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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Before
AfterFast, Reliable Duct Sealing Across Cooper City
We dispatch our Duct Sealing crews to Cooper City from our Miami office, and we know the drive down Griffin Road or Stirling Road well enough to hit our arrival windows. If you’re in Rock Creek, Country Club, or anywhere off Hiatus Road, we’ve already worked on your floor plan. Cooper City’s homes were built from a handful of developer templates, so when you call us at (361) 326-5060, we don’t need a map to know where your air handler sits or where your flex duct runs are likely sagging.
Our technicians arrive uniformed, background-checked, and on time. The price is written down before any work starts. That’s The Garrison Standard, and it’s how we’ve operated since 2004.
Why Hollis Air Duct Cleaning Is Cooper City’s Preferred Duct Sealing Company
We’ve earned our reputation in Cooper City by showing up and doing what we said we’d do. Not every contractor can say that in western Broward.
Our crews know the specific failures that hit Cooper City’s housing stock: original flex duct from the 1970s through 1990s that rodents have chewed, storm water that’s soaked attic insulation through ridge vents, and mastic that’s turned brittle after decades of 90-degree attic heat. We don’t guess. We camera-inspect first, then seal with the right material for the condition we find.
Calls are answered by a live person, 24 hours a day, 7 days a week. No voicemail loops. No waiting until Monday for a callback. When you schedule Duct Sealing in Cooper City, you get a written arrival window and a written price, both honored.
Every repair is backed by our 365-Day Done Right Promise. If the seal fails within a year, we return and make it right at no charge, including a free second visit. That’s in writing on every job, not a verbal maybe.
Air Duct Sealing in Cooper City
Air Duct Sealing in Cooper City is usually less about sealing new ductwork and more about reconnecting and restoring original systems that have spent 30-plus years in near-constant AC operation. Because this city was master-planned and built out almost entirely between the late 1960s and 1990s, nearly every home’s duct system is original galvanized or flex duct. Year-round humidity of 70-90% RH and nonstop cooling means the real enemy is mold, loose joints, and collapsed flex runs, not ordinary dust accumulation.
A typical whole-system duct sealing job in Cooper City runs $850 – $1,800, depending on accessibility, the extent of damage, and whether we need to replace sections of flex duct or just seal existing joints. We give you that number in writing before we start. No per-vent pricing, no add-ons at the door.
Camera Inspection Before Sealing
We run a borescope through your supply and return lines before we quote. In Cooper City’s older homes, we regularly find disconnected boots behind drywall, rodent-chewed flex at the plenum, and water-stained insulation from tropical system blow-by. Seeing the actual condition lets us price accurately and seal permanently, not patch temporarily.
Mastic, Tape, or Replacement
Original galvanized duct gets sealed with UL-181 mastic. Brittle flex duct gets replaced with new insulated flex, then sealed. We don’t tape over rodent damage and call it done. The Garrison Code requires we fix what we find, explain it plainly, and leave the site clean.
Duct Sealing Services in Cooper City
Duct Sealing Services in Cooper City cover the full restoration of your home’s air distribution system, from the air handler cabinet in your garage or closet to every supply and return boot. Because Cooper City’s CBS homes on quarter-acre lots typically have air handlers in the garage or an interior closet, we seal the cabinet itself, the plenum connections, and all trunk and branch lines. A sealed system stops pulling 130-degree attic air into your living space and stops pushing conditioned air into spaces you don’t occupy.
Most Cooper City homeowners notice the problem first as uneven cooling, a musty smell after storms, or electric bills that spike June through September when the system runs hardest. Duct Sealing Services address all three by restoring pressure balance and stopping unconditioned air infiltration.
Air Handler Cabinet Sealing
The cabinet that houses your blower and coil is often the leakiest part of the system. We seal the panels, the filter rack, and the plenum connection with foil tape and mastic rated for the temperature swing. In Cooper City’s humid climate, an unsealed cabinet pulls attic moisture directly onto the coil, accelerating mold growth and rust.
Supply and Return Boot Reconnection
Flex duct disconnects from boots over time, especially where attic temperatures swing daily and mastic dries out. We reconnect with mechanical supports, then seal with mastic. No duct tape. Duct tape fails in Florida attics within a season; we see the evidence on every callback where someone else used it.
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 Cooper City
We carry professional-grade equipment and materials on every van: Nikro negative-air machines for controlled containment during sealing work, Honeywell and Aprilaire filtration components for replacement when we find compromised filters, and Abatement Technologies HEPA filtration for jobs where mold or particulate is present. We stock the right flex duct, mastic, and mechanical fasteners for Cooper City’s original galvanized and flex systems, so we’re not making a supply run while your system is open. That means faster turnaround and a finished job in one visit for most homes in Rock Creek, Country Club, and the surrounding Cooper City neighborhoods.
Common Duct Sealing Problems We See in Cooper City Homes
- Storm-soaked flex duct after tropical systems. Afternoon thunderstorms and tropical weather common to western Broward push water through attic vents and ridge caps. We regularly find water-stained or moldy insulation on original flex runs, especially in the Country Club and Rock Creek subdivisions where the same developer floor plans repeat across hundreds of homes.
- Rodent-chewed insulation at supply boots. Original flex duct from the 1970s through 1990s becomes brittle and attractive to rodents in hot attics. The damage is usually at the boot connection, where the flex meets the ceiling. Mastic or tape over chewed insulation fails within a season; we replace the damaged section and seal properly.
- Disconnected fittings in original galvanized trunk lines. Galvanized duct from Cooper City’s early build-out separates at joints after decades of vibration and thermal expansion. We reseat and seal with mastic, then support to prevent recurrence. Without support, the vibration from the blower motor reopens the joint.
- Negative pressure pulling unconditioned attic air. Sealing duct leaks without addressing the air handler and blower motor means dirty coils and condensate keep the system under negative pressure. We seal the cabinet and check blower alignment as part of the job, not as an upsell.
Pricing for Duct Sealing in Cooper City, FL
A typical whole-system duct sealing in Cooper City runs $850 – $1,800. Smaller partial seals, such as reconnecting a single disconnected branch line or sealing the air handler cabinet only, fall in the $350 – $650 range. What moves the price: accessibility of your attic, the extent of damaged flex that needs replacement versus sealing only, and whether we need to set up containment for mold-affected areas.
We do not quote per-vent. We do not offer teaser coupons that balloon once the van is in your driveway. We inspect, we write the price, and that price does not move. Before-and-after photos of your own ducts are included. Call (361) 326-5060 for a free estimate.
We Also Serve Cities Near Cooper City
Our crews regularly work in Jacksonville, Miami, Tampa, and Orlando, with dispatch and scheduling coordinated from our Miami office. Each Hollis location is independently owned and operated under The Garrison Standard, so the crew that arrives in Cooper City knows Cooper City’s homes, not a generic manual.
Serving Cooper City, FL - Our Local Coverage Area
We’re based in the Cooper City 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 Cooper City
Original duct systems in Cooper City’s 1970s-1990s housing stock should be inspected every 3-5 years and sealed when leaks are found, not on a fixed calendar. The combination of year-round AC use, 70-90% humidity, and attic temperature swings degrades seals faster than in climates with shorter cooling seasons. Call (361) 326-5060 and we’ll camera-inspect to tell you where your system stands.
The smell is usually mold in water-soaked flex duct insulation, not surface dust. Cooper City’s tropical storms push moisture through ridge vents that soaks original duct insulation; cleaning the interior surface doesn’t reach the mold inside the insulation jacket. We replace water-damaged flex sections and seal with fresh mastic to stop the odor source, not mask it.
Yes, typically by 15-30% when duct leakage is significant. In Cooper City, where cooling runs nearly year-round and peaks June through September, every cubic foot of 130-degree attic air pulled into your system is a cubic foot your AC paid to cool twice. Sealing stops that waste. The payback period is usually 2-3 cooling seasons.
We inspect with a camera, reseat separated joints with mechanical support, seal all joints and seams with UL-181 mastic, and seal the air handler cabinet and plenum connections. Original galvanized in Cooper City’s homes often has multiple small leaks at joints rather than single large breaches; we find and seal each one. The job takes 4-6 hours for a typical 3/2 or 4/2 ranch.
Sometimes, if the damage is directly from a named storm or sudden water intrusion and you have documentation. We provide before-and-after photos, written scope of work, and itemized invoices that most Cooper City insurers accept. We do not handle claims directly; we document the work so you can present it. Call (361) 326-5060 and we’ll explain what we can provide for your adjuster.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Cooper City since 2004.