Duct Sealing in The Crossings - Tested First, Written Price Second

Fast, Reliable Duct Sealing Across The Crossings

Duct sealing in The Crossings, FL typically runs $450 – $1,200 for a whole-home job, and most Lennar-built homes here need it whether the owner knows it yet or not. We’re Hollis Air Duct Cleaning, part of the Garrison Partners family, and we’ve been working in South Florida since 2004. Our crews dispatch from our Miami office and serve The Crossings directly. We know the neighborhood’s streets, the builder-era floor plans, and the exact spots where the original flex duct fails. Call us at (361) 326-5060 for a free estimate.

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Why Hollis Air Duct Cleaning Is The Crossings’s Preferred Duct Sealing Company

We’ve earned our reputation in The Crossings by showing up on time, pricing in writing before we touch anything, and fixing the same builder-specific problems these homes were born with. Our technicians are background-checked and uniformed, and they follow The Garrison Code on every job: arrive inside the window, leave the site clean, stand behind the work for 365 days.

Our phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops. No callback queues. When you schedule Duct Sealing in The Crossings, you get a written price and our 365-Day Done Right Promise. If the seal fails within a year, we come back and make it right at no charge, including a free second visit.

We don’t compete on teaser coupons. We compete on discipline: show up when we said, price it before we touch it, do it by the book. That’s The Garrison Standard, and it’s how we’ve built trust across South Florida for more than twenty years.

Air Duct Sealing in The Crossings

Air Duct Sealing in The Crossings means closing the gaps, disconnected joints, and crushed flex runs that waste conditioned air in Lennar-built homes from the late 1980s and 1990s. Most homeowners call us because one room won’t cool, their electric bill climbed, or they noticed dust blowing from a register. The real culprit is usually the same: original R-4 or R-6 flex duct that sagged and pulled apart at the trunk connection, often above the master bedroom. A typical Air Duct Sealing job in The Crossings runs $450 – $850 for partial sealing of problem runs, and $800 – $1,200 for whole-home sealing with mastic and mechanical fasteners. We price by the system, not by the vent, and we put that price in writing before any work starts.

What We Seal and Why It Matters

We seal supply and return trunk connections, register boots, and plenum joints using duct sealing mastic and professional-grade reinforcement. In The Crossings, the critical failure point is almost always the attic flex run where it meets the rigid trunk. Conditioned air dumps into your attic instead of your bedroom. Your AC runs longer. Your bill climbs. We fix that.

Camera Inspection Before We Quote

We run a camera through the system first. You see what we see: the sag, the gap, the dust-packed joint. Then we write the price. No surprises at the door. That’s how Duct Sealing should work.

Duct Sealing Services in The Crossings

Duct Sealing Services in The Crossings address a community-wide pattern, not random wear. Nearly every home here was built by Lennar in the same decade with the same flexible ductwork design, so our crews see identical failures block after block. When a homeowner off the main loop calls about a hot second floor or rising FPL bills, we already know where to look. Duct Sealing Services range from targeted repairs of collapsed runs ($450 – $650) to comprehensive whole-system sealing with re-support and insulation touch-up ($900 – $1,200). Every job gets a written price upfront and the 365-Day Done Right Promise.

Re-Supporting Collapsed Flex Runs

The original Lennar flex duct was hung with basic strapping that loosens over decades. We re-support the run at proper pitch, eliminate the sag, and seal the reconnection. This prevents the same collapse from happening next season.

Mastic Sealing at Trunk Joints

We brush duct sealing mastic onto every joint, boot, and penetration. Unlike tape, which dries and fails in South Florida’s attic heat, mastic stays flexible and airtight for years. We use professional-grade products from Abatement Technologies and Honeywell filtration-compatible sealing methods.

Trusted Brands We Service in The Crossings

Our equipment roster includes Rotobrush rotary brush systems, Nikro negative-air machines, and sealing and filtration products from Honeywell, Aprilaire, and Abatement Technologies. These are the same tools commercial crews use, not hardware-store gear. We stock the mastics, mechanical fasteners, and reinforcement straps that Lennar-era flex duct needs, so The Crossings homeowners don’t wait on parts. Our Miami office coordinates dispatch and scheduling, and crews carry inventory for same-visit completion on most standard sealing jobs. When we find a crushed run above your master bedroom, we fix it then, not two weeks later.

Common Duct Sealing Problems We See in The Crossings Homes

• The master bedroom attic run collapses at the trunk. This is the signature The Crossings failure. The flex duct sags where it meets the rigid trunk line, pulling the connection apart and dumping cooled air into the attic. Homeowners notice the bedroom never reaches temperature while the AC runs nonstop.
• Condensation feeds microbial growth at joint seams. South Florida’s year-round humidity and near-constant HVAC runtime create persistent condensation inside original R-4 flex runs. The moisture collects at the same unsealed joints across the community, producing musty odors and visible growth at register boots.
• Dust packs the same connector fittings house after house. Decades of accumulation load the joints where flex meets metal. The restriction reduces airflow, strains the blower motor, and circulates particulates. Many neighbors had the identical repair last month without realizing it was a builder-wide issue.
• Updated AC units never addressed the original ducts. We see this constantly in The Crossings: a new 16-SEER condenser paired with 1992 flex duct full of gaps. The efficient equipment can’t perform when half the air never reaches the rooms. Sealing completes what the AC upgrade started.

Pricing for Duct Sealing in The Crossings, FL

We Also Serve Cities Near The Crossings

Our crews work throughout South Florida and travel to Jacksonville, Miami, Tampa, and Orlando for larger projects and property management accounts. Dispatch for The Crossings is coordinated from our Miami office, with local crews familiar with the area’s builder-era housing stock and climate-specific challenges.

FAQs About Duct Sealing in The Crossings