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.
Fast, Reliable Duct Sealing Across Goldenrod
We dispatch our Duct Sealing crews to Goldenrod from our South Florida scheduling office, and most Goldenrod appointments book within a few days. If you live off Aloma Avenue, near the Goldenrod Road corridor, or in the neighborhoods tucked between Semoran Boulevard and the Little Econlockhatchee River, you’re inside our regular service radius. We’ve worked on enough 1970s and 1980s ranch homes here to know what the ductwork looks like before we open the access panel. Call (361) 326-5060 to set up a free estimate.
Why Hollis Air Duct Cleaning Is Goldenrod’s Preferred Duct Sealing Company
We’ve been serving Central Florida since 2004 as part of the Garrison Partners family, and our crews know the difference between a Goldenrod ranch built in 1978 with original fiberboard trunks and a 1995 remodel with updated flex runs. That matters because the fix is different for each.
Our technicians are background-checked, uniformed, and expected to operate under The Garrison Code: arrive inside the quoted window, price the job in writing before touching anything, complete the work by the book, and leave the site clean. Every repair we make in Goldenrod carries our 365-Day Done Right Promise. If the work fails within a year, we come back and make it right at no charge, including a free second visit.
Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops, no callback queues.
HVAC Duct Sealing in Goldenrod
HVAC Duct Sealing in Goldenrod usually starts with a homeowner calling about uneven cooling, musty air, or a utility bill that climbed without explanation. In this market, the typical whole-system duct sealing job runs $850 – $1,800 depending on accessibility, the condition of existing joints, and whether we’re working with original fiberboard or newer flex duct. We price it in writing before any work starts, and that number does not move at the door.
The sealing process itself involves pressurizing the duct system to locate leaks, then sealing accessible joints with mastic and fiberglass mesh (for fiberboard trunks) or replacing damaged flex runs entirely. We use professional-grade equipment from Rotobrush and Abatement Technologies to access and treat systems that residential crews often can’t reach.
What We Find in Older Goldenrod Systems
Goldenrod’s 1970s – 80s ranch homes were built with fiberboard duct trunk lines and flex branch runs, and after 40+ years in Goldenrod’s year-round humidity that fiberboard delaminates at the seams and collapses internally. So a scheduled duct cleaning here frequently turns into a sealing and repair job rather than a cleaning job. The homeowner thinks they’re buying a cleaning; we show them the camera footage and explain why sealing comes first.
Mastic vs. Tape on Fiberboard
Cloth-backed duct tape was never meant to last decades in a hot attic. We remove the failed tape, clean the joint surface, and apply water-based duct mastic reinforced with mesh. Done right, it outlasts the original construction. Done wrong, you’re sealing over rot.
Duct Repair in Goldenrod
Duct Repair in Goldenrod often means replacing crushed flex runs, rebuilding separated fiberboard trunks, or cutting out sections where the inner liner has disintegrated entirely. Typical repairs here range from $280 for a single flex run replacement to $650+ for trunk rebuilds involving multiple joints. We always inspect with a camera first so the homeowner sees exactly what failed and why.
The most common call we get is a room that won’t cool. Half the time in Goldenrod, the duct to that room has been crushed by a storage box in the attic, disconnected at the collar, or never properly sealed in the first place. We find it, fix it, and balance the registers before we leave.
Crushed Runs Behind the Air Handler
We pulled up to a 1978 ranch off Aloma Avenue where the homeowner kept smelling rotten eggs only when the AC kicked on. The sulfur-reducing system on their well was feeding hydrogen sulfide into a return duct that had been re-taped with cloth-backed duct tape sometime in the 1990s. A camera inspection showed two crushed flex runs behind the air handler and a fiberboard trunk that had separated at three joints; we sealed the trunk with mastic and mesh, replaced the crushed runs, and treated the return plenum for the sulfur odor before re-balancing the registers.
When Fiberboard Is Too Far Gone
Sometimes the inner liner of a fiberboard trunk has turned to wet cardboard. Sealing the outside won’t fix it. We section in new duct board or transition to metal, depending on the layout. We explain both options and price each in writing before cutting anything.
Trusted Brands We Service in Goldenrod
We carry parts and filtration products from Aprilaire, Guardsman, and Abatement Technologies on our trucks, which means most Goldenrod repairs don’t wait on a parts run. Our rotary brush systems from Rotobrush and negative-air machines from Nikro are the same tools commercial crews use, not hardware-store gear. For homeowners with whole-house dehumidifiers or air purifiers tied to their duct system, we stock compatible media and can source Honeywell and Aprilaire components with fast turnaround. Everything gets explained in plain terms before we start.
Common Duct Sealing Problems We See in Goldenrod Homes
- Failed original tape on fiberboard seams. Cloth-backed and standard gray duct tape used on fiberboard trunk seams in original 1970s – 80s Goldenrod ranches has dried and released. The joint looks sealed from the outside but leaks at every cycle of the blower motor. We find this on roughly half the older homes we inspect.
- Internal delamination from humidity. Fiberboard duct board in these same homes absorbs Goldenrod’s ambient humidity and delaminates internally, so sealing the exterior joints doesn’t address the collapsed inner liner shedding fibers into supply and return ducts. Camera inspection shows what the eye can’t.
- Sulfur odor trapped by partial sealing. On Goldenrod homes with well-water sulfur-reducing systems, sealing a leaking return without first treating the plenum just traps hydrogen sulfide in a tighter box. The rotten-egg smell returns within weeks because the source wasn’t removed. We treat first, seal second.
- Disconnected flex runs in attic storage zones. Goldenrod’s ranch homes with attic HVAC placements often have flex runs that get kicked, crushed, or pulled loose by homeowners using the attic for storage. The room stops cooling; the duct is hanging open three feet away.
Pricing for Duct Sealing in Goldenrod, FL
A typical whole-system duct sealing in Goldenrod runs $850 – $1,800. Single repairs like a flex run replacement or joint rebuild usually fall between $280 and $650. What moves the number: how much of the system is accessible without cutting drywall, whether we’re working with original fiberboard or newer materials, and whether odor treatment is needed for sulfur contamination from well-water systems.
We don’t quote per-vent teaser prices that balloon once the technician is inside. We inspect with a camera, show you what we found, and write down one flat price per system before any work starts. Estimates are free. Call (361) 326-5060 for an exact quote on your home.
We Also Serve Cities Near Goldenrod
Our crews regularly work Duct Sealing in Goldenrod and the surrounding communities, including Casselberry to the north, Winter Springs and Winter Park to the west, and Maitland just south of Winter Park. Same equipment, same written pricing, same 365-Day Done Right Promise at every stop.
Serving Goldenrod, FL - Our Local Coverage Area
We’re based in the Goldenrod 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 Goldenrod
Because Goldenrod’s 1970s – 80s ranch homes have fiberboard ductwork that delaminates and leaks after decades in humid attics. We start the camera inspection expecting to clean; we find separated joints and crushed runs that make sealing the honest priority. The homeowner sees the footage and understands why cleaning alone would be a waste of money. Call (361) 326-5060 if you’re unsure what your system needs.
Only if the source is addressed first. Many Goldenrod homes on well water have sulfur-reducing systems that introduce hydrogen sulfide into return ducts. Sealing the leak without treating the plenum traps the gas in a tighter space and the smell returns within weeks. We treat the plenum for sulfur residue, then seal the ductwork. Call (361) 326-5060 to schedule an inspection.
We pressurize the system and use a camera on a flexible rod to trace every trunk and branch. In Goldenrod’s original ranches, we often find flex runs that have pulled loose at the collar or been crushed by attic storage. The camera shows the homeowner exactly where the air is going instead of the bedroom. Call (361) 326-5060 to book a camera inspection.
It helps prevent mold from returning by stopping the humid air infiltration that feeds it. Goldenrod’s subtropical climate means year-round humidity, and leaking ducts pull that moisture into cool dark spaces where mold grows. Sealing alone won’t kill existing mold; we may recommend cleaning first, then sealing to keep it from coming back. Call (361) 326-5060 for a specific recommendation on your system.
We use Rotobrush rotary brush systems for access and cleaning prep, Nikro negative-air machines for containment, and Abatement Technologies filtration products for protection during the job. Sealing is done with professional-grade mastic and mesh, not hardware-store tape. We stock Aprilaire and Guardsman components for related filtration work. Call (361) 326-5060 for details on your specific job.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Goldenrod and Central Florida since 2004.




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