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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After
Before
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Before
AfterFast, Reliable Duct Sealing Across Manvel
We’re the crew Hollis Air Duct Cleaning sends to Manvel when homeowners notice their bedroom vents smell musty, their system runs nonstop, or their upstairs never cools. Calls come in from Sedona Lakes, from the newer subdivisions off Highway 6, and from the scattered ranch homes that still sit on original acreage. Our technicians are background-checked, uniformed, and carry the same Rotobrush and Nikro equipment we use on commercial jobs. Scheduling runs through our Houston office, but the van that pulls into your Manvel driveway is stocked for the specific duct problems this soil and climate create. If you’re ready to stop throwing money at high bills and uneven cooling, call us at (361) 326-5060 for a free written estimate.
Why Hollis Air Duct Cleaning Is Manvel’s Preferred Duct Sealing Company
We’ve been serving the Manvel area since 2004 as part of the Garrison Partners family, and we’ve watched this city transform from farmland to one of the fastest-growing pockets of Brazoria County. That history matters because we know what the builder-grade systems in your 2012 or 2017 subdivision were actually built with.
Our technicians follow The Garrison Standard on every Manvel job: arrive inside the quoted window, price the work in writing before touching anything, and leave the site clean. The 365-Day Done Right Promise covers every duct sealing repair we make. If the seal fails or the odor returns within a year, we come back and make it right at no charge, including a free second visit.
Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops, no callback queues. When a Manvel homeowner calls after a thunderstorm has left their ducts waterlogged, they reach a human who can dispatch a crew.
Air Duct Sealing in Manvel
Air Duct Sealing in Manvel is the process of closing gaps, separations, and failed joints in your HVAC ductwork so conditioned air reaches your rooms instead of leaking into your attic or crawlspace. In this market, we see it most often in post-2000 slab-on-grade homes where heavy clay soil movement has pulled duct boots away from ceiling registers, or where builder-grade flex duct has crushed in unconditioned attics that hit 140 degrees in July. A typical whole-system duct sealing job in Manvel runs $850 – $1,800, depending on how many boots need reattachment, how much damaged flex requires replacement, and whether we need to seal at the air handler plenum. Most Manvel homes we seal fall in the $1,100 – $1,400 range for a complete supply and return system.
Boot Reattachment and Plenum Sealing
We start where the failures start. In Manvel, that’s often the galvanized duct boot pulled loose from the drywall register by soil shift and thermal cycling. We reseat the boot with mechanical fasteners and seal with mastic rated for wet conditions, not tape that will dry and fail in your attic heat.
Flex Duct Replacement for Crushed Runs
When we find a flex run that’s been crushed by storage items, compressed by blown insulation, or pinched during original construction, we replace it with properly sized flex and support it to prevent sagging. A crushed return in a two-story Manvel home is why your upstairs never cools.
Duct Sealing Services in Manvel
Duct Sealing Services in Manvel cover the full range of repair and closure work needed to restore pressure balance and stop conditioned air from escaping into spaces you don’t live in. Our crews use mastic sealant, mechanical fasteners, and replacement flex duct to address the specific failure patterns this climate and soil produce. The same humidity that makes your windows fog in October is working against your duct joints year-round. A typical partial sealing job, targeting two to three problem zones, runs $450 – $750. Whole-system sealing with multiple boot repairs and flex replacement runs $1,200 – $1,800. We write the price down before we start, and it does not move.
Negative-Air Testing After Sealing
We verify our work. After sealing, we pull negative pressure through the system with a Nikro machine and check for leakage with a smoke pencil. If air still moves where it shouldn’t, we find it and fix it before we leave.
MERV-Rated Filtration Upgrades
Sealing without proper filtration leaves you vulnerable. We stock Aprilaire and Honeywell media filters sized for Manvel’s pollen load and humidity, installed at the air handler where they actually protect the coil and ductwork.
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 Manvel
Our vans carry sealing mastic, mechanical fasteners, and replacement flex duct from Abatement Technologies and Guardsman, plus filtration products from Aprilaire and Honeywell stocked for same-day installation. We don’t run to a supply house while your system is open. For the Rotobrush camera inspections we use to document cracked boots and standing water before we quote, we carry HEPA-rated filtration media to protect your home while we work. If your Manvel home needs a specific boot size or plenum adapter, we measure on site and fabricate what fits, not what a catalog guesses.
Common Duct Sealing Problems We See in Manvel Homes
- Slab movement pulls boots from registers. Manvel’s heavy clay soil swells when wet and shrinks in drought, shifting slab-on-grade foundations enough to separate duct boots from ceiling registers. The gap leaks conditioned air into your attic and pulls musty crawlspace air back through the return.
- Builder-grade flex duct crushes in hot attics. The flexible ductwork in most post-2000 Manvel subdivisions was never designed for decades of 140-degree attic exposure. Sagging runs get compressed by insulation or storage, choking airflow to back bedrooms.
- Undersized returns create pressure imbalances. Many Manvel homes were built with return ducts too small for the tonnage. The system runs longer, the filter loads faster, and the negative pressure pulls leakage from every unsealed joint.
- Storm condensate overflow damages duct interiors. Summer thunderstorm power blips stop the condensate pump while humidity stays high. Water overflows into the return plenum, and without sealing of water-damaged sections, microbial growth follows within days.
Pricing for Duct Sealing in Manvel, TX
We’re upfront about what this costs because we’ve been on the other side of the bait-and-switch ourselves, and we won’t run that play.
| Service | Typical Range in Manvel |
|---|---|
| Boot reattachment and sealing (1-2 boots) | $350 – $550 |
| Partial system sealing (2-3 problem zones) | $450 – $750 |
| Whole-system duct sealing (supply + return) | $850 – $1,800 |
| Flex duct replacement (per crushed run) | $180 – $320 |
| Air handler plenum reseal | $280 – $450 |
What moves you within these ranges: how many boots have pulled free, whether flex runs need replacement or just re-support, and whether we find water damage requiring section replacement before sealing. We inspect with a camera, show you the footage, and write a single price for the complete job. No per-vent add-ons. No equipment fees that appear after we’re inside. Call (361) 326-5060 for a free estimate.
We Also Serve Cities Near Manvel
Our crews run sealed system work throughout Brazoria and northern Galveston County, including Duct Sealing in Manvel proper plus Alvin, Fresno, Pearland, and Friendswood. The same clay soil and humid climate patterns extend across this corridor, so the failure modes we know in Sedona Lakes or along Highway 6 translate directly to homes in those neighboring markets.
Serving Manvel, TX - Our Local Coverage Area
We’re based in the Manvel 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 Manvel
Manvel’s rapid growth on former agricultural land means heavy clay soil shifts through wet-dry cycles, pulling slab-on-grade foundations enough to separate duct boots from registers within 5-10 years. Builder-grade flex duct in unconditioned attics fails faster here than in climates with milder summers and more stable soil. Call (361) 326-5060 if you’re seeing uneven cooling or musty bedroom vents.
Humidity here makes sealing the priority in most cases we see. Cleaning removes what’s already growing, but without sealing the gaps that let humid attic air and condensate into the system, the microbial problem returns. We often recommend sealing first, then evaluating whether cleaning is still needed. Call (361) 326-5060 and we’ll inspect to tell you which matters more for your home.
Check for water stains around ceiling vents after storms, musty odors in bedrooms that worsen when the system runs, rooms that stay 5-10 degrees different from the thermostat setting, and utility bills that climb without rate increases. These four together strongly suggest boot separation or crushed flex in your attic runs. Call (361) 326-5060 for a camera inspection.
Yes, if the odor is coming from gaps that pull in crawlspace or attic air. We sealed exactly this problem in a Sedona Lakes home where a storm had overflowed the condensate pan and soil shift pulled the master bedroom boot loose. After reattachment, mastic sealing, and negative-air HEPA cleanup, the smell was gone. If your odor persists after sealing, we evaluate whether coil or duct cleaning is the next step. Call (361) 326-5060.
We do, and they present different challenges than the subdivisions. Older metal ductwork often has rusted joints and asbestos tape that needs careful handling, while 1970s flex may be brittle and require full replacement rather than sealing. Our Duct Sealing team assesses each system individually and quotes accordingly. Call (361) 326-5060 for a free written estimate.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Manvel since 2004.