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 Alpharetta
We dispatch to Alpharetta from our Atlanta scheduling office, and most calls get a crew on the road inside an hour. If you’re in Windward, Avalon, or off Haynes Bridge Road, we’ve already worked on homes on your street. Alpharetta’s building boom has produced two very different duct problems: 1990s subdivisions with flex duct hitting its expiration date, and brand-new builds where construction debris still circulates through poorly sealed joints. Both need attention, but for different reasons. Call (361) 326-5060 and we’ll send a uniformed tech who knows which problem your neighborhood has.
Why Hollis Air Duct Cleaning Is Alpharetta’s Preferred Duct Sealing Company
We’ve been sealing ducts in Alpharetta since before the GA-400 corridor filled with tech offices. Homeowners here know us because we show up inside the window, price the job in writing before touching anything, and leave the site clean. The Garrison Standard applies to every Alpharetta job: background-checked technicians, professional-grade equipment, and a 365-Day Done Right Promise backed in writing. If our seal fails within a year, we come back and make it right at no charge, including a free second visit. No negotiation, no runaround. Our phones are answered by a live person 24 hours a day, 7 days a week, so you’re never stuck in a callback queue when your HVAC is blowing attic dust through the registers.
Air Duct Sealing in Alpharetta
Air Duct Sealing in Alpharetta means closing the gaps, joints, and seams in your forced-air system so conditioned air reaches the rooms it’s supposed to, not your attic or crawl space. The typical Alpharetta home loses 20-30% of heated or cooled air through duct leaks, which in this market translates to hundreds of dollars per year in wasted utility spending. Our Duct Sealing team uses mastic compound and fiberglass mesh on metal ducts, and specialized tape rated for temperature cycling on flex runs. We verify every seal with a manometer reading before we leave.
Alpharetta’s climate makes leaky ducts especially costly. Your system runs almost year-round between cooling-heavy summers and shoulder-season pollen filtration. Every cubic foot of conditioned air that escapes into the attic is air your compressor worked to create. In newer subdivisions near Avalon or Windward, we’ve found builder-grade pressure tape drying out within 18 months, leaving gaps that pull attic insulation and drywall dust straight into your living space.
Sealing New Construction Ductwork
New Alpharetta builds often need sealing sooner than 20-year-old homes. Construction debris left in ducts at handover circulates through loose joints, and sealed mechanical closets trap heat that degrades tape adhesive faster than open garages or vented attics.
Retrofitting Older Subdivision Systems
Homes built in the 1990s and 2000s in neighborhoods like Country Club of the South or Crooked Creek use flex duct that sags and separates at the plenum. We remove degraded material, install proper supports, and seal with mastic rated for Alpharetta’s humidity range.
Duct Sealing Services in Alpharetta
Duct Sealing Services in Alpharetta cover everything from spot repair of disconnected flex runs to full-system sealing after camera inspection. We serve Alpharetta homeowners with both scheduled maintenance sealing and post-construction cleanup where builders left the job unfinished. Our process starts with a written price before work begins, and we don’t move that number at the door. Typical duct sealing in Alpharetta runs $450-$1,200 for a whole-home system, depending on accessibility, duct material, and whether we need to cut access panels into sealed mechanical closets.
We were called to a two-year-old home in Windward after the owner kept finding drywall dust on the registers and a metallic rattle from the air handler. Camera inspection showed the builder’s flex supply duct runs were pressure-taped but never sealed at the plenum, and return ducts were pulling construction dust straight back through the blower motor. After source removal and negative pressure containment, our tech sealed every joint with mastic and mesh, then verified the static pressure drop with a manometer before the owner’s first spring pollen season.
Mechanical Closet Access Solutions
In many Alpharetta HOA subdivisions, air handlers and duct chases serving newly built homes are tucked into sealed second-floor mechanical closets with no service panel. Duct sealing here often means cutting a code-compliant access before any mastic or tape can go on. Something a neighboring city’s older or side-yard vented homes rarely require.
Post-Construction Debris Removal
Builders’ final cleanings rarely touch the duct interior. We find drywall chunks, wood shavings, and discarded tape wrappers in new Alpharetta homes. Our Nikro negative-air machines contain this debris during extraction so it doesn’t redeposit in your bedrooms.
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.
Trusted Brands We Service in Alpharetta
We stock parts and filtration products from Honeywell, Aprilaire, and Abatement Technologies for Alpharetta customers, which means faster turnaround when your system needs compatible components after sealing work. Honeywell media filters and Aprilaire humidifier pads integrate cleanly with sealed duct systems, maintaining the pressure balance we establish. Abatement Technologies HEPA filtration works with our containment setups during construction-debris cleanup. We don’t have to order from a warehouse three counties away. The right part is already on the van, and the technician knows how it fits with the mastic and mesh we just applied to your plenum joints.
Common Duct Sealing Problems We See in Alpharetta Homes
- Builder-grade tape failure in new subdivisions. Pressure tape on duct joints in homes near Avalon or along Westside Parkway dries within 12-18 months. Gaps open at the plenum and flex connections, pulling attic insulation into your supply air.
- Sealed mechanical closet heat damage. Second-floor closets with no ventilation trap heat and humidity around the air handler. Mastic softens, tape adhesive fails, and flexible duct inner liners sweat and mold.
- Roof-terminated dryer vent seal failure. Alpharetta HOAs often require roof terminations, creating long vent runs where tape-and-mastic seals fail first. A small leak becomes a lint clog, then a dryer fire risk.
- 1990s flex duct sag and separation. Original ductwork in Country Club of the South and similar neighborhoods has lost tension support. Sagging creates low points where condensation pools and biological growth starts.
Pricing for Duct Sealing in Alpharetta, GA
Whole-home duct sealing in Alpharetta typically runs $450-$1,200. Spot repairs on accessible flex runs start around $180-$340. Full-system sealing with access panel cutting for sealed mechanical closets falls at the higher end. What moves the number: whether we can reach all joints from existing openings, how much degraded tape and failed mastic needs removal before resealing, and whether your system requires post-seal pressure balancing. We give you one flat price per system, agreed in writing before work starts. No per-vent pricing, no add-ons at the door. Call (361) 326-5060 for a free estimate with exact numbers for your home.
We Also Serve Cities Near Alpharetta
Our crews work throughout the northern metro, including Duct Sealing in Alpharetta and surrounding communities: Roswell, Duluth, Woodstock, and Holly Springs. Same written pricing, same 365-Day Done Right Promise, same live-answer phones.
Serving Alpharetta, GA - Our Local Coverage Area
We’re based in the Alpharetta 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 Alpharetta
Builder-grade pressure tape dries out faster than homeowners expect, especially in Alpharetta’s heat-trapping mechanical closets. We’ve resealed two-year-old homes in Windward and Avalon where the original tape was already failing. Call (361) 326-5060 for a camera inspection to check your plenum joints.
We cut a code-compliant access panel into the closet wall or ceiling, perform the sealing work, then close and finish the opening to HOA standards. This is standard practice in Alpharetta’s newer subdivisions. The access allows future maintenance without repeated drywall cutting.
Yes. Sealed return ducts stop pulling unfiltered attic air, which in Alpharetta carries oak and pine pollen straight into your blower. Sealed supply ducts maintain proper pressure so your Honeywell or Aprilaire filtration system works at rated efficiency instead of compensating for leaks.
1990s homes typically need flex duct replacement or retensioning before sealing; the material itself has degraded. New builds need construction debris removal and proper mastic application where builders used tape alone. The diagnostic approach differs, and we price accordingly after inspection.
Duct sealing and Alpharetta Dryer Vent Cleaning are separate systems, but we often address both in the same visit. Roof-terminated dryer vents in Alpharetta HOAs require specific lint-clearing tools and proper roof-penetration sealing. Ask about bundling when you call (361) 326-5060 for your estimate.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Alpharetta since 2004.