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 Azle
Duct sealing in Azle typically costs $400 – $900 for a whole-house seal on a standard ranch or manufactured home, with most jobs completed in a single visit. Our crew serves Azle from our Dallas-Fort Worth dispatch office, and we know the local housing stock well enough to spot the real problem in the first hour.
We’ve been in enough attics over Azle to recognize the pattern. Homes built from the 1970s through the 1990s, especially the ranch-style and manufactured homes that make up much of the city, were fitted with flexible duct runs routed through unconditioned attic spaces. Decades of North Texas heat and the area’s hard water humidity have taken their toll. The insulation jackets sag. The wye connections separate. And somewhere along the line, a previous owner or handyman reconnected a leak with hardware-store foil tape that released within a season. The duct looks sealed until it isn’t, and the master bedroom never cools below 78°F while the attic gets the conditioned air.
That’s why our Duct Sealing team starts with a camera inspection, not a sales pitch. We find the leak, show you the footage, and give you a written price before we touch anything. If you’re in Pelican Bay, near Eagle Mountain Lake, or off Main Street in the older core of Azle, call us at (361) 326-5060. We’ll get you scheduled and tell you what to expect before we arrive.
Why Hollis Air Duct Cleaning Is Azle’s Preferred Duct Sealing Company
Hollis Air Duct Cleaning has been part of the Garrison Partners family since 2004, and our crews have worked in enough Azle attics to know what the housing stock delivers. We don’t guess at the problem. We run a camera, identify the failure, and price it in writing before any work starts.
Our technicians are background-checked and uniformed, and they operate under The Garrison Standard: arrive inside the quoted window, price in writing, complete the job by the book, and leave the site clean. Every duct sealing job in Azle carries our 365-Day Done Right Promise. If the seal fails within a year, we come back and make it right at no charge, including a free second visit. No negotiation, no runaround.
Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops, no callback queues, no waiting until Monday for someone to confirm your appointment. Dispatch and scheduling are coordinated from our Dallas-Fort Worth office, but the crew that shows up at your door in Azle knows your neighborhood and your type of house.
We use professional-grade equipment from Rotobrush, Nikro, and Abatement Technologies, plus filtration products from Honeywell and Aprilaire. These are the same tools commercial crews use, not hardware-store gear, and we explain what each piece does while we’re in your home.
Duct Insulation in Azle
Duct Insulation in Azle is often the companion repair that makes sealing worth the cost. In this city’s older ranch and manufactured homes, flexible duct runs were originally wrapped with fiberglass insulation jackets that collapse, compress, or tear after decades in humid attics. A sealed duct with compromised insulation still loses energy, and the air that reaches your rooms is closer to attic temperature than you paid for.
Our crew removes the damaged jacket, re-seals the underlying duct with mastic, then applies new foil-backed insulation rated for attic exposure. The job typically adds $300 – $600 to a sealing project, depending on how many runs need rewrapping and whether the plenum itself has deteriorated.
When Insulation Failure Hides Behind a Clean Register
Homeowners in Azle often call us for weak airflow and assume the duct is clean but undersized. What we find instead is a fully sealed metal collar connected to a flex run whose insulation has collapsed inward, choking the airway to a fraction of its designed capacity. The register looks fine. The duct behind it is suffocating.
Lake-Area Humidity and Condensation Risk
Homes near Eagle Mountain Lake deal with chronic indoor humidity that keeps metal plenums and boots damp even when the AC is running. Sealing over a cold, wet surface guarantees callback. We dry the plenum, seal it, then insulate to raise the surface temperature above the dew point. Without that step, condensation wins and mold follows.
HVAC Duct Sealing in Azle
HVAC Duct Sealing in Azle addresses the leaks that force your air handler to work harder and longer than it was designed to. In a typical 1980s ranch home off Azle’s Main Street corridor, we measure system static pressure before and after sealing and regularly see a 20 – 30 percent improvement in delivered airflow. That translates to rooms that actually reach the thermostat setting, shorter AC runtime, and less strain on equipment that already operates nearly year-round in this climate.
The work involves pressurizing the duct system to locate leaks, then sealing joints, plenum connections, and damaged flex runs with mastic and foil-backed tape rated for attic temperatures. We don’t use hardware-store foil tape on supply-side joints; it releases under heat and leaves you with the same leak next season.
Camera-First Inspection Policy
We run a borescope through every accessible run before we quote sealing work. In Azle’s older housing stock, we’ve found crushed flex duct behind drywall, disconnected wyes buried in blown insulation, and registers that were never properly connected to the trunk line. Sealing without seeing is guessing, and we don’t guess on your dime.
Negative Pressure and HEPA Containment
If your ducts need cleaning before sealing, we use Nikro negative-air machines to pull debris out under controlled suction, with HEPA filtration on the exhaust. Sealing a dirty duct traps mold spores and construction dust against the fresh mastic. We clean first, seal second, and show you the before-and-after footage.
Trusted Brands We Service in Azle
Our Azle crews carry equipment and materials from Rotobrush, Nikro, Abatement Technologies, Honeywell, Aprilaire, and Guardsman. We stock mastic, foil-backed tape, and replacement flex duct in common diameters so we’re not making a supply run while your attic is open. For filtration upgrades after sealing, we keep Aprilaire and Honeywell media filters on the truck. If your system needs a UV light or dehumidifier to address the moisture that caused the leak in the first place, we can source and install Guardsman and Abatement Technologies products without a two-week order delay. The goal is one visit, one written price, one completed job.
Common Duct Sealing Problems We See in Azle Homes
- Failed hardware-store tape on original flex duct. In attics across Azle, especially in 1970s and 1980s ranches near Pelican Bay, we find supply and return ducts that were reconnected with standard foil tape after a sag or tear. The tape adhesive releases under sustained attic heat, and the leak reopens within weeks. The homeowner feels the symptom, not the cause.
- Disconnected or crushed runs behind drywall. Flexible duct in Azle’s older manufactured homes was often routed through tight chases with inadequate support. Over decades, the duct kinks, crushes, or pulls free at the collar. A sealing job that doesn’t include camera inspection misses these failures entirely and masks the real problem.
- Damp plenums in lake-area homes. Properties near Eagle Mountain Lake run higher indoor humidity year-round. Unsealed metal plenums and boots stay wet enough that mastic won’t bond. Sealing over moisture guarantees a callback. We address the humidity source first, then seal.
- Insulation collapse choking airflow. The fiberglass jacket on original flex duct compresses or tears after decades in Azle’s humid attics. The duct is technically sealed but functionally blocked. Re-sealing without re-insulating wastes your money and leaves the room hot.
Pricing for Duct Sealing in Azle, TX
A typical whole-house duct sealing in Azle runs $400 – $900 for a standard ranch or manufactured home with accessible attic space. Smaller partial seals, such as a single disconnected run or plenum reseal, start around $250 – $400. Duct insulation replacement adds $300 – $600 depending on linear footage. Homes requiring extensive flex duct replacement rather than sealing can reach $1,200 – $2,000, and we tell you before we start whether you’re in that category.
What moves the number: attic accessibility, how many runs need attention, whether we find disconnected or crushed duct that requires replacement rather than sealing, and whether the plenum itself has rusted or separated. We give you one flat price per system, agreed in writing before work begins. No per-vent pricing, no add-ons at the door, no surprises.
Every estimate is free. Call (361) 326-5060 and we’ll schedule a camera inspection at no charge.
We Also Serve Cities Near Azle
Our crews regularly work in Azle and the surrounding communities of Haslet, Aledo, Keller, and Weatherford. The same Garrison Standard applies in every home we enter: written price, background-checked uniformed technician, and the 365-Day Done Right Promise on every job.
Serving Azle, TX - Our Local Coverage Area
We’re based in the Azle 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 Azle
It usually needs both sealing and selective replacement. Original flex duct in Azle’s 1980s ranch homes has typically sagged, torn at wyes, or been patched with failing tape. We run a camera inspection to separate the salvageable runs from the collapsed or disconnected ones. Runs with intact structure get sealed and re-insulated; crushed or separated runs get replaced. Call (361) 326-5060 for a free camera inspection and written quote.
Lake-area homes run higher indoor humidity year-round, which keeps metal plenums and boots damp enough to prevent proper mastic bonding and encourages mold growth inside ductwork. The humidity also saturates attic insulation, adding weight that sags flex duct off its supports. Sealing without addressing moisture is a temporary fix at best. We assess humidity levels and recommend source control before we seal.
We can, but we won’t recommend it if the ducts are dirty. Sealing over debris traps mold spores, construction dust, and rodent droppings against fresh mastic and new insulation. For most Azle homes with decades of accumulation, we clean with negative-air extraction and HEPA filtration first, then seal. The camera inspection tells us whether your system is clean enough to seal directly.
We test static pressure and airflow at the air handler and at key registers before and after the work, and we show you the numbers. We also provide before-and-after photos from the camera inspection. If the delivered airflow hasn’t improved measurably, we keep working until it does. The 365-Day Done Right Promise covers any seal failure within a year at no charge.
Every three to five years for inspection, with cleaning as needed based on what we find. Lake-area humidity accelerates both biological growth and tape failure, so we recommend more frequent checks than drier inland neighborhoods. If you notice musty odors, uneven cooling, or rising energy bills between visits, call sooner. Call (361) 326-5060 to schedule.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Azle and North Texas since 2004.