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.
Before
After
Before
After
Before
AfterGuardsman Duct Repair & Sealing in Katy: What to Know First
CleanRun provides independent Guardsman duct repair and sealing in Katy, with most jobs completed in a single scheduled visit and a written price delivered before any panel comes off. We work on Guardsman flex duct, metal duct, and plenum assemblies found in homes from Cinco Ranch to Old Katy, and we back every repair with our 365-Day Done Right Promise in writing. This page is for Guardsman owners who’ve noticed uneven airflow, rising energy bills, or visible damage at duct joints and want a technician who names the part and the price before touching a register. Call (346) 666-7165 for a free estimate with no obligation.
How Guardsman Products Fail - and How We Fix Them
- Guardsman Flex Series GFD-2000: collar separation at plenum connections. The wire-reinforced collar on this series softens faster than the duct body in Katy’s attic heat, which regularly exceeds 140°F from May through September. We find the collar has pulled back from the plenum, leaving a gap that leaks conditioned air directly into the attic. Our fix: cut back to sound material, install a Guardsman-compatible metal start collar with mastic sealant, and support the flex with a proper hanging strap so the weight isn’t pulling on the joint.
- Guardsman Rigid Metal RDG-300: seam failure along longitudinal locks. These rectangular trunk lines use a Pittsburgh lock seam that can work open after years of thermal cycling. In Katy, the humidity accelerates corrosion at the seam gap once air starts escaping. We re-lock the seam where possible, then seal with fiber-reinforced mastic rated for metal duct. If the seam has rusted through, we section in new metal rather than patching over rot.
- Guardsman Insulated Flex GIF-1500: inner liner collapse at sag points. The inner liner on this series is thinner than competing brands, and when installers leave it unsupported across a long attic span, the negative pressure from the air handler causes it to suck flat. We see this most in homes near LaCenterra where builders ran long spans to reach bonus rooms. Our fix: install proper support every four feet per SMACNA guidelines, replace the collapsed section with new flex of matching R-value, and photograph the sag before and after.
- Guardsman Plenum GPR-400: thermal expansion cracks at the air handler interface. This fiberglass plenum expands and contracts against the metal air handler cabinet, and after several Katy summers the flange cracks where it’s screwed down. The crack is often hidden by tape that’s failed from the inside out. We remove the old tape, inspect the flange, and rebuild the seal with a two-part approach: mastic for the gap, then a mechanical flange brace to stop the flexing that caused it.
- Guardsman Damper GDA-100: stuck or broken blades in zone systems. These motorized dampers seize when dust settles on the shaft bushing, which happens faster in Katy’s pollen-heavy spring. A stuck damper sends all the air to one zone and starves another. We test each damper manually and electrically, replace the actuator or the entire damper body depending on failure mode, and verify full travel before we close up.
Our Guardsman Duct Repair & Sealing Process
- 1
Call and schedule. A live person answers, confirms your Guardsman equipment if you know it, and books a two-hour arrival window. No “call for a quote” - the estimate happens on site, in writing.
- 2
Arrival and camera inspection. Our technician, identified by name before arrival, photographs the accessible ductwork before touching anything. The before photo does the talking. Everything after that is just paperwork.
- 3
Diagnosis and written price. We identify the failure mode, check Guardsman parts availability, and present OEM versus quality aftermarket options where both exist. Haven Standard Clause 1: the written price is delivered before any work starts.
- 4
Repair and seal. We execute the repair with professional-grade equipment - Rotobrush for duct access, Nikro HEPA containment if debris is disturbed, and Guardsman-compatible mastic and tape. Every joint is sealed to manufacturer spec.
- 5
Test and document. We pressurize the system and check static pressure recovery, photograph the completed work, and deliver both the photo record and the written 365-Day Done Right Promise before we leave.
- 6
Cleanup and follow-up. We restore attic insulation displacement, remove all debris, and the office checks in within 48 hours to confirm satisfaction.
BeforeAfterWhat Guardsman Duct Repair & Sealing Costs in Katy
| Scenario | Typical Range |
|---|---|
| Single flex duct collar repair (GFD-2000 series) | $280 - $420 |
| Rigid metal seam re-lock and seal (RDG-300, per 4 ft section) | $340 - $520 |
| Insulated flex replacement with supports (GIF-1500, up to 20 ft run) | $480 - $720 |
| Plenum flange rebuild (GPR-400 with mechanical brace) | $560 - $840 |
| Damper actuator replacement (GDA-100, accessible location) | $320 - $480 |
| Whole-system seal with mastic (average 2,200 sq ft Katy home) | $1,400 - $2,200 |
What moves the price: attic accessibility, extent of damaged material requiring replacement versus repair, and whether the failure has caused secondary issues like insulation saturation or mold. We do not price by vent count or square footage on the listing. One flat price per system, agreed before work starts. Call (346) 666-7165 for a free estimate - we’ll put our number next to any competitor’s written quote under our Free Second Opinion.
Why Katy Homeowners Call CleanRun Air Duct Cleaning Katy for Guardsman Work
We’ve worked on Guardsman ductwork in Katy since 2013, including a stretch of older ranch-style homes near LaCenterra at Cinco Ranch where the ductwork tells you more about the house’s history than the seller’s disclosure ever will. Tomas Reyes, our owner, started pulling the camera out before touching a single register because he wanted homeowners to see exactly what was in there - settled dust, pest debris, or nothing worth worrying about. That habit became our standard Documented Photo Record on every visit.
Our technicians are background-checked and uniformed under Haven Standard Clause 3: Verified Crews. We also service Lennox, Trane, and Carrier systems, which matters when your Guardsman ducts connect to equipment from another manufacturer and the failure is at the interface. Every job carries the 365-Day Done Right Promise in writing, not as a policy subject to manager approval. If it’s not right, we make it right.
FAQs
No, properly executed repair does not void the original equipment warranty, though Guardsman does not extend warranty coverage to repaired sections. As an independent Guardsman service provider, we use warranty-safe practices - OEM or equivalent parts, manufacturer-specified sealants, and documented installation - so your remaining coverage stays intact. We note all work performed on your written job record for future reference. Call (346) 666-7165 if you need clarification on what’s still covered.
Replacement is the better choice when more than 30% of the duct surface shows damage, when multiple failure modes are present across the system, or when the existing R-value no longer meets current code for Katy’s climate zone. We make this recommendation in writing with photos, never as a verbal upsell. If a competitor is pushing replacement and you want a second set of eyes, bring us their written estimate - our Free Second Opinion costs nothing. Call (346) 666-7165 to schedule.
Guardsman maintains parts availability for discontinued series for approximately 10 years after production ends, though lead times vary. For older systems where OEM parts are obsolete, we source quality aftermarket components that meet or exceed original specifications - we document the part number and manufacturer on your written record so you can verify independently. We never install a part we can’t justify with documentation. Call (346) 666-7165 to check availability for your specific model.
Most single-point repairs - a collar, a seam, or a damper - take two to four hours from arrival to cleanup. Whole-system sealing on an average Katy home requires a full day. We schedule the job with a realistic time estimate and do not rush the pressure test or photo documentation that confirms the repair held. You’ll know the timeframe before you agree to the price. Call (346) 666-7165 to book a slot that works for your schedule.
You receive a Documented Photo Record of every accessible duct run, before and after, as a standard deliverable on every job - not as an add-on or a courtesy. The photos show the failure, the repair, and the sealed joint. You also receive the written scope, the written 365-Day Done Right Promise, and static pressure readings where applicable. If a company won’t show you what they found, they probably didn’t find much. Call (346) 666-7165 and we’ll show you what the camera sees.
Written by Tomas Reyes, Owner, CleanRun Air Duct Cleaning Katy at CleanRun Air Duct Cleaning Katy, serving Katy and nearby areas.