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 Pearland
Duct sealing in Pearland typically runs $400 – $900 for a whole-home seal on standard single-family homes, with post-storm inspections and documentation starting around $150. Our crews serve Pearland from our Houston dispatch office, and we’re familiar with the specific failure modes that hit homes here, from 1990s tract builds off Pearland Parkway to older ranch-style houses near downtown along FM 518. Call (361) 326-5060 for a free written estimate before any work begins.
We’ve been in this trade since 2004, and Pearland’s housing stock keeps us busy year-round. The combination of Gulf Coast humidity, attic ductwork in unconditioned spaces, and the occasional tropical storm means duct sealing here isn’t just about stopping air leaks. It’s about knowing when a duct can be sealed and when it’s too compromised to save. That’s a distinction that matters for your air quality, your energy bills, and whether your insurer will cover the work.
Why Hollis Air Duct Cleaning Is Pearland’s Preferred Duct Sealing Company
We’re part of the Garrison Partners family, and every Hollis location runs on The Garrison Standard. That means written prices before we touch anything, background-checked uniformed technicians, and a 365-Day Done Right Promise backed in writing. If the seal fails within a year, we come back and make it right at no charge, including a free second visit.
Pearland homeowners call us because we’ve seen what this climate does to ductwork. Our Duct Sealing team knows the difference between a simple collar leak and a flex run that’s been heat-cycled into failure. We don’t guess. We open the attic, run a camera, and show you what we see.
Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops, no callback queues. When you’re dealing with post-storm water intrusion or a musty smell that won’t quit, that matters.
Our crews carry professional-grade equipment from Nikro and Abatement Technologies, the same negative-air machines and rotary systems commercial crews use. We explain what the tool does and why we’re using it on your home. No jargon without translation.
Duct Repair in Pearland
Duct Repair in Pearland usually addresses sections of ductwork that have suffered physical damage, collapsed flex runs, or corrosion from years of humidity exposure. In Pearland’s market, typical duct repair runs $250 – $600 per section, depending on accessibility and whether the damage is localized or spread across multiple runs. We always inspect with a camera before quoting, because what looks like a single tear from below can be three compromised joints once we’re in the attic.
Storm Damage and Water Intrusion
After tropical weather hits Pearland, we find the worst damage where homeowners least expect it. The return side near the air handler is the usual culprit. Water wicks along the inner liner, mold spots develop on the downstream side, and pest entry points open where the collar tape has failed. We document everything with timestamped photos tied to the storm date. That packet is what gets your insurer to say yes.
Heat-Cycled Flex Duct in Attics
Pearland’s 1990s – 2010s tract homes, many built by Perry, David Weekley, and Lennar, run flexible ductwork through attics that hit 140°F in July. A single summer of that cycling can collapse the outer vapor barrier. The insulation gets soaked with condensation. The duct sags. From the living room, you just feel weak airflow. From the attic, we see a flex run that’s been slowly dying for years. Repair means replacement of that section, not a tape patch that’ll fail by October.
Air Duct Sealing in Pearland
Air Duct Sealing in Pearland targets the gaps, joints, and collar connections where conditioned air escapes into attics, crawl spaces, or wall cavities. A whole-home seal in Pearland’s market typically costs $400 – $900 for standard single-family homes, with larger homes or complex attic layouts running toward the higher end. The work pays back through lower energy bills and more even temperatures room to room, but only if the ducts are worth sealing in the first place.
When Sealing Makes Sense
We seal ducts that are structurally sound but leaking at connections. Mastic applied to rigid metal joints, collars properly secured, flex runs supported so they don’t kink. The goal is simple: the air you paid to cool should reach the register, not the attic. In Pearland, where AC runs eight months a year, that adds up fast.
When Sealing Is a Mistake
We won’t seal over wet ductwork. We won’t mastic a flex run whose vapor barrier has already failed. And we won’t skip the camera inspection of the return side after any water event. Trapping moisture inside a sealed duct is how you get a mold bloom that spreads through the whole system. We check first, document what we find, and tell you straight whether sealing is the right move or if that section needs to come out.
Trusted Brands We Service in Pearland
Our trucks stock parts and materials from Honeywell, Aprilaire, and Abatement Technologies, so most Pearland jobs don’t wait on a parts run. We carry mastic rated for high-humidity environments, collar connectors sized for the flexible duct common in local tract homes, and filtration upgrades that handle the pollen and mold spore load this region throws at HVAC systems. When we quote a job, we’re quoting with parts we have on hand, not hoping the supplier has what we need.
Common Duct Sealing Problems We See in Pearland Homes
- Condensation-soaked flex duct in unconditioned attics. Pearland’s humidity plus attic heat equals sweat inside the duct insulation. The vapor barrier fails, the fiberglass gets wet, and the duct loses both structural integrity and R-value. Sealing the joints doesn’t fix the underlying saturation. We replace the compromised section, then seal the new run properly.
- Post-storm water lines inside return ducts. After heavy rain or tropical weather, we find visible water marks on the inner liner of return ductwork near the air handler. The collar connections are the entry point. We document the water line with photos, replace saturated sections, and seal the new joints with mastic so the insurer can see exactly what failed and what was fixed.
- Pest entry through failed collar tape. Humidity degrades the adhesive on duct tape faster here than in drier climates. Gaps open at flex-to-metal connections. Rodents and insects find them. We see this especially in slab-on-grade homes where the return path runs low through the attic. Proper sealing means mastic, not tape, and mechanical support so the connection doesn’t flex and crack.
- Original galvanized duct in pre-1990s Pearland homes. Near downtown and along older stretches of FM 518, we still find galvanized steel ductwork from the 1970s and 80s. The seams corrode, the joints loosen, and no amount of mastic will hold where the metal itself is failing. These systems need section replacement before sealing can work.
Pricing for Duct Sealing in Pearland, TX
A typical whole-home duct sealing in Pearland runs $400 – $900. Post-storm inspection with full camera documentation starts around $150 and ranges to $350 depending on system size and attic accessibility. Duct repair for individual damaged sections falls between $250 – $600 per section. What moves the price: how many runs need attention, whether we’re working in a tight attic or a spacious one, and whether we find water damage that requires replacement before sealing can begin.
We give you a written price before any work starts. That price does not move at the door. No per-vent add-ons, no “we found another problem” surprises. One flat price per system, agreed in writing, backed by our 365-Day Done Right Promise. If the seal fails within a year, we return and make it right at no charge. Call (361) 326-5060 for a free estimate.
We Also Serve Cities Near Pearland
Our crews work throughout the Houston metro area, including Pearland and neighboring communities. We regularly dispatch to Friendswood, South Houston, Webster, and Manvel for duct sealing, repair, and post-storm inspections. The same written pricing, same documentation standards, same 365-Day Done Right Promise apply in every city we serve.
Serving Pearland, TX - Our Local Coverage Area
We’re based in the Pearland 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 Pearland
We run a camera inspection and look for three things: a visible water line on the inner liner, saturated insulation that won’t dry, and mold spots that have penetrated the duct wall. If the water line is present but the liner is intact and dry, cleaning plus collar sealing usually works. If the insulation is soaked or mold has rooted into the material, that section gets replaced. We document everything with timestamped photos tied to the storm date so your insurer sees exactly why we chose replacement over cleaning.
Gulf Coast humidity is the short answer. The longer answer is that Pearland’s slab-on-grade tract homes run flexible duct through unconditioned attics where summer temperatures exceed 140°F. The temperature differential between the cool air inside and the hot attic outside causes condensation on the duct exterior. When the vapor barrier fails, that moisture soaks the insulation and eventually the inner liner, creating exactly the environment mold needs. Drier climates don’t have the humidity load, and homes with basements or conditioned attics don’t have the temperature swing. Pearland has both.
DIY sealing after water intrusion is risky and usually hurts your claim. Insurers want professional documentation: timestamped photos, moisture readings, a clear statement of what was wet and what was dry, and evidence that compromised sections were replaced rather than covered up. If you seal over wet ductwork with store-bought tape, you trap moisture, guarantee mold growth, and give the insurer a reason to deny later damage. We document before we touch anything, and we write the report in the format adjusters expect.
It reduces the humidity load your AC has to handle. In Pearland, where outdoor humidity stays above 70% for months, every cubic foot of attic air that leaks into the return duct brings moisture with it. Your system works harder, runs longer, and still leaves rooms feeling clammy. Sealing the return side is especially critical here. It also cuts energy bills by 15 – 30% in typical Pearland homes, based on what we see after sealing jobs. The savings are real, but only if the ducts are dry and sound to begin with.
Completely different. Galvanized steel from the 1970s and 80s corrodes at the seams and loosens at the joints. Mastic won’t bond to rust, and the metal itself is often too thin to support a lasting seal. We typically replace sections with modern flex or sheet metal, then seal the new connections properly. Newer tract homes have different problems: intact metal but failed flex connections, or flex runs whose vapor barrier has heat-cycled into failure. The diagnosis drives the approach, and we don’t quote until we’ve seen what’s actually in your attic.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Pearland and the greater Houston area since 2004.