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 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.
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
A typical whole-house duct sealing in Melissa runs $400 – $850 for a standard single-family home up to about 2,500 square feet. Duct repair for localized damage runs $250 – $600, with whole-section replacements at $800 – $1,200. What moves the price: system size, attic accessibility, whether we need to remove and replace degraded flex rather than seal existing joints, and whether the job follows a cleaning or stands alone.
We do not quote per-vent pricing. We do not bait with a low figure that balloons once the technician is inside. The price is written down before any work starts, and it does not move at the door. Every estimate is free. Call (361) 326-5060 and we’ll give you a firm range based on your system size and what you’re experiencing.
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.
Serving Melissa, TX - Our Local Coverage Area
We’re based in the Melissa 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 Melissa
Because production builders in Melissa’s new subdivisions often seal ducts last, after drywall sanding has already dumped fine white dust into the system. The tape and mastic at boot-to-drywall joints and the air handler plenum is frequently thin, rushed, or missing entirely. In a 10-year-old McKinney house we’re usually resealing aging flex; in Melissa, we’re often re-sealing brand-new joints that were never sealed right the first time. Call (361) 326-5060 for a free inspection and written estimate.
Yes, it’s one of the most common calls we get from Melissa’s new subdivisions. The dust is drywall debris left in the ducts at handover, and it’s recirculating because the returns or supply boots aren’t sealed to the drywall. A homeowner in Liberty called us after exactly this scenario. We found the air handler plenum mastic was thin and the boot at the primary supply had a quarter-inch gap. After we sealed both and rebalanced the registers, the dust stopped recirculating and the system held static pressure properly. Call (361) 326-5060 and we’ll camera-inspect your system.
We start with a static pressure test against the system design specs, then run a camera through the trunk and major branches. In Melissa’s new builds, the leaks cluster at predictable points: the plenum, boot-to-drywall transitions, and flex-run junctions in the attic. The pressure test tells us whether the system is losing air. The camera shows us where. Call (361) 326-5060 to schedule a test.
Yes. Poorly sealed ducts in unconditioned attic space pull humid North Texas air into the system during heavy May-through-September runtime. That moisture can condense on cool duct surfaces, wet insulation, and eventually grow mold at the joints. Sealing the leaks stops the moisture intrusion and lets the system dehumidify the living space instead of the attic. Call (361) 326-5060 for an evaluation of your system’s seal integrity.
If your Melissa home is new construction and the ducts are full of drywall dust, we recommend cleaning before sealing. Sealing over debris traps it in the system, where it continues to coat the blower motor and evaporator coil. In older homes with lighter accumulation, we may be able to seal first and clean after, depending on what the camera inspection shows. We’ll give you a written recommendation and price for both options before any work starts. Call (361) 326-5060 for a free assessment.
Ready to stop the dust and get your system sealed the way it should have been from day one? Call Hollis Air Duct Cleaning at (361) 326-5060 for a free estimate. We’ll give you a written price before any work starts, and every seal is backed by our 365-Day Done Right Promise. If it’s not right, we make it right at no charge.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Melissa since 2004.