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.
Fast, Reliable Duct Sealing Across Maitland
Duct sealing in Maitland typically runs $450 – $1,200 for a whole-home seal, depending on how much of the system we need to open and whether we’re working in a damp crawlspace or accessible attic. Most Maitland jobs take a half day, and we price them in writing before any work starts. Call (361) 326-5060 for a free estimate.
We’ve worked the ranch homes off Lake Sybelia, the streets near Maitland City Centre, and the older neighborhoods along 17-92 long enough to know what hides in these ducts. Maitland’s heavy tree canopy and high water table keep outdoor humidity high and organic debris in constant supply, so air duct issues here are less about dust and more about mold spore, pollen, and pest intrusion control. With so many 1950s – 70s ranch homes near the lakes, duct systems often sit in damp crawlspaces and draw in spores from the surrounding oak and cypress leaf litter. That’s why our Duct Sealing team doesn’t just vacuum; we find the leaks that let that damp, contaminated air into your living space, and we seal them at the source.
Dispatch and scheduling for Maitland are coordinated from our Miami office, but the crews that arrive at your door live and work in Central Florida. They know the difference between a Maitland crawlspace in July and one in January, which is to say: there isn’t one. Both are wet. Both breed mold. Both punish ductwork that isn’t sealed tight.
Why Hollis Air Duct Cleaning Is Maitland’s Preferred Duct Sealing Company
Hollis Air Duct Cleaning has been part of the Garrison Partners family since 2004. The Garrison Standard means written prices, written guarantees, and technicians who arrive inside the quoted window, in uniform, with background checks already done. We’ve earned our reputation in Maitland by showing up when we said we would and leaving the site clean.
Our 365-Day Done Right Promise covers every duct sealing job in writing. If the seal fails within a year, we come back at no charge, including a free second visit. No negotiation, no runaround. The price is written down before any work starts, and it does not move at the door.
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 serve Maitland homeowners who’ve been burned by no-shows, prices that jumped once the van was in the driveway, or crews who left a mess and disappeared. Our customers aren’t shopping for the cheapest bid; they’re shopping for the bid they can trust.
Duct Sealing Services in Maitland
Duct Sealing Services in Maitland address the leaks, gaps, and disconnected runs that let conditioned air escape into attics, crawlspaces, and wall cavities. In a typical Maitland ranch home, we find 20 – 30% of cooled air never reaches the rooms it’s supposed to serve. That waste shows up on your FPL bill every month. A whole-home duct seal in Maitland generally costs $450 – $1,200, with simpler attic-access jobs at the lower end and full crawlspace restoration at the higher end.
Leak Detection and Sealing
We pressurize the system and use smoke pencils and thermal cameras to find every leak, not just the obvious ones. In Maitland’s older homes, we regularly find crushed trunk takeoffs behind registers and boot-to-floor gaps that have been leaking for decades. Each location is sealed with mastic and mesh or UL 181 tape, depending on the joint type and whether we need flexibility or rigidity.

Crawlspace Duct Restoration
Maitland’s lakefront neighborhoods like the Loch Gates streets off Lake Sybelia have original 1950s – 70s ranch ducts running through vented crawlspaces with sandy, high-water-table soil. Runs disconnected by age, root movement, or previous HVAC swaps lose conditioned air and siphon damp, spore-laden crawlspace air into the living space. We reattach, support, and seal these runs, then verify with post-repair pressure testing.

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 Maitland
Duct Insulation in Maitland prevents condensation and thermal loss in the unconditioned spaces where most local ductwork lives. In Maitland’s humid subtropical climate, the AC runs almost year-round, and ducts rarely get a dry-out season. Uninsulated or poorly insulated ducts sweat in crawlspaces and attics, dripping moisture onto insulation, framing, and finished ceilings below. A typical duct insulation job in Maitland runs $600 – $1,800, depending on linear footage and whether we’re wrapping existing sealed ducts or replacing water-damaged insulation after a leak repair.
Vapor-Barrier Wrapping
We use closed-cell insulation with a sealed vapor barrier on duct runs in Maitland’s damp crawlspaces. This stops the sweating that feeds mold growth and weakens the mastic seals we just applied. The wrapping is taped at every seam, not just the main run, because partial sealing is how moisture finds its way in.
Attic Duct Insulation Replacement
Maitland’s summer attic temperatures regularly exceed 130°F. Ducts running through that space without proper insulation lose efficiency fast. We replace compressed or water-damaged fiberglass with R-8 or higher flex duct insulation, sealed and supported to prevent sagging that creates new low points for condensation to collect.
Trusted Brands We Service in Maitland
Our equipment roster includes Rotobrush rotary brush systems for agitation and source removal, Nikro negative-air machines for controlled containment during crawlspace work, and filtration and sealing products from Honeywell, Aprilaire, Abatement Technologies, and Guardsman. We stock mastic, UL 181 tape, and replacement boots and collars for the common duct sizes found in Maitland’s 1950s – 70s housing stock, so most jobs don’t wait on parts. When we find a crushed takeoff or rotted flex duct on a Lake Minnehaha-area ranch, we can usually repair it same visit rather than scheduling a return trip.
Common Duct Sealing Problems We See in Maitland Homes
- Disconnected or crushed duct runs in damp crawlspaces near Lakes Maitland, Sybelia, and Minnehaha pull in soil moisture and spores after decades of settling, root movement, and previous HVAC replacements. We find these with camera inspection, then reattach and seal with mastic and mesh.
- Original 1950s – 70s metal trunk lines and coated flex ducts develop pinhole leaks and failing mastic at joints, so the system leaks cooled air into unconditioned attics and low crawlspaces. The homeowner notices rooms that never cool evenly and a system that runs constantly.
- Hurricane-season power outages leave standing condensate in older duct runs that rarely dry out in Maitland’s humid subtropical climate, feeding mold growth that weakens duct lining and sealant adhesion. We inspect for this damage during every sealing job and replace compromised material before sealing.
- Boot-to-floor gaps behind supply registers are nearly universal in Maitland’s older ranch homes. These gaps dump conditioned air into wall cavities and draw in crawlspace air through negative pressure. Sealing them is quick, but finding them requires systematic pressure testing most homeowners never get.
Pricing for Duct Sealing in Maitland, FL
Whole-home duct sealing in Maitland runs $450 – $1,200. Here’s how that breaks down:
- Attic-access seal of accessible metal trunk and branch lines: $450 – $700
- Crawlspace seal with limited access, including reattachment of 1 – 2 disconnected runs: $700 – $950
- Full restoration with multiple disconnected runs, crushed takeoff replacement, and plenum reseal: $950 – $1,200
- Duct insulation wrapping (per linear foot, after sealing): $600 – $1,800 typical whole-home
What moves the price: access conditions (crawlspace height, attic hatch location), number of disconnected or damaged runs we find, whether insulation replacement is needed, and whether the plenum or air handler cabinet also needs sealing. We inspect first, price in writing, and start work only after you approve the exact figure. No per-vent pricing, no teaser coupons that balloon at the door. Call (361) 326-5060 for a free estimate.
We Also Serve Cities Near Maitland
Our crews work throughout Orange and Seminole Counties, including Winter Park, Altamonte Springs, Casselberry, and Orlando. Each job gets the same written price, the same 365-Day Done Right Promise, and the same background-checked, uniformed technicians.
Serving Maitland, FL - Our Local Coverage Area
We’re based in the Maitland 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 Maitland
Because the real problem in most Maitland ranch homes is leaks, not dirt. Disconnected runs and crushed takeoffs in damp crawlspaces pull in mold spores and humidity; cleaning the duct interior doesn’t stop that infiltration. Sealing the leaks does. On a Lakes Maitland-area ranch with a 1972 air handler, our tech used camera inspection and agitation tools under negative pressure to find a crushed trunk takeoff and two boot-to-floor gaps hidden behind registers. After source removal, we sealed the takeoff with mastic and mesh, reattached the boots, and sealed the plenum with UL 181 tape; the homeowner noticed the bedrooms finally stayed cool without the system running constantly. A week later, we reinspected and confirmed the crawlspace runs held seal with no measurable leakage at the repaired joints. Call (361) 326-5060 if you’re not sure whether your home needs sealing, cleaning, or both.
We pressurize the system and measure airflow at each register, then use a borescope camera in the crawlspace to trace the duct path and identify where the run separates from the trunk or collapses against the ground. In Maitland’s sandy, high-water-table crawlspaces, disconnected runs often sit in standing water or damp soil, so we also note moisture conditions that will affect how we seal and support the repair. Call (361) 326-5060 to schedule an inspection.
Yes. Constant humidity keeps mastic and tape adhesives under stress, and condensation in unconditioned spaces can reactivate mold that degrades seals from the outside. That’s why we use closed-cell insulation with vapor barriers on crawlspace repairs and specify mastic rated for wet locations. The 365-Day Done Right Promise covers seal failure regardless of cause; if it doesn’t hold, we return and make it right at no charge, including a free second visit. Call (361) 326-5060 with concerns about your specific crawlspace conditions.
It can, if the mold and odor are coming from damp crawlspace air pulled in through leaks. Sealing stops that infiltration. If mold has already colonized the duct interior, we recommend source removal cleaning first, then sealing to prevent reinfection. In Maitland’s lakefront neighborhoods, we often do both: clean the biological contamination, then seal the entry points. Call (361) 326-5060 and we’ll inspect to determine which approach fits your home.
We seal with mastic and mesh, UL 181 tape, and mechanical fasteners from Guardsman and Abatement Technologies, using Rotobrush agitation tools and Nikro negative-air containment during any pre-seal cleaning. Our technicians carry the common boot sizes and collar fittings for Maitland’s vintage housing stock, so repairs don’t wait on parts. Call (361) 326-5060 for specifics on your job.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Maitland since 2004.




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