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.
Abatement Technologies Duct Sealing in Miami: What to Know First
Abatement Technologies duct sealing in Miami typically runs between $450 and $1,200 depending on how many leaks we find and where they sit in the system. Most jobs take four to six hours, and we schedule them within a week of your call. We’re an independent Abatement Technologies service provider, which means we work on the equipment, not for the manufacturer, and we give you a written price before any sealant leaves the truck.

This page is for Miami homeowners who own Abatement Technologies equipment and have noticed weak airflow, hot rooms in summer, or dust that keeps coming back no matter how often they clean. If that sounds familiar, call (850) 660-3272 and ask for Roy. We’ll explain what’s happening in plain terms.
How Abatement Technologies Products Fail – and How We Fix Them
Roy Castellanos has seen enough Abatement Technologies installs across Miami to know exactly where they leak. Here are the failure patterns we find, week after week, in Brickell condos, Kendall ranches, and Coral Gables bungalows:
- Pleated media cabinet seams on the HEPA side. Abatement Technologies builds commercial-grade filtration into many of its residential air handlers. The media cabinet frame can separate at the corners after years of Miami humidity cycling. We clean the joint, apply UL-listed mastic, then reinforce with a mechanical fastener if the frame allows. That’s a permanent fix, not a tape job.
- Blower access panel gaskets on higher-CFM units. On the larger Abatement Technologies blower modules, the factory gasket compresses flat over time. Hot attic air gets pulled in right at the panel seam. We replace the gasket material rather than smearing sealant over it, because sealant on a service panel means a warranty fight later.
- Return plenum joints near the filter box. The filter housing on Abatement Technologies equipment sits tighter than most, but the plenum attachment around it is often a field-fabricated weak point. We reseal that transition with duct mastic and mesh tape, then pressure-test the return side before calling it done.
- Flex duct collars undersized for Miami attics. Abatement Technologies systems move serious air, and the cheap flex collars some installers used can blow loose under high static pressure. We find this constantly in attics that hit 130°F in July. Our fix is a sheet-metal takeoff sized to the duct, sealed with mastic and inspected with a flashlight before we leave.
- Condensation sweating on uninsulated supply duct. Not every Abatement Technologies install pays attention to Miami’s dew point. When supply duct isn’t insulated properly, the outside of the duct sweats and the moisture eats away at whatever sealant was there originally. We correct the insulation first, because sealing over a sweating duct is throwing your money away.
Styles & brands we work with




Our Abatement Technologies Duct Sealing Process
When you call about Abatement Technologies duct sealing, here’s what actually happens on the job:
- 1
Walkthrough and written scope. We inspect the full duct run, from the Abatement Technologies unit to every register. You get a written price before work starts. It does not move at the door.
- 2
Leak identification. We use a blower door or soft pressure test to find exactly where air escapes. No guessing, no “we’ll seal what we can see.”
- 3
Parts decision, made with you. If we need replacement collars or gaskets, we tell you the OEM option and the quality aftermarket option, with real prices for both. Our default is UL-listed duct mastic, never tape.
- 4
Seal and reinforce. Every joint gets cleaned, mastic-applied, and mesh-taped where the gap warrants it. High-stress joints get mechanical fasteners.
- 5
Test the repair. We run the system and re-check airflow at the registers. You see the numbers before we pack up.
- 6
Documented and guaranteed. Before-and-after photos are yours to keep. Every Abatement Technologies duct sealing job carries the 365-Day Done Right Promise in writing. If a seal fails within a year, we come back at no charge and fix it.
See the difference
Before
After
Before
After
Before
AfterWhat Abatement Technologies Duct Sealing Costs in Miami
Straight numbers, the way we give them over the phone:
- Single-joint repair (one accessible seam, collars, or plenum transition): $150 to $300. This covers the labor, mastic, and testing.
- Partial duct sealing (a specific run, like one bedroom’s supply trunk): $350 to $700 depending on how much of the run is accessible and whether insulation needs correcting.
- Whole-system Abatement Technologies duct sealing (typical for a 2,000 to 3,000 sq ft Miami home): $700 to $1,200. Includes return-side priority, because that’s where Miami attic heat gets pulled in hardest.
- Add-on insulation correction on sweating duct: $3 to $5 per linear foot, quoted after we see what’s there.
What moves the price is access. A duct run through a low-clearance attic costs more than one through a garage chase. We tell you that before we start, not after. Call (850) 660-3272 for a free estimate and an exact number for your system.
Why Miami Homeowners Call Hollis Air Duct Miami for Abatement Technologies Work
Because we approach Abatement Technologies equipment the way a disciplined crew should. Our technicians are background-checked and uniformed. They arrive inside the window we give you, price the job in writing before any work begins, and leave the site cleaner than they found it. That’s The Garrison Code, and it’s written down, not implied.
Roy Castellanos grew up in Los Angeles and trained at Los Angeles Trade-Technical College before spending years running HVAC and duct crews across Southern California. He’s been working Miami homes, including Brickell high-rises and older Coral Gables houses, for well over a decade. The humidity here taught him things no classroom covers. If you can’t explain the job plainly, you probably shouldn’t be doing it. Roy explains every Abatement Technologies repair plainly, then backs it with the 365-Day Done Right Promise.
One more thing: if you also have Lennox, Trane, or Carrier equipment elsewhere in the house, we service those too. We’re not a one-brand shop.
FAQs
No, as long as the work is done without modifying the equipment itself. We seal the ductwork and transitions, not the Abatement Technologies cabinet. We use materials that meet Florida Mechanical Code and never touch the unit’s internals. If you’re worried about a specific warranty term, we’ll show you what we’re doing and where before any sealant goes on.
Because some crews quote a low per-joint price and then “discover” more joints once they’re on site. We don’t do that. Your quote is written from the walkthrough and it holds. The price we quote for Abatement Technologies work is the price you pay, unless you ask to expand scope mid-job.
We hand you before-and-after photos of every joint we sealed, along with the air pressure and airflow numbers from before and after. You’re not taking our word for it. You’re looking at documentation. If a seal fails within a year, the 365-Day Done Right Promise means we return at no charge.
Most Abatement Technologies duct sealing jobs are scheduled within five to seven business days of your call. We answer the phone live, 24/7, so you’ll know your slot before you hang up. Call (850) 660-3272 and ask for Roy. He’ll give you a window and keep it.
If the duct is intact and just leaking at the joints, sealing is the right fix and far less expensive than replacement. If the duct liner is deteriorated from Miami humidity or the flex has collapsed, we’ll tell you straight and show you photos. We don’t seal over a duct that should be replaced, and we don’t sell replacement when sealing will hold.
Written by Roy Castellanos, Owner, Hollis Air Duct Miami at Hollis Air Duct Miami, serving Miami and nearby areas.