Guardsman Duct Repair & Sealing Nationwide

Guardsman Duct Repair & Sealing in New Braunfels: What to Know First

We provide independent Guardsman duct repair and sealing in New Braunfels with written upfront pricing and a documented photo record of every duct run. Most Guardsman jobs we handle, from flex duct repair to full mastic sealing of metal trunk lines, are completed in a single scheduled visit with the 365-Day Done Right Promise backed in writing. This page is for homeowners who found a Guardsman label on their plenum, the main distribution box where conditioned air splits into duct runs, and need to know whether the problem is a seal, a section, or the whole run. Call (830) 549-6847 for a free estimate with no obligation to book.

Call (830) 549-6847

How Guardsman Products Fail - and How We Fix Them

• Guardsman Flex Series collapses at the elbow near the plenum. The wire helix inside flex duct from this line fatigues after repeated heat cycling, especially in New Braunfels attics where summer temperatures exceed 140°F. We cut back to sound duct, install a metal sleeve at the transition, and seal with mastic, not tape alone, so the repair outlasts the original section.
• Guardsman Rigid Metal trunk lines leak at longitudinal seams. These seams open gradually as the house settles, particularly in the clay-heavy soils around Canyon Lake and the Hill Country fringe of New Braunfels. We brush clean the seam, apply fiber-reinforced mastic sealant in two coats, and pressure-test before closing the attic access.
• Guardsman Register Boot seals fail where duct meets the ceiling. The boot, the metal fitting that transitions duct to room register, separates from surrounding drywall due to vibration and seasonal expansion. We re-secure with mechanical fasteners and seal the gap with mastic rated for the temperature range, not standard caulk that cracks in six months.
• Guardsman Insulated Flex develops internal liner collapse. The inner liner, the plastic film that carries air, detaches from the insulation jacket and creates a blockage that looks like a closed damper. We scope the run with a camera, document the collapse in the photo record, and replace the section with new flex duct secured with Panduit straps at proper tension.
• Guardsman Return Duct pulls unconditioned attic air through gaps. Negative pressure in the return side draws hot attic air into the system, raising humidity and energy bills. We seal all penetrations with mastic, add mechanical supports where the duct sags, and verify with a smoke pencil that the system pulls only from the intended return grilles.

Our Guardsman Duct Repair & Sealing Process

1. 1
   Inspection and photo documentation. We photograph the full length of every affected duct run before touching anything, using a camera that sends images to your job record in real time.
2. 2
   Written scope and price. We deliver a written price for the exact work needed, under Haven Standard Clause 1, before any panel comes off or any sealant is opened. No exceptions.
3. 3
   Parts decision: OEM or quality aftermarket. For Guardsman systems, we source OEM fittings when the geometry is proprietary and use quality aftermarket components, such as sheet metal from local fabricators, when the specification is standard. We note the origin of each part on your written scope.
4. 4
   Repair and seal. We execute the repair, apply mastic sealant with proper cure time, and support flex duct at 4-foot intervals per SMACNA guidelines, the industry standard for duct installation.
5. 5
   Pressure test and final photo record. We verify seal integrity and photograph every completed run. Your documented photo record, including before and after images, is delivered as a standard deliverable before we leave.
6. 6
   Written guarantee. The 365-Day Done Right Promise is printed and signed, not mentioned in passing. If the seal fails or the repair needs attention, we make it right.

Before

After

What Guardsman Duct Repair & Sealing Costs in New Braunfels

These ranges reflect what we have written on actual Guardsman jobs in New Braunfels over the past three years. Every price is agreed before work starts.

What moves the price: attic accessibility, the number of affected runs, whether the home has a single or zoned system, and whether previous repairs used improper materials that must be removed first. We have found duct tape, the cloth-backed kind that turns to dust, on more Guardsman systems than we can count. Removing it adds labor but prevents the same failure twice.

Call (830) 549-6847 for a free estimate. We will put a written number next to any competitor’s quote under our Free Second Opinion policy.

Why New Braunfels Homeowners Call CleanRun Air Duct Cleaning New Braunfels for Guardsman Work

We are independently owned and operated under the Haven Standard, not a franchise, and we have worked on Guardsman duct systems in New Braunfels since 2013. Tomas Reyes, our owner, learned to read ductwork at BOCES Westchester and has spent over a decade crawling attics from Gruene to the Canyon Lake rim, where he has documented enough flex duct from the late eighties to know that a collapsed liner looks like a damper problem until you send a camera through it.

Our technicians are background-checked and uniformed under Haven Standard Clause 3: Verified Crews. They carry professional-grade equipment from Rotobrush, Nikro, Abatement Technologies, Honeywell, Aprilaire, and Guardsman, named here so you can verify specifications before agreeing to a price. We also service Lennox, Trane, and Carrier systems, which matters when a Guardsman plenum connects to equipment from another manufacturer and the failure is at the interface.

Every job ends with a documented photo record and the 365-Day Done Right Promise in writing. We do not ask for trust. We deliver evidence.

FAQs