Whole-home duct cleaning
Dryer vent cleaning
Camera inspection
Sanitizing & deodorizingWhole-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 Opa-locka
Duct sealing in Opa-locka typically runs $800 – $2,400 depending on how much of the system needs work, and most jobs take a single day once we’re inside. If you’ve noticed weak airflow from certain registers, dust building up faster than it should, or rooms that never seem to cool evenly, leaking ducts are usually the culprit, and sealing them is the fix that lasts. We’ve worked on homes all over Opa-locka, from The Triangle to the streets off Opa-locka Boulevard, and we know what these older Florida houses throw at you. Call (850) 660-3272 for a written quote before any work begins.
Why Hollis Air Duct Miami Is Opa-locka’s Preferred Duct Sealing Company
We’re part of the Garrison Partners family, and every Hollis location runs on The Garrison Standard. That means we arrive inside the window we quoted, we put the price in writing before we touch anything, we do the job by the book, and we leave the site clean. The technicians who show up at your door in Opa-locka are background-checked and uniformed, and you’ll know who’s coming before they arrive. Roy Castellanos leads our team, and he holds every job to one standard: if it’s not right, we make it right.
The 365-Day Done Right Promise applies to every Duct Sealing job we do in Opa-locka. If the seal fails within a year, we come back at no charge. That’s not a verbal promise. It’s written on every job ticket. We’ve sealed ducts in enough 1950s and 1960s concrete-block homes here to know exactly where the leaks hide, and we’ve built our process around those homes rather than forcing a suburban McMansion approach onto them. Opa-locka has its own housing stock and its own problems, and we treat them that way.
Styles & brands we work with
Duct Sealing Services in Opa-locka
Duct Sealing Services in Opa-locka means finding every place conditioned air escapes before it reaches your rooms, then closing those gaps with mastic and mesh, foil tape, or other appropriate materials. What we find most often in this city: original duct runs that were installed with minimal sealing at the joints, supply boots that have pulled away from the drywall, and return plenums that are sucking in attic air. A full sealing job on a typical Opa-locka single-family home runs $800 – $1,800. If the ducts are badly degraded, the work may extend into partial replacement, which pushes the range higher, up to $2,400 or more for larger systems.
Sealing Supply and Return Runs
We seal every accessible joint in the supply and return runs, plus the connections at the air handler and the register boots. In Opa-locka’s older homes, the return side is often worse than the supply side because original return cavities were built using wall or floor chases that were never sealed at all. We test before and after with a manometer so you can see the actual leakage drop in numbers.
Plenum and Boot Sealing
The plenum is where your duct system meets the air handler, and on Opa-locka’s flat-roofed concrete-block homes, it’s often the single biggest leak point. Heat from the attic and moisture from the air handler both attack that connection. We seal it with mastic and mesh, then insulate it so the cool air stays cool on its way to your rooms.
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.
Duct Insulation in Opa-locka
Duct Insulation in Opa-locka means wrapping uninsulated or under-insulated duct runs so the cooled air inside them doesn’t warm up before it reaches the register. In a city where summer attic temperatures routinely exceed 130 degrees, uninsulated ducts bleed energy all day long. We see this constantly on original metal ductwork from the 1960s in The Triangle and along Sharazad Boulevard. Insulating exposed supply runs typically runs $400 – $1,100 on top of sealing, depending on the linear feet of duct and whether the ducts are accessible in an attic or buried in a ceiling.
Insulating Existing Metal Ducts
If your home has galvanized metal ducts that were never wrapped, we can add fiberglass or closed-cell insulation around them. This is a common add-on when we’re already sealing the joints, because the two jobs go together naturally. The insulation keeps the metal from sweating in Opa-locka’s humidity, which also cuts the moisture that feeds mold on the duct exterior.
Replacing Failed Duct Insulation
In homes where the original insulation has deteriorated, torn, or been soaked by roof leaks, we strip the old material and replace it. The humid subtropical climate here is tough on insulation. Once it’s been wet, it loses R-value and can hold moisture against the duct itself, which accelerates corrosion and fosters biological growth.
Trusted Brands We Service in Opa-locka
We work on every brand of ductwork and HVAC equipment you’re likely to find in an Opa-locka home, but we stock parts and materials from the names we trust: Rotobrush for rotary brush cleaning systems, Nikro for negative-air filtration, and Guardsman for antimicrobial and sealing products. When you’re dealing with original 1960s duct runs, off-the-shelf parts don’t always fit. We keep proper mastic, mesh, foil tapes, and access collars on the truck so we can finish a sealing job in one visit. No running back to the supply house and leaving you with a half-finished system.
Common Duct Sealing Problems We See in Opa-locka Homes
- Crushed or disconnected runs in flat-roofed homes. The shallow attic spaces in Opa-locka’s concrete-block houses leave little room for duct runs, and over the decades, someone’s been up there stepping on them or shoving boxes against them. Once a run is crushed or pulled apart, you can’t seal it from the outside without first finding it, which is why camera inspection is standard on our jobs here.
- Mastic sagging before it cures. Opa-locka’s relative humidity often sits above 80%, and wet mastic that sags before it sets will reopen the exact leak it was supposed to close. We use humidity-tolerant mastics and schedule curing checks on high-humidity days. It’s a small detail that matters in South Florida, and it’s one many out-of-town crews miss.
- Friable fiberglass duct board in The Triangle. Many homes in The Triangle still have original fiberglass duct board that has become brittle and crumbly. It sheds fibers during sealing, and without HEPA filtration on the negative-air machine, those fibers end up in the living space. We run HEPA-filtered negative air on every job involving fiberglass duct board, and we encapsulate the material rather than just smearing mastic over it.
- Leaks at the air handler connection. On Opa-locka’s older split systems, the air handler sits in a closet or a garage niche, and the connection between the handler and the duct system was often sealed with whatever the installer had on hand, which is usually nothing. We rebuild that connection with mastic and mesh, then verify with a smoke test or pressure test.
See the difference
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After
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AfterPricing for Duct Sealing in Opa-locka, FL
A straightforward duct sealing job in Opa-locka, where the ducts are accessible and in reasonable condition, runs $800 – $1,400. If we’re also sealing the return chase and rebuilding the plenum connection, that pushes toward $1,500 – $1,800. Full encapsulation of friable fiberglass duct board in The Triangle homes, where we’re essentially rebuilding the interior surface of the duct, runs $1,800 – $2,400 for a typical single-family system. The price you get is the price you pay. We write it down before we start, and it doesn’t move once the technician is on site. Call (850) 660-3272 for a free estimate on your Opa-locka home.
We Also Serve Cities Near Opa-locka
Our crews handle Duct Sealing in Opa-locka and the surrounding area daily. We also serve homeowners in Miami, Miami Beach, Miami Gardens, and Doral. If you’re in any of these cities and dealing with leaking ducts, the same written pricing and 365-Day Done Right Promise apply.
Serving Opa-locka, FL - Our Local Coverage Area
We’re based in the Opa-locka 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 Opa-locka
We most often find duct runs that were never sealed at the joints, supply boots that have separated from the ceiling or floor, and return plenums that are drawing attic air directly into the system. The original installers typically relied on friction fit alone, and after 50 or 60 years of thermal cycling, those friction fits have failed. We also find evidence of prior handyman repairs, usually foil tape that has dried out and peeled. Call (850) 660-3272 and we’ll put a camera in your ducts to show you exactly what we’re seeing before we recommend sealing work.
Opa-locka’s subtropical humidity attacks mastic before it cures, which means the product and the technique have to be right or the seal will fail within weeks. We use humidity-tolerant mastic and schedule our sealing work so the material has time to set properly. We also see condensation on the outside of metal ducts in high-humidity homes, which is why insulation and vapor barrier evaluation are part of every sealing job. If you’re concerned about mold or moisture, call (850) 660-3272 and we’ll walk you through what applies to your home.
In many cases, yes, but it depends entirely on the condition of the fiberglass duct board. If it’s friable but structurally intact, we can encapsulate it with a sealant that binds the surface and stops fiber release, bringing it in line with NADCA standards. If the duct board has lost its structural integrity, encapsulation won’t hold and partial replacement becomes necessary. We’ll show you the condition on camera before recommending one path or the other.
You’ll notice rooms that never reach the thermostat temperature, registers that blow weak air, and often a spike in your electric bill during summer when the system runs longer trying to compensate. In Opa-locka’s flat-roofed homes, the attic space is tight and runs get stepped on or crushed by stored items. If your air handler is running constantly but your home still feels warm in some rooms, a disconnected or crushed run is a likely cause. We’ll confirm with a camera inspection before we do any sealing work.
Duct sealing reduces the amount of outside air and dust that gets pulled into your ducts through leaks, but it does not eliminate dust entirely, especially in zones near the redevelopment of the historic Moorish Revival buildings. Sealing cuts the passive infiltration path, which is a meaningful change for homes near active construction. It also keeps your system from re-distributing dust that settles in the attic. The combination of sealing and proper filtration is the real answer. Call (850) 660-3272 and we’ll give you a straight answer about what sealing will and won’t do for your dust problem.
Call Hollis Air Duct Miami for Duct Sealing in Opa-locka
If you’re in Opa-locka and you want your ducts sealed right, the first step is a phone call. We answer live, 24/7. We’ll schedule a time, arrive inside the window, put the price in writing, and do the job to The Garrison Standard. Roy Castellanos and our crew have sealed ducts in The Triangle, in the neighborhoods off Opa-locka Boulevard, and across the city’s older concrete-block homes. The 365-Day Done Right Promise covers every job. Call (850) 660-3272 for a free estimate.
Written by Roy Castellanos, Owner at Hollis Air Duct Miami, serving Opa-locka and South Florida.