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 Richardson
Duct sealing in Richardson, TX typically costs $450 – $1,200 for a whole-home job, depending on the number of attic runs and how much of the original flex duct has separated at the joints. Most Richardson homes need this work because their builder-grade ductwork from the 1980s and 1990s was never sealed properly at installation. We know this city’s housing stock well, and our Duct Sealing team reaches Richardson homeowners fast, with written pricing before any work starts. Call (361) 309-6223 for a straight answer on what your ducts actually need.
Richardson sits in the heart of Duct Sealing in Richardson territory that keeps us busy year-round. The combination of older brick veneer homes, long attic flex runs, and North Texas humidity creates a specific set of duct problems here that you won’t find in newer construction to the north. We’ve sealed enough attics in this city to know exactly what we’re going to find when we open the access hatch.
Why Hollis Air Duct Dallas Is Richardson’s Preferred Duct Sealing Company
Richardson homeowners call us because we show up when we said and the price on the written estimate is the price on the invoice. That matters in a city where too many homeowners have been burned by a low phone quote that ballooned once the van pulled into the driveway. Our duct sealing work in Richardson is covered by the 365-Day Done Right Promise. If a sealed joint fails within a year, we come back at no charge. That’s written on every job, not implied.
Roy Castellanos runs our crews under The Garrison Standard, which means background-checked, uniformed technicians who arrive inside the quoted window and leave your attic cleaner than they found it. Our Duct Sealing team has worked in every corner of Richardson, from Canyon Creek to the neighborhoods around Breckinridge Park. We know the duct layouts. We know the failure points. And we stock the mastic, foil tape, and replacement flex sections we need to finish most Richardson jobs in a single visit without running back to a supply house in Garland.
Styles & brands we work with
Duct Repair in Richardson
Duct repair in Richardson usually means one of three things: reconnecting flex duct that has pulled away from a register boot, patching holes in sheet metal trunk lines, or replacing collapsed sections of original builder-grade flex that have lost their inner liner. In homes built during the Telecom Corridor boom, the original ductwork is now 30 to 40 years old. That’s past its intended service life. Our techs routinely find separated joints in attic runs that have been silently leaking conditioned air into the hot attic since the first Bush administration.
Reconnecting Separated Flex Runs
Flex duct sags over time, especially in long attic runs where the original installer used too few support straps. Once a run separates at a boot or collar, your system starts cooling the attic instead of the bedroom. We reconnect the run, properly band it, and seal the joint with mastic so it stays connected.
Repairing Leaky Trunk Lines and Boots
Metal trunk lines and register boots develop gaps at seams and corners where the original tape has dried and peeled. These gaps pull in attic air, insulation fibers, and dust. We seal them with mastic applied by brush, not tape that fails again in two summers.
Expect to pay $200 – $500 for a typical duct repair in Richardson when the problem is a single separated run or a few leaky boots. A full attic with multiple failures runs higher, and we’ll show you photos of everything before we touch it.
Air Duct Sealing in Richardson
Air duct sealing in Richardson is the process of finding and closing every leak point in your duct system so the air your AC produces actually reaches the rooms you paid to cool. In a 1980s two-story brick home near the Telecom Corridor, a pressurized test often shows 20 – 30% leakage in the attic runs alone. That’s a third of your cooling budget escaping into a 140-degree attic in July. We seal those leaks with mastic and foil tape applied to every joint, boot, and seam.
Sealing Attic Runs in Two-Story Homes
Two-story Richardson homes suffer from long flex runs that snake from a central plenum to upstairs registers on the opposite side of the house. Every foot of unsealed flex duct loses pressure. The result is an upstairs that stays 8 degrees warmer than downstairs no matter how low you set the thermostat. Sealing those runs restores balanced airflow and lets the upstairs actually cool down.
Return-Side Sealing
Leaky return ducts pull hot, humid attic air into the system. During a Richardson July heat wave, that hot return air can cause the evaporator coil to ice up, which shuts the whole system down. Sealing the return side keeps attic air out and prevents the freeze-up calls we get every summer from homeowners who think their AC is broken.
Whole-home air duct sealing in Richardson runs $450 – $1,200 depending on the number of runs, accessibility, and how much of the original flex needs to be replaced rather than sealed. We give you a written price before the work starts, and that number does not change.
Trusted Brands We Service in Richardson
Our Richardson duct sealing work pairs with the filtration equipment already in your system. We regularly seal ducts downstream of Honeywell media cabinets, Aprilaire whole-home filters, and Abatement Technologies UV systems. Our crews use Rotobrush rotary brush systems and Nikro negative-air machines during the cleaning and sealing process, so the debris we dislodge gets captured by HEPA filtration before it can circulate through your living space. If you have a Nikro or Honeywell component in your attic, we know exactly how it interfaces with the flex runs we’re sealing, and we won’t compromise its performance by sealing around it improperly.
See the difference
Before
After
Before
After
Before
AfterCommon Duct Sealing Problems We See in Richardson Homes
- Builder-grade flex ducts from the 1980s losing their inner liner. The thin plastic liner cracks and separates over time, exposing the insulation layer and leaking conditioned air into the attic. In Richardson’s Telecom Corridor homes, this is the single most common failure we find.
- Long attic runs in Canyon Creek homes sagging and separating at the joints. Original installers in the 1980s and 1990s used fewer support straps than current code requires. After 30 years of North Texas heat cycles, the runs pull apart and the joints open up.
- Poorly sealed return ducts pulling hot attic air into the system. During July heat waves, this causes the evaporator coil to ice up. The homeowner sees warm air from the registers, calls for AC repair, and the real problem is a return leak we can seal in an afternoon.
- Construction dust and drywall debris left in ducts during the Telecom Corridor build-out. Many original fixtures and boot connections in Richardson homes we inspect were never cleaned at handover. Decades of dust has packed into the flex runs, and sealing those runs without cleaning first would just lock the debris in place.
Pricing for Duct Sealing in Richardson, TX
We don’t price per vent. A lot of companies do, and that’s how a $49 coupon becomes an $800 invoice. We price per system, and we write it down before we start. A typical single-system duct sealing job in Richardson runs $450 – $1,200. The range is driven by how many attic runs need attention, whether we’re replacing flex sections or sealing existing ones, and how much cleaning the ducts need first. If your ducts haven’t been cleaned and the runs are packed with construction dust and insulation fibers, we’ll recommend cleaning before sealing so the mastic bonds to the duct surface instead of a layer of grime. Call (361) 309-6223 for an exact quote on your Richardson home. Estimates are free, and the number we give you is the number you pay.
We Also Serve Cities Near Richardson
Our Duct Sealing crew covers Richardson and the surrounding communities. If you’re in Garland, Sachse, Rowlett, or Dallas, we bring the same written pricing and 365-Day Done Right Promise to your job. Call us and ask for a Richardson-area technician who knows the flex duct layouts common in 1980s and 1990s North Texas construction.
Serving Richardson, TX - Our Local Coverage Area
We’re based in the Richardson 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 Richardson
New construction in Richardson, especially infill builds and remodel jobs, often leaves drywall dust and construction debris inside duct runs during the build. That debris can settle into flex ducts and add weight that pulls joints loose within months of move-in. Builder-grade duct installs are also often rushed, with fewer support straps and incomplete mastic coverage at boots and collars. We routinely seal joints in Richardson homes that are only a year or two old, and the builder’s warranty rarely covers it. Call (361) 309-6223 and we’ll inspect your ducts and give you a written quote before any work begins.
Sealing ducts in a 1980s Richardson two-story balances the system by stopping the pressure loss that happens in long attic flex runs, especially where they sag and separate. Once those runs are sealed, more conditioned air reaches the upstairs registers. This is the fix for the classic “downstairs is freezing, upstairs is a sauna” problem that Richardson two-story homes are known for. Our mastic-and-tape sealing process directly addresses the leak points, not just the symptoms, so the temperature difference between floors typically closes by several degrees.
Sealing ducts alone won’t remove existing mold, but it does help prevent the conditions that let mold grow by keeping humid attic air out of your system. North Texas spring storms push moisture into attics, and a leaky return duct will pull that damp air straight into your HVAC. If the ducts stay wet, mold can form. If you’ve already got visible mold, we’ll tell you before doing any sealing work, because sealing over mold makes it harder to remediate. We can refer you to a local Richardson mold specialist and come back to seal the ducts properly once the contamination is handled.
Duct cleaning removes dust, debris, pet hair, and construction dust from the inside of the ductwork using rotary brush agitation and negative-air HEPA filtration. Duct sealing closes the leaks in the duct walls, joints, and connections so conditioned air doesn’t escape into the attic. In Richardson homes built during the Telecom Corridor era, the two are often needed together: decades of dust and drywall debris have built up inside original flex runs, and those same runs have separated at the joints. We clean first, then seal, so the mastic bonds to a clean surface. That combination gives you both cleaner air and a system that stops wasting cooled air into the attic.
You’ll notice uneven room temperatures, unusually high summer electric bills, or weak airflow from certain registers. In Canyon Creek specifically, we find sagging long flex runs in attics that have pulled apart at the joints and are pulling in insulation fibers and dust. If your AC runs constantly during Richardson’s summer heat and some rooms never get comfortable, the ducts are likely leaking. The surest check is a visual inspection of the attic runs, and we’ll do that as part of our free estimate. Call (361) 309-6223 and we’ll send a tech who knows exactly what Canyon Creek attic layouts look like.
Written by Roy Castellanos, Owner at Hollis Air Duct Dallas, serving Richardson and the surrounding communities with written pricing and the 365-Day Done Right Promise.