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 Tamiami
Duct sealing in Tamiami runs $450 – $1,200 for a typical single-family home, depending on how many linear feet of ductwork need treatment and whether we’re sealing accessible metal ducts or hard-to-reach branch runs. Most jobs are completed in half a day. If you’re noticing rooms that never reach the temperature on the thermostat, dust accumulating fast on furniture, or humidity that won’t budge even with the AC running, your ducts are likely pulling air from places they shouldn’t be. Our Duct Sealing team serves Tamiami homes from the canal to the Turnpike, and we’ll give you a written price before we touch anything. Call (850) 660-3272 for a free estimate.
Why Hollis Air Duct Miami Is Tamiami’s Preferred Duct Sealing Company
We’ve been sealing ducts in Miami-Dade since 2004, and the houses in Tamiami have a personality all their own. The ranch homes off SW 8th Street, the split-levels along 117th Avenue, the newer infill construction near Tamiami Park – we know how each one is built and where the ductwork typically fails. Roy Castellanos runs our crew, and he’s walked enough Tamiami attics to know exactly what 1970s galvanized ductwork looks like after 40 years of subtropical humidity: rusted seams, separated joints, and gaps where the metal has pulled away from the boot. We schedule our Tamiami work with enough time to do the job by the book; no rushing to the next stop, no half-done sealing that fails in a year.
Every technician who steps into your Tamiami home is background-checked, uniformed, and held to The Garrison Code: arrive inside the quoted window, put the price in writing before work starts, and leave the site cleaner than we found it. That’s not a slogan. It’s how we operate, and it’s backed by our 365-Day Done Right Promise. If our duct sealing fails within a year, we come back at no charge. Plain as that.
Styles & brands we work with
Duct Insulation in Tamiami
Duct Insulation in Tamiami homes matters more than it does almost anywhere else in South Florida, because most of the ductwork here runs through uninsulated attics that hit 130 degrees in July. When your ducts aren’t properly insulated, the cool air moving through them picks up heat before it reaches your registers. That’s why your bedroom at the far end of the house feels ten degrees warmer than the living room. We insulate exposed metal ducts with R-8 rated wrap, seal the longitudinal seams, and make sure the insulation extends all the way to the boot connection at each register.
When Your Attic Is the Problem
Tamiami attics are brutal environments. Blown-in fiberglass, old batt insulation, rat activity, and years of dust accumulation all work against your duct system. If your ducts are bare metal or wrapped in insulation that’s torn, water-stained, or falling off, you’re paying to cool your attic. We replace degraded duct insulation and seal the outer jacket so humidity can’t condense on the metal underneath.
What It Costs
Duct insulation for a typical Tamiami ranch home runs $700 – $1,600 depending on how much ductwork is exposed and accessible. We include a written line-item price before we start, so you’ll know exactly what you’re paying for, and the 365-Day Done Right Promise covers the insulation work in writing.
HVAC Duct Sealing in Tamiami
HVAC Duct Sealing in Tamiami homes usually means sealing the metal ducts that were installed when the house was built – and in this part of town, that’s often the 1960s through the 1980s. Those ducts were sealed with whatever the original crew had on hand, which wasn’t much. Fiberglass tape dries out. Foil tape peels. Duct joints separate as the house settles. The result: your system is sucking air from the attic and blowing conditioned air into dead space. We use water-based mastic, applied to clean metal, and Aeroseal for ducts that are buried or impossible to reach by hand. The combination is the difference between a seal that lasts a season and a seal that lasts a decade.
Sealing the Can’t-Reach Ducts
A lot of Tamiami ductwork runs through soffits, chases, and tight attic corners where nobody can physically reach the leaks. That’s where Aeroseal earns its price. It’s a pressurized sealing system that finds the leaks from inside the duct. The sealant particles build up at each gap until the leak is closed. For a 1,500-square-foot Tamiami home, plan on $900 – $1,800 for a full Aeroseal treatment on inaccessible ducts.
Sealing the Metal You Can See
For exposed metal ducts, we brush and prep the surface, then apply mastic to every seam, joint, and connection. Mastic is a thick paste that hardens into a flexible, airtight seal. It doesn’t dry out like tape, and it holds up under the thermal expansion that happens every time your AC cycles on a 95-degree Tamiami afternoon. Expect $350 – $800 for accessible metal duct sealing on a standard single-family home.
Trusted Brands We Service in Tamiami
We work on duct systems tied to every major HVAC brand you’ll find in Tamiami homes: Carrier, Trane, Rheem, Goodman, Lennox, and older units from the 1980s and 1990s that are still running. Our equipment includes Rotobrush rotary brush systems and Nikro negative-air machines, plus filtration products from Honeywell and Guardsman. We stock the mastics, tapes, and insulation materials we use most on Tamiami jobs, which means fewer return trips and a faster schedule for you. The tools are the same ones commercial crews use; we just use them in a 1970s ranch house instead of an office building.
Common Duct Sealing Problems We See in Tamiami Homes
- Flood muck from the Tamiami Canal. Homes along the canal have ductwork that’s been through at least one flood event. The dried muck left behind re-entrains into your airstream every time the blower kicks on, and sealing over it just traps the problem inside. We remove source contamination before we seal, which is the only sequence that actually works.
- Rusted galvanized seams. The original ducts in 1960s – 1980s homes rust from the outside in. Miami’s humidity condenses on the metal, the condensation rusts the steel, and the seams open up. Mastic applied directly to rusted metal will peel within a season. We clean and prep the surface first so the seal bonds.
- Leaks at the boot-to-drywall connection. Where the duct meets the register, you’ll almost always find a gap. Air gets pushed into the wall cavity instead of the room. We seal every boot connection with mastic, not tape, and check each one with a smoke pencil before we call the job done.
- Attic air being pulled into the return. Return ducts in Tamiami homes often pull air from the attic through unsealed joints. That means insulation fibers, rat droppings, and 130-degree attic air enter your breathing space. Sealing the return side is non-negotiable if you want clean indoor air and a system that cools efficiently.
See the difference
Before
After
Before
After
Before
AfterPricing for Duct Sealing in Tamiami, FL
Here are the numbers, straight up. Sealing accessible metal ducts in a 1,200 – 1,800-square-foot Tamiami home runs $350 – $800. Full-home duct sealing that includes branch runs and boots lands between $800 and $1,800. If your ducts are buried in soffits or chases, Aeroseal treatment adds $900 – $1,800 depending on the system size and how much leakage we find. Duct insulation runs $700 – $1,600 on top of sealing if your attic wrap is degraded. The total investment for a full sealing job – ducts, boots, and insulation – typically ranges from $1,200 to $3,000 on Tamiami homes. We write every job down on paper before we start, and that number doesn’t move. Call (850) 660-3272 and we’ll give you a free, written estimate for your exact home.
We Also Serve Cities Near Tamiami
Hollis Air Duct Miami schedules Duct Sealing in Tamiami and handles jobs in the surrounding metro as well: Miami, Miami Beach, Miami Gardens, and Doral. Crews are dispatched from our South Florida office, so if you’re in a nearby neighborhood, we’ll still get to you fast and with the same written-price guarantee.
Serving Tamiami, FL - Our Local Coverage Area
We’re based in the Tamiami 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 Tamiami
Homes along the Tamiami Canal often have ductwork that has been through at least one flooding event. The dried muck and debris left inside the ducts will keep reintroducing contaminants into your air even after sealing, and the high moisture near the canal means any sealant applied over contaminated or damp surfaces will peel. We perform source removal with HEPA-filtered negative pressure before applying any sealing material. It’s the only way to make the seal hold and the air clean. Call (850) 660-3272 to get your canal-adjacent home inspected.
Sealed ducts stop the system from pulling unfiltered air in through the leaks. When your ducts are leaking, every time the blower runs it draws attic air, insulation fibers, and exterior dust into your airstream. Tamiami has constant construction and unpaved road shoulders, so the dust load is high. Sealing the ducts means the only air entering your living space passes through the filter. That reduces the dust settling on furniture and the amount you’re breathing daily. We’ll give you a written price before we start, so you know exactly what the job costs.
No. Duct sealing stops air leakage, but it doesn’t kill mold that’s already present or prevent new mold from forming if the ducts stay damp. In Tamiami’s subtropical humidity, mold grows on dust and organic debris inside ducts. The correct sequence is source removal first, antimicrobial treatment second, and sealing third. Sealing then prevents humid attic air from re-entering and re-feeding the mold. If you’re seeing mold around your registers, call (850) 660-3272 for an evaluation.
Most of the time, no. Surface rust is common on 1980s galvanized ducts in Tamiami, and it doesn’t automatically mean replacement. We clean and prep the metal, then apply mastic designed to bond to aged steel. Severe rust that has perforated the metal is a different situation – in those cases, we’ll show you photos of the damage and recommend replacement of the affected sections before sealing. The 365-Day Done Right Promise covers our sealing work in writing, so if a seam fails within a year, we’re back at no charge.
Yes. Sealing only the supply side while leaving the return side leaking means your system keeps pulling attic air into the airstream. That defeats the purpose. Return ducts in Tamiami homes are often the leakiest part of the system because they’re under negative pressure, which actively draws in attic air through every gap. We always seal both sides during a full job, and we check the results with a smoke pencil and pressure readings before we leave.
Call for Your Free Tamiami Duct Sealing Estimate
If your Tamiami home has original metal ducts, high dust, uneven temperatures, or humidity that won’t settle down, duct sealing is the fix. We’ll come out, inspect the system, and give you a written price for the exact work your house needs. No pressure, no moving numbers, and a full year of coverage in writing. Call (850) 660-3272 today and speak with a live person.
Written by Roy Castellanos, Owner at Hollis Air Duct Miami, serving Tamiami and the surrounding South Florida area since 2004.