Duct Repair & Sealing in Canyon Lake - We Measure the Leak Before We Quote

Fast, Reliable Duct Repair & Sealing Across Canyon Lake

Duct repair and sealing in Canyon Lake typically runs $280-$680 for most residential jobs, with flex duct replacement in unconditioned attics landing at the higher end and targeted mastic sealing at the lower. We dispatch crews to Canyon Lake from our San Antonio scheduling office, and most repair visits are scheduled within 2-4 business days of your call. Our Duct Repair & Sealing team knows the Hill Country housing stock - the 1970s-2000s vacation cabins on limestone lots, the shared duct systems in lakeside condos, and the specific ways Canyon Lake’s climate destroys ductwork that would last decades elsewhere. Call (830) 549-6847 and we’ll put a written price in your hands before any panel comes off.

Call (830) 549-6847

Why CleanRun Air Duct Cleaning New Braunfels Is Canyon Lake’s Preferred Duct Repair & Sealing Company

We’ve been serving Canyon Lake homeowners since our founding in 2013, and the documented photo record from every job - every duct run, before and after - has built a reputation among the lake’s part-time residents who need to verify work was actually done while they were away. Our crews have completed repairs from the shoreline properties along FM 306 to the retirement homes off Startzville Road, and we maintain a strong local reputation with Canyon Lake customers who review us specifically for showing them what was broken before quoting a fix.

Calls are answered by a live person, 24/7, and our background-checked, uniformed technicians operate under Haven Standard Clause 3: Verified Crews - identified by name before they arrive at your Canyon Lake property. Tomas Reyes, our owner, established the H.A.V.E.N. Standard in 2013 precisely because this industry runs on verbal promises and vanishes after the invoice clears. That doesn’t happen here.

Our response time to Canyon Lake is consistent: we schedule within 2-4 business days for standard repairs, and we coordinate closely with property managers and homeowners who may be arriving from Austin or San Antonio for a weekend. We know which Canyon Lake properties have restricted equipment access, which HOAs require advance notice, and which lakeside drives won’t accommodate a full-size service van.

Our Duct Repair & Sealing Services in Canyon Lake

Duct Sealing & Air Leak Repair

Leaks in Canyon Lake ductwork rarely announce themselves with a whistle. More often, they show up as a $340 summer electric bill for a 1,200-square-foot cabin, or as a bedroom that never cools despite the air handler running continuously. We pressure-test the system, locate leaks with smoke pencil and thermal imaging, then seal with mastic or metal-backed tape rated for Texas attic temperatures. In Canyon Lake’s unconditioned attics - where summer heat exceeds 130°F - tape alone fails within two seasons. We document every sealed joint in your photo record.

Flex Duct Repair & Replacement

The flexible duct installed in Canyon Lake’s 1980s and 1990s builds is now reaching end of life, and the Hill Country heat has accelerated the degradation. The inner liner sags, disconnects at the collar, or delaminates entirely, creating leaks that pull 130°F attic air directly into your supply. We repair where possible - reconnecting collars, supporting sag with proper strapping - and replace where the liner is compromised. Every flex run we install is supported at 4-foot intervals per mechanical code, not draped over trusses like the original.

Metal Duct Repair

Older Canyon Lake homes and some lakeside condos built in the 1970s use galvanized steel ductwork that corrodes at seams and rusts through where condensation collects. We cut out damaged sections, fabricate replacement fittings, and seal with mastic - not duct tape - for a repair that holds through humid shoreline summers and dry winter heat. Metal duct repair in Canyon Lake typically runs $320-$580 depending on accessibility and the extent of corrosion.

Duct Insulation & Mastic Sealant Application

Uninsulated or poorly insulated ductwork in Canyon Lake attics loses 20-30% of conditioned air before it reaches the register. We re-insulate with R-6 or R-8 fiberglass wrap, sealed with vapor-barrier mastic, and pay particular attention to the plenum connections where most thermal loss occurs. For shoreline properties where the reservoir creates localized humidity, proper insulation also prevents condensation that feeds mold growth inside the duct cavity.

Before

After

Trusted Brands We Service in Canyon Lake

Our equipment roster includes professional-grade tools from Honeywell, Aprilaire, and Abatement Technologies - brands you can look up independently before agreeing to any work. We stock common flex duct diameters, collar fittings, and mastic compounds for Canyon Lake jobs, which means most repairs don’t wait on a parts run to San Antonio. For specialized components in lakeside condo systems, our San Antonio office coordinates next-day delivery. We don’t guess at compatibility; we verify manufacturer specs against what’s actually installed in your Canyon Lake home.

Common Duct Repair & Sealing Problems We See in Canyon Lake Homes

• Packrat nesting in vacant vacation homes. Canyon Lake’s winter “cedar fever” season coincides with the stretch when a large share of lake houses and vacation cabins sit empty, so disconnected duct boots and open exterior vents let Hill Country packrats pack nesting material into flex runs that then blast pollen and foul odor the first spring weekend owners return. We find this from Startzville to the FM 306 corridor every March.
• Collapsed flex runs in 130°F attics. Aging 1980s-90s flex duct in unconditioned attics cooks past 130°F, degrading the inner liner so it sags and disconnects at the collar - leaks that never show until cedar pollen season pushes air through them. The damage is invisible from the living space until we camera the run.
• Mold in shared condo duct systems. Shoreline humidity with HVAC off for weeks grows mold inside ducts shared through a stack - one unoccupied unit’s failure feeds the neighboring units’ supply and return ducts. We’ve treated this in lakeside condos where three units shared a common return plenum.
• Failed boots at exterior vents. The combination of Hill Country sun exposure and rodent pressure cracks plastic and thin-metal vent boots, creating entry points for pests and conditioned-air loss. We replace with heavy-gauge galvanized or aluminum boots, secured with screws and mastic, not friction-fit.

Last March we opened a 1988 lake house off FM 306 near Canyon Lake Marina after the owners had been away since Thanksgiving; the return-side flex run had a chewed boot at the exterior vent, a sagging inner liner in the 130-degree attic, and packrat nesting material wedged 6 feet into the supply trunk. We pulled the nesting by source removal under negative pressure with HEPA filtration, rebuilt the boot, mastic-sealed the plenum seams, and ran a camera inspection after re-insulating the run - first power-up was odor-free and the static pressure dropped across the air handler.

Pricing for Duct Repair & Sealing in Canyon Lake, TX

We Also Serve Cities Near Canyon Lake

Our crews repair and seal ductwork throughout the Hill Country corridor, including Canyon Lake homeowners and properties in New Braunfels, Bulverde, Schertz, and Cibolo. Scheduling is coordinated from our San Antonio office, with local dispatch to each community.

FAQs - Duct Repair & Sealing in Canyon Lake