Duct Sealing in Somerset - Tested First, Written Price Second

Fast, Reliable Duct Sealing Across Somerset

Duct sealing in Somerset typically runs $350 – $850 for a whole-home system, and most jobs are completed in a single visit. If your HVAC is running constantly but rooms stay uneven, or your summer power bills are climbing faster than your neighbors’ on FM 2790, leaking ductwork is the likely cause.

Call (361) 326-5060

We’re Hollis Air Duct Cleaning, and our Duct Sealing crews work Somerset regularly. Dispatch and scheduling are coordinated from our San Antonio office, but the technicians who show up at your door know this area. They understand how the caliche dust and limestone grit that define Bexar County’s southwest corridor work their way into duct seams and joints. They know that a manufactured home off South Somerset Road faces different sealing challenges than a custom build near the Medina County line. When you call (361) 326-5060, you’ll reach a live person, not a voicemail loop, and we’ll get you a written price before any work starts.

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

Somerset homeowners have long memories, and they talk. We’ve earned our reputation here by showing up inside the window we quoted, pricing in writing, and leaving the site clean. That’s The Garrison Standard, and it’s how every Hollis crew operates.

Roy Castellanos leads our operation, and his name goes on every job. We’re not a franchise sending whoever’s available; we’re an independently owned company where the owner is accountable. Our technicians are background-checked and uniformed, so you know who’s walking into your home before they arrive.

Because we serve Somerset and the surrounding Bexar County corridor regularly, we carry the right mastics, tapes, and aerosol sealant equipment for the duct types common here. Older fiberboard, flex duct, and the non-standard connections found in area manufactured homes; we’ve sealed them all. The 365-Day Done Right Promise backs every repair: if it fails within a year, we return and make it right at no charge, including a free second visit.

HVAC Duct Sealing in Somerset

HVAC Duct Sealing in Somerset addresses the specific failures that come from this area’s combination of aging housing stock, caliche-heavy soil, and nearly year-round system runtime. The job involves finding and closing gaps in your supply and return ductwork using mastic sealant, metal-backed tape, and when appropriate, aerosol-based duct sealing that pressurizes the system and seals leaks from the inside out. Most Somerset homeowners need this when rooms won’t hold temperature, dust blows from registers even after cleaning, or energy bills spike during July and August when systems fight against 100-degree heat and leaking ducts simultaneously.

Typical whole-home duct sealing in Somerset runs $350 – $850 depending on system size, duct accessibility, and whether we’re working with standard metal duct, deteriorating fiberboard, or the modified flex runs common in local manufactured homes.

Sealing Before the Summer Load

Somerset’s HVAC systems run hard from April through October. Sealing in spring prevents the efficiency losses that show up as August bills. We use mastic compounds rated for Texas attic temperatures, not hardware-store tape that degrades in heat.

Aerosol Duct Sealing for Complex Systems

For homes with ductwork buried in walls or with dozens of small leaks, our aerosol sealant process pressurizes the system and seals gaps up to 5/8 inch from the inside. It’s particularly effective for the long duct runs and multiple branches common in Somerset’s rural properties.

Duct Repair in Somerset

Duct Repair in Somerset often goes hand-in-hand with sealing because the same conditions that cause leaks, rodent intrusion, caliche dust abrasion, and decades of thermal cycling, also cause physical damage. Repair work replaces crushed or disconnected sections, rebuilds deteriorated plenums, and restores proper airflow to rooms that have gone stale. You’ll know you need repair rather than just sealing when you hear whistling from walls, find rooms that stay musty regardless of filter changes, or see visible damage to exposed ductwork in attics or crawlspaces.

Single-section repairs in Somerset typically run $200 – $450. More extensive rebuilds of plenums or multiple branch lines range from $500 – $1,200. We always inspect before quoting, and the price you receive in writing is the price you pay.

Manufactured Home Duct Rebuilds

Somerset’s manufactured housing stock often has original fiberboard ductwork that has been modified with non-standard connections over the years. Our crews rebuild these systems with proper materials, sealing against the rodent entry and dust infiltration that exposed flex runs invite.

Crawlspace and Attic Access Work

Many Somerset homes on acreage have ductwork in crawlspaces or remote attic sections where Texas heat and humidity accelerate deterioration. We repair and seal in these conditions using professional-grade materials from Abatement Technologies and Guardsman, not consumer-grade products.

Trusted Brands We Service in Somerset

We stock and install filtration and sealing products from Honeywell, Aprilaire, Abatement Technologies, and Guardsman, the same brands commercial HVAC crews specify. For duct cleaning and sealing work, our Rotobrush rotary brush systems and Nikro negative-air machines handle the heavy mineral particulate that Somerset’s caliche soil produces. Because we serve this corridor regularly, we keep common parts and materials on our trucks, which means faster turnaround and fewer return trips for Somerset homeowners. When we recommend a specific mastic, tape, or filtration upgrade, we explain exactly what it does for your system and why it matters in this climate.

Common Duct Sealing Problems We See in Somerset Homes

• Caliche dust infiltration through deteriorated seams. The fine limestone grit that blows across Bexar County’s southwest corridor works into duct joints, abrading seals and widening gaps over time. We find this especially in homes near open acreage where south winds carry unfiltered particulate directly into outdoor units and return plenums.
• Rodent damage in manufactured home crawlspaces. Somerset’s rural setting means field mice and rats seek shelter under homes, and the exposed flex duct runs common in older manufactured housing provide easy entry points. We seal with rodent-resistant materials and close access paths.
• Original fiberboard ductwork from the 1980s – 2000s. Many Somerset custom builds and manufactured homes from this era used fiberboard ducts that delaminate and crumble at the seams. Sealing alone won’t hold; we repair with modern materials designed for Texas heat.
• Non-standard modifications by previous owners. In Somerset’s semi-rural market, DIY duct modifications are common. We’ve found dryer vents tied into main trunk lines, flex duct used as permanent supply runs, and plenums cobbled from incompatible materials. Each requires custom sealing and often rebuild work.

Pricing for Duct Sealing in Somerset, TX

We Also Serve Cities Near Somerset

Our crews work throughout Bexar County and the surrounding corridor, including Duct Sealing in Somerset and nearby San Antonio, Helotes, Converse, and Universal City. The same The Garrison Standard, the same written pricing, the same 365-Day Done Right Promise applies whether we’re sealing ducts on a Helotes hillside or a Converse subdivision.

FAQs About Duct Sealing in Somerset