Duct Sealing in Kirby - Tested First, Written Price Second

Fast, Reliable Duct Sealing Across Kirby

Kirby sits entirely inside San Antonio’s beltway, which means your home’s HVAC system works harder than most Texans realize. With humidity staying high from March through November and summer temperatures pushing past 100 degrees, even small gaps in your ductwork can bleed 20 to 30 percent of your conditioned air into the attic. That’s air you’re paying to cool, never feeling. Our Duct Sealing team dispatches from our San Antonio office and typically reaches Kirby homes within the same scheduling window we quote, whether you’re off FM 78, near Kirby Middle School, or tucked into one of the neighborhoods between Binz-Engleman and Ackerman Road. Call (361) 326-5060 for a free written estimate.

Call (361) 326-5060

Why Hollis Air Duct Cleaning Is Kirby’s Preferred Duct Sealing Company

We’ve been sealing ducts in the San Antonio metro since 2004, and Kirby’s mix of 1970s ranch homes and newer infill construction keeps our crews busy year-round. The Garrison Standard means we arrive inside the window we promise, price every job in writing before touching equipment, and leave the site clean. Our 365-Day Done Right Promise covers every duct sealing repair in writing: if the seal fails or the leak returns within a year, we come back and make it right at no charge, including a free second visit.

Our technicians are background-checked and uniformed, and you’ll know who’s arriving before they pull into your driveway. Phones are answered by a live person 24 hours a day, 7 days a week, no voicemail loops. We also handle Air Duct Cleaning in Kirby and Dryer Vent Cleaning in Kirby, so one call covers your whole air distribution system.

HVAC Duct Sealing in Kirby

HVAC Duct Sealing in Kirby addresses a problem most homeowners don’t know they have: conditioned air escaping through gaps at joints, seams, and connections throughout the duct network. In Kirby’s housing stock, especially the flexible ductwork common in attics of homes built from the 1970s through the 2000s, these leaks develop from thermal expansion, vibration, and the simple settling that happens over decades. A typical whole-system duct sealing job in Kirby runs $450 to $1,200 depending on accessibility and the extent of damage. We use mastic sealant and metal-backed tape rated for high-temperature attic environments, not the hardware-store foil tape that peels off after one summer.

Attic Ductwork Sealing

Kirby’s attic temperatures routinely exceed 130 degrees in July and August, which degrades duct tape adhesive and cracks mastic that was applied too thin. We apply Abatement Technologies sealants in layers that cure properly even in extreme heat, and we test every joint with a pressure gauge before we leave.

New Construction and Infill Sealing

Homes built during Kirby’s 2010s growth spurt, including tracts near Kirby Heights, often have ductwork that passed a rough visual inspection but was never properly sealed at the register boots or return plenum. We find these leaks with a smoke pencil and seal them with the same mastic system we use on 40-year-old systems.

Duct Repair in Kirby

Duct Repair in Kirby becomes necessary when sealing alone won’t fix the problem: crushed flexible ducts, disconnected runs, or sections chewed by rodents that have found their way into attics from the surrounding greenbelt areas. In Kirby’s climate, a disconnected duct pumping conditioned air into the attic for a full summer can add $200 to $400 to your electric bill without you noticing until the upstairs bedroom won’t cool below 78 degrees. Duct repair in Kirby typically costs $200 to $600 per section, with full replacement of a damaged trunk line running $800 to $1,500. We price every repair in writing before cutting or removing anything.

Crushed or Kinked Flexible Duct

Installers working in Kirby’s tight attic spaces sometimes bend flexible duct around trusses in ways that restrict airflow by half. We replace the damaged section with proper-radius bends and support it with strap hangers so it stays open.

Return Air Path Repair

Many Kirby homes have return air pathways that were framed in walls without dedicated ductwork, pulling air from attics or wall cavities instead of from the rooms they’re supposed to serve. We seal these pathways with rigid ductboard or sheet metal so your system breathes the air you want it to breathe.

Trusted Brands We Service in Kirby

We carry sealants, tapes, and repair materials from Guardsman and Abatement Technologies on every truck, which means most Kirby jobs don’t wait for parts. For filtration upgrades tied to sealing work, we stock Aprilaire media cabinets and replacement filters sized to the systems common in Kirby’s 1,200 to 2,400 square foot homes. If your ductwork needs more extensive modification, we fabricate custom fittings on site rather than forcing stock parts into place. The result is a seal that holds up to Kirby’s temperature swings and humidity, not a temporary fix that fails before the next cooling season.

Common Duct Sealing Problems We See in Kirby Homes

• Construction debris in newer infill homes. In Kirby Heights and Windcrest Estates, we’ve found ducts still holding drywall dust and sawdust from original construction. This debris masks leaks during a quick visual check and accelerates sealant failure by preventing proper adhesion to the duct surface.
• Insect damage in warm attics. Kirby’s humid subtropical climate creates attic conditions that ants and roaches find habitable year-round. We’ve pulled flexible duct off runs where insects have chewed through the inner liner, creating leaks that standard sealing can’t address without section replacement.
• Failed tape at register boots. The connection between your ceiling register and the duct boot is a common failure point in Kirby homes, especially where original installers used cloth-backed duct tape. We remove the old tape entirely and seal with mastic rated for the temperature cycling these joints experience.
• Disconnected returns in wall cavities. Homes built during Kirby’s 1970s and 1980s expansion often pull return air through wall cavities that were never sealed from the attic. We install proper return ductwork or seal the cavities with ductboard so your system isn’t recirculating attic air.

Pricing for Duct Sealing in Kirby, TX

We Also Serve Cities Near Kirby

Our crews work throughout the San Antonio metro and beyond. We regularly handle Duct Sealing in Kirby and surrounding communities including Houston, San Antonio, Dallas, and Fort Worth. Scheduling is coordinated from our San Antonio office, with local crews dispatched to each market.

FAQs About Duct Sealing in Kirby