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 Register & Grille Cleaning: The Schertz Owner’s Guide
Guardsman register and grille cleaning in Schertz typically runs $140-$280 per system for full removal, cleaning, and reinstallation, with most jobs scheduled within 48 hours. We stock Guardsman-compatible registers and grilles on our trucks, and we carry OEM and quality aftermarket equivalents for the 200, 300, and ProVent series. Most Schertz homeowners notice the problem when a room won’t hold temperature despite the HVAC running, or when they spot dark buildup bleeding through the grille face that won’t wipe off with a rag.
CleanRun Duct Repair & Cleaning is an independent service provider, not affiliated with Guardsman. We service Guardsman equipment because it shows up in a lot of local homes, particularly the 2015-2022 builds in Schertz where builders spec’d Guardsman ProVent grilles for their adjustable damper integration.
Which Guardsman Models This Applies To
Guardsman organizes its registers and grilles into three series that matter for Schertz homeowners. The 200 series covers standard fixed-bar grilles in 6×6, 8×8, 10×6, and 12×6 inch sizes, common in older Schertz homes near Main Street where the original HVAC is still in service. The 300 series adds adjustable deflectors and fits the same rough openings, but the mounting clip spacing differs by a quarter-inch, a mismatch that causes rattling if you force the wrong part in. The ProVent series, found in newer construction off Roy Richard Drive and the Barbarosa area, uses integrated damper boxes with 2×10 or 2×12 inch necks that won’t seat properly in standard boots.
To identify yours, pull the grille and check the stamped model number on the back face, usually near the top edge. The first digit tells you the series; the digits after the hyphen give the nominal size. For ProVent units, look for the damper adjustment lever on the face, a small thumb wheel or slider that 200 and 300 series lack. We stock OEM Guardsman replacements and quality aftermarket equivalents from Honeywell and Aprilaire that match the pressure-drop specs without the OEM lead time. Aftermarket makes sense when the original part is backordered or when the homeowner wants a color match Guardsman doesn’t stock in white or almond.
Signs Your Guardsman Register & Grille Cleaning Is Failing

- Uneven airflow from room to room. The adjustable damper in ProVent series grilles seizes after years of dust settling on the axle pivot. In Schertz, we see this accelerate when homeowners run systems without filtration upgrades, the fine caliche dust from nearby construction working into the mechanism.
- Visible black buildup on the grille face that returns after wiping. This isn’t surface dirt; it’s microbial staining on the plastic substrate, common in high-humidity rooms where cold supply air meets warm wall cavities. The grille material has become porous, and no surface cleaning fixes it.
- Rattling or whistling at the register when the blower cycles on. The tension clips that hold Guardsman grilles to the duct boot weaken over thermal cycles. A 300 series grille in a 200 series boot, or vice versa, will chatter until the clips fail completely.
- Grille face yellowing or crazing. Texas attic heat attacks ABS plastic differently than the cooler climates where Guardsman tests its materials. We’ve pulled 6-year-old ProVent grilles from Schertz attics that looked 15 years old, the plastic brittle enough to crack during routine filter changes.
- Dust puffing from the register when the system starts. The gasket seal between grille and boot has failed, or the grille was never sealed properly at installation. Negative-pressure extraction during our cleaning process usually reveals the gap; the camera shows debris packed behind the grille that blows out on startup.
Before
AfterReplacement Cost & What’s Included
| Service | Price Range | What’s Included |
|---|---|---|
| Register/grille removal and deep cleaning (reusable part) | $140-$195 | Negative-pressure extraction of boot and short duct run, ultrasonic or hand cleaning of grille, new gasket, reinstallation with photo record |
| Single grille replacement with OEM Guardsman | $180-$245 | OEM part, removal of failed unit, boot inspection, new gasket, installation, photo record, 365-Day Done Right Promise |
| Multiple grille replacement (3+ units) | $420-$680 | Quantity pricing on parts, full system airflow check, documented photo record of every run, written scope |
| ProVent series with integrated damper | $220-$280 | Damper box included, linkage adjustment, airflow balancing per room |
What drives the range: accessibility (grilles in vaulted ceilings or behind built-ins take longer), whether the boot itself needs repair, and whether we’re matching existing colors in a visible area. Haven Standard Clause 1 applies: the written price you agree to before work starts is the price on the invoice. No per-grille add-ons once we’re in the house. Every replacement carries our 365-Day Done Right Promise in writing, and the Documented Photo Record shows you the boot condition before the new part goes in.
DIY or Call Us?

There’s a safe middle ground here, and then there’s where DIY stops making sense. What you can check: remove the grille carefully, note the model number, and inspect the boot for obvious gaps or collapsed flex duct behind it. A flashlight and a phone camera will tell you if the problem is surface-level or deeper.
Where DIY goes wrong: forcing a mis-sized grille warps the boot flange, turning a $200 job into a duct repair. Reinstalling without a proper gasket creates an air leak that drives up your energy bill silently. And if the camera shows debris buildup more than a few inches into the duct run, surface cleaning at the grille is cosmetic work on a systemic problem. The before photo does the talking. I just bring the camera.
We’re background-checked, uniformed, and identified by name before arrival under Haven Standard Clause 3: Verified Crews. Tomas Reyes and the crew have been working Schertz long enough to know which builders used which boots in which neighborhoods. Call (830) 402-5110 for a written estimate before any work starts.
FAQs
How long do Guardsman registers and grilles last in Schertz?
In our experience, 8-12 years for 200/300 series in conditioned spaces, but ProVent integrated dampers often need attention at 6-8 years due to attic heat exposure and caliche dust infiltration. The 2015-2020 builds in Schertz are entering that window now. Call (830) 402-5110 for an exact quote - estimates are free.
Can a Guardsman grille be repaired instead of replaced?
Cleaning and re-gasketing works when the plastic is intact and the adjustment mechanism still moves freely. Once the ABS crazes or the damper axle seizes, repair costs approach replacement without the warranty coverage. We photograph the part before recommending either path. Call (830) 402-5110 for an exact quote - estimates are free.
How long does a replacement take?
A single grille, 45-60 minutes including boot inspection and photo documentation. A full-home swap of 8-12 grilles runs 3-4 hours with airflow verification at the end. We schedule by the job, not by the hour, so the crew isn’t rushing past something the camera caught. Call (830) 402-5110 for an exact quote - estimates are free.
Do you stock Guardsman parts on the truck?
We carry the common 200 and 300 series sizes and ProVent 2×10 and 2×12 configurations. Less common colors or oversized custom orders arrive within 24-48 hours. We’ll know whether we have yours after a quick model number check by phone. Call (830) 402-5110 for an exact quote - estimates are free.
CleanRun Duct Repair & Cleaning also stocks parts for Lennox, Trane, and Carrier registers and grilles, and we service those brands with the same documented approach.
Written by Tomas Reyes, Owner & Lead Technician, CleanRun Air Duct Cleaning Schertz at CleanRun Air Duct Cleaning Schertz, serving Schertz and nearby areas.




Before
After
Before
After