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.
Guardsman Duct Repair & Sealing in Fort Worth: What to Know First
We provide independent Guardsman duct repair and sealing in Fort Worth for homeowners who need the job documented, priced in writing, and done under a real guarantee. Most Guardsman repairs we handle are completed in a single scheduled visit, with a written flat price agreed before any panel comes off. We are not affiliated with or authorized by Guardsman - we are an independent service provider - and we work on Guardsman systems the same way we work on every brand: photograph first, quote in writing, repair second.
This page is for Fort Worth homeowners who searched their Guardsman model number, found a duct issue, and want to know what failure looks like, what it costs, and whether the repair is worth doing before calling anyone. If that’s where you are, call (817) 520-8797. Estimates are free, and we put our number next to any competitor’s written quote at no charge.
How Guardsman Products Fail - and How We Fix Them
Guardsman builds its residential duct components to tight tolerances, which means small failures propagate fast if they are not caught. In Fort Worth, where attic temperatures hit 140°F in July and crawl spaces hold winter moisture from Trinity River basin humidity, we see consistent patterns across specific Guardsman lines.
- Guardsman Flex Series: collar separation at plenum connections. The Flex Series uses a lighter-gauge vinyl collar at the plenum (the central distribution box) that fatigues faster than metal in Fort Worth’s heat-cycling attics. We replace with a reinforced metal collar and seal with mastic sealant, a water-based paste that sets flexible and lasts longer than foil tape in high-temperature swings.
- Guardsman Rigid Metal Line: seam gaps at longitudinal joints. The Rigid Metal Line ships with factory-sealed seams that can open when the duct run (a single continuous section) vibrates against framing. We spot the leak with a pressure test, reseal with mastic, and add mechanical support to stop the motion. The camera shows the gap before we touch it.
- Guardsman Insulated Flex: inner liner collapse at radius bends. The insulated flex line has a spiral wire helix inside that can kink where the duct turns sharply to reach a second-story register (the vent cover in your room). We replace the collapsed section with a gradual sweep elbow and verify airflow with an anemometer at the register. No guesswork.
- Guardsman Snap-Lock Duct: gasket degradation at joint rings. Snap-lock systems rely on a rubber gasket that hardens after 8-12 years in Texas UV, even in attics with limited light exposure. We source quality aftermarket gaskets rated for 200°F continuous use - OEM is available but carries a 6-week lead time most Fort Worth homeowners do not want to wait for.
- Guardsman Return Air Boot: air leak at platform seams. The return air boot, which connects your return grille to the air handler, is often a site-built sheet metal box on Guardsman systems installed 2015-2019. Platform seams separate when the boot flexes from negative-pressure extraction (the suction force of your HVAC blower). We disassemble, reseal all seams with mastic, and photograph the repair from inside.
Our Guardsman Duct Repair & Sealing Process

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Visual and camera inspection. We run a borescope camera through every accessible duct run and show you the footage before discussing scope. The camera doesn’t have a sales pitch - if it shows intact ductwork, we say so.
- 2
Pressure test for leakage. We seal the registers and pressurize the system to measure total leakage in CFM25 (cubic feet per minute at 25 Pascals). This gives a baseline and proves the fix later.
- 3
Written scope and flat price. Haven Standard Clause 1: we deliver a written price before any work starts. No per-vent arithmetic, no add-ons once the truck is in your driveway. One flat price per system.
- 4
Repair with documented parts. We use Guardsman-compatible components or quality aftermarket equivalents, and we record part numbers in your job file. You can verify what was installed.
- 5
Post-repair pressure test and photo record. We retest to confirm leakage reduction, then photograph inside the repaired runs. The photo record is delivered as a standard deliverable, not an extra.
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365-Day Done Right Promise in writing. If the repair fails, we make it right. The promise is backed in writing, not subject to manager approval.
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AfterWhat Guardsman Duct Repair & Sealing Costs in Fort Worth
These are honest ranges for Guardsman duct repair and sealing in Fort Worth, based on jobs we have completed since 2013. Your written estimate will land in this band unless we find structural damage that changes the scope.
| Service | Typical Range |
|---|---|
| Single flex duct run repair (collar, seal, support) | $340 - $520 |
| Metal duct seam sealing, per run | $280 - $440 |
| Return air boot rebuild and seal | $420 - $680 |
| Whole-system Guardsman duct sealing (mastic, 8-12 runs) | $1,800 - $2,800 |
| Insulated flex replacement with sweep elbow | $380 - $560 |
What moves the price: accessibility (crawl space vs. open attic), number of runs affected, and whether we are correcting prior work that used foil tape instead of mastic. We do not quote per-vent prices. Call (817) 520-8797 for an exact written estimate - there is no charge, and we will put our number next to any competitor’s quote under our Free Second Opinion.
Why Fort Worth Homeowners Call CleanRun Air Duct Cleaning Fort Worth for Guardsman Work

We have been running jobs across Fort Worth since 2013, including plenty of work in the Near Southside where older homes hold onto decades of debris in ways newer builds do not. Tomas Reyes, our owner, grew up in the Bronx and learned his first trade skills at Bronx Community College before years in the field taught him what actually accumulates in duct systems when nobody’s paying attention.
Our technicians are background-checked, uniformed, and identified by name before arrival - Haven Standard Clause 3: Verified Crews. We also service Lennox, Trane, and Carrier systems, which means we see how Guardsman compares and can advise when a multi-brand environment complicates the repair. Every job carries the 365-Day Done Right Promise, the Documented Photo Record, and the written price delivered before work starts. No exceptions.
FAQs
Independent repair does not automatically void a Guardsman warranty, but coverage for the specific component may be affected if the repair is not done to manufacturer tolerances. We use Guardsman-compatible parts and document part numbers so you have a record if warranty questions arise later. Call (817) 520-8797 if you want us to review your warranty documents before scheduling.
OEM Guardsman parts typically ship in 4-6 weeks from the manufacturer. We stock quality aftermarket equivalents rated for the same temperature and pressure specs, which lets us complete most repairs in one scheduled visit. If you prefer OEM, we will order it and schedule around delivery - no markup on the part.
Replace if the ductwork is past 20 years and showing multiple failure types - collapsed flex, rusted metal, and degraded insulation together. Repair if the issue is isolated to one or two runs and the rest tests tight. We make this recommendation based on the pressure test and camera footage, not age alone. The estimate is free either way.
We prove it with a post-repair pressure test comparing CFM25 before and after. You receive the numbers in writing, plus the photo record of every sealed joint. If the leakage reduction does not meet industry standards for the repair type, we keep working until it does - Haven Standard Clause 1, written price; Clause 7, documented result.
Yes. Mixed-brand systems are common in Fort Worth, especially in homes built 2015-2020 where the builder spec’d one brand for ducts and another for mechanical. We service Lennox, Trane, and Carrier in addition to Guardsman, so we understand how the components interface and where the failure point actually lives.
Ready for a written estimate? Call (817) 520-8797 to speak with a live person, or schedule a free estimate for Guardsman duct repair and sealing in Fort Worth. We will put our flat price in writing before any work starts, and we will show you the camera footage before we say a word about what needs to happen next.
Written by Tomas Reyes, Owner, CleanRun Air Duct Cleaning Fort Worth at CleanRun Air Duct Cleaning Fort Worth, serving Fort Worth and nearby areas.




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