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.
Before
After
Before
After
Before
AfterFast, Reliable Duct Sealing Across Greenacres
We’re the crew that shows up to Greenacres homes when the AC smells like wet cardboard after a summer storm and the utility bill keeps climbing even though the thermostat hasn’t moved. Our Duct Sealing team dispatches from our Miami office and serves Greenacres directly – no call centers, no third-party dispatchers, just our own trucks and our own technicians who know the difference between a 1980s ranch off Lake Worth Road and a low-rise condo near the Lake Osborne canal edge. Call (361) 326-5060 and a live person answers, 24 hours a day. We’ll give you a written price before we touch anything, and every seal is covered by our 365-Day Done Right Promise.
Why Hollis Air Duct Cleaning Is Greenacres’s Preferred Duct Sealing Company
We’ve been part of the Garrison Partners family since 2004, and our reputation in Greenacres is built on showing up inside the window we promised and leaving the site clean. Homeowners here aren’t looking for the cheapest coupon in the mail – they’re looking for a crew that won’t renegotiate the price at the door or disappear when the musty smell comes back.
Our technicians are background-checked and uniformed, and we send the same equipment to Greenacres that commercial crews use on larger jobs: Rotobrush rotary systems, Nikro negative-air machines, and sealing products from Guardsman and Abatement Technologies. The price is written down before any work starts, and if a seal fails within a year, we come back at no charge. That’s not a slogan – it’s in writing on every job.
We know Greenacres’s housing stock because we’ve worked in it. The 1980s ranch with flex duct baking in the attic, the condo with stacked ducts and a finicky HOA, the home near a canal where humidity never really drops – these aren’t hypotheticals to us. They’re the jobs we did last week.
Air Duct Sealing in Greenacres
Air Duct Sealing in Greenacres means closing the gaps, cracks, and disconnected joints in your duct system so conditioned air reaches your rooms instead of leaking into your attic or crawl space. In Greenacres’s climate, this work is judged by one thing: can the sealed system hold static pressure against near-continuous AC runtime in 90-degree humidity? Most of our calls come from homeowners whose ducts were sized for original lower-SEER equipment and now leak into a hot, humid buffer space year-round.
A typical whole-house duct sealing job in Greenacres runs $850 – $1,800 depending on system size, attic accessibility, and whether we’re working with original 1980s-90s flex duct or newer hard-pipe runs. Condo and townhome systems with shared or stacked ducts fall in the $650 – $1,400 range because access planning takes more coordination. Every estimate is free, and the price we write down is the price you pay.
Attic Flex-Duct Sealing
Most Greenacres ranch homes have flex-duct runs strung through attic spaces that hit 120 degrees in July. The insulation sleeve cracks, the inner liner tears at bends, and the tape dries out. We inspect with a camera, seal intact runs with Guardsman mastic, and flag any crushed or kinked sections that need replacement rather than sealing.
Return-Duct Leak Repair
Return leaks are the hidden problem in humid climates. When your return duct pulls air from a hot attic instead of your living space, it drags in pollen, humidity, and that musty wet-cardboard smell. We pressure-test the return side, seal every joint, and verify the repair with before-and-after static-pressure readings.
Duct Sealing Services in Greenacres
Duct Sealing Services in Greenacres cover more than slapping tape on a joint. We pressure-test the full system, identify supply and return leaks, seal accessible joints with mastic or mechanical fasteners, and rebalance airflow when the original duct sizing doesn’t match your current equipment. In Greenacres’s 1980s-2000s housing stock, we regularly find ductwork sized for 8-SEER units now paired with 14- or 16-SEER condensers – sealing without rebalancing can starve the blower and raise your electric bill instead of lowering it.
Our Duct Sealing Services include full-system inspection, leak location with smoke pencil and pressure testing, mastic sealing of all accessible joints, register rebalancing, and post-repair airflow verification. For a typical single-family home in Greenacres, expect $850 – $1,800. Condos and townhomes run $650 – $1,400. We don’t quote per-vent pricing because it’s a bait-and-switch tactic – we price per system, in writing, before we start.
Mastic Application and Joint Sealing
Mastic is a water-based sealant that stays flexible and bonds to metal, flex duct, and insulation. We brush it on every joint, collar, and connection point, then let it cure before pressurizing the system. In Greenacres’s humidity, we never seal over damp ductwork – trapping moisture inside creates a mold problem worse than the leak.
System Rebalancing After Sealing
Sealing raises static pressure. On older Greenacres systems, that can mean less airflow at distant registers. We measure airflow at every vent before and after, then adjust dampers or recommend register upgrades so your bedrooms get the same CFM as your living room.
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 Greenacres
We carry sealing and filtration products from Guardsman, Abatement Technologies, and Aprilaire – the same brands commercial HVAC crews spec for hospitals and schools, not the hardware-store tape that peels off in a Florida attic. For Greenacres customers, this means we don’t order parts from a warehouse three counties away and make you wait. Our trucks stock Guardsman mastic, Abatement HEPA filtration media, and Aprilaire pressure-testing gear so most jobs start and finish in one visit. When we do need to special-order for an unusual system, our Miami office coordinates directly with regional distributors and tracks the shipment so we’re not guessing when it’ll arrive.
Common Duct Sealing Problems We See in Greenacres Homes
- Condensation inside attic flex duct after summer storms. Greenacres’s humidity and near-constant AC runtime create a temperature differential between cool supply air and a 110-degree attic. When the outer insulation sleeve is cracked, condensation forms on the inner liner and breeds mold. Sealing without fixing the insulation envelope just traps the moisture.
- Disconnected or crushed flex runs in 1980s ranch attics. Original installers ran flex duct over trusses and around water heaters. Decades of foot traffic, rat activity, and heat degradation have collapsed sections that look sealed from the outside but are blowing conditioned air into the attic.
- Shared condo duct systems with access restrictions. Low-rise complexes near Lake Osborne and along major corridors often have stacked or shared return plenums. One unit’s leak pulls neighbor’s air, odors, and humidity. Sealing requires building coordination and sometimes HOA approval – we plan the access, document the work, and warranty only the sections we can physically reach and test.
- Sizing mismatch on original 1980s-90s ductwork. Older Greenacres homes were ducted for lower airflow rates. Modern higher-SEER equipment moves more air per ton. Sealing the leaks without adjusting register dampers or adding return capacity can overwork the blower motor and void equipment warranties.
Pricing for Duct Sealing in Greenacres, FL
Whole-house duct sealing in Greenacres typically runs $850 – $1,800 for a single-family home, and $650 – $1,400 for a condo or townhome with shared duct access. What moves you within that range: how many linear feet of duct we can access, whether we’re sealing original 1980s flex duct or newer hard pipe, and whether the job requires rebalancing after sealing to protect your blower motor.
We don’t do per-vent pricing. We don’t do teaser coupons that jump at the door. We inspect your system, write one flat price per system, and that’s what you pay. Every estimate is free. Call (361) 326-5060 to schedule.
| Service | Greenacres Price Range |
|---|---|
| Single-family whole-house duct sealing | $850 – $1,800 |
| Condo/townhome duct sealing | $650 – $1,400 |
| Return-duct leak repair (partial system) | $400 – $750 |
| Post-sealing airflow rebalancing | $150 – $300 (if needed) |
Every job includes written pricing before work starts, before-and-after pressure testing, and our 365-Day Done Right Promise. If a seal fails within a year, we return and make it right at no charge.
We Also Serve Cities Near Greenacres
Our crews work throughout Palm Beach County, including Duct Sealing in Greenacres and surrounding areas: West Palm Beach, Wellington, Boynton Beach, and Palm Beach. Same standards, same written pricing, same 365-Day Done Right Promise at every stop.
Serving Greenacres, FL - Our Local Coverage Area
We’re based in the Greenacres 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 Greenacres
Every 3 to 5 years for sealing inspection, and every 2 to 3 years for full cleaning if you’re near open water or unpaved roads where pollen and dust loading are higher. The humidity near canals accelerates duct deterioration, so we check seals more frequently than drier inland markets. Call (361) 326-5060 for a free inspection and we’ll tell you where your system stands.
Your return duct is likely pulling humid attic air through a leak, and the moisture is condensing on cool duct surfaces where mold and mildew grow. We see this constantly in Greenacres homes near Lake Osborne and along canal edges – the smell hits when the blower pressurizes the system after a storm. Camera inspection finds the leak, sealing stops the humid air intrusion, and the odor disappears. Call (361) 326-5060 and we’ll pinpoint it.
Yes, significantly. Sealing return ducts prevents unfiltered outdoor air – including pollen from canal vegetation and open lots – from bypassing your filter and entering your living space. In Greenacres’s long pollen season, a sealed return is often more effective than upgrading to a higher-MERV filter on a leaky system. We verify the improvement with pressure testing after we seal.
Yes, but it requires access planning and sometimes building coordination. We can only seal and warranty the sections we can physically reach and test – typically the unit’s branch ducts and individual return. Shared plenums may need HOA approval for access to common areas. We document everything in writing and coordinate with property management when needed. Call (361) 326-5060 to discuss your specific building.
It can if sealing is done without rebalancing. Original 1980s ductwork was sized for lower airflow rates than modern equipment demands. Sealing leaks raises static pressure, which can reduce airflow at distant registers and strain your blower motor. We measure airflow before and after sealing, adjust dampers as needed, and never seal a system we can’t verify is safe for your equipment. The written price includes this rebalancing when required.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Greenacres and Palm Beach County since 2004.