Duct Sealing in Seminole - Tested First, Written Price Second

Fast, Reliable Duct Sealing Across Seminole

We’re the crew that shows up to Seminole homes when the musty smell keeps coming back no matter how many times the ducts get cleaned. Our Duct Sealing team dispatches from our South Florida scheduling office and runs trucks to Seminole neighborhoods like Seminole Grove Estates and Lake Seminole Village with the tools and materials to fix duct board, not just vacuum metal. If your 1970s ranch has that familiar sour odor every time the AC kicks on, call (361) 326-5060. We’ll give you a written price before we touch anything, and every seal is covered by our 365-Day Done Right Promise.

Call (361) 326-5060

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

We’ve been doing this since 2004 as part of the Garrison Partners family, and we’ve learned that Seminole isn’t like inland Florida. The peninsula sits between the Gulf and Tampa Bay, so salt aerosol and humidity work together year-round to break down fiberglass duct board in ways you don’t see in Largo or Pinellas Park. Our technicians are background-checked, uniformed, and trained to that standard. When we price a job in Seminole, the number is written down before any work starts and it doesn’t move at the door. Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops. No callback queues. If the seal fails within a year, we come back and make it right at no charge, including a free second visit.

Duct Repair in Seminole

Duct Repair in Seminole usually means fixing what humidity, salt air, and decades of Florida heat have done to original fiberglass duct board and flex runs in 1960s through 1980s ranch homes. We find crushed flex behind air handlers, supply trunks disconnected and blowing attic air into living rooms, and duct board so porous that standard cleaning just pushes mold spores around. Most Duct Repair jobs in Seminole run $280 – $520 for reconnection and sealing of one to two damaged runs, with full duct-board rehabilitation ranging $650 – $1,200 depending on how many plenums need coating.

Crushed Flex and Disconnected Trunks

Behind the air handler in Seminole’s older ranches, we regularly find flex duct that has collapsed under its own weight after forty years or been crushed by a homeowner who bumped it in the attic. We camera-inspect the full run before we seal anything. Reconnecting one run without checking the rest leaves you with the same pressure loss and the same musty smell in three months.

Duct Board Rehabilitation

Fiberglass duct board in Seminole absorbs Gulf humidity like a sponge. We seal the board with mastic and mesh, then coat with antimicrobial treatment so mold can’t regrow in the pores. This is duct-board rehabilitation, not standard metal-duct cleaning. The equipment is different. The result lasts.

Air Duct Sealing in Seminole

Air Duct Sealing in Seminole is most often the real fix for homeowners who’ve had their ducts cleaned two or three times and still get that sour, wet smell when the compressor starts. The peninsula’s salt-laden air gets into attic ductwork through gaps and seams, then combines with humidity to grow mold inside porous fiberglass board. Cleaning the surface doesn’t seal the pores. Air Duct Sealing with mastic, mesh reinforcement, and antimicrobial coating stops the cycle. Typical Air Duct Sealing in Seminole costs $450 – $890 for a single-system ranch home, with whole-system sealing and coating on larger or more damaged systems reaching $1,100 – $1,600.

Mastic-and-Mesh Sealing Method

We brush mastic, a thick rubberized compound, over every seam and gap in your duct board, then embed fiberglass mesh for reinforcement. Once cured, it’s flexible enough to handle thermal expansion but airtight enough to stop pressure loss. In Seminole’s humidity, we only use mastic rated for wet environments, not tape that peels in six months.

Antimicrobial Coating After Seal

Sealing without coating is half a job here. We apply an EPA-registered antimicrobial to the interior duct board after sealing so mold and mildew can’t establish in the pores. In Seminole’s year-round humidity, this step is what keeps the musty odor from returning.

Trusted Brands We Service in Seminole

Our trucks carry professional-grade equipment from Rotobrush and Nikro, the same rotary brush systems and negative-air machines that commercial crews use on larger jobs. For filtration and sealing products, we stock Honeywell, Aprilaire, Abatement Technologies, and Guardsman materials on every Seminole truck, so we’re not running to a supplier while your attic is open. That means faster turnaround and fewer return visits. When we quote a job, we’re quoting with the actual parts we’ll use, not a placeholder price that changes when the “right” filter turns out to be backordered.

Common Duct Sealing Problems We See in Seminole Homes

• Porous fiberglass duct board that cleaning can’t fix. In Seminole’s 1960s and 1970s ranches, original duct board has absorbed decades of Gulf humidity. The pores hold mold that vacuuming won’t touch. Sealing the surface gaps without coating the board itself just moves the odor to the next leak point within months.
• Crushed flex runs hidden behind air handlers. We find these in Lake Seminole Village and Seminole Grove Estates regularly. A flex duct collapses or gets kicked loose, and the homeowner only notices weak airflow and a musty smell. Camera inspection finds the real damage before we seal anything.
• Disconnected supply trunks blowing attic air into living spaces. Seminole’s summer storms and hurricane-season humidity mean attic air is often saturated. When a supply trunk separates from the main plenum, the system pulls that wet attic air straight into bedrooms. Sealing the reconnection without checking for mold contamination in the trunk leaves spores circulating.
• Standard metal-duct cleaning methods used on duct board. Rotary brushes and high-pressure whipping that work fine on galvanized steel will shred fiberglass duct board. We see this from crews who don’t know Seminole housing stock. The damage opens new lint pathways and makes the odor problem worse.

Pricing for Duct Sealing in Seminole, FL

We Also Serve Cities Near Seminole

Our crews run regular routes through Largo, Dunedin, Pinellas Park, and Clearwater from the same South Florida dispatch. If you’re in Seminole’s neighboring communities and need Duct Sealing in Seminole or surrounding areas, the same written pricing and 365-Day Done Right Promise apply. We don’t charge extra for crossing city limits.

FAQs About Duct Sealing in Seminole