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 McKinney
Duct sealing in McKinney typically runs $400 – $1,200 for a whole-home system, with most jobs completed in a single visit and priced in writing before we start. Our crews serve McKinney from our Dallas-Fort Worth dispatch office, so we’re familiar with the split personality of this market: the fast-growing developments west of town and the historic homes near Downtown McKinney that couldn’t be more different in what their ductwork needs. Whether you’re in a new build off Hardin Boulevard or a century-old bungalow near the square, we’ll show up uniformed, background-checked, and ready to seal your system by the book. Call (361) 326-5060 for a free estimate.
Why Hollis Air Duct Cleaning Is McKinney’s Preferred Duct Sealing Company
We’ve been part of the Garrison Partners family since 2004, and our Duct Sealing team has built a reputation in McKinney by doing what we say we’ll do. Our technicians know the local housing stock: they understand that a home in Stonebridge Ranch built in 1998 has flex duct runs in the attic that squirrels love to chew, while a Victorian near East Louisiana Street has original galvanized metal ducts that need hand work, not brute-force rotary brushes. Dispatch and scheduling are coordinated from our Dallas-Fort Worth office, but the crews that roll to McKinney are local to Collin County and know the roads, the builders, and the building codes. Calls are answered by a live person 24 hours a day, 7 days a week. The price is written down before any work starts, and every job carries our 365-Day Done Right Promise: if the seal fails or the problem returns within a year, we come back at no charge, including a free second visit.
Duct Insulation in McKinney
Duct Insulation in McKinney is often the missing piece in homes where the ducts are technically sealed but still bleeding temperature into the attic or crawl space. In McKinney’s climate, with AC running hard from May through October and heat cycling on through unpredictable winter cold snaps, uninsulated or poorly insulated ductwork forces your system to work longer to deliver the same air temperature. A typical duct insulation job in McKinney runs $300 – $800 depending on linear footage and accessibility, and we always price it in writing before we touch anything.
Attic Runs in Hot Texas Summers
McKinney attic temperatures regularly exceed 130°F in July and August. Exposed supply ducts up there are essentially trying to push 55°F air through a pizza oven. We wrap accessible runs with formaldehyde-free fiberglass insulation, sealed at the seams, so the air that reaches your bedrooms is still cold. This matters especially in two-story homes in Eldorado and west McKinney, where the longest duct runs serve the hardest-to-cool upstairs spaces.
Pier-and-Beam Crawl Spaces
Historic homes near Downtown McKinney often have ducts suspended in pier-and-beam crawl spaces that stay damp in spring and frigid in January. Insulation here prevents condensation that breeds mold and rusts metal fittings. We use closed-cell wrap on flex duct and rigid board on metal trunk lines, secured so it won’t sag or separate when critters pass through.
HVAC Duct Sealing in McKinney
HVAC Duct Sealing in McKinney addresses the leaks, gaps, and failed connections that let conditioned air escape before it ever reaches your rooms. In our climate, where systems run near year-round, even a 15% duct leakage rate can add hundreds to your annual energy bill. A whole-home HVAC duct sealing job in McKinney typically costs $400 – $1,200, depending on system size, duct material, and how much of the network is accessible. We use mastic and fiberglass mesh on metal ducts, proper mechanical connections on flex runs, and always verify our work with a pressure test when conditions allow.
Construction Debris in New Builds
Homes in Trinity Falls and other west-side developments often have ducts full of drywall dust and wood shavings from construction, plus joints that were never properly sealed by the builder. We clean first, then seal, so mastic adheres to metal instead of dust. A home we recently serviced off a gravel road near Trinity Falls had return ducts caked with construction drywall dust mixed with fine road silt, and supply runs in the attic with visible gaps at the joints. Our tech used negative pressure and HEPA filtration with Rotobrush agitation tools to remove the debris, then sealed the leaks with mastic and mesh, and added duct insulation on the exposed runs. The homeowner reported both a noticeable drop in dust on surfaces and a more consistent airflow to the back bedrooms.
Historic Metal Duct Restoration
Original round metal ducts under pier-and-beam houses near Downtown McKinney are often full of decades of dust and have never been properly sealed. These systems need hand-cleaning rather than rotary brushes, which can damage thin, corroded metal. We seal with high-temperature mastic rated for Texas attic conditions, and we always check the air handler cabinet and plenum for leaks that would bypass our work.
Trusted Brands We Service in McKinney
We stock parts and materials from Abatement Technologies, Guardsman, and Rotobrush, so McKinney homeowners aren’t waiting on a Dallas warehouse to ship sealant or insulation. Our Nikro negative-air machines and HEPA filtration rigs are the same equipment commercial crews use in hospitals and schools. We don’t show up with hardware-store tape and crossed fingers. When we seal your ducts, we use products rated for the temperature swings and humidity cycles that North Texas ductwork endures, and we explain what we’re applying and why before we open the first can of mastic.
Common Duct Sealing Problems We See in McKinney Homes
- Sealing only the ducts, not the air handler cabinet. Older McKinney homes, especially 1990s builds in Stonebridge Ranch, often have plenum leaks at the air handler that let unfiltered attic air bypass the filter entirely. We always pressure-test the full system, including the cabinet, or the seal is only half done.
- Taping over chewed flex duct without replacing damaged sections. Squirrels and raccoons in McKinney attics frequently chew through flex duct insulation. Slapping mastic on the outer jacket ignores the torn inner core and compressed insulation underneath. We cut out damaged sections and splice in new flex with proper collars and supports.
- Ignoring shared chases between ductwork and dryer vents. Historic downtown homes often have laundry runs that share a chase with HVAC ducts. Lint buildup restricts airflow and creates a fire hazard, but it also masks duct sealing benefits because the system can’t move designed CFM even with perfect seals. We inspect these chases and recommend dryer vent cleaning when needed.
- Undersized returns in new construction. Builders in Trinity Falls and other fast-growing areas sometimes install return ducts that are too small for the system tonnage, creating negative pressure that pulls dust and pollen through every crack. Sealing helps, but we also flag when a return needs upsizing to solve the root problem.
Pricing for Duct Sealing in McKinney, TX
Whole-home duct sealing in McKinney typically runs $400 – $1,200. Duct insulation alone is usually $300 – $800. What moves you within that range: how many linear feet of duct are accessible, whether we’re working in a tight attic or open crawl space, if we need to repair or replace chewed flex sections first, and whether the air handler cabinet also needs sealing. We don’t quote per-vent teaser prices that balloon once we’re inside. We inspect, we write the price down, and that number doesn’t move at the door. Estimates are free. Call (361) 326-5060 and we’ll schedule a look.
We Also Serve Cities Near McKinney
Our crews regularly work in McKinney and the surrounding communities: Melissa to the northeast, Princeton to the east, Allen to the south, and Anna to the north. The same 365-Day Done Right Promise, written pricing, and background-checked technicians apply in every town we serve.
Serving McKinney, TX - Our Local Coverage Area
We’re based in the McKinney 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 McKinney
Every 18 – 24 months, not the standard three-year urban cycle. McKinney’s rural-adjacent properties on unpaved roads and open land west and north of town pull airborne dust and pollen into return ducts at rates that overwhelm standard filters and fill ducts faster than suburban homes. Running a MERV 8 to 11 filter and scheduling professional duct sealing and cleaning on this shorter interval keeps your system from becoming a dust reservoir. Call (361) 326-5060 to set up a schedule that matches your property’s conditions.
Uneven temperatures between rooms, dust that returns quickly after cleaning, and utility bills that spike without rate increases are the three most reliable indicators. In McKinney’s climate, where AC runs constantly for months, duct leaks force longer run times that show up in kilowatt hours before you feel the discomfort. If your upstairs bedrooms in Eldorado or Stonebridge Ranch are always too hot while the downstairs freezes, the ducts are likely leaking pressure or losing temperature in the attic. Call (361) 326-5060 for a free inspection and we’ll tell you whether sealing, insulation, or both are needed.
Yes, but only after proper cleaning. New construction in Trinity Falls and other west-side developments often leaves drywall dust, wood shavings, and even fast-food wrappers in the ductwork, with joints that were never sealed by the builder. Sealing over this debris traps it and prevents mastic from bonding to metal. We clean first with negative-air HEPA extraction and Rotobrush agitation, then seal every joint and add insulation where attic runs are exposed. The result is a system that doesn’t recirculate construction debris for the first five years you own the home. Call (361) 326-5060 for an estimate on new-build duct sealing.
Historic homes near Downtown McKinney often have original round metal ducts under pier-and-beam construction, full of decades of dust and never properly sealed. These systems require hand-cleaning rather than rotary brushes, which can damage thin, corroded metal. We seal with high-temperature mastic rated for Texas conditions, and we always inspect the air handler cabinet and plenum for leaks that would bypass our work. The crawl space access is tighter, the work takes longer, and the attention to detail matters more. Call (361) 326-5060 and we’ll assess what your historic system needs.
Duct insulation prevents temperature loss that sealing alone cannot address. In McKinney, where attic temperatures exceed 130°F in summer and crawl spaces drop below 40°F in winter, even a perfectly sealed duct will bleed heating or cooling through thin metal walls. Insulation keeps the air at design temperature from the air handler to the register, which is what actually lowers your energy bill and evens out room temperatures. We typically recommend insulation on any attic or exterior-wall duct run in McKinney homes, priced separately and always in writing before we start. Call (361) 326-5060 to discuss whether your system needs sealing, insulation, or both.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving McKinney since 2004.