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 Sunset
We dispatch to Sunset from our Miami office, and most days we’re on-site in the neighborhood within a few hours of your call. If you’re smelling musty air after last night’s rain, or your utility bill has climbed without explanation, there’s a fair chance your ductwork has compromised seals. Call (361) 326-5060 and we’ll get a technician out to inspect it. Our Duct Sealing crew knows the local housing stock here, from the 1970s ranch homes off Sunset Drive to the coral rock places in the older sections near the water.
Why Hollis Air Duct Cleaning Is Sunset’s Preferred Duct Sealing Company
We’ve been handling air duct work in South Florida since 2004, and our crew has seen what Sunset’s climate does to ductwork over time. The heavy tree canopy, the humidity that hangs in the air from June through October, the salt-laden breeze if you’re east of US-1, these aren’t abstract weather facts. They’re the conditions that determine whether your duct seals last five years or fail in five months. Homeowners in Sunset call us back because we show up inside the quoted window, price the job in writing before touching anything, and leave the site clean. That’s The Garrison Standard. Every repair we make carries our 365-Day Done Right Promise. If it fails within a year, we return and make it right at no charge, including a free second visit. No negotiation, no runaround.
Our technicians are background-checked and uniformed. You know who’s walking into your home before they arrive. And when you call (361) 326-5060, a live person answers the phone, 24 hours a day, seven days a week. No voicemail loops, no callback queues, no waiting until Monday for a scheduling question.
HVAC Duct Sealing in Sunset
HVAC Duct Sealing in Sunset is rarely a simple matter of running tape around a joint. Because of the area’s extreme summer humidity and heavy tree canopy, we often find that what starts as a minor leak has accelerated into something more serious. Mold and mildew grow fast here. The job involves pressurizing the system to locate leaks, removing compromised tape and mastic, cleaning the joint surfaces, and applying new sealant rated for high-humidity environments. For a typical single-family home in Sunset, you’re looking at $450 to $850 for accessible ductwork sealing. If we need to access sealed chases or replace deteriorated flex sections, costs can run $1,200 to $2,400.
When Sealing Is the Right Fix
Sealing works when the duct material itself is sound and the leaks are at joints, seams, or connections. In Sunset’s mid-century homes with original galvanized trunk lines, we often find the metal is intact but the original tape has dried and peeled. That’s a sealing job.
When Sealing Covers Up a Bigger Problem
Here’s where we earn our fee. If your ducts smell musty after rain, sealing over wet insulation traps mold inside. We use thermal imaging and moisture meters to document what’s actually happening before we quote any work. That documentation matters for your insurer.
Duct Repair in Sunset
Duct Repair in Sunset frequently means replacing sections that sealing alone cannot save. The local housing stock includes plenty of original ductwork from the 1970s and 1980s with deteriorated insulation, and some historic coral rock homes where duct routing presents real challenges. Repair involves cutting out damaged sections, fabricating replacement pieces, and integrating them with the existing system. Typical duct repair in Sunset runs $650 to $1,500 for section replacement in accessible areas. Complex routing through finished spaces or structural modifications can push that to $2,000 to $3,500.
Post-Storm Damage Assessment
After water intrusion, we document everything. Camera inspection, moisture readings, thermal images. This gives you evidence for your insurance claim and gives us a clear picture of what needs replacing versus what can be sealed.
Coral Rock and Historic Construction
Older Sunset homes built with coral rock have thick walls and unconventional framing. We route flexible duct or fabricate custom fittings to work with existing chases rather than cutting into structural masonry.
Trusted Brands We Service in Sunset
We stock parts and materials from Honeywell, Aprilaire, and Abatement Technologies for our Sunset customers, which means faster turnaround on repairs that require filtration upgrades or antimicrobial treatments. Our sealing mastics and foil tapes are commercial-grade, rated for the salt-air and high-humidity conditions that destroy hardware-store products. When we seal your ducts, we’re not using what was cheapest at the supply house. We’re using what holds up in Sunset’s actual environment.
Common Duct Sealing Problems We See in Sunset Homes
- Roof leak water intrusion misread as dust buildup. A homeowner calls about musty air, assumes it’s dirty ducts. We find saturated return duct insulation from a roof leak that started three storms ago. Sealing over this traps mold. We document the moisture, replace the wet section, then seal.
- Coastal salt air corrodes standard foil tape and mastic. Homes east of US-1 or near Sunset Harbor see aluminum tape fail within months. The salt-laden humidity eats the adhesive. We use marine-rated mastic and reinforced tape designed for corrosive environments.
- 1970s flex duct with hidden pinhole leaks. The outer jacket looks intact, but the inner liner is perforated. Sealing the jacket does nothing. We pressure-test to find these, then replace the compromised sections before sealing the new connections.
- Improper drainage from air handlers promoting biological growth. Sunset’s humidity means condensate pans and drain lines work overtime. When they back up, moisture enters the duct system. We clear drains, treat affected areas, and seal only after confirming the source is fixed.
Pricing for Duct Sealing in Sunset, FL
A typical HVAC duct sealing job in Sunset runs $450 to $850 for accessible residential systems. Duct repair with section replacement runs $650 to $1,500. Complex jobs involving coral rock homes, sealed chases, or post-storm replacement with insurance documentation range from $1,200 to $3,500. What moves the number: accessibility of the ductwork, extent of moisture damage, whether sections need replacement before sealing, and whether we’re documenting for an insurance claim. We give you a written price before any work starts. That price does not move at the door. Call (361) 326-5060 for a free estimate. We’ll inspect your system, show you what we found, and quote the exact cost to fix it.
We Also Serve Cities Near Sunset
Our Duct Sealing in Sunset crew is based in South Florida and also handles jobs in Jacksonville, Miami, Tampa, and Orlando. Each location operates independently under The Garrison Standard, with the same written pricing, background-checked technicians, and 365-Day Done Right Promise.
Serving Sunset, FL - Our Local Coverage Area
We’re based in the Sunset 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 Sunset
They need inspection first. We use thermal imaging and moisture meters to determine if the insulation is wet or moldy. If it’s surface contamination on sound material, we clean, treat, and seal. If the insulation is saturated or mold has penetrated the liner, we replace the section and seal the new connections. Call (361) 326-5060 and we’ll diagnose it properly.
Sunset’s combination of salt-laden coastal air and extreme humidity accelerates corrosion of standard foil tape and mastic. The salt particles are hygroscopic, they attract moisture, which keeps the sealant damp and breaks down the adhesive bond. We use marine-rated products specifically for this environment.
Usually yes. Coral rock homes often have existing chases or accessible attic spaces where we can reach ductwork. When we can’t, we fabricate custom flexible duct runs that navigate around structural elements with minimal intrusion. We’ll show you the routing plan in writing before cutting anything.
We spend more time on moisture verification. Every job gets thermal imaging and humidity readings before we seal. If we find active water intrusion, we stop, document, and address the source. Sealing over wet ducts during rainy season is a guaranteed callback, and we don’t do callbacks for our own mistakes.
We use Abatement Technologies negative-air machines during repair work to contain contaminants, and we apply antimicrobial treatments from our Honeywell and Aprilaire product lines where biological growth is present. The equipment matters because mold in Sunset’s climate returns fast if you don’t remove it completely and treat the surfaces before sealing.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Sunset and South Florida since 2004.