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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AfterFast, Reliable Duct Sealing Across Four Corners
We dispatch our Duct Sealing crews to Four Corners from our Miami scheduling office, and most appointments are set within a few business days. If you live near Loughman Road, Champions Gate, or the rolling subdivisions between US-27 and I-4, you’re inside our standard service zone. Call (361) 326-5060 for a free estimate.
Four Corners is not like older Florida towns. Most homes here went up fast in the 2000s and 2010s to feed the Disney-area rental market. That means relatively young HVAC systems with a specific set of problems: builder-era install defects, unsealed plenum joints, and flex duct runs that were never properly mastic-sealed in the attic. We’ve worked enough of these homes to know what the inspectors missed.
Why Hollis Air Duct Cleaning Is Four Corners’s Preferred Duct Sealing Company
We’ve been in business since 2004 as part of the Garrison Partners family, and our Duct Sealing in Four Corners reputation has grown through repeat calls from property managers and homeowners who got tired of musty odors returning two weeks after a standard cleaning. Our technicians are background-checked, uniformed, and expected to operate by The Garrison Code: arrive inside the quoted window, price the job in writing before touching anything, finish by the book, and leave the site clean.
Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops. No callback queues waiting until Monday.
Every repair we perform in Four Corners carries our 365-Day Done Right Promise in writing. If the work fails within a year, we come back and make it right at no charge, including a free second visit. That promise is backed by the Garrison Standard, not a handshake.
Duct Repair in Four Corners
Duct Repair in Four Corners usually means fixing what the builder’s crew left unfinished: disconnected flex collars at the plenum, sagging runs in hot attics, and return boxes that were never sealed with mastic. Because most Four Corners homes are slab-on-grade Florida construction with ductwork above the ceiling, every joint sits in 140-degree attic heat for half the year. When that hot, humid air pulls into the system through gaps, it hits the cool conditioned air and condenses. That’s when mold starts.
A typical duct repair in Four Corners runs $280 – $520 for standard flex collar and plenum resealing, with more extensive multi-zone work in larger rental properties reaching $680 – $950. We write the price down before any work starts, and it does not move at the door.
Disconnected Flex Runs
We regularly find flex duct that has pulled completely free of the plenum collar, especially in homes with multiple air handlers where short-cycling and high static pressure stress the connections. Our crew reconnects with mechanical fasteners and seals with duct mastic rated for Florida attic conditions.
Crushed or Kinked Supply Lines
Housekeeping crews in rental turnovers sometimes store items in attic access areas and crush duct runs against trusses. We replace damaged sections with properly sized flex and restore designed airflow to each register.
Air Duct Sealing in Four Corners
Air Duct Sealing in Four Corners is often the difference between a duct cleaning that lasts and one that doesn’t. Sealing closes the gaps where humid outside air enters the system, which matters enormously here because Central Florida’s afternoon thunderstorms and high dew points keep attic moisture constant year-round. An unsealed duct system in Four Corners doesn’t just leak conditioned air; it cultivates biological growth inside the line.
Whole-system duct sealing in Four Corners typically costs $480 – $780 for a standard single-air-handler home, with larger vacation villas and multi-handler rental properties running $890 – $1,400. We price by the system, not by the vent. One flat price per system, agreed in writing before we start.
Mastic Sealing at Plenums and Collars
We apply UL-181 rated duct mastic to every plenum joint, collar connection, and register boot. Unlike foil tape, which degrades in Florida attic heat within a few seasons, mastic remains flexible and maintains its seal through thermal expansion cycles.
Leak Detection Before Sealing
Our crew pressurizes the system and uses smoke pencil testing to locate leaks that visual inspection misses, especially at hidden seams in buried flex runs. We mark every leak, show the homeowner the footage, then seal and verify.
Trusted Brands We Service in Four Corners
Our equipment roster includes Rotobrush rotary brush systems for source removal, Nikro negative-air machines for containment during cleaning, and sealing and filtration products from Abatement Technologies and Guardsman. We stock common plenum collars, flex duct sizes, and mastic compounds used in Four Corners’s 2000s-era construction, so most repairs don’t wait on parts. When a rental property manager calls with guest complaints and a same-week turnover, that local parts availability matters.
Common Duct Sealing Problems We See in Four Corners Homes
- Builder handover debris in supply and return ducts. Drywall dust, wood scraps, and insulation fragments left during construction get sealed into the system when the HVAC first fires up. We remove this material with HEPA-filtered negative-air methods before sealing, or the debris continues circulating through whatever new leaks form.
- Unsealed plenum joints pulling humid attic air. In Four Corners’s hot, vented attics, a 1/8-inch gap at the plenum can draw enough moisture to support mold growth on the duct liner within a single humid season. Sealing these joints stops the moisture source.
- Oversized flex runs near multi-air-handler units. Many Four Corners rental properties were spec-built with extra capacity that never got properly balanced. Long, oversized flex runs create turbulence and static pressure spikes that pop collars and split seams. We resize or support these runs and seal the connections properly.
- Closed registers during rental turnovers stressing the system. When housekeeping shuts vents to speed cooling of individual rooms, backpressure forces leaks at the weakest joints. We seal the system and advise managers on proper register management to prevent recurrence.
Pricing for Duct Sealing in Four Corners, FL
| Service | Typical Range in Four Corners |
|---|---|
| Standard duct repair (single air handler) | $280 – $520 |
| Whole-system duct sealing (single air handler) | $480 – $780 |
| Multi-zone repair/sealing (vacation villas, 2+ handlers) | $680 – $950 |
| Large rental property full seal | $890 – $1,400 |
What moves a Four Corners job toward the higher end: multiple air handlers, buried flex duct requiring camera inspection, extensive builder-defect remediation, or properties where previous handyman repairs used incompatible tape that must be removed before proper sealing. What keeps it lower: accessible attic space, straightforward plenum access, and systems that haven’t been repeatedly patched. Every estimate is free. Call (361) 326-5060 to schedule.
We Also Serve Cities Near Four Corners
Our crews travel throughout Central and North Florida for scheduled duct sealing work. We regularly serve Jacksonville, Miami, Tampa, and Orlando property owners with the same written pricing and 365-Day Done Right Promise we offer in Four Corners.
Serving Four Corners, FL - Our Local Coverage Area
We’re based in the Four Corners 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 Four Corners
Because Four Corners was built out mostly in the 2000s and 2010s for the Disney-area rental market, nearly every home here is a first-generation duct system still under 20 years old – so duct sealing problems show up as builder-era install defects rather than age-related decay. Disconnected flex collars, unsealed plenum joints, and oversized runs are common handover issues we find in homes less than five years old. Call (361) 326-5060 for an inspection; estimates are free.
Yes, recurring musty odors after cleaning almost always indicate unsealed joints pulling humid attic air into the system. Four Corners’s tropical humidity and year-round short-cycle rental operation keep ducts cool and damp, so mold regrows within weeks if the moisture source isn’t sealed. We locate the leaks, seal with mastic, and verify with pressure testing. Call (361) 326-5060 to stop the cycle.
Yes, we regularly seal multi-handler systems in Four Corners vacation villas and townhomes. Each air handler is priced as a separate system with one flat written price per unit, and we coordinate with property managers to minimize rental downtime. Call (361) 326-5060 to schedule around your turnover calendar.
We pressurize the system and use smoke pencil testing combined with infrared cameras to locate temperature differentials at leak points. For buried runs, we inspect accessible sections and use static pressure measurements to identify restriction or loss zones that indicate hidden disconnections. Call (361) 326-5060 to discuss access options for your specific attic layout.
Yes, sealing reduces the humid outside air that enters the system, which lowers the latent load your air conditioner must remove and can reduce runtime. In Four Corners’s climate, where HVAC operates year-round, that efficiency improvement is steady rather than seasonal. The mold prevention benefit is usually the more immediate concern for homeowners. Call (361) 326-5060 for a free estimate on your system.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Four Corners since 2004.