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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Before
AfterFast, Reliable Duct Sealing Across Mascotte
Duct sealing in Mascotte typically runs $400 – $900 for a whole-home system, and most jobs are completed in a single visit with the price written down before we start. If your vents blow weak, your rooms heat unevenly, or your energy bills keep climbing, the problem is often gaps and disconnected joints in the ductwork, not the HVAC unit itself.
We’ve worked in Mascotte’s newer subdivisions off SR 50 and CR 33, the older ranch homes near the original town core, and the manufactured housing communities that dot Lake County. Our crews dispatch from our Miami office and schedule Mascotte jobs with arrival windows we actually keep. When you call (361) 326-5060, a live person answers, 24 hours a day. No voicemail loops. No callback queues.
Why Hollis Air Duct Cleaning Is Mascotte’s Preferred Duct Sealing Company
Hollis has been part of the Garrison Partners family since 2004. That track record predates most of the subdivisions we now service in Mascotte. Homeowners here know us because we show up uniformed, background-checked, and ready to explain what we find before we quote a price.
Our Duct Sealing in Mascotte crews follow The Garrison Standard: arrive inside the quoted window, price in writing before any work starts, complete the job by the book, and leave the site clean. The 365-Day Done Right Promise covers every repair. If the work fails within a year, we return and make it right at no charge, including a free second visit. That guarantee is backed in writing on every job, not offered as a verbal afterthought.
We answer calls live around the clock because duct problems don’t wait for business hours. And because each Hollis location is independently owned and operated, the crew serving Mascotte answers to local accountability, not a distant corporate desk.
Duct Sealing Services in Mascotte
Duct Sealing Services in Mascotte address the gaps, disconnected joints, and crushed runs that waste conditioned air and strain your HVAC system. In our market, this work runs $400 – $900 for a typical single-family home, depending on accessibility and the extent of damage. We see two distinct scenarios: new subdivisions with builder-grade flex duct that was never properly sealed after construction, and older homes with decades of sealant failure.
Leak Detection and Mastic Sealing
We pressurize the duct system and use smoke pencils or thermal imaging to locate leaks. Then we seal joints with mastic, a water-based sealant that remains flexible and won’t crack like old tape. In Mascotte’s humid climate, flexible sealant matters. Rigid tapes fail when condensation cycles expand and contract the metal.
Flex Duct Repair and Replacement
Crushed or kinked flex duct gets replaced with properly supported runs. We see this constantly in Mascotte’s newer homes, where tight attic spaces force sharp bends that choke airflow. The blower motor works harder, wears faster, and your utility bill climbs. Fixing the duct geometry solves the root problem.
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 Mascotte
Duct Insulation in Mascotte protects against the condensation that forms when 55-degree conditioned air moves through 95-degree attic spaces. In our humid subtropical climate, uninsulated or poorly insulated ducts sweat. That moisture breeds mold, degrades surrounding insulation, and can damage ceiling drywall. Typical duct insulation work in Mascotte runs $300 – $700, depending on linear footage and attic accessibility.
Vapor Barrier Restoration
Existing insulation often has torn or missing vapor barriers. We wrap ducts with new insulation jacketing that includes an intact vapor barrier, sealed at seams with proper tape. This stops the condensation cycle that ruins R-value and creates musty odors.
Attic Insulation Coordination
Where attic insulation has been disturbed by prior service work, we coordinate with insulation crews to restore thermal boundaries. Duct insulation works best when the attic itself is properly sealed. We flag these issues during our inspection and include them in the written quote.
Trusted Brands We Service in Mascotte
Our Duct Sealing crews carry professional-grade equipment from Nikro and Abatement Technologies, and we stock filtration and sealing products from Honeywell and Aprilaire for Mascotte jobs. That means no waiting on parts shipped from out of state. If your system needs a specific collar, damper, or sealant compatible with your existing hardware, we likely have it on the van. The same tools and materials commercial crews use on hospitals and schools are what we bring to your home off CR 33 or SR 50.
Common Duct Sealing Problems We See in Mascotte Homes
- Builder-grade flex duct crushed at tight bends. In Mascotte’s newer subdivisions, attic framing often forces 90-degree kinks in flex runs. Airflow drops. The blower compensates. Motor life shortens. We replace the damaged section and support it properly.
- Construction debris left in ducts from the build. Drywall dust and sawdust sit in new ductwork until the first humid summer hits. Then it becomes a sticky film that harbors odor and restricts flow. We remove the source, then seal so it doesn’t recur.
- Disconnected joints in original 1970s – 80s ductwork. Mascotte’s older ranch homes and mobile homes often have metal duct with failed tape seals or separated joints. Conditioned air leaks into attics and crawlspaces. Rooms stay hot. Bills stay high.
- Failed seals around air handler connections. The plenum where the air handler meets the duct trunk takes the most vibration and thermal stress. Seals crack first here. We reseal with mastic and mechanical fasteners that won’t shake loose.
Pricing for Duct Sealing in Mascotte, FL
Whole-home duct sealing in Mascotte typically costs $400 – $900. Duct insulation runs $300 – $700. Combined sealing and insulation projects for a full system generally fall between $650 and $1,400. These are honest ranges for our market, not teaser prices that jump once we’re inside.
What moves the price: accessibility (crawlspace vs. walk-in attic), linear footage of duct, extent of damage, and whether we find construction debris requiring source removal before sealing. We inspect first, quote in writing, and the number doesn’t move at the door. Every quote includes the 365-Day Done Right Promise. Call (361) 326-5060 for a free estimate. We’ll give you the exact figure before any work starts.
We Also Serve Cities Near Mascotte
Our crews regularly work in Groveland, Clermont, Minneola, and Leesburg. The same written pricing, same background-checked technicians, same 365-Day Done Right Promise applies across Lake County. If you’re near the Mascotte border in any of these cities, call us. We’ll schedule you from the same dispatch.
Serving Mascotte, FL - Our Local Coverage Area
We’re based in the Mascotte 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 Mascotte
Yes, often you do. In Mascotte’s newer subdivisions around SR 50 and CR 33, builders frequently leave construction debris in ducts and use minimum-code sealing that fails within the first few thermal cycles. We were called to a home off CR 33 where the builder-grade flex duct had never been cleaned after construction. Using a camera inspection, our tech found drywall dust packed into the supply and return ducts and a crushed return run behind the air handler. After source removal with agitation tools under negative pressure, we sealed the disconnected joints and reinsulated the damaged flex – the homeowner’s musty odor was gone and the system ran noticeably quieter. Call (361) 326-5060 for a free inspection if your new home smells stale when the AC runs.
Cleaning removes debris; sealing fixes leaks. If some rooms stay hot while others freeze, if your energy bill is rising despite normal usage, or if you feel weak airflow at vents, you likely have leaks that cleaning won’t fix. We inspect with cameras and pressure tests to show you exactly what’s happening inside the ducts. Call (361) 326-5060 and we’ll diagnose it properly.
Musty odors usually mean moisture is entering the duct system through leaks, or debris inside is harboring mold in Mascotte’s high humidity. In new homes, construction dust turns musty when summer humidity hits. In older homes, attic air and crawlspace moisture leak in through failed seals. Sealing the ducts stops the moisture intrusion. Source removal clears the debris. Call (361) 326-5060 for an inspection.
It helps significantly. Sealed ducts don’t draw unfiltered attic or crawlspace air into your system. In Mascotte, where oak and pine pollen loads are intense in spring, leaky ducts pull that pollen into the airflow path. Once ducts are sealed, your filter handles only the air it’s designed to clean. Your indoor pollen load drops. Call (361) 326-5060 to schedule sealing before next season.
We pressurize the system to locate leaks, then seal joints with mastic, repair or replace crushed flex duct, and reinsulate where vapor barriers have failed. The work typically takes 4 – 6 hours for a single-family home. You get before-and-after photos of your own ducts, a written invoice matching the written quote, and the 365-Day Done Right Promise. Call (361) 326-5060 for a free estimate.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Mascotte since 2004 as part of the Garrison Partners family.