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 Jacinto City
Duct sealing in Jacinto City typically runs $450 – $1,150 for a whole-home job on a 1950s – 1970s ranch, depending on how much attic ductwork has collapsed or torn away from the air handler. If your Jacinto City home has rooms that never quite cool, dust settling on furniture within days of cleaning, or an electric bill that climbs every July, you’re probably pushing conditioned air through gaps in the attic instead of into your living room. Our crews work in Jacinto City regularly, know the housing stock, and arrive with written pricing before any work starts. Call (713) 936-5800 for a straight answer on what your system needs.
Why Hollis Air Duct Houston Is Jacinto City’s Preferred Duct Sealing Company
Roy Castellanos runs our crew with one rule: the price written on the estimate is the price on the invoice. Jacinto City homeowners have dealt with enough door-knock duct cleaners and bait-and-switch coupons to last a lifetime. What we bring instead is The Garrison Standard: show up inside the quoted window, put the price in writing before touching a register, and stand behind the work for a full year under our 365-Day Done Right Promise. If a sealed joint fails within that year, we come back and fix it at no charge. That’s not a negotiation. It’s in writing.
Our technicians are background-checked and uniformed. They drive into Jacinto City from our Houston dispatch office, so scheduling is handled by a live person around the clock, not a voicemail that gets returned three days later. When you call about Duct Sealing, you talk to someone who can actually get a crew on the calendar. And when the tech arrives, you already know the name and what the visit will cost.
We also understand what Jacinto City’s housing stock demands. These aren’t new-build homes with conditioned attics and modern trunk lines. They’re slab-on-grade ranches with original flex duct deteriorating in 130°F attic heat and 90% humidity. That changes the job. We plan for it before we walk in your door.
Styles & brands we work with
Air Duct Sealing in Jacinto City
Air Duct Sealing in Jacinto City means finding every place your ductwork leaks: separated register boots, torn flex runs, pulled-away supply plenums, and return ducts pulling 140°F attic air through gaps in the liner. It is far more than slapping tape on a visible tear. Done correctly, sealing addresses the entire path air travels from the blower to each room and back again. A whole-home sealing job in Jacinto City generally lands between $450 and $1,150, though the final figure depends on what we find during the attic inspection. You’ll know the price before we start because we write it down and hand it to you.
Mastic Sealing at Every Joint
We use mastic, a thick paste that hardens over seams, applied to every accessible register boot, collar, and plenum connection. Unlike foil tape that peels in attic heat, mastic holds through Gulf Coast summers. On Jacinto City’s older systems, we typically find five to twelve leaking joints per home.
Repairing Collapsed or Torn Flex Runs
When flex duct collapses under attic heat, sealing alone won’t restore airflow. We reconnect separated sections, re-support sagging runs, and replace duct that has torn beyond repair. Only then can sealant do its job on a system that can actually move air.
Duct Sealing Services in Jacinto City
Duct Sealing Services in Jacinto City differ from general cleaning because the goal is containment, not just cleanliness. Every cubic foot of air your blower pushes should reach a register. In a typical 1950s Jacinto City ranch, we routinely find 20 – 35% of conditioned air escaping into the attic before ever reaching a room. Sealing those leaks puts that air back where it belongs. Homeowners usually spend $500 – $950 on a full duct sealing service here, including return and supply sides.
Return Duct Sealing and Correction
Jacinto City ranch homes frequently have undersized return air paths, so the return pulls from a hot attic or even a garage. Sealing the return at the plenum and the air handler stops hot, humid outside air from being drawn into the system. In some homes, our techs re-route returns or add jump ducts so the return actually pulls from conditioned space instead of the attic.
Register Boot Sealing
Every register boot where duct meets the ceiling or wall is a leak point. We remove the register, seal the boot to the drywall with mastic, and re-install. On a house with ten registers, that’s ten chances for conditioned air to escape into the wall cavity or attic. We treat each one.
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 Jacinto City
Our Jacinto City crews work on duct systems from every major residential brand, and we carry the right materials to properly seal them. We use Rotobrush rotary brush systems and Nikro negative-air machines for prep cleaning before sealing, and we apply mastic products that hold up in Houston-area attic conditions. For filtration upgrades that often come up during sealing visits, we install and service units from Honeywell and Guardsman. Because we stock common fittings, collars, and mastic locally, most Jacinto City jobs are completed in a single visit, with no waiting on a distributor shipment.
See the difference
Before
After
Before
After
Before
AfterCommon Duct Sealing Problems We See in Jacinto City Homes
- Fiberglass duct liner breakdown. In Jacinto City’s humid attics, fiberglass liner inside rigid ducts absorbs moisture and starts shedding fiberglass particles into the air stream. Sealing a duct with failing liner just encapsulates the problem. Our techs remove or encapsulate the liner before any sealant goes on.
- Return ducts pulling from the attic or garage. Many 1960s ranch homes here have a return path that draws air through gaps in a shared wall with the garage. That means the blower is circulating air that’s already been heated by the garage, mixed with whatever is parked there. Sealing only the supply side shifts the problem, not fixes it.
- Collapsed flex duct in unconditioned attics. Daytime attic temperatures in Jacinto City climb past 130°F from May through September. Flex duct from the 1970s, especially the gray plastic inner liner, cracks and collapses under repeated heat cycles. We re-support and replace these sections before sealing.
- Shared dryer vent stacks in 1950s multifamily buildings. The denser pockets of Jacinto City have duplexes and quadplexes with shared dryer vent risers. Lint hides inside wall cavities where you cannot see it. Sealing without a camera inspection can trap that lint and create a fire hazard. We scope before we seal on any shared stack.
Pricing for Duct Sealing in Jacinto City, TX
A straightforward duct sealing job on a single-story Jacinto City home runs $450 – $750. Homes with significant flex-duct replacement, missing return paths, or requiring liner removal before sealing typically fall in the $800 – $1,150 range. What moves the number is what we find in the attic, not a per-register upsell. There is no per-vent pricing at Hollis Air Duct Houston. Our crews use professional-grade equipment from Rotobrush and Nikro, not hardware-store gear, and every job receives a written price before work begins. Call (713) 936-5800 for a free estimate on your specific system.
We Also Serve Cities Near Jacinto City
Our crews work throughout the northeast Houston metro. In addition to Duct Sealing in Jacinto City, we serve homeowners in Houston, Spring, Humble, and League City. If you are just outside Jacinto City’s boundaries, call us and we will confirm coverage for your street.
Serving Jacinto City, TX - Our Local Coverage Area
We’re based in the Jacinto City 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 Jacinto City
Jacinto City homes from that era were built before energy codes required sealed ductwork in conditioned space. The flex duct was sized for original systems and has since degraded under decades of attic heat and Gulf Coast humidity. Newer construction with conditioned attics and modern sealing practices simply doesn’t have the same leak profile. If your home still has its original duct runs, sealing plus replacement of collapsed sections is often necessary, not optional.
Yes. We coordinate with property management or your condo board where required, and our sealing work is done from inside your unit and the attic access point serving your system. We do not modify shared structural elements or common-area fire barriers. For shared dryer vent stacks, we follow a camera-inspection-first protocol so sealing does not trap lint behind a wall. Most apartment and condo jobs run $500 – $900, depending on access.
Jacinto City’s humidity means attic duct interiors are often damp, which breaks down fiberglass liner and accelerates mold on dust inside the ducts. Sealing a duct with active mold growth or failing liner does not solve the air quality problem. Our techs evaluate the liner condition and, where needed, remove or encapsulate it before any sealing. That sequencing is what makes the repair last in this climate. For an honest assessment, call (713) 936-5800.
Yes, if the sealing includes the return side. In many Jacinto City ranches, a wall cavity between the garage and the hallway serves as the return path. Gaps at the top and bottom let the blower pull garage air into the system. Sealing only the supply ducts leaves that leak, so the house still won’t cool evenly and may pick up garage odors. We seal both the supply and return paths so the system only moves air from conditioned space. That is a standard part of our duct sealing service.
Yes, on systems where we suspect internal damage, collapsed sections, or hidden hazards like shared dryer stacks. A camera scope shows us the actual condition of the duct interior before any sealant is applied. That prevents sealing over a hidden fire hazard or a liner that is already shedding. The inspection is part of our written estimate, and the price you receive already accounts for what we find.
Written by Roy Castellanos, Owner at Hollis Air Duct Houston, serving Jacinto City and the northeast Houston metro.