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.
Before
After
Before
After
Before
AfterFast, Reliable Duct Sealing Across Stafford
We’re the Duct Sealing team that serves Stafford from our Houston dispatch office, and we know the difference between a quick tape job and a repair that actually holds. Most calls we get from Stafford Run, the Southwest Freeway corridor, and neighborhoods off Staffordshire Road aren’t about new problems. They’re about decades-old ductwork that finally reached its limit. Our crews carry mastic, foil tape, and replacement flex in every van, and we price the work in writing before we touch anything. If your ducts are leaking conditioned air into the attic, pulling musty air back into your returns, or just not moving air the way they used to, call us at (361) 326-5060 for a free estimate.
Why Hollis Air Duct Cleaning Is Stafford’s Preferred Duct Sealing Company
We’ve been part of the Garrison Partners family since 2004, and our Stafford customers come back because we show them what we found. Not a blurry photo from someone else’s job, their own ducts, on their own screen, before we quote a dollar. The 365-Day Done Right Promise covers every sealing job in writing: if a joint we sealed fails within a year, we return and make it right at no charge, including a free second visit. Our technicians are background-checked, uniformed, and expected to operate by The Garrison Code: arrive inside the quoted window, price in writing, complete the job by the book, and leave the site clean. Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops. No callback queues.
HVAC Duct Sealing in Stafford
HVAC Duct Sealing in Stafford addresses a specific set of problems created by the city’s 1970s – 90s housing stock and its humid subtropical climate. The job involves locating leaks in your supply and return ductwork, sealing joints and plenum connections with mastic and foil tape, and reconnecting or replacing crushed or disconnected flex runs. A typical sealing job in Stafford runs $450 – $950 for a single system, depending on how many runs need attention and whether we find damage that requires replacement flex or insulation. Most Stafford homes need this work when rooms won’t heat or cool evenly, energy bills spike without explanation, or a duct cleaning reveals disconnected runs that have been pulling attic air for years.
Attic-Mounted Systems and Condensation Damage
Stafford’s slab-on-grade subdivisions like Stafford Run pair attic-mounted air handlers with original galvanized or early flex duct. After heavy spring rains, those runs sweat and grow mold in ways that drier Texas markets never see. We don’t just seal the leak. We seal the plenum, re-strap sagging flex, and replace waterlogged insulation so the fix lasts past the next storm.
Post-Construction Sealing for Newer Builds
Rapid commercial redevelopment along the Southwest Freeway has brought mixed-use developments where construction dust infiltrates loose return plenums. Unless every register boot and plenum joint is mastic-sealed, HEPA filtration upstream won’t stop debris from re-coating the system. We seal these systems before the first tenant moves in, or after they’ve learned the hard way.
Duct Repair in Stafford
Duct Repair in Stafford goes beyond sealing when the ductwork itself has failed. Crushed flex, corroded galvanized trunk lines, and rodent-damaged insulation are common in the city’s older subdivisions. A typical repair in Stafford runs $650 – $1,400 if we’re replacing multiple runs or a section of trunk line, or $200 – $400 for isolated flex replacement and reconnection. We see the most repair calls after duct cleanings reveal problems the homeowner didn’t know existed: a disconnected return pulling attic air, a supply run crushed by a storage box, or a trunk line so corroded that sealing alone would be a temporary patch on a permanent problem.
Disconnected and Crushed Flex Runs
Early flexible duct in Stafford’s older subdivisions sags and disconnects at takeoffs. A clean reveals the break, but without sealing and re-strapping the run, negative pressure just pulls attic air back into the supply and return ducts. We reconnect, seal with mastic, and support the run properly so it stays connected.
Galvanized Trunk Line Replacement
Original galvanized trunk lines in 1970s – 90s Stafford homes corrode from the inside out, especially where condensation collects. When we find this, we quote replacement in writing, show you the damage, and explain why sealing the joints would be money wasted on metal that’s failing structurally.
Trusted Brands We Service in Stafford
We seal and repair ductwork connected to every major HVAC brand found in Stafford homes, and we stock local parts for faster turnaround on jobs that need register boots, plenum sections, or flex duct replacement. Our equipment roster includes Rotobrush rotary brush systems for pre-seal cleaning, Nikro negative-air machines for containment, and filtration products from Honeywell, Aprilaire, and Guardsman. We don’t show up hoping we have what we need. We confirm the scope, load the van, and arrive ready to complete the job in one visit when possible.
Common Duct Sealing Problems We See in Stafford Homes
- Sweating galvanized trunks after spring rains. Stafford’s humid subtropical climate and slab-on-grade construction mean attic-mounted air handlers drip condensation onto original trunk lines. The water drips onto insulation, feeds mold, and corrodes metal. Resealing alone won’t fix it until the plenum is sealed and the run is properly insulated.
- Disconnected flex at takeoffs in Stafford Run and similar subdivisions. Decades of vibration and sagging pull early flexible duct away from connections. The system still runs, but it’s conditioning your attic instead of your bedrooms. We find these during camera inspections and reconnect them with mastic and mechanical supports.
- Construction dust infiltration in newer mixed-use builds. Commercial redevelopment along the Southwest Freeway has introduced buildings where return plenums weren’t sealed to code during construction. Fine dust bypasses filters and coats coils, reducing efficiency and indoor air quality. We seal every joint, boot, and plenum penetration.
- Crushed runs from attic storage or pest damage. Stafford homeowners often use attic space for storage, and a misplaced box can flatten a flex run. Rodents attracted to warm ductwork compound the problem. We replace crushed sections, seal the connections, and recommend exclusion measures.
Pricing for Duct Sealing in Stafford, TX
We believe you should know what duct sealing costs in Stafford before you call, so here’s what we charge. A standard sealing job for a single HVAC system in Stafford typically runs $450 – $950. Isolated repairs, like reconnecting one or two crushed flex runs, fall in the $200 – $400 range. More extensive work involving multiple run replacements, trunk line repair, or plenum rebuilds can reach $650 – $1,400. What moves the price: how many systems you have, how accessible your attic is, whether we find water damage or mold that requires remediation before sealing, and whether the original ductwork is salvageable or needs replacement. We inspect first, quote in writing, and start work only after you approve the price. No per-vent pricing. No teaser coupons that balloon once we’re inside. Call (361) 326-5060 for a free estimate.
We Also Serve Cities Near Stafford
Our crews work throughout the Houston metro, and we regularly dispatch to Stafford from our Houston office. We also serve Sugar Land, Missouri City, Bellaire, and Fresno with the same written pricing, background-checked technicians, and 365-Day Done Right Promise.
Serving Stafford, TX - Our Local Coverage Area
We’re based in the Stafford 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 Stafford
Stafford’s combination of 1970s – 90s housing stock, slab-on-grade construction with attic-mounted air handlers, and position in Houston’s Allergy Alley creates unique stress on ductwork. Original galvanized and early flex duct has had decades to corrode, sag, and disconnect, while humid conditions and heavy pollen loads make every leak more consequential for indoor air quality. Call (361) 326-5060 for a free inspection.
Musty air after rain usually means condensation inside your ductwork, often from sweating trunk lines or disconnected returns pulling humid attic air. At a 1980s Stafford Run home, our tech pulled a supply register and found the original galvanized trunk sweating in the attic, with two disconnected flex runs feeding a MERV rating – starved return. We ran a camera inspection through the air handler, resealed the joints and plenum with mastic and foil tape, and reconnected the crushed runs. Within days the musty smell was gone. Call (361) 326-5060 if you’re smelling this now.
A high-MERV filter only works if all air passes through it. Leaky returns pull unfiltered attic air directly into your system, bypassing the filter entirely. Sealing those returns ensures every cubic foot of air moves through your filtration before it reaches your living space. For Stafford homeowners who struggle with spring and fall pollen counts, this is often the missing piece. Call (361) 326-5060 to discuss your setup.
We run a camera inspection through the air handler and ductwork, and we test static pressure at the plenum and registers. Disconnected runs show up as pressure drops or visual gaps. Crushed flex is visible on camera and confirmed by reduced airflow at the register. We show you the footage before we quote any work. Call (361) 326-5060 to schedule an inspection.
They solve different problems. Duct cleaning removes debris that’s already inside your ducts. Sealing fixes the leaks that let debris in and conditioned air out. In Stafford’s older homes, we often find that a clean reveals disconnected runs that need sealing, or that sealing is pointless until the debris and mold are removed. We inspect and recommend the right sequence for your specific system. Call (361) 326-5060 for an honest assessment.
Ready to stop losing conditioned air to your attic and stop pulling musty, unfiltered air back into your home? Call Hollis Air Duct Cleaning at (361) 326-5060 for a free estimate on duct sealing in Stafford. We’ll inspect your system, show you what we find, and give you a written price before any work starts. Every job is covered by our 365-Day Done Right Promise.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Stafford and the Houston metro since 2004.