Duct Sealing in Melissa - Tested First, Written Price Second

Fast, Reliable Duct Sealing Across Melissa

Duct sealing in Melissa typically runs $400 – $850 for a whole-house seal on a standard single-family home, with most jobs completed in a single visit. Our crews are dispatched from the Dallas-Fort Worth office and carry mastic, foil tape, and pressure-testing gear specifically for the new-construction duct failures we see in Melissa’s master-planned communities. If you’re in Liberty, North Creek, or anywhere along FM 720 and your system is blowing fine white dust or your utility bills are climbing through the summer, call us at (361) 326-5060. We’ll give you a written price before any work starts, and every seal is covered by our 365-Day Done Right Promise.

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

We’ve been serving North Texas since 2004 as part of the Garrison Partners family, and our Duct Sealing team knows Melissa’s housing stock better than most crews who drive up from Dallas. The homes here aren’t like the 1990s builds in McKinney or the aging ranch stock in Westminster. Melissa’s explosive growth in the last decade means we’re working in houses where the drywall dust is still fresh and the builder-grade tape hasn’t peeled yet.

Our technicians are background-checked and uniformed, and they arrive inside the quoted window. The price is written down before any tool comes out of the van. If a seal fails within a year, we come back and make it right at no charge, including a free second visit. That’s not a slogan. It’s written on every job ticket.

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 construction dust recirculating through a two-year-old house, you don’t want to wait until Monday for an answer.

HVAC Duct Sealing in Melissa

HVAC Duct Sealing in Melissa is different from the same job in older Collin County towns because the failures we’re fixing are almost always new-construction defects, not age-related deterioration. A typical HVAC duct sealing job in Melissa runs $400 – $850 for a whole-house seal, depending on system size and accessibility. The work involves locating leaks with a pressure test, sealing joints with mastic and foil tape at the air handler plenum, boot-to-drywall connections, and flex-run junctions, then verifying the fix with a second pressure reading.

Melissa homeowners usually call us when they notice uneven temperatures between rooms, dust that won’t stop settling after cleaning, or utility bills that spike during May-through-September cooling season. In new subdivisions like Liberty and North Creek, the root cause is often that production crews sealed the ducts last, after drywall sanding had already filled the system with fine white debris.

Pressure Testing and Leak Location

We start every seal job with a static pressure test and visual camera inspection. In Melissa’s new builds, the leaks cluster at predictable points: the air handler plenum where it meets the trunk line, the boot-to-drywall transitions in ceiling returns, and the flex-run connections in unconditioned attic space. The pressure test gives us a baseline. The camera shows us where the builder’s tape is thin or missing entirely.

Mastic Application and Final Verification

We seal with fiberglass-reinforced mastic at the plenum and boots, then foil tape rated for temperature cycling on flex joints. After the seal, we run a second pressure test to confirm the system holds static the way the manual specifies. In Melissa’s climate, that matters. A system leaking attic air works harder from May through September, and the humidity those leaks pull in can condense on cool duct surfaces.

Duct Repair in Melissa

Duct Repair in Melissa addresses the physical damage that happens when construction debris, humidity, or pest intrusion degrades the duct material itself. A typical duct repair in Melissa runs $250 – $600 for localized fixes like flex replacement or plenum patching, with whole-section replacements reaching $800 – $1,200 depending on access and material. The job involves cutting out damaged sections, installing new flex or sheet metal, sealing all joints, and rebalancing airflow to affected rooms.

In Melissa’s newer homes, we see less of the crushed flex and rusted metal that aging systems develop. What we do see is flex runs chewed by rodents in attic spaces, plenums cracked from improper support during installation, and boots torn loose from drywall by the pressure of a blower motor straining against sealed-shut registers. The construction debris left in new ducts accelerates wear on the blower and can overload the system enough to cause physical damage.

Flex Run Replacement

When flex duct in an unconditioned Melissa attic has been compromised by moisture, pests, or installer error, we cut out the damaged section and install new insulated flex with proper support straps every four feet. The connections get mastic and mechanical fasteners, not just tape. In North Texas humidity, a sagging flex run collects condensation. A properly supported run drains and dries.

Plenum and Boot Restoration

The plenum, where the air handler meets the trunk line, is a common failure point in Melissa’s new builds. Production crews sometimes rush this joint, applying thin mastic that cracks during the first heating season. We remove the failed material, clean the surface, and apply a proper bed of mastic reinforced with mesh. The boot-to-drywall joint gets the same treatment, sealed to the wall or ceiling penetration so attic air stays in the attic.

Trusted Brands We Service in Melissa

Our vans carry sealing and filtration products from Honeywell, Aprilaire, and Abatement Technologies, plus rotary brush systems from Rotobrush for jobs where cleaning precedes sealing. We stock local parts for Melissa customers, which means no waiting on a Dallas warehouse for standard fittings. Most seal jobs and repairs are completed same visit because the materials we need are already on the truck. When a Liberty homeowner calls with a failed plenum seal or a North Creek return pulling attic air, we diagnose, price in writing, and fix without a return trip.

Common Duct Sealing Problems We See in Melissa Homes

• Builder-grade foil tape peeling at boot-to-drywall joints. In newer Liberty and North Creek homes, the tape production crews use on register boots often fails within a season or two of heavy summer runtime. The gap pulls attic insulation and drywall dust straight into the supply and return ducts, which is why that fine white film keeps coming back no matter how often you clean.
• Drywall sanding dust coating the blower motor and evaporator coil. When ducts aren’t sealed at handover, the debris left from construction circulates through the system instead of being trapped by the filter. The dust coats the coil, reducing heat transfer, and wears the blower bearings prematurely. We’ve opened air handlers in two-year-old Melissa homes that looked like they’d been running for twenty.
• Poorly sealed flex runs sweating in unconditioned attic space. North Texas humidity plus heavy May-through-September runtime means any leak at a flex joint pulls moist attic air onto the cool duct surface. The condensation wets the insulation, degrades the vapor barrier, and eventually grows mold at the joint. Homeowners smell it before they see it.
• Return ducts pulling air from wall cavities and attic space. In Melissa’s open-concept floor plans, the central return is often a long flex run with multiple joints. If any connection leaks, the system pulls unconditioned, unfiltered air from wherever it can find it. The house never quite reaches set temperature, and the filter loads with construction debris faster than it should.

Pricing for Duct Sealing in Melissa, TX

We Also Serve Cities Near Melissa

Our crews work throughout Collin County and beyond. If you’re in Melissa, Anna, McKinney, Westminster, or Princeton and your ducts are leaking, blowing dust, or struggling to hold temperature, we cover your area. Dispatch is coordinated from our Dallas-Fort Worth office, with local crews serving each community.

FAQs About Duct Sealing in Melissa