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.
Fast, Reliable Duct Sealing Across Westchase
We serve Westchase from our Miami scheduling office, and our crews know the area well enough to navigate gate codes, alley-loaded garages, and the deed restrictions that come with master-planned living. If your registers are sweating, your upstairs rooms smell musty after rain, or your energy bill has climbed without explanation, duct sealing is likely the fix. Call us at (361) 326-5060 for a free estimate. We arrive inside the quoted window, price the work in writing before we start, and back every job with our 365-Day Done Right Promise.
Why Hollis Air Duct Cleaning Is Westchase’s Preferred Duct Sealing Company
We’ve been in business since 2004 as part of the Garrison Partners family, and our Duct Sealing team has worked enough Westchase homes to know the difference between a standard attic fix and the slab-duct problems that dominate this market. Homeowners here aren’t dealing with generic leaks. They’re dealing with builder-grade flex duct stapled and taped in 140°F attics, and rigid duct runs encased in concrete that crack after soil saturation. We document everything. Written price before work starts. Photos before and after. Moisture readings. If an insurer needs evidence, we already have it.
Our technicians are background-checked, uniformed, and expected to follow The Garrison Code on every job: arrive inside the window, price in writing, complete the work by the book, leave the site clean. Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops. No callback queues. If the repair fails within a year, we return and make it right at no charge, including a free second visit. That’s not a slogan. It’s written on every job.
Duct Repair in Westchase
Duct Repair in Westchase usually means addressing two separate failure modes that rarely show up together in other markets: attic flex duct that’s pulling apart at stapled joints, and slab-encased rigid duct that’s cracked after soil movement from irrigation or heavy rain. A typical duct repair in Westchase runs $280 – $520 depending on accessibility and whether we’re working in a 140°F attic or cutting into a concrete slab perimeter.
Attic Flex Duct Restoration
The original builder-grade flex in most Westchase homes was never mastic-sealed. It was stapled and taped. After ten to fifteen years in unconditioned attic space, those joints loosen and pull in attic dust, fiberglass, and mold spores every time the system cycles. We cut out the compromised sections and replace them with properly sealed runs, or restore what’s salvageable with duct sealing mastic and mechanical fasteners rated for the temperature swing.
Slab Duct Diagnosis and Isolation
When rigid duct in the slab cracks, the first sign is usually condensation weeping through supply registers, not a visible leak. We pressurize the system and use camera inspection to locate the breach. If the crack is accessible, we seal it with epoxy compounds rated for underground ductwork. If the section is too far gone, we document the failure for insurance and quote a reroute through the attic.
Air Duct Sealing in Westchase
Air Duct Sealing in Westchase focuses on closing the gaps that let conditioned air escape into attics and soil gases enter living spaces. Most homeowners don’t realize how much air they’re losing until they see the pressure-test numbers. A typical whole-system duct sealing job in Westchase runs $450 – $780 for a single-story home and $680 – $1,100 for two-story layouts with longer duct runs and more joints to treat.
Mastic Sealing vs. Tape
Foil tape fails in Westchase attics. The adhesive degrades in 140°F summer heat and the humidity cycling loosens the bond. We use duct sealing mastic, a thick compound that hardens into a permanent seal and remains flexible enough to handle thermal expansion. It’s messier to apply. It takes longer. It actually works.
Pressure Testing and Verification
Before we seal, we measure duct leakage with a calibrated fan and manometer. After sealing, we test again. The homeowner sees both numbers. If we don’t hit the target reduction, we keep working. No guesswork. No “trust us, it’s better.” Proof on paper.
Trusted Brands We Service in Westchase
We stock parts and sealing compounds from Rotobrush, Nikro, and Abatement Technologies, the same equipment roster we use on commercial jobs across South Florida. For filtration upgrades tied to sealing work, we carry Honeywell and Aprilaire products. Westchase homeowners don’t wait on parts shipped from out of state. Our trucks carry mastic, mechanical fasteners, flex duct, and epoxy compounds for slab repairs. Most jobs finish in one visit because we planned for the local housing stock before we left the warehouse.
Common Duct Sealing Problems We See in Westchase Homes
- Stapled and taped flex duct in 140°F attics. The original builder-grade installation in Westchase tract homes used staples and foil tape instead of mastic. After a decade of heat cycling, the tape adhesive turns to powder and the staples tear through the inner liner. We find attic dust and mold spools packed into the supply lines.
- Slab-encased rigid duct cracked by soil movement. Heavy summer downpours and constant irrigation in Westchase’s master-planned neighborhoods saturate the soil around slab foundations. Rigid duct runs shift, crack, and pull in soil gases and moisture. The homeowner smells mustiness but can’t find a leak because it’s underground.
- Condensation-driven mold on north-facing duct trunks. Westchase’s humid subtropical climate keeps AC running nearly year-round. Leaky ducts on the north side of homes, where sun never hits the roof decking, run cold enough to condense attic moisture. Mold follows. Sealing stops the condensation by keeping attic air out and conditioned air in.
- HOA restrictions that complicate exterior work. Westchase and Citrus Park deed restrictions prohibit visible equipment, truck signage, or exterior staging. Our crews work from alley-loaded garages and carry equipment inside before unwrapping. Planning matters. We’ve been denied gate codes enough times to know to confirm them the night before.
Pricing for Duct Sealing in Westchase, FL
Whole-system duct sealing in Westchase typically runs $450 – $780 for single-story homes and $680 – $1,100 for two-story homes with attic and slab duct runs. Duct repair for isolated failures runs $280 – $520. These are honest ranges for our market, not teaser prices that jump once we’re inside.
What moves the number: accessibility (crawling a 140°F attic versus cutting a slab perimeter), the extent of original builder-grade tape failure, whether we need to replace sections or can seal in place, and whether insurance documentation requires additional moisture testing and photo logging. We give one flat price per system, agreed in writing before work starts. No per-vent pricing. No add-ons at the door. Call (361) 326-5060 for an exact quote. Estimates are free.
We Also Serve Cities Near Westchase
Our crews work throughout the region. If you’re looking for Duct Sealing in Westchase or nearby, we also serve Jacksonville, Miami, Tampa, and Orlando from our South Florida dispatch office. Each location operates independently under The Garrison Standard with the same written pricing and 365-Day Done Right Promise.
Serving Westchase, FL - Our Local Coverage Area
We’re based in the Westchase 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 Westchase
If water entered the ductwork, replacement is usually required for porous materials like flex duct or fiberglass liner. Rigid metal duct can often be cleaned and sealed if the water was clean and drying began within 48 hours. We document moisture readings, photo the damage, and test for mold before recommending either path, so your insurer has evidence they can’t dispute. Call (361) 326-5060 to schedule an inspection.
We pressurize the system to locate cracks, then use camera inspection to assess accessibility. Sealable cracks get epoxy compound rated for underground ductwork. Inaccessible or collapsed sections get documented for insurance and quoted for rerouting through the attic. The goal is isolating the slab runs from soil moisture, not just patching the symptom. Call (361) 326-5060 for a slab-duct assessment.
Most Westchase and Citrus Park HOAs prohibit visible equipment, truck wraps, or exterior staging. We confirm gate codes and parking rules the night before, carry equipment inside before unwrapping, and keep all work inside the garage or home. It takes more planning, but we’ve done enough Westchase jobs to know the routine. Call (361) 326-5060 and we’ll confirm your community’s specific requirements when we schedule.
Yes. North-facing roof decking stays cooler and wetter in Westchase’s humid climate. Leaky ducts in that attic zone pull in moist air, and the cold duct surface condenses it. Sealing the joints stops the air exchange, which stops the condensation, which stops the mold growth. We verify with before-and-after moisture readings. Call (361) 326-5060 to test your north-side duct trunks.
Photograph the water source, any visible duct damage, and moisture at registers. Keep receipts for emergency mitigation. Then call us. We provide written moisture readings, camera inspection footage, mold test results, and a detailed scope of work with pre- and post-sealing verification. Insurers deny claims without documentation. We build the file they need to approve it. Call (361) 326-5060 within 48 hours of water intrusion for the strongest claim support.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Westchase and the greater Tampa Bay area since 2004.




Before
After
Before
After
Before
After