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 Baytown
Duct sealing in Baytown runs $350 – $900 for a typical single-story home, with most jobs completed in four to six hours. That’s the honest range our customers pay, written down before anyone touches a vent. If you’re in Baytown and your cooling bill climbs every August while some rooms stay warm, you’ve probably got leaky ductwork. Call us at (713) 936-5800 and we’ll inspect your system and give you a written price. No surprises at the door.
Why Hollis Air Duct Houston Is Baytown’s Preferred Duct Sealing Company
We’ve worked enough homes across Baytown to know what the refineries do to ductwork. The reddish film inside return plenums, the rusted seams on pier-and-beam ranches, the mastic that peels within a season because it wasn’t rated for salt air. Our techs see it weekly. We’re part of the Garrison Partners family, and we run every job on The Garrison Standard: a written price before we start, technicians who are background-checked and uniformed, and a 365-Day Done Right Promise in writing. If our seal fails within a year, we return and fix it at no charge. That’s not a marketing line. It’s on every invoice.
Calls are answered by a live person, 24/7. You won’t get a voicemail loop when you call about duct sealing in Baytown. And our Duct Sealing team carries professional-grade equipment from Rotobrush and Nikro, the same negative-air machines commercial crews use. We serve Baytown with crews who know the local housing stock: 1950s brick ranches, pier-and-beam foundations, metal ducts that have sweat and rusted for sixty years in Gulf humidity.
Styles & brands we work with
HVAC Duct Sealing in Baytown
HVAC Duct Sealing in Baytown means closing every leak in your duct system so conditioned air reaches the rooms it’s meant for, not the attic or the crawlspace under your pier-and-beam home. Most Baytown homes lose 20 to 30 percent of cooled air through gaps at duct joints, supply boots, and return plenums. Sealing those leaks keeps your electric bill from climbing and your bedrooms from baking in July. A full HVAC duct sealing job in Baytown typically runs $350 – $700 depending on how many runs you have and how much access we need.
Sealing Methods That Hold Up to Salt Air
We use mastic and foil tape rated for corrosive environments, not the hardware-store stuff. Standard duct tape adhesive fails within weeks when Baytown’s humid, salty air works on it. The mastic we apply is formulated to resist sulfur compounds from refinery emissions, which degrade standard sealants in under a season. Where ducts have rusted through, we repair or replace the section first, then seal.
Why Baytown Homes Need It Sooner
Gulf Coast humidity accelerates mold growth in ducts, and salt-laden air from Galveston Bay corrodes metal seams faster than you’d see ten miles west. A gap that’s minor in Houston becomes a moisture path in Baytown, drawing humid outside air into your supply runs every cycle. Annual inspection is a practical necessity here, not an upsell.
Duct Repair in Baytown
Duct Repair in Baytown goes beyond sealing small gaps. It means fixing what the salt air and refinery fallout have already damaged: rusted-out galvanized sections, crushed flex runs under houses, disconnected boots, and return plenums carrying that telltale reddish film. Repair work in Baytown typically runs $400 – $900, depending on how much duct has failed and whether we need to access runs under a pier-and-beam home. We camera-inspect every run before quoting, so you see what we see and understand why the repair is necessary.
Rusted Seams on Pier-and-Beam Homes
Baytown’s older homes sit on pier-and-beam foundations, which means ductwork runs through a humid, salt-exposed crawlspace. Galvanized metal corrodes from the outside in. Sealing only the visible interior leaks while hidden under-house runs continue drawing salty air into the system won’t solve anything. We inspect the full run.
Repairing the Reddish Catalyst Film Problem
That reddish film inside your return plenum is a mix of rust dust from the ship channel and catalyst fines from the refineries. It signals accelerated metal corrosion and demands sealing methods that address micro-pinholes and seam gaps specific to salt-air exposure. We clean the plenum before sealing, because sealing over that film means the sealant bonds to corrosion, not metal.
Trusted Brands We Service in Baytown
We service and seal ductwork from all major manufacturers and stock parts locally so Baytown customers aren’t waiting on shipments. Our equipment roster includes Rotobrush rotary brush systems and Nikro negative-air machines, the same tools commercial crews use. We also work with filtration products from Honeywell and Aprilaire when a duct sealing job calls for upgraded filtration, which is common in Baytown given the particulate load from the petrochemical corridor. If your system needs a filter upgrade, we’ll tell you what it does and what it costs. Written down.
See the difference
Before
After
Before
After
Before
AfterCommon Duct Sealing Problems We See in Baytown Homes
- Sealing over damp, mold-lined duct interiors with foil tape alone. The tape lifts within weeks as Gulf humidity and salt air corrode the adhesive, leaving the original gaps open. The right fix is source removal first, then sealing.
- Using mastic not rated for coastal chemical exposure. Refinery-borne sulfur compounds degrade standard sealants, causing cracks and peeling in under a season. We use corrosive-environment-rated mastic on every Baytown job.
- Ignoring rusted-out duct seams on pier-and-beam homes. Sealing only visible interior leaks while hidden under-house runs continue drawing humid, salty air into the system defeats the purpose. Full-run inspection matters here.
- Fogging ‘sanitisers’ instead of fixing the leak source. A fogging treatment masks odors for weeks but does nothing for the gap drawing humid air into your ducts. Sealing the leak is what actually stops the musty smell from returning.
Pricing for Duct Sealing in Baytown, TX
A full duct sealing job in Baytown typically runs $350 – $900. Here’s what affects the number: how many duct runs your home has, whether we need crawlspace access under a pier-and-beam foundation, how much rust repair is needed before sealing, and whether the return plenum requires cleaning first. Smaller jobs, like sealing a single supply run, start around $150. Every quote is written down before work begins, and it does not move at the door. Call (713) 936-5800 for a free estimate. You’ll get the price on paper, not a teaser that balloons.
We Also Serve Cities Near Baytown
Our crews regularly seal ductwork in La Porte, Seabrook, Webster, and League City. If you’re in one of those communities and dealing with the same salt-air corrosion and refinery particulate issues we see daily in Baytown, call the same number: (713) 936-5800. We dispatch from our Houston office and serve the whole Baytown area locally.
Serving Baytown, TX - Our Local Coverage Area
We’re based in the Baytown 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 Baytown
The reddish film is rust dust from the ship channel mixed with catalyst fines from the petrochemical corridor, and it settles inside return plenums because Baytown’s air carries more fine particulates than surrounding suburbs. Sealing alone does not stop it. You need source removal first, then sealing with corrosive-environment-rated mastic to close the gaps that let that particulate-laden air keep entering.
Baytown homeowners should have duct seams inspected once a year, and twice a year if you live within a mile of the ship channel or refinery row. Salt air and sulfur compounds work faster on metal seams here than in Houston. Annual inspection catches small gaps before they become rusted-out failures that cost real money to repair. Call us at (713) 936-5800 to schedule one.
Yes, and for Baytown’s 1960s brick ranches it’s often the single highest-return HVAC improvement you can make. Original metal ducts from that era are typically uninsulated, which means they sweat in our humidity, accumulate dust quickly, and have seams that have been leaking for decades. Sealing those runs typically cuts 20 to 30 percent off your cooling bill and keeps rooms from cooking in August. The number you invest comes back through lower electric bills.
Sealing fixes the musty smell when the cause is humid outside air being drawn into your duct runs through gaps and seams. Fogging does not fix that. If our camera inspection shows mold inside the ducts themselves, we’ll tell you to do source removal first, then seal. If the mold is only on the outside of runs under a pier-and-beam home, sealing stops the air exchange and the smell goes away. We’ll show you the camera footage and explain exactly what’s needed, with a written price.
We use mastic and foil tape specifically rated for corrosive environments, which means they’re formulated to resist sulfur compounds and salt air that degrade standard sealants. We don’t stock hardware-store duct tape on our trucks. For Baytown homes near the refineries, we also recommend a filter upgrade from Honeywell or Aprilaire to capture catalyst fines before they enter your ducts, because sealing closes the gaps but doesn’t remove particulates already in the air stream.
Written by Roy Castellanos, Owner at Hollis Air Duct Houston, serving Baytown with written prices, background-checked technicians, and a 365-Day Done Right Promise.