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 Sarasota
Duct sealing in Sarasota typically runs $450 – $1,200 for a whole-home system, and most jobs are completed in a single visit. We seal leaks with mastic and metal-backed tape, then pressure-test the system to verify the fix. If your ducts are losing conditioned air into the attic or crawlspace, you’re paying to cool Sarasota’s humid outdoor air instead of your living space.
We dispatch to Sarasota from our Miami office, and our crews know the territory from the Trail out to the barrier islands. We’ve worked on the original galvanized ductwork in Gillespie Park bungalows and the multi-zone flex systems in newer gated communities off Honore Avenue. Sarasota’s combination of salt air, year-round humidity, and HVAC systems that rarely get a break means duct leaks here cost more than they do in drier climates. Every minute your compressor runs to replace air bleeding out through gaps, your bill climbs. Our Duct Sealing team treats Sarasota homes with the same discipline we bring everywhere: arrive inside the window, price in writing, complete the job by the book. Call (361) 326-5060 for a free estimate.
Why Hollis Air Duct Cleaning Is Sarasota’s Preferred Duct Sealing Company
Sarasota homeowners have a particular reason to care about duct sealing: this market’s humidity forces air conditioners to run harder and longer than almost anywhere else in the country. When conditioned air escapes through leaks, the system works overtime, and the moisture that infiltrates brings mold spores with it. We’ve found black mold growing inside duct runs in older homes east of the Trail where original 1950s ductwork was never designed for today’s cooling loads.
Our reputation here is built on showing up when we said we would and leaving the price where we wrote it. Roy Castellanos leads Hollis Air Duct Cleaning under The Garrison Standard, which means written guarantees and a 365-Day Done Right Promise on every repair. If our seal fails within a year, we return and make it right at no charge, including a free second visit. Technicians are background-checked and uniformed; you know who’s arriving before they walk through your door. Phones are answered by a live person 24 hours a day, seven days a week. No voicemail loops, no callback queues.
We serve Sarasota with the same professional-grade equipment we use on commercial jobs: Rotobrush rotary systems, Nikro negative-air machines, and sealing products from Honeywell, Aprilaire, and Guardsman. That’s hardware-store-grade gear, and it shows in the finished work.
Duct Sealing Services in Sarasota
Duct Sealing Services in Sarasota address the leaks, gaps, and disconnected joints that waste conditioned air and pull humid outdoor air into your system. In a typical Sarasota home, we find 20 – 30% air loss through ductwork, which means you’re paying to cool your attic or crawlspace instead of your bedrooms. Our process starts with a pressure test to locate leaks, followed by manual sealing with mastic compound and metal-backed tape, then a second test to confirm the fix. A standard residential duct sealing job in Sarasota runs $450 – $1,200 depending on system accessibility and the extent of damage.
Leak Detection and Pressure Testing
We pressurize your duct system and measure airflow loss at the registers. This gives us a baseline and shows exactly where air is escaping. In Sarasota’s older homes near Southside Village, we regularly find original duct seams that have separated after decades of thermal expansion and corrosion from humid air.
Mastic Sealing and Metal-Backed Tape Application
We seal accessible leaks with brush-applied mastic, a thick, flexible compound that bonds to metal and flex duct alike. For high-pressure joints, we reinforce with metal-backed tape, not the cloth-backed tape that peels off in Florida’s humidity. The result is a sealed system that holds up through Sarasota’s long cooling season.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Duct Insulation in Sarasota
Duct Insulation in Sarasota protects against the temperature loss and condensation that plague unconditioned spaces in this climate. When cool air moves through ductwork in a 130-degree attic, it warms up before reaching your vents. Worse, the temperature differential causes sweating on the duct exterior, which drips onto insulation and framing, promoting mold growth. We wrap accessible ducts with formaldehyde-free fiberglass insulation rated for Florida’s humidity, then seal the vapor barrier to prevent moisture intrusion. Duct insulation in Sarasota typically costs $600 – $1,800 for a whole-home system, depending on linear footage and attic accessibility.
Attic Duct Wrapping and Vapor Sealing
Most Sarasota homes have at least some ductwork in the attic. We wrap these runs with R-6 or R-8 insulation, sealed at every seam with pressure-sensitive tape. In beachfront properties from Lido Key to Siesta Key, we pay special attention to salt-air corrosion on duct exteriors before wrapping.
Crawlspace and Garage Duct Protection
Ducts in Sarasota’s crawlspaces face ground moisture and occasional flooding during hurricane season. We elevate and insulate these runs where possible, using closed-cell foam sleeves in areas prone to water intrusion. This prevents the condensation that leads to mildew and structural damage.
Trusted Brands We Service in Sarasota
We stock parts and sealing materials from Honeywell, Aprilaire, and Guardsman, so most Sarasota jobs don’t wait on shipping. Our equipment roster includes Rotobrush rotary brush systems for pre-sealing cleaning and Nikro negative-air machines for containment during the job. When we recommend a product, we explain what it does in plain terms and why it fits your specific system. We don’t sell brands; we solve problems with the right tool for the ductwork in your home.
Common Duct Sealing Problems We See in Sarasota Homes
- Separated flex duct at plenum connections. Sarasota’s high humidity causes the adhesive on older flex duct to degrade, especially in original 1960s – 1970s systems. We find collapsed or disconnected runs in attics across Gillespie Park and Southside Village where the ductwork has reached end of life.
- Corroded metal duct seams from salt air infiltration. Homes near the coast, from Lido Key to Siesta Key, pull salt-laden air through attic vents. This corrodes galvanized ductwork from the outside in, opening seams that were tight a decade ago.
- DIY repairs with failing materials. Homeowners often try to seal leaks with standard duct tape, which dries out and peels within months in Florida’s heat. We remove these failed patches and apply mastic that flexes with temperature changes.
- Leaky return ducts pulling attic air. In Sarasota’s older ranches, return ducts run through unconditioned spaces with gaps at every joint. The system pulls 130-degree attic air mixed with fiberglass dust and mold spores, then distributes it through your vents.
Pricing for Duct Sealing in Sarasota, FL
A typical whole-home duct sealing in Sarasota runs $450 – $1,200. Duct insulation adds $600 – $1,800 depending on linear footage. What moves the price: system accessibility (crawlspace work costs more than attic access), the extent of damage (separated ducts require reconnection, not just sealing), and whether we need to clean the system first to access leaks properly. We also handle Air Duct Cleaning in Sarasota and Dryer Vent Cleaning in Sarasota if your system needs comprehensive service.
We give one flat price per system, agreed in writing before any work starts. No per-vent pricing, no add-ons at the door. The price covers pressure testing, manual sealing with mastic and metal-backed tape, post-repair verification, and cleanup. We take before-and-after photos of your ductwork so you can see what was done. Estimates are free. Call (361) 326-5060.
We Also Serve Cities Near Sarasota
Our crews work throughout the Sarasota metro and surrounding communities, including Ruskin, Sun City Center, Wimauma, and Apollo Beach. Each job carries the same written price guarantee and 365-Day Done Right Promise, whether we’re sealing ducts in a Southside Village bungalow or a new build in Apollo Beach.
Serving Sarasota, FL - Our Local Coverage Area
We’re based in the Sarasota 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 Sarasota
We typically schedule duct sealing in Sarasota within 3 – 5 business days, with dispatch coordinated from our Miami office. Call (361) 326-5060 for the next available appointment; estimates are free and include a full pressure test.
Yes, we work from the Trail east to the barrier islands, including Gillespie Park, Southside Village, and communities off Honore Avenue. Our technicians are familiar with the specific ductwork found in Sarasota’s mid-century ranches, newer high-rises, and gated developments.
We do not classify duct sealing as an emergency service; it’s a scheduled repair that typically takes 2 – 4 hours. If your system has completely failed due to duct damage, we can prioritize scheduling and coordinate with your HVAC contractor. Call (361) 326-5060 to discuss timing.
Sarasota prices align with regional rates, though coastal properties may require additional corrosion assessment. A typical whole-home sealing runs $450 – $1,200 here, comparable to Bradenton and slightly below Tampa metro pricing due to shorter travel times for our crews.
Every duct sealing job is covered by our 365-Day Done Right Promise in writing. If the seal fails within one year, Hollis returns and makes it right at no charge, including a free second visit. This applies to all Sarasota locations and is backed by The Garrison Standard.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Sarasota since 2004.