Duct Sealing in Charlotte - Tested First, Written Price Second

Fast, Reliable Duct Sealing Across Charlotte

Your ducts are leaking. Maybe you’ve noticed the upstairs bedroom in your south Charlotte home never cools below 78 in July, or your energy bill jumped $80 last summer with no explanation. Duct sealing in Charlotte typically runs $450 – $1,200 for a whole-home seal, and most jobs finish in a single visit. Call (361) 326-5060 and we’ll give you a written price before any work starts.

Call (361) 326-5060

We’re Hollis Air Duct Cleaning, part of the Garrison Partners family, and our Charlotte office dispatches crews across Mecklenburg County every day. Roy Castellanos and our team know the local housing stock: the flex-duct attics in Ballantyne, the original metal runs in Plaza Midwood bungalows, the builder-grade systems in new-construction homes up toward Lake Norman. Charlotte’s humid subtropical climate and heavy pollen loads create conditions you won’t find in drier markets, and that matters when we’re deciding whether your ducts need sealing, repair, or full replacement. Our Duct Sealing team arrives inside the quoted window, prices in writing, and leaves the site clean. That’s The Garrison Standard.

Why Hollis Air Duct Cleaning Is Charlotte’s Preferred Duct Sealing Company

We’ve been in business since 2004, and the Garrison Partners family has outlasted most of the fly-by-night outfits that advertise cheap duct cleaning in Charlotte and vanish when callbacks come. Our 365-Day Done Right Promise covers every seal and repair in writing: if the work fails within a year, we return and make it right at no charge, including a free second visit. No negotiation, no runaround.

Our technicians are background-checked and uniformed. You know who’s walking into your home before they arrive. And when you call (361) 326-5060, a live person answers, 24 hours a day, seven days a week. No voicemail loops, no callback queues, no waiting until Monday because your ducts failed on a Saturday evening.

We price every job in writing before touching your system. The number on the page is the number at the door. We’ve heard too many stories from Charlotte homeowners about teaser quotes that ballooned once the crew was inside. That doesn’t happen here. Roy Castellanos built this operation on the principle that a written price is a promise, not a starting bid.

Our equipment roster includes Rotobrush rotary brush systems, Nikro negative-air machines, and sealing products from Guardsman and Abatement Technologies. These are the same tools commercial crews use on hospitals and schools, not hardware-store gear. We explain what each piece does and why it matters for the air moving through your Charlotte home.

HVAC Duct Sealing in Charlotte

HVAC Duct Sealing in Charlotte addresses the conditioned air escaping through gaps, disconnected joints, and deteriorating seams in your ductwork before it ever reaches your rooms. In this market, we typically seal systems in homes where 20 – 30% of heated or cooled air leaks into attics, crawlspaces, or wall cavities, costing homeowners hundreds in wasted energy each year. A whole-home duct sealing in Charlotte generally runs $450 – $1,200 depending on system size, accessibility, and whether we’re working with flexible duct in an unconditioned attic or original metal runs in an older bungalow.

When Sealing Beats Replacement

Not every leaky duct needs tearing out. In newer subdivisions around Matthews or Mint Hill, we often find flexible ductwork that’s structurally sound but poorly connected at the plenum. A proper seal with mastic and mechanical fasteners restores efficiency without the cost of full replacement. We’ll tell you honestly which path makes sense after we inspect your system.

The Mastic Method

We seal joints with duct mastic, a thick, fiber-reinforced compound that remains flexible after curing. Unlike foil tape, which degrades in Charlotte’s attic heat within a few seasons, mastic withstands temperature swings and vibration. Our crews apply it to every seam, collar, and connection point, then verify the seal with a pressure test before we leave.

Duct Repair in Charlotte

Duct Repair in Charlotte fixes the physical damage that sealing alone cannot address: crushed flex duct, corroded metal trunks, water-damaged ductboard, and disconnected runs that have pulled apart under years of vibration. We see this most often in 1980s – 2000s subdivisions where flexible ductwork in hot attics has degraded, and in east Charlotte’s 1970s ranch homes where original ductboard trunks harbor hidden mold behind peeling interior liners. Duct repair in Charlotte typically costs $300 – $800 per section, with full trunk replacement running $1,000 – $2,500 depending on material and access.

Attic Duct Damage

Charlotte’s combination of extreme attic heat and high humidity destroys flex duct from the outside in. The outer insulation jacket separates from the inner liner, creating pockets where condensation collects and mold takes hold. We remove the damaged section, inspect the surrounding run for secondary issues, and install new flex or rigid metal as appropriate.

Crawlspace and Lower-Level Repairs

In neighborhoods near the Catawba River and Lake Norman, elevated soil moisture rusts metal duct components and saturates ductboard. We replace corroded trunks with galvanized or aluminum options rated for damp environments, and we seal all connections to prevent humid outside air from entering the system.

Trusted Brands We Service in Charlotte

Hollis crews work with professional-grade equipment from Rotobrush, Nikro, Abatement Technologies, and Guardsman, and we stock sealing compounds, fasteners, and replacement duct sections sized for the systems we encounter most often in Charlotte homes. That means faster turnaround on repairs and no waiting for parts shipments while your AC struggles through another 95-degree July week. Whether your system uses standard flex, rigid metal, or fiberboard trunk lines, we carry the materials to fix it right the first time. We also handle Air Duct Cleaning in Charlotte and Dryer Vent Cleaning in Charlotte, so one call covers your full ventilation system.

Common Duct Sealing Problems We See in Charlotte Homes

• Pollen-saturated return leaks. Charlotte’s oak, pine, and sweetgum pollen ranks among the highest seasonal counts in the country. When return ducts pull air through gaps in crawlspaces or wall cavities, they draw in unfiltered pollen that coats your evaporator coil and circulates through every room.
• Red clay dust infiltration. The Piedmont’s red clay soil turns to fine dust during dry spells, and that dust enters duct systems through leaks near the air handler. We find it caked inside ducts in south Charlotte homes built on clay-heavy lots, reducing airflow and triggering filter overload.
• Attic humidity and mold in flex duct. Charlotte’s humid subtropical climate means attics regularly exceed 130°F in summer with humidity to match. Flexible duct insulation breaks down, the vapor barrier fails, and mold colonizes the inner liner, a pattern we see repeatedly in Ballantyne and Steele Creek subdivisions.
• Undersized metal runs in older neighborhoods. Plaza Midwood and NoDa bungalows often have 1920s – 1950s metal ductwork that was barely adequate when installed and is now corroded, leaky, and incompatible with modern HVAC loads. Sealing helps, but we always assess whether the underlying system can handle today’s demand.

Pricing for Duct Sealing in Charlotte, NC

We Also Serve Cities Near Charlotte

Our Charlotte office dispatches crews throughout Mecklenburg County and into surrounding communities. If you’re in Matthews, Mint Hill, Huntersville, Cornelius, or Pineville, the same crew that handles Duct Sealing in Charlotte covers your area with the same written pricing and 365-Day Done Right Promise.

FAQs About Duct Sealing in Charlotte