Whole-home duct cleaning
Dryer vent cleaning
Camera inspection
Sanitizing & deodorizingWhole-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 Sealing Across Humble
Leaky ducts mean you’re paying to cool your attic and heat your crawl space. In Humble, where summer hits hard and the humidity never really leaves, duct sealing typically runs $1,200 to $3,800 depending on how much of your system is accessible and how badly the original seams have failed. Our crews work the FM 1960 corridor, Atascocita, and Fall Creek regularly, so we know what these homes hide behind the registers. Call (713) 936-5800 and we’ll put a written price in front of you before any work starts.
Why Hollis Air Duct Houston Is Humble’s Preferred Duct Sealing Company
What sets us apart in Humble isn’t a slogan. It’s what happens on the job. We arrive inside the window we quoted, the price is already written down, and the technicians at your door are background-checked and in uniform. That’s The Garrison Standard, and it’s how every Hollis location operates. Roy Castellanos runs our crew, and he expects the same discipline from every technician that he’d expect in his own home.
We’ve worked homes from Kenswick to The Groves, and the pattern is consistent: original metal ductwork from the 1960s and 1970s that’s been losing conditioned air for decades. Homeowners call us thinking they need a cleaning, and what they often need is Duct Sealing, sometimes paired with replacement. Our 365-Day Done Right Promise covers every sealing job in writing for a full year. If the work fails, we return and make it right at no charge, including a free second visit. That’s not a courtesy. That’s the standard.
Styles & brands we work with
Air Duct Sealing in Humble
Air Duct Sealing in Humble is the process of finding and closing every leak in your duct system so the air you paid to condition actually reaches the rooms you live in. Our techs do it with a camera inspection first, because sealing the wrong joint doesn’t fix anything. Then they use mastic, a thick adhesive that hardens like a shell, and foil tape rated for HVAC use, not the gray hardware-store roll that dries out and peels in an attic that hits 140 degrees by July.
Camera Inspection Before Any Sealing
We won’t seal blind. The camera goes in first, runs the length of your supply and return ductwork, and shows us exactly where the air is going. In Humble’s older ranch homes, that’s often a disconnected seam under the slab or a crushed run from decades of clay soil movement. Sealing without that look is guesswork, and guesswork is how you end up paying twice.
Mastic and Foil Tape, Applied by Hand
The materials matter. Mastic fills gaps that tape can’t hold, and it stays flexible as your home shifts through wet winters and dry summers. Foil tape goes over seams that are accessible and clean. Every joint we seal is one less place for hot humid air to sneak into your system and one less path for conditioned air to escape. In Humble’s climate, that’s not a small difference.
Duct Sealing Services in Humble
Duct Sealing Services in Humble cover both the supply side, the ducts pushing air into your rooms, and the return side, the ducts drawing air back to your system. Most of the leakage we find is on the supply side, where hot attic air gets pulled in through loose joints and delivered to your vents. That’s why you get rooms that never cool evenly, even with the thermostat set low. The work costs what it costs based on access: crawl space, attic, or slab. We give you that number up front.
Supply and Return Sealing
We seal both sides because a leak on the return side is just as bad as one on the supply side. It pulls in attic air, fiberglass particles, and whatever else is up there. Our techs inspect every connection from the unit to the register covers, then seal what’s accessible and tell you plainly what isn’t. No vague language. Just the facts of your system.
Replacement When Sealing Isn’t Enough
On a ranch home off Bender Avenue near FM 1960, our techs camera-inspected the supply ducts and found detached metal seams and crushed runs under the slab from decades of clay soil movement. We used a Rotobrush agitation tool with HEPA filtration for source removal, then applied mastic and foil tape to seal accessible joints. Where corrosion had breached the duct walls, we quoted replacement for full NADCA compliance. Sealing won’t fix metal that’s rotted through. We’ll tell you the difference and show you the camera footage to prove it.
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 Humble
Hollis Air Duct Houston runs professional-grade equipment from Rotobrush and Nikro, and we install filtration products from Honeywell and Aprilaire. That matters because hardware-store gear doesn’t create the negative pressure required to pull contaminants out of your ducts while we work. When we seal and clean a duct system in Humble, we do it with the same tools commercial crews use, not a shop vac and a prayer. Parts for these systems are ordered and staged before we arrive, so the job doesn’t stall while someone drives across Houston for a filter.
See the difference
Before
After
Before
After
Before
AfterCommon Duct Sealing Problems We See in Humble Homes
- Rusted-out metal ducts near the San Jacinto River. Years of high humidity and heavy rain eat pinholes through original duct walls. Sealing those without patching or replacement just postpones the problem, so our camera inspection determines what’s actually viable.
- Mud dauber nests blocking registers after spring storms. These wasps build in exterior vent openings, and when they do, sealing alone traps debris and mold inside. We perform negative-pressure source removal first, then seal the entry points so it doesn’t happen again.
- Cracked joints under slab foundations along FM 1960. Clay soil in this corridor expands and contracts, shifting the earth and cracking duct joints below the slab. Without camera inspection, crews seal the wrong section and the airflow loss continues.
- Disconnected flex duct in newer developments. Homes in Fall Creek and The Groves may be newer, but flex duct sags, kinks, and pulls loose from collars. Sealing those connections and re-supporting the runs restores airflow to rooms that have been starved for years.
Pricing for Duct Sealing in Humble, TX
A typical duct sealing job in Humble runs between $1,200 and $3,800. The low end covers straightforward attic or crawl space sealing where most joints are accessible and the ducts are in workable condition. The higher end includes complex jobs: under-slab work, extensive corrosion repair, or homes where multiple systems need attention. Smaller repairs, like sealing a few disconnected joints caught during a cleaning, start around $450. What affects the price most is access, not square footage. A single-story ranch with a roomy crawl space is easier to work in than a two-story with a tight attic and a slab foundation. We give you one flat written price before any work starts, and that number does not move at the door. Call (713) 936-5800 for an exact quote. Estimates are free.
We Also Serve Cities Near Humble
Our crews cover Humble and the surrounding communities. If you’re in Spring, Houston, La Porte, or Baytown, we’ll bring the same written pricing and the same 365-Day Done Right Promise to your door. Dispatch coordinates from our Houston office, but the technicians who arrive are equipped and assigned for your specific area.
Serving Humble, TX - Our Local Coverage Area
We’re based in the Humble 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 Humble
It depends on what the camera inspection shows, but in most 1970s ranch homes along FM 1960, sealing alone is not the complete answer. The metal ducts we see in those homes are often corroded through from decades of humidity, and the joints have separated from clay soil movement under the slab. Sealing can close the gaps and improve airflow where the metal is still sound. Where the metal has rusted through, patching or replacement is the only fix that holds. We recommend a camera inspection first, because sealing a system that needs replacement is wasted money.
The most common cause after spring storms is mud dauber nests built into exterior vent openings. These wasps are active in Humble once the rain subsides, and they build inside registers and vent caps within days. Sealing alone won’t solve it because the nests and debris remain inside. We perform negative-pressure source removal to extract the blockage, then seal the entry points to prevent recurrence. Call (713) 936-5800 if your registers are blowing weak or the airflow dropped after a storm.
No. If you’re smelling mold, the spores are already in the duct lining or the insulation, not just leaking at the seams. Sealing will prevent new humid air from entering, but it won’t remove what’s already growing. We use a Nikro negative-air machine to pull contaminants out and a HEPA-filtered Rotobrush system for source removal. Once the ducts are clean and dry, sealing keeps them that way by cutting off the moisture path. Sealing first and cleaning later just traps the problem inside.
Older 1980s homes in Humble typically have rigid metal ducts with failing tape at the joints and potential corrosion at the seams. Sealing those requires mastic over every accessible joint, plus repair or replacement where the metal has breached. Newer flex duct homes have different failure modes: the flexible tubing sags between supports, kinks at bends, or pulls loose from the register collars. We seal and re-support those connections. The approach is different, which is why a one-size-fits-all quote is a red flag.
Sealing helps only if the fiberglass is intact and clean. In many pre-1990 Humble homes, the interior duct insulation has degraded into particles that blow into living spaces. Sealing the exterior joints won’t stop air passing over that insulation from picking up fibers. If our camera shows degraded insulation, we’ll recommend removal and replacement with closed-cell lining before sealing. That way you’re not sealing in the problem. For a camera inspection and a written quote, call (713) 936-5800.
Written by Roy Castellanos, Owner at Hollis Air Duct Houston, serving Humble with written pricing and the 365-Day Done Right Promise.