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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AfterFast, Reliable Duct Sealing Across Hialeah Gardens
Most Hialeah Gardens homeowners with ducts leaking into the attic or pulling in outdoor dust pay $280 – $520 for professional duct sealing, and our crew can usually inspect and price the job same-week. We’re the Hialeah Gardens arm of Hollis Air Duct Cleaning, dispatching from our Miami office with technicians who know the difference between a post-Andrew sealed system and the original 1970s fiberboard still running in ranch homes off West 68th Street. Call (361) 326-5060 for a free estimate.
Why Hollis Air Duct Cleaning Is Hialeah Gardens’s Preferred Duct Sealing Company
We’ve been sealing ducts in South Florida since 2004, and our Duct Sealing team has handled enough Hialeah Gardens jobs to know the local failure patterns by heart. The Garrison Standard means we arrive inside the quoted window, price the work in writing before touching anything, and leave the site clean.
Our technicians are background-checked and uniformed. You know who’s walking in before they knock. The 365-Day Done Right Promise covers every seal: if it fails within a year, we return and make it right at no charge, including a free second visit. No negotiation, no runaround.
Phones are answered by a live person 24 hours a day. No voicemail loops, no callback queues, no waiting until Monday for a scheduling question.
HVAC Duct Sealing in Hialeah Gardens
HVAC Duct Sealing in Hialeah Gardens is less about reconnecting loose pipes in newer construction and more about re-sealing original flex and fiberboard duct that has sagged, torn, or pulled apart under decades of year-round AC use. The post-1992 Hurricane Andrew building codes required airtight ductwork in most new builds, so if your home dates from 1993 onward, the leaks are usually at joints, takeoffs, or where flex duct has degraded in the attic heat. Older ranch homes near the NW 79th Avenue industrial belt are a different story: their original fiberboard trunks often have gaps pulling in dust from gravel driveways and diesel soot from truck traffic.
A typical residential HVAC duct sealing job in Hialeah Gardens runs $280 – $520 for a single system, depending on accessibility and how much of the duct network needs attention. Commercial systems along the Palmetto Expressway warehouse corridor start around $680.
What We Seal and Why It Matters
We seal supply trunks, return plenums, flex duct connections, and register boots. Every gap we close sends more conditioned air into your rooms and less into the attic or crawlspace. In Hialeah Gardens, where AC runs 10 – 12 months a year, that efficiency adds up fast.
Camera Inspection Before We Seal
We run a scope first. On a ranch home off West 68th Street near the Palmetto Expressway, our tech found original fiberboard duct in the attic that had sagged and torn at the trunk takeoff, pulling in dust from the owner’s gravel driveway with every AC cycle. We ran a camera inspection, used agitation tools under negative pressure with HEPA filtration, then sealed the trunk and takeoff with mastic and mesh before rebalancing the air handler. Static pressure dropped noticeably and the return-side dust loading ended.
Duct Repair in Hialeah Gardens
Duct Repair in Hialeah Gardens often means replacing collapsed flex duct, patching holes in fiberboard trunks, or addressing water damage in slab-on-grade runs where high water tables leave standing water after heavy rains. The tropical monsoon climate here means ducts are rarely dry for long, and saturated insulation fails quickly once mold takes hold. We don’t seal over wet material; we dry or replace it first, then seal.
Typical duct repair in Hialeah Gardens ranges from $180 for a localized flex duct replacement to $640 for more extensive trunk repair or moisture remediation in slab-level runs. Jobs requiring coil cleaning or full system sanitizing alongside the repair run higher.
Slab-Level Moisture Problems
In many older Hialeah Gardens homes, slab-on-grade construction puts duct runs beneath the concrete or in cramped attic spaces. After heavy rains, we regularly find standing water or saturated insulation. Sealing over that wet material guarantees failure within a season. We extract the moisture, replace damaged sections, then seal.
When Repair Beats Replacement
Original fiberboard in a 1980s ranch home can often be patched and resealed for less than full replacement. We price both options in writing so you can decide. No pressure, no moving targets.
Trusted Brands We Service in Hialeah Gardens
Our equipment roster includes Rotobrush rotary brush systems for agitation cleaning, Nikro negative-air machines for controlled debris extraction, and filtration products from Abatement Technologies and Guardsman. We stock common flex duct, mastic, mesh tape, and register boots locally, so most Hialeah Gardens repairs don’t wait on parts. When we seal a system, we use the same materials commercial crews specify: rated mastic that flexes without cracking, fiberglass mesh for structural reinforcement, and metal-backed tape at high-stress joints. No hardware-store shortcuts.
Common Duct Sealing Problems We See in Hialeah Gardens Homes
- Sagging flex duct in attics. South Florida’s attic heat hardens the wire helix in original flex duct until it collapses or tears at the takeoff. We replace the damaged section, support it properly, then seal the connection with mastic and mesh.
- Return-side leaks pulling in warehouse-belt dust. Older homes near NW 79th Avenue often have return duct gaps in the garage or crawlspace. Every AC cycle draws in diesel soot and unpaved-road dust. We locate these with a smoke pencil or camera, then seal and filter.
- Waterlogged slab-level duct. High water tables and heavy rains leave standing water in sub-slab fiberboard or flex. Sealing over this material traps moisture and guarantees mold. We pump, dry, replace damaged sections, then seal.
- Biological growth in “sealed” new construction. Post-Andrew homes meet code for airtightness, but year-round AC without coil cleaning breeds mold inside the sealed system. The leak isn’t in the duct; it’s in the maintenance schedule. We clean, sanitize, then verify seal integrity.
Pricing for Duct Sealing in Hialeah Gardens, FL
Duct sealing in Hialeah Gardens typically runs $280 – $520 for residential HVAC systems and $680 – $1,200 for commercial setups in the warehouse district. What moves the price: accessibility (attic vs. slab-level), how much duct needs attention (spot repair vs. full network), and whether we find moisture damage requiring remediation first. We give you one flat price per system, agreed in writing before any work starts. No per-vent pricing, no add-ons at the door. Call (361) 326-5060 for a free estimate; we’ll inspect, scope if needed, and hand you a written number you can count on.
We Also Serve Cities Near Hialeah Gardens
Hollis Air Duct Cleaning dispatches crews throughout South Florida and beyond. We regularly handle duct sealing and repair in Hialeah Gardens as well as Jacksonville, Miami, Tampa, and Orlando. Each location operates independently under The Garrison Standard.
Serving Hialeah Gardens, FL - Our Local Coverage Area
We’re based in the Hialeah Gardens 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 Hialeah Gardens
No. The post-Andrew codes applied to new construction starting in 1992, not existing homes. Your 1980s fiberboard system was built to earlier, looser standards and has likely sagged, torn, or pulled apart at joints after decades of continuous AC use. We inspect with a camera, locate the gaps, and seal or replace as needed. Call (361) 326-5060 for a free estimate.
Every 2 – 3 years for most Hialeah Gardens homes, and annually if you’re near the NW 79th Avenue industrial belt where outdoor dust loading is heavier. The combination of year-round AC and high humidity means biological growth accumulates faster than in climates with a true winter shutdown. We include seal integrity in every cleaning inspection.
Yes. The truck traffic and manufacturing activity generate fine diesel soot and road dust that gets pulled into leaking return ducts, especially in older homes with garage or crawlspace return paths. We regularly find black soot loading in systems within a half-mile of the corridor. Sealing the return side and upgrading filtration solves it.
We camera-inspect the run first, pump out any standing water, and replace saturated flex or fiberboard. Then we seal accessible joints with mastic and mesh, and verify with a static pressure test. Slab-level work is more involved than attic access, but it’s usually repairable without tearing up concrete. We’ll price it in writing after inspection.
No. Dryer vent cleaning and repair is a separate service with its own pricing and safety requirements. We do handle it, and we’ll inspect our Dryer Vent Cleaning in Hialeah Gardens while we’re on site if you ask, but AC duct sealing and dryer vent work are quoted separately. Call (361) 326-5060 and we can schedule both.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Hialeah Gardens and South Florida since 2004.