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 Dickinson
We’re the crew Hollis Air Duct Cleaning sends to Dickinson when homeowners need ductwork that actually holds pressure, not just tape slapped over a leak. Our Duct Sealing team works the full 77539 ZIP code, from the older pier-and-beam ranches near Dickinson Bayou to the slab-on-grade subdivisions off FM 517 and the newer developments toward League City. Dispatch and scheduling run through our Houston office, but our trucks roll into Dickinson with mastic, foil tape, and the same Rotobrush and Nikro gear we use on commercial jobs. If your ducts are whistling, your bills are climbing, or you’re still catching a musty note after a previous “clean,” call us at (361) 326-5060. We’ll give you a written price before we touch anything, and we back the work with our 365-Day Done Right Promise.
Why Hollis Air Duct Cleaning Is Dickinson’s Preferred Duct Sealing Company
We’ve been in this trade since 2004 as part of the Garrison Partners family, and Dickinson is not new territory for us. We know the difference between a 1960s ranch on pier-and-beam with galvanized metal trunk lines and a 2005 slab-on-grade with flex duct sweating in a hot attic. That matters because the sealing approach is completely different. Our technicians are background-checked, uniformed, and expected to arrive inside the quoted window, price in writing, and leave the site clean. That’s The Garrison Standard. Every repair carries our 365-Day Done Right Promise: if it fails 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.
Air Duct Sealing in Dickinson
Air Duct Sealing in Dickinson starts with understanding what you’re actually sealing. In this market, that often means finding duct systems that were submerged during Hurricane Harvey, partially cleaned, and never properly remediated. We pull cameras before we seal. The job involves pressure-testing the system, locating leaks with smoke or digital manometers, cleaning contaminated surfaces so sealant will bond, then sealing joints, boots, and connections with mastic or foil tape rated for HVAC use. A typical Air Duct Sealing job in Dickinson runs $450 – $1,200 depending on system size, access difficulty, and whether we need to clean before we seal. Whole-home sealing on larger systems with attic flex duct can reach $1,500 – $2,200.
When Sealing Comes After Flood Damage
We see this constantly in Dickinson. A homeowner had ducts “cleaned” after Harvey, but the crew never pulled a camera, never removed silt from the trunk line, and never treated mold. Now the mastic or tape from a subsequent sealing job is lifting off contaminated metal. We clean first, seal second, and we show you the camera footage so you know why.
Humidity and Salt-Air Corrosion
Dickinson sits just inland from Galveston Bay. The salt air and near-constant humidity corrode metal trunks and saturate flex duct. Sealing a sweating line without addressing condensation just traps moisture. We check for proper insulation and vapor barriers before we seal, because a sealed wet duct is a sealed mold problem.
Duct Sealing Services in Dickinson
Duct Sealing Services in Dickinson cover everything from spot-sealing a whistling boot connection to full-system mastic sealing on corroded trunk lines. We use professional-grade equipment from Rotobrush, Nikro, and Abatement Technologies, plus filtration products from Honeywell and Aprilaire when the job requires air scrubbing during work. Most Dickinson homeowners need sealing when they notice uneven temperatures between rooms, dust blowing from registers, or energy bills that spike despite normal usage. Because Dickinson’s HVAC systems run almost year-round in this humid subtropical climate, small leaks compound fast. A typical spot-sealing job runs $250 – $450. Full-system sealing on a standard 3-ton residential system averages $650 – $1,100.
Camera Inspection Before Seal
We won’t seal what we haven’t seen. Our Nikro camera systems let us document crushed flex, disconnected boots, or silt deposits before we quote. You get the footage. The price is written down before work starts. No surprises at the door.
Mastic vs. Tape Applications
Metal trunk lines in older Dickinson homes get brush-applied mastic at joints and seams. Flex duct connections get foil tape rated for temperature cycling. We don’t use duct tape, the gray cloth stuff, on anything. It fails in months in this humidity.
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 Dickinson
Our trucks carry sealing and filtration products from Honeywell, Aprilaire, and Abatement Technologies, plus Nikro negative-air machines and Rotobrush rotary systems for pre-seal cleaning. We don’t run to a supply house mid-job. For Dickinson homeowners, that means we can clean, inspect, and seal in one visit without leaving to chase parts. The equipment we use is the same grade commercial crews run on schools and medical facilities. We explain what each tool does and why it matters to the air moving through your home, because a homeowner who understands the work can spot a shortcut.
Common Duct Sealing Problems We See in Dickinson Homes
- Mastic lifting off contaminated metal. In flood-prone neighborhoods along Dickinson Bayou and near FM 517, we find trunk lines that were never properly cleaned after Harvey. Silt and mold prevent sealant bonding. The tape looks fine for a month, then peels.
- Flex duct soaked from humidity and salt air. Attic runs in 1990s – 2000s subdivisions trap condensation. Sealing the exterior without checking interior moisture just encapsulates a mold colony.
- Sealed-over crushed or disconnected sections. In slab-on-grade homes built after the 1980s, ductwork is buried or in tight attic spaces. Without camera inspection, a crew can seal right over a disconnected boot. The leak path stays open; the homeowner pays for nothing.
- Fogging upsells that replace real work. We see this too often. A crew sprays a “sanitiser” into ducts, calls it clean, then seals over contamination. Fogging does not remove silt, mold, or debris. It smells nice for a day. We don’t offer it as a substitute for source removal.
Pricing for Duct Sealing in Dickinson, TX
A typical duct sealing job in Dickinson runs $450 – $1,200 for residential systems up to 2,000 square feet. Whole-home sealing on larger homes or systems with difficult attic access ranges $1,200 – $2,200. Spot repairs, boot reconnections, or single-register sealing start around $250 – $450. What moves the price: system size, number of registers, whether we need to clean before sealing, and access difficulty. Slab-on-grade homes with buried ductwork or tight attic runs take longer. We give you one flat price per system, agreed in writing before work starts. No per-vent pricing. No add-ons at the door. Call (361) 326-5060 for a free estimate. We’ll inspect, camera where needed, and quote on the spot or schedule a return if the job is complex.
We Also Serve Cities Near Dickinson
Our crews work Duct Sealing in Dickinson and the surrounding communities: Bacliff, Santa Fe, Kemah, and League City. Same standards, same written pricing, same 365-Day Done Right Promise in every town we serve.
Serving Dickinson, TX - Our Local Coverage Area
We’re based in the Dickinson 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 Dickinson
Dickinson’s humid subtropical climate and proximity to Galveston Bay mean near-constant moisture and salt air. Leaky ducts pull that humid air into wall cavities and attic spaces, accelerating mold growth and corrosion. In drier markets, a small leak wastes energy. Here, it rots your house. Call (361) 326-5060 for a free estimate.
Only after proper cleaning and inspection. We pull cameras to verify silt and mold are removed. Sealing over contaminated metal fails within months. We’ve rebuilt trunk lines that were “cleaned” by other crews and found bayou mud still inside. Call (361) 326-5060 and we’ll show you what you’re working with.
It can, if the smell comes from leaks pulling attic or crawlspace air into the system. But if the smell comes from mold inside the duct, sealing alone won’t fix it. We clean first, then seal. The combination is what clears the air. Call (361) 326-5060 for an inspection.
We use flexible camera systems and rotary whips that navigate tight spaces. For slab-buried duct, we inspect from registers and accessible junctions. If sections are crushed or disconnected, we locate the problem before we quote repair. No guesswork. Call (361) 326-5060 to schedule.
Refuse fogging or “sanitising” sprays sold as cleaning. They don’t remove silt, mold, or debris. Refuse sealing without camera inspection in post-Harvey homes. Refuse per-vent pricing that balloons at the door. Demand one flat price per system, in writing, before work starts. That’s what we provide. Call (361) 326-5060.
We pulled a camera down the return trunk of a 1970s pier-and-beam ranch off the FM 517 corridor and found caked bayou silt and active mold growth in a corroded metal trunk that a post-Harvey ‘clean’ had missed entirely. Our techs ran a Rotobrush whip and HEPA-filtered negative pressure to source-remove the debris, then sealed the rusted joints and boot-to-floor connections with mastic before the homeowner saw a single register. The system stopped short-cycling and the musty smell in the hallway cleared within a week.
Because so much of Dickinson’s housing sits in FEMA flood zones along Dickinson Bayou and the FM 517 corridor, a large share of duct systems here were submerged during Harvey and only partially remediated, so sealing work often starts with finding silt and mold still sitting in trunk lines and floor registers, not with chasing air leaks. This is the reality of working in Dickinson. We don’t pretend otherwise. We inspect, we document, we clean what needs cleaning, and we seal what can be sealed. If the trunk line is too corroded, we’ll tell you. The Garrison Code requires it.
Ready to stop throwing money into leaky ducts? Call Hollis Air Duct Cleaning at (361) 326-5060 for a free estimate on duct sealing in Dickinson. We’ll arrive inside the quoted window, give you a written price before any work starts, and back every repair with our 365-Day Done Right Promise. If it’s not done right, we make it right. That’s The Garrison Standard.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Dickinson since 2004.