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 The Woodlands
We dispatch to The Woodlands from our Houston coordination office, and most days we’re in Sterling Ridge, Alden Bridge, or Panther Creek within the hour. Our crews know the village system, the long attic runs typical of 1990s – 2010s builds here, and the way pine pollen season hits in March and April. If your upstairs zone won’t hold temperature or your energy bill’s climbing with no explanation, duct sealing is often the fix. Call (361) 326-5060 for a free estimate with a written price before any work starts.
Why Hollis Air Duct Cleaning Is The Woodlands’s Preferred Duct Sealing Company
We’ve worked inside enough homes in The Woodlands to know what the inspectors miss and what the original builders left unfinished. Our Duct Sealing in The Woodlands team handles the multi-zone systems common in villages like Indian Springs and Cochran’s Crossing, where two or three HVAC units serve homes with duct runs stretching 40 feet or more through attic space.
Our technicians are background-checked and uniformed, and they arrive 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 or the problem 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.
HVAC Duct Sealing in The Woodlands
HVAC Duct Sealing in The Woodlands addresses the conditioned air leaking from joints, plenums, and flex connections in homes where duct runs are long, attic temperatures are extreme, and organic debris from the surrounding forest complicates every job. We seal with mastic and reinforced mesh, not tape, because tape degrades in the humidity that never really leaves this market. A typical whole-system seal runs $450 – $850 for a single-zone home; multi-zone homes in The Woodlands usually run $800 – $1,400 depending on access and the condition of the flex runs.
Source Removal Before Sealing
We don’t seal over debris. In The Woodlands’ villages like Sterling Ridge and Alden Bridge, the pine and oak canopy drops needles and pollen sacks directly into return registers and attic flex runs, so our Duct Sealing process always involves source removal of organic debris from the returns before mastic or mesh is applied. We agitate under negative pressure using Nikro equipment, then seal clean surfaces.
Multi-Zone System Balancing
Large Woodlands homes often have three systems. Sealing one zone without checking static pressure across the others can throw off the whole house. We measure before and after, and we document the numbers.
Duct Repair in The Woodlands
Duct Repair in The Woodlands fixes what sealing alone cannot: crushed flex runs from attic heat degradation, disconnected trunk lines in multi-zone 1990s – 2010s builds, and plenum separations where the original builder used tape instead of mechanical fasteners. Repair work runs $300 – $650 for isolated flex replacement or plenum reconnection; extensive rebuilds in large homes with multiple compromised runs can reach $900 – $1,500. We price by the system, not by the foot, so a three-system home knows the full cost before we start.
Crushed Flex Run Replacement
Attic temperatures in The Woodlands regularly exceed 140°F in summer. Flexible ductwork installed in the 1990s and 2000s degrades, collapses, or pulls away from boots. We replace with properly sized flex, support it to prevent sagging, and seal the connections.
Plenum and Air Handler Sealing
The connection between your air handler and the main trunk is a common failure point. We use mastic and mesh at the plenum, mechanical fasteners where code requires them, and we photograph the finished work for your records.
Trusted Brands We Service in The Woodlands
We carry Honeywell and Aprilaire filtration components and stock Abatement Technologies sealing products for The Woodlands jobs. Our vans are loaded with mastic, mesh, and flex duct in common diameters so we’re not making supply runs while your attic is open. Most repairs finish in one visit. If your system uses a specific brand of air handler or zoning panel, we verify compatibility before we arrive.
Common Duct Sealing Problems We See in The Woodlands Homes
- Sealing over crushed flex without repair. Some crews will tape a crushed attic run and call it sealed. In The Woodlands’ long-run multi-zone builds, that flex needs replacement or the restriction stays, killing efficiency and burning out blower motors.
- Tape-only patches at the plenum. The year-round humidity here breaks down foil tape within a season. We see this failure mode constantly in Panther Creek and Indian Springs homes where prior work used the wrong materials.
- Skipping debris removal before sealing. Pine needles and construction sawdust in the returns hold moisture and feed mildew. Seal over it and you’ve locked the problem inside. We remove first, then seal.
- Unbalanced zones after partial sealing. Sealing one zone in a three-system home changes static pressure everywhere. We measure and rebalance so your master bedroom doesn’t end up freezing while the kitchen stays warm.
Pricing for Duct Sealing in The Woodlands, TX
A typical single-zone duct sealing in The Woodlands runs $450 – $850. Multi-zone homes, which are the norm here, usually fall between $800 – $1,400 depending on system count, attic access, and whether we’re replacing degraded flex or just sealing joints. Duct repair for crushed or disconnected runs adds $300 – $650 per location; extensive rebuilds reach $900 – $1,500. We price by the system, not by the vent, so your quote is the full number. Written before work starts. No change at the door. Call (361) 326-5060 for a free estimate.
We Also Serve Cities Near The Woodlands
Our crews work throughout the Houston metro and travel to San Antonio, Dallas, and Fort Worth for scheduled multi-system jobs. Dispatch and scheduling are coordinated from our Houston office. For homeowners in The Woodlands, we’re usually on-site same day or next day depending on the village.
Serving The Woodlands, TX - Our Local Coverage Area
We’re based in the The Woodlands 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 The Woodlands
If some rooms never reach the thermostat setpoint, your energy bills are rising without explanation, or you feel weak airflow at registers farthest from the air handler, you likely have leaks that cleaning won’t fix. Cleaning removes debris; sealing stops conditioned air from escaping into the attic. We camera-inspect to show you which problem you have. Call (361) 326-5060 to schedule.
The canopy drops needles, pollen sacks, and organic debris directly into return registers and attic vents, which then gets pulled into the duct system. Sealing over this debris traps moisture and feeds mildew. Our process removes it first. This is why duct sealing in The Woodlands differs from concrete-slab neighborhoods in Houston where the primary contaminant is dust, not pine.
We price per system, not per vent or per foot of duct. A three-system home in Alden Bridge or Sterling Ridge gets a single written quote covering all accessible ductwork, plenum seals, and boot connections. Typical range for three systems: $1,100 – $1,800. You know the full cost before we start. No per-vent add-ons.
You should receive before-and-after photos of sealed joints, static pressure readings by zone, and a written invoice itemizing what was sealed and what materials were used. We provide this on every job. For multi-system homes, we also note any flex runs we flagged for future monitoring. Keep these records; they’re your proof of work done and your baseline for comparison if problems return.
Yes. The year-round humidity here degrades tape-based seals within months and can soften inferior mastic. We use commercial-grade mastic and reinforced mesh rated for humid subtropical climates, and we verify that plenum connections have mechanical fasteners, not just adhesive. Done this way, sealing lasts 10 – 15 years. Our 365-Day Done Right Promise covers the first year in writing; if anything fails, we return at no charge.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving The Woodlands since 2004.