homeowner sees the footage. We mark every leak on a diagram and show you the before-and-after pressure test numbers in writing.
Pollen doesn’t change how we seal joints, but it does affect why Hendersonville homeowners feel the need. Heavy cedar and oak pollen in March and April infiltrates through every gap in your ductwork, coating the interior and circulating through your home. A sealed system with proper filtration blocks that infiltration. After we seal, we often recommend an Aprilaire media filter upgrade to capture what doesn’t get in through the leaks.
We use mastic and fiberglass mesh for metal seams, UL-181 approved foil tape for flex connections, and mechanical supports to prevent future sagging. For source removal before sealing, we run Rotobrush rotary brush systems and Nikro negative-air machines. For homes with moisture damage, we deploy Abatement Technologies HEPA containment. Every tool is explained on site. You know what we’re running and why.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Hendersonville since 2004.