Duct Sealing in Palm Valley - Tested First, Written Price Second

Fast, Reliable Duct Sealing Across Palm Valley

We’re the Duct Sealing crew that serves Palm Valley from our South Florida dispatch office, and we know this coastline. The salt spray coming off the Atlantic, the humidity that hangs in the air from May through October, the way post-2002 homes here were built with sealed, insulated duct chases per Florida’s energy code. These aren’t abstract facts to us. They’re the conditions we plan for every time we load the van for a Palm Valley job. When you call (361) 326-5060, a live person answers, and we’ll get you scheduled with a written price before any work starts.

Call (361) 326-5060

Why Hollis Air Duct Cleaning Is Palm Valley’s Preferred Duct Sealing Company

Hollis Air Duct Cleaning has been part of the Garrison Partners family since 2004. In Palm Valley, that longevity matters because we’ve watched this market change. We remember when the luxury builds near Ponte Vedra started going up with multi-zone systems and flex-duct runs in attic spaces, and we’ve learned how those systems fail differently than rigid ductwork inland.

Our technicians are background-checked and uniformed. They arrive inside the quoted window, price the job in writing before touching anything, and leave the site clean. That’s The Garrison Standard, and it’s how every Hollis location operates, including ours serving Palm Valley.

The 365-Day Done Right Promise covers every repair in writing. If the work fails within a year, we come back and make it right at no charge, including a free second visit. No negotiation, no runaround.

Roy Castellanos leads our operation, and he set the rule we still follow: treat every home like the technician’s own. That means explaining what we’re doing, showing camera footage of what we found, and never selling a service that doesn’t solve the actual problem.

Air Duct Sealing in Palm Valley

Air Duct Sealing in Palm Valley is a different job than it is thirty miles inland, and the difference is salt plus humidity plus sealed duct chases. The salt aerosol that blows off the Atlantic coats HVAC evaporator coils and duct interiors year-round. When that salt mixes with the 75°F-plus dew points of a Palm Valley summer, you get microbial growth inside supply ducts and sticky, gritty dust that homeowners notice after every nor’easter. Sealing the system properly means finding every leak point, not just the ones you can see from a register.

Our process starts with a camera inspection. We look at the flex-duct runs in your attic, the boot connections, the mastic joints at the air handler. Then we seal with mastic and reinforced mesh, maintaining negative pressure with a HEPA-filtered Nikro unit so nothing escapes into your living space during the work. A typical Air Duct Sealing job in Palm Valley runs $450 – $850 for a single-zone system, $750 – $1,400 for multi-zone homes with multiple air handlers.

What Sealing Actually Fixes

Leaky ducts pull unfiltered air from your attic, crawl space, or wall cavities. In Palm Valley, that unfiltered air carries salt, pollen, and humidity straight to your evaporator coil. Sealing the supply and return sides stops that bypass. Your system runs less, your coil stays cleaner longer, and the air coming from your vents matches what the thermostat is calling for.

Why Camera Inspection Comes First

We don’t guess where your leaks are. Our techs run a borescope through the duct runs to find crushed flex sections, separated joints, and gaps at the plenum. In two-story homes with bonus rooms over garages, these are common failure points. We show you the footage before we quote the repair. No surprises, no pressure.

Duct Sealing Services in Palm Valley

Duct Sealing Services in Palm Valley cover the full range of what a coastal HVAC system needs to stay tight: supply-side sealing, return-side sealing, boot and plenum connections, and repair of damaged flex-duct sections. Because nearly all Palm Valley homes built after 2002 use sealed, insulated duct chases with flex runs, we use equipment designed for that specific construction, not the aggressive rotary brushes that work fine on rigid metal duct inland but will crush your inner liner and create new leaks.

Our Duct Sealing Services include negative-air source removal with Nikro HEPA-filtered equipment, coil-safe antimicrobial treatment where microbial growth is present, and mastic sealing with fiberglass mesh at all joints and connections. We do not offer fogging “sanitiser” as a stand-in for source removal. It adds moisture. It leaves chemical film. And on salt-laden coastal ductwork, that film traps more salt and more microbial growth, making the problem worse six months later. A typical Duct Sealing Services appointment in Palm Valley runs $450 – $850 for standard single-family homes, with multi-zone or larger homes up to $1,400.

The Nor’easter Problem

After a February nor’easter pushed salt spray into attic vents, a homeowner in the Sawgrass neighborhood noticed gritty film blowing from the supply registers in a bonus room over the garage. Our tech used a camera inspection to find that the flex-duct run had been crushed at a sharp bend, then sealed the joints and boot connections with mastic and mesh while maintaining negative pressure with a HEPA-filtered unit. The sticky residue in the first few feet of the duct was removed with agitation tools, and the homeowner reported no more salt dust from the vents.

What We Don’t Do

We don’t seal only the visible supply registers while leaving return-side leaks and crushed attic runs unaddressed. We don’t apply aggressive brushes or high-pressure air to insulated flex duct. And we never sell a fogging treatment as a replacement for actual source removal. These shortcuts are common in the trade. They’re also why some Palm Valley homeowners have had to call a second company to fix what the first one made worse.

Trusted Brands We Service in Palm Valley

We stock parts and use equipment from Rotobrush, Nikro, and Abatement Technologies on Palm Valley jobs. The Nikro negative-air machines we run are the same units commercial crews use in hospitals and schools, not the hardware-store vacuums some outfits bring to residential calls. For filtration upgrades after sealing, we carry Honeywell, Aprilaire, and Guardsman products. Having this inventory on the van means we don’t leave your job to chase parts across Jacksonville. Most Palm Valley repairs are completed in a single visit because the right equipment and the right materials are already in the truck.

Common Duct Sealing Problems We See in Palm Valley Homes

• Crushed flex-duct at attic bends. The insulated flex duct used in post-2002 Palm Valley homes gets compressed where installers took tight turns around trusses. The restriction creates turbulence, noise, and temperature loss. We replace the damaged section and support the new run properly.
• Salt-laden dust after coastal storms. Wind-driven salt spray enters attic vents and outdoor returns during nor’easters, leaving a gritty film in the first few feet of supply ducts. Homeowners describe it as “sticky dust.” Sealing the return path and removing the residue with negative-pressure agitation fixes it.
• Return-side leaks pulling attic air. Many companies seal only the supply registers because they’re easy to reach. The return-side leaks in the attic, where your system pulls 75°F-dew-point air through fiberglass insulation, stay open. We seal both sides.
• Fogging residue trapping new growth. Previous “sanitising” treatments left a chemical film inside insulated ductwork. That film now traps salt and moisture, accelerating microbial growth. We remove the residue with source-removal methods before sealing.

Pricing for Duct Sealing in Palm Valley, FL

We Also Serve Cities Near Palm Valley

Our crews work throughout Northeast and South Florida, and we regularly dispatch to Duct Sealing in Palm Valley from our Miami office. We also serve Jacksonville, Miami, Tampa, and Orlando with the same equipment, the same written pricing, and the same 365-Day Done Right Promise.

FAQs About Duct Sealing in Palm Valley