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 Lockhart
Duct sealing in Lockhart, FL typically runs $450 – $1,200 for a whole-home system, with most jobs completed in a single visit after a written price is agreed on site. We serve Lockhart from our Miami-area dispatch office, with crews routing through Orange County regularly to handle the mobile home parks off Lake Ruth Drive and the older site-built neighborhoods near the Lockhart community center. If your vents blow weak, your rooms heat unevenly, or your power bill climbs without explanation, the problem is often leaks in the ductwork itself, not the HVAC unit. Call (361) 326-5060 for a free estimate and written quote before any work starts.
Why Hollis Air Duct Cleaning Is Lockhart’s Preferred Duct Sealing Company
We’ve been part of the Garrison Partners family since 2004, and our Duct Sealing in Lockhart crew knows the difference between a mobile home belly-board failure and a disconnected metal trunk line in a 1970s ranch. That matters here. Lockhart’s housing stock is not Orlando’s concrete-slab suburbia, and treating it like it is wastes money and leaves the real leak untouched.
Our technicians arrive uniformed, background-checked, and inside the quoted window. The price is written down before any tool comes out of the van. Every repair carries our 365-Day Done Right Promise: if the seal fails, the duct sags again, or the musty smell returns within a year, we come back and make it right at no charge, including a free second visit. Phones are answered by a live person 24 hours a day, seven days a week. No voicemail loops. No callback queues.
Duct Insulation in Lockhart
Duct Insulation in Lockhart addresses a problem most homeowners don’t see until it’s already costing them: the fiberglass sleeve around flex duct that has absorbed moisture, collapsed, or been torn apart by rodents in the crawl space or belly board cavity. In Lockhart’s humid subtropical climate, insulation that sits against groundwater or wicks rain through a belly-board tear becomes a mold factory, not a thermal barrier. We remove the damaged wrap, replace it with new R-6 or R-8 flex with intact vapor barrier, then seal the collar and boot connections with mastic and mesh so the conditioned air stays inside the duct where it belongs.
Most Lockhart mobile homes need this work every 10 – 15 years, sooner if the belly board has been compromised. Site-built homes from the 1960s through 1980s often have original insulation that has settled, torn, or been disturbed by prior service work. A typical Duct Insulation job in Lockhart runs $350 – $800 depending on linear footage and access.
When Insulation Can’t Be Saved
Sometimes the flex itself is intact but the insulation sleeve is saturated. We don’t tape over wet fiberglass. The correct fix is replacement of the affected section, sealed properly at both ends, so the vapor barrier faces outward and the R-value is restored.
Vapor Barrier Integrity
Florida humidity will find any gap. We inspect every seam in the insulation jacket, especially at register boots where the flex meets the floor or ceiling. A gap the size of a quarter can dump enough moisture into an attic or belly cavity to support mold growth within a single cooling season.
HVAC Duct Sealing in Lockhart
HVAC Duct Sealing in Lockhart is the mechanical closure of leaks, gaps, and disconnected joints in the duct distribution system, using mastic compound, fiberglass mesh tape, and mechanical fasteners where the original connection has failed. This is not duct tape. Mastic is a water-based sealant that remains flexible, rated for temperature cycling, and applied with a brush or glove over mesh that bridges gaps up to a quarter-inch. For larger separations, we re-secure the joint with sheet-metal screws or strap, then seal over the repair.
Lockhart’s older site-built homes often have original galvanized metal trunk lines with joints that have worked loose from decades of thermal expansion and vibration. Mobile homes present a different challenge: flex trunk lines that sag, crush, or pull free of the air handler collar. HVAC Duct Sealing in Lockhart addresses both, but only after camera inspection tells us which failure mode we’re actually dealing with. Typical sealing work runs $450 – $1,200 for a whole-home system, with simpler single-zone mobile home repairs at the lower end and multi-zone site-built homes with attic access issues toward the upper range.
Metal Duct Restoration
Original metal ducts in Lockhart’s 1960s and 1970s homes can be saved if the metal itself is sound. We brush or vacuum the interior, re-secure loose joints with proper fasteners, then seal every longitudinal seam and transverse joint with mastic and mesh. The result is a system that tests tight and delivers balanced airflow to every room.
Flex Duct Re-Support
Sagging flex is a restriction that no amount of sealing fixes. We re-hang runs to manufacturer-specified slope, replace crushed sections, and seal the new connections. The blower motor works less. The rooms get more air. The power bill drops.
Trusted Brands We Service in Lockhart
Our Duct Sealing vans carry mastic, mesh, and replacement flex from Abatement Technologies and Guardsman, with filtration upgrades from Aprilaire available when we’re already in the system. We don’t run to the supply house mid-job. For Lockhart homeowners, that means the work finishes the same day, with materials rated for Florida’s humidity and temperature swings, not hardware-store tape that turns to powder in eighteen months. If your system needs a filtration upgrade while we’re sealing, we stock Aprilaire media cabinets and Guardsman UV options that install at the air handler without modifying the cabinet.
Common Duct Sealing Problems We See in Lockhart Homes
- Belly-board moisture wicking into flex runs. In Lockhart’s mobile home parks, groundwater and heavy rain penetrate torn belly board and saturate the insulation around flex duct. The homeowner smells mustiness, the system loses efficiency, and simply sealing the visible joints leaves the real leak untouched. We replace the damaged flex and repair the belly board first.
- Disconnected joints buried under attic insulation. In older site-built homes near the Lockhart community center, original metal trunk lines have joints that separated decades ago and were hidden by blown-in insulation. The attic stays hot, the house stays cool enough to keep the thermostat satisfied, but the system runs twice as long as it should. Camera inspection finds what visual inspection misses.
- Crushed flex runs painted with mastic instead of re-supported. We’ve found this in mobile homes off Lake Ruth Drive: a previous service flattened a sagging flex run, painted mastic over the crush point, and called it sealed. The restriction remained. The blower motor strained. We cut out the crushed section, re-hang the run properly, and seal new connections that actually move air.
- Register boots pulling free of floor or ceiling. In both mobile and site-built Lockhart homes, thermal cycling and house settling loosen the connection between duct and register. Conditioned air dumps into the attic or belly cavity instead of the room. We secure the boot with mechanical fasteners, seal with mastic, and verify airflow at the register face.
Pricing for Duct Sealing in Lockhart, FL
A typical whole-home duct sealing in Lockhart runs $450 – $1,200. Single-zone mobile home repairs with limited access start around $350. Multi-zone site-built homes with attic work, multiple disconnected joints, or partial flex replacement range toward $1,200. What moves the price: linear footage of duct, accessibility (crawl space, attic, or belly board), whether we’re sealing existing sound duct or replacing damaged sections first, and whether camera inspection reveals hidden disconnects that weren’t visible from the registers.
We give one flat price per system, agreed in writing before any work begins. No per-vent pricing. No add-ons at the door. The quote includes all materials, labor, and the 365-Day Done Right Promise. If you’re comparing quotes, ask whether the other company prices by the vent or by the system. Per-vent pricing almost always balloons once the technician is inside. Call (361) 326-5060 for a free estimate.
We Also Serve Cities Near Lockhart
Our crews route through Orange County from the Miami office, with regular service to Jacksonville, Miami, Tampa, and Orlando metro areas. If you know someone in one of those cities with the same duct problems, we handle them the same way: written price first, sealed by the book, backed for a full year.
Serving Lockhart, FL - Our Local Coverage Area
We’re based in the Lockhart 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 Lockhart
Cleaning removes debris; sealing fixes the leaks that let debris in and conditioned air out. In Lockhart’s 1960s – 1990s housing stock, we frequently find that the real problem is a disconnected joint or crushed flex run, not just dust accumulation. Sealing after cleaning ensures the system stays clean and efficient. Call (361) 326-5060 for an inspection that tells you which your home actually needs.
Moisture-damaged flex, sagging runs that have pulled free of the collar, and rodent nesting in belly board cavities. In the mobile home section off Lake Ruth Drive, we camera-inspected a 1987 single-wide where the homeowner complained of a musty smell every time the air handler kicked on. The flex trunk had sagged free of the belly board, and the run under the bathroom was crushed flat against the frame with rodent nesting pulled out during source removal. After re-hanging the sag, replacing the crushed section, and sealing the collar and register boots with mesh and mastic, the system held pressure and the return-side mustiness cleared.
Yes, if the metal is structurally sound. We brush or vacuum the interior, re-secure loose joints with sheet-metal screws, and seal all seams with mastic and mesh. Original metal ducts in Lockhart’s older homes often outlast flex if the joints are maintained. Camera inspection tells us whether the metal has corroded through or the joints are simply loose. Call (361) 326-5060 to schedule.
It helps significantly. Leaky return ducts pull humid attic or belly-cavity air directly into the system, raising indoor humidity and promoting mildew growth on coils and in ducts. Sealing the return side, especially in Lockhart’s humid subtropical climate, reduces the moisture load the system must handle. We often see indoor humidity drop 5 – 10% after proper sealing.
We pressure-test the system before and after, measuring static pressure and airflow at the air handler and at representative registers. The 365-Day Done Right Promise covers any seal failure within a year: if pressure drops or symptoms return, we come back at no charge, including a free second visit. You also get before-and-after photos of the work we performed. Call (361) 326-5060 to schedule your free estimate.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Lockhart since 2004 as part of the Garrison Partners family.