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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After
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AfterFast, Reliable Duct Sealing Across Trinity
Duct sealing in Trinity typically runs $450 – $1,200 for a whole-home system, with most jobs completed in a single visit after a written estimate. Our crews serve Trinity from our Miami scheduling office, dispatching background-checked, uniformed technicians who know the area’s 1990s – 2000s master-planned communities and their specific ductwork challenges. Call (361) 326-5060 for a free estimate with a written price before any work starts.
We know Trinity’s homes. The block-and-stucco construction off Trinity Boulevard, the flex-duct-heavy systems in Champions Club, the hallway ceiling returns common in Fox Wood. That local familiarity matters because duct sealing here isn’t a generic service. Trinity’s tight envelopes and year-round AC runtime create a specific failure pattern that a crew from Tampa or Orlando might miss. We don’t guess at what’s behind your drywall. We inspect first, price in writing, then seal by the book under The Garrison Standard.
Why Hollis Air Duct Cleaning Is Trinity’s Preferred Duct Sealing Company
Hollis Air Duct Cleaning has been part of the Garrison Partners family since 2004, and our reputation in Trinity is built on showing up inside the quoted window and leaving the site clean. Homeowners here aren’t looking for the lowest teaser price. They’re looking for a crew that won’t renegotiate at the door.
Our technicians are background-checked and uniformed. You know who’s walking into your home before they arrive. The price is written down before any work starts, and it does not move. Every repair is covered by our 365-Day Done Right Promise: if the work fails within a year, we return and make it right at no charge, including a free second visit. That’s not a slogan. It’s written on every job.
Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops. No callback queues. No waiting until Monday to schedule.
We understand Trinity’s local conditions because we’ve worked here repeatedly. The live-oak canopy that produces heavy spring pollen. The Starkey Wilderness Park corridor that drives airborne debris into returns. The slab foundations with ceiling-mounted ductwork that make access tricky. That knowledge changes how we approach a sealing job.
Duct Sealing Services in Trinity
Duct Sealing Services in Trinity address a specific problem: conditioned air escaping through gaps, loose collars, and failed tape at duct joints, forcing your AC to run longer and harder while pulling unfiltered attic or garage air into the system. In Trinity’s climate, where systems run 8 – 10 months a year, even a 15% leakage rate can add hundreds to annual cooling costs. Most Trinity homeowners need sealing when they notice uneven room temperatures, dust from ceiling vents, or utility bills that climb without explanation. A typical whole-home duct sealing in Trinity runs $450 – $1,200 depending on system size, access difficulty, and whether source removal is needed first.
Leak Detection and Camera Inspection
We start every sealing job with a camera run through the supply and return ducts. Trinity’s mix of rigid trunk lines and flexible branch ducts means leaks often hide behind the air handler or in crushed flex runs that visual inspection from the register can’t reach. Our techs document what they find on screen so you see the problem before we price the fix.
Mastic Sealing and Joint Reinforcement
We seal accessible joints with duct mastic, a water-based sealant that remains flexible and won’t dry out like foil tape. In Trinity’s humidity, tape adhesive fails within a few years. Mastic doesn’t. We reinforce collars at the air handler and trunk connections, the most common failure points in flex-duct systems.
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 Trinity
Duct Insulation in Trinity prevents the cool air in your ducts from warming up before it reaches the vent, a constant battle in attics that hit 140°F during July and August. Uninsulated or poorly insulated ductwork in Trinity homes forces the compressor to cycle longer, increasing wear and energy use. Most Trinity homes built in the 1990s – 2000s have some insulation, but it compresses, tears, or gets displaced by rodents over time. Adding or replacing insulation typically runs $600 – $1,800 for a complete system, depending on linear footage and attic access.
Attic Duct Insulation Replacement
We remove degraded fiberglass wrap or torn foil-backed insulation and install new material rated for Florida’s humidity and temperature extremes. In Trinity’s tight-attic homes, we work carefully around trusses and recessed lighting to avoid compressing the insulation, which would defeat its R-value.
Vapor Barrier Repair
Trinity’s humidity means condensation on cool duct surfaces is inevitable without a proper vapor barrier. We inspect and repair the outer jacket on insulated flex duct, replacing sections where the vapor barrier has torn and moisture has saturated the fiberglass core.
Trusted Brands We Service in Trinity
Our equipment comes from Rotobrush, Nikro, and Abatement Technologies, the same brands commercial crews use in hospitals and schools. For filtration and sealing products, we stock Honeywell, Aprilaire, and Guardsman components. We keep common parts on our Trinity-area vans so most jobs don’t wait for a parts run. That matters when you’re dealing with a system that’s leaking conditioned air into your attic during August. We don’t show up with hardware-store gear and hope it works. We bring the tools the job actually requires.
Common Duct Sealing Problems We See in Trinity Homes
- Sealing joints before source removal. Leftover drywall dust and construction debris from the 1990s – 2000s build era gets glued into the system by fresh mastic and keeps recirculating. We remove the debris first, then seal.
- Chasing leaks on flex-duct runs without camera inspection. Crushed or disconnected flex behind the air handler goes unfound even after mastic and tape are applied. The camera finds what eyes can’t.
- Skipping the hallway and ceiling return grilles common in Trinity slab homes. Pollen pulled from the live-oak canopy settles in these returns and defeats the seal’s air-quality benefit. We clean and seal the full return path, not just the trunk lines.
- Oversized systems cycling on and off too frequently. Common in Trinity’s master-planned homes, this flexes joints and loosens collars faster than right-sized equipment. We flag this during inspection so you know if the root cause is mechanical, not just leaky.
Pricing for Duct Sealing in Trinity, FL
A typical whole-home duct sealing in Trinity runs $450 – $1,200. Smaller homes with straightforward attic access and minimal flex-duct work fall at the lower end. Larger homes with extensive crushed flex, multiple air handlers, or the need for source removal first run higher. We do not quote per-vent prices or bait you with a low figure that balloons once we’re inside. The price is written down before any work starts, and it does not move at the door.
What affects cost: system size (tonnage and linear footage), ratio of rigid to flex duct, attic or crawlspace access difficulty, whether camera inspection reveals disconnected runs requiring repair rather than simple sealing, and whether source removal of construction debris or pollen buildup is needed first. We photograph the before condition, show you the camera footage, and agree on scope and price before opening a single can of mastic.
Estimates are free. Call (361) 326-5060 to schedule.
We Also Serve Cities Near Trinity
Our crews travel throughout the region for scheduled duct sealing work. We regularly serve Trinity homeowners and also take jobs in Jacksonville, Miami, Tampa, and Orlando. Dispatch and scheduling are coordinated from our Miami office, with local crews deployed to each market. If you’re outside Trinity city limits but in the surrounding area, call us. We’ll tell you honestly whether your location fits our route schedule.
Serving Trinity, FL - Our Local Coverage Area
We’re based in the Trinity 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 Trinity
Yes, many Trinity homes from the 1990s – 2000s have significant leakage from day one due to builder-grade tape failing and flex-duct collars loosening during the first years of thermal cycling. The tight envelope that makes these homes efficient also traps that leakage inside the conditioned space, so you feel it as dust and uneven temperatures rather than obvious drafts. Call (361) 326-5060 for a camera inspection that will show you exactly what’s happening inside your ducts.
Trinity’s combination of tight-envelope construction, live-oak and pine pollen load, and 8 – 10 months of annual AC runtime creates a unique recirculation trap. Pollen pulled into returns has nowhere to leak out, so it keeps cycling until it’s removed or sealed into the system. Sealing without source removal here actually makes air quality worse by trapping debris permanently. That’s why our Duct Sealing protocol for Trinity always starts with inspection and removal, then seals the clean system.
We run a camera through every accessible supply and return duct, then use a pressure pan test at each register to quantify leakage by zone. Rigid trunk lines in Trinity homes typically leak at joints and seams. Flex ducts leak at collars, where they’re crushed by attic storage, or where they’ve pulled completely off the boot. The camera finds the visual damage. The pressure test proves how much air you’re losing. Both together let us price the fix accurately.
A higher MERV filter restricts airflow slightly, which increases pressure in the duct system and can worsen existing leaks by forcing more air through gaps. If your Trinity home has a MERV 11 or 13 filter and leaky ducts, you’re probably losing significant efficiency. We check filter type and fit during our inspection and will tell you if the filter is compounding a leakage problem. The sealing itself doesn’t change based on MERV, but the overall system performance does.
Our technician arrives in a marked van, uniformed and background-checked, inside the quoted window. They inspect registers, run a camera through the duct system, and perform pressure testing. They show you the footage, explain what they found, and write down a fixed price for the agreed scope. With your approval, they perform source removal if needed, seal all accessible joints with mastic, reinforce collars, replace damaged flex, and retest pressure to confirm improvement. They photograph before and after, leave the site clean, and provide written documentation of the 365-Day Done Right Promise. Most visits take 3 – 5 hours. Call (361) 326-5060 to schedule yours.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Trinity since 2004 as part of the Garrison Partners family.