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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After
Before
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Before
AfterFast, Reliable Duct Sealing Across Golden Gate
We’re the crew that shows up to Golden Gate homes knowing what we’ll find before we open the attic hatch. Most of this neighborhood was built in the 1970s and 1980s, and those concrete-block ranch houses came with fiberboard trunk lines and flex duct runs that weren’t sealed to today’s standards. Roy Castellanos and our team at Hollis Air Duct Cleaning have worked enough attics off Green Boulevard and around the Golden Gate Estates perimeter to know where the low spots sag, where the humidity pools, and why a quick tape patch won’t hold through another rainy season. If your registers blow weak, your energy bill keeps climbing, or that musty smell returns no matter how many times you’ve had the ducts cleaned, call us at (361) 326-5060. We’ll look at the system, show you what we find, and give you a written price before we touch anything.
Why Hollis Air Duct Cleaning Is Golden Gate’s Preferred Duct Sealing Company
We’ve been doing this since 2004, and the Garrison Standard we work under hasn’t changed: arrive inside the window, price it in writing, do it by the book, leave the site clean. In Golden Gate, that means something specific. We know the difference between a 1978 concrete-block ranch with original flex duct and a 2005 infill with PVC trunk lines, and we don’t quote either job the same way.
Our technicians are background-checked and uniformed. You know who’s walking in before they get there. Phones are answered by a live person 24 hours a day, 7 days a week – no voicemail loops, no callback queues. And every repair we make carries our 365-Day Done Right Promise in writing. If the seal fails or the musty odor returns because of our work, we come back and make it right at no charge, including a free second visit.
Dispatch and scheduling for Golden Gate are coordinated from our Miami office, but the crew that pulls up to your driveway lives and works in this area. They know the local building stock, the permit environment, and the way Collier County humidity behaves in a low-pitch vented attic. That matters when you’re deciding whether to seal a run or replace it.
Air Duct Sealing in Golden Gate
Air Duct Sealing in Golden Gate is usually a correction job, not a maintenance job. The homes here were built with unsealed joints at the plenum, at trunk-line connections, and where flex duct meets metal collars. Decades of heat cycling, rodent traffic, and the weight of condensation in sagging low spots have opened gaps that blower-door testing often reveals as 20 to 30 percent conditioned-air loss. We seal with mastic and reinforced mesh, not tape, because tape peels off fiberboard within one rainy season in this climate.
What We Seal and Why
We start with a camera inspection of the attic runs. In Golden Gate’s older ranch homes, we regularly find disconnected flex behind the air handler, crushed low spots where standing water has compromised the vapor barrier, and plenum seams that have never been sealed. We mark each location, show the homeowner the footage, and quote the repair. No work starts until the price is written down and agreed to.
When Sealing Becomes Replacement
Sometimes the flex duct is too far gone. Rodent-compromised insulation, saturated core material, or multiple crush points mean sealing would trap moisture inside a failed section. We’ll tell you straight if that’s the case. Replacing a flex run costs more upfront, but paying twice for sealing on a duct that should have been replaced is the expensive option.
Duct Sealing Services in Golden Gate
Duct Sealing Services in Golden Gate cover the full range of what a 1970s-to-1980s concrete-block home needs: plenum sealing, trunk-line joint repair, flex-to-collar reconnection, register boot sealing, and post-repair airflow verification. Our crew uses Rotobrush agitation tools under negative-air pressure with HEPA filtration when debris removal is part of the job, and we verify our seal with pressure testing where accessible. The goal isn’t just to stop air from leaking – it’s to stop the moisture and microbial load that leaks draw into the system.
The Garrison Code on Site
Our technicians arrive inside the quoted window, in uniform, with boot covers and drop cloths. They explain what they found, what they’ll do, and what it costs before any work begins. The site gets left clean. That’s not extra – it’s the minimum standard for every Hollis job, written into The Garrison Code that governs how we operate.
Equipment We Bring
For sealing work we use professional-grade mastic, fiberglass mesh reinforcement, and mechanical fasteners where code requires them. When duct cleaning precedes sealing, our Nikro negative-air machines and Rotobrush rotary systems handle the debris removal. For filtration upgrades tied to sealing jobs, we stock Honeywell and Aprilaire components sized for the systems common in Golden Gate’s smaller ranch homes.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Golden Gate
We carry parts and filtration products from Honeywell, Aprilaire, and Abatement Technologies, which means most Golden Gate homeowners don’t wait on a second trip for compatible components. Honeywell media filters and Aprilaire whole-home filtration units pair well with the sealed duct systems we rebuild in these older homes, where the original equipment was often undersized or unfiltered. If your sealing job reveals that the return path is pulling unfiltered attic air, we can quote an upgrade on the spot and install it the same visit if you approve the written price.
Common Duct Sealing Problems We See in Golden Gate Homes
- Sagging flex duct in low-pitch attics. Golden Gate’s ranch homes were built with shallow roof pitches and long flex runs that droop between trusses. Those low spots collect condensation from the humid air, and the weight crushes the duct flat. Sealing the joints without addressing the sag just traps moisture in the damaged section.
- Tape failure on fiberboard trunk lines. The original builders used foil tape on fiberboard plenums and trunks. After forty years of humidity cycling in a Collier County attic, that adhesive has turned to dust. We remove the residue and seal with mastic and mesh, which flexes with the material and holds through wet seasons.
- Disconnected flex runs behind the air handler. Vibration from the blower unit works metal collars loose, and in Golden Gate’s sandy soil conditions, minor foundation settling can shift the air handler enough to pull flex duct off its connection. We reconnect with mechanical fasteners, then seal and support the run to prevent recurrence.
- Rodent-compromised duct with attempted DIY sealing. Homeowners sometimes find chewed flex and seal it from the outside with tape or spray foam. That covers the hole but traps droppings, nesting material, and moisture inside the duct. We remove the contaminated section, replace it, and seal the new connection properly.
Pricing for Duct Sealing in Golden Gate, FL
A typical duct sealing job in Golden Gate runs $450 to $1,200 for a single-system home, depending on how many runs need attention and whether we’re sealing existing intact duct or replacing compromised flex first. Simple plenum and trunk-line sealing on a system that’s otherwise sound sits at the lower end. Jobs requiring multiple flex-run replacements, register boot sealing, and post-repair pressure testing run higher. We don’t price by the vent or quote teaser rates that balloon once we’re in the attic. The price is written down before work starts, and it doesn’t move at the door. Estimates are free. Call (361) 326-5060 and we’ll schedule a look.
We Also Serve Cities Near Golden Gate
Hollis Air Duct Cleaning dispatches crews throughout South Florida and beyond. If you’re outside Golden Gate, we also provide Duct Sealing in Golden Gate and surrounding areas including Jacksonville, Miami, Tampa, and Orlando. Each location operates under The Garrison Standard with the same written pricing and 365-Day Done Right Promise.
Serving Golden Gate, FL - Our Local Coverage Area
We’re based in the Golden Gate 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 Golden Gate
The musty odor returns because cleaning alone doesn’t fix the moisture source. In Golden Gate’s 1970s ranch homes, crushed flex duct in low attic spots traps standing condensation from our 150+ inches of annual rain, and unsealed joints pull humid attic air into the system. We pulled up to a 1978 concrete-block ranch off Green Boulevard where the homeowner had paid twice for duct cleaning and still got a musty smell within weeks – our camera inspection found a disconnected flex run behind the air handler and standing moisture in a crushed low spot near the supply trunk. Using Rotobrush agitation tools under negative pressure with HEPA filtration, we removed the source debris, reconnected and sealed the run with mastic and mesh, then verified airflow at the farthest registers. The musty odor didn’t return that season. Call (361) 326-5060 if you’re seeing the same pattern.
Duct sealing stops the moisture intrusion that feeds mold, but it doesn’t kill existing growth. If your attic flex or fiberboard trunk has active mold, we typically recommend removing the contaminated material, replacing it, and sealing the new connections. Sealing over mold just traps spores inside the duct where they continue to circulate. We’ll show you what the camera sees and quote both options in writing.
Yes, especially in Golden Gate’s heavily tenanted market where pre-lease duct sanitation is common. A 1970s concrete-block ranch with original unsealed ductwork will leak 20 to 30 percent of conditioned air into the attic, which tenants notice in high electric bills and weak airflow. Sealing before move-in protects your HVAC equipment, reduces callback complaints, and gives you documentation of the unit’s condition. We can schedule around tenant turnover and provide written proof of work for your records.
We run a camera through every accessible run and look for three things: structural integrity of the flex core, condition of the vapor barrier insulation, and evidence of standing moisture or rodent damage. If the core is intact and the damage is limited to disconnected collars or minor seam gaps, sealing is the right fix. If the flex is crushed, saturated, or chewed through, replacement saves you from paying for sealing twice. We show you the footage and explain which category your system falls into before quoting.
The rainy season tests every seal we make, which is why we don’t use tape on fiberboard or in humid attics. Mastic and mesh, properly applied, flexes with temperature and humidity cycling and holds through June-to-October downpours. What fails is sealing over a crushed low spot or disconnected run – the standing moisture finds its way in regardless of how good the seal is. That’s why our camera inspection is non-negotiable on every Golden Gate job. Call (361) 326-5060 to schedule yours.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Golden Gate and the surrounding communities.