Whole-home duct cleaning
Dryer vent cleaning
Camera inspection
Sanitizing & deodorizingWhole-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 Marietta Owner’s Guide
Register and grille cleaning for Guardsman systems in Marietta typically runs $75 – $180 when done as part of a full duct cleaning, or $15 – $30 per register if you have just a few that need attention. We stock Guardsman-compatible register sizes on the truck, so this is usually a same-visit fix while we’re already cleaning your ductwork. Most Marietta homeowners discover their registers need work the same way: they pull one off to vacuum behind it, and either the fins are caked with dust that won’t budge, the paint is flaking into the vent, or the register simply won’t seat flush anymore because the frame warped from years of Georgia humidity.

Which Guardsman Models This Applies To
Guardsman registers and grilles follow standard residential sizing: 4×10, 4×12, 6×10, 6×12, and occasionally 8×8 for return applications. If you still have a label on the inside frame, you’ll see a series code like GSR (supply register) or GGR (return grille), followed by the nominal size. On homes around Kennesaw Avenue near Marietta Square, where we see a lot of Guardsman-equipped HVAC systems in older craftsman houses, the registers have often been painted over multiple times, which means the size stamp is gone and we measure the actual opening rather than trust the painted face dimensions.
One compatibility gotcha: a 4×10 at the face is not the same as a 4×10 at the duct opening. The face dimension includes the outside flange, while the actual mounting hole is smaller. We measure the old register’s rear neck, not the decorative face, so we match your duct exactly. For OEM versus aftermarket, Guardsman registers are well-built but the OEM markup is steep. Quality aftermarket equivalents from Decor Grates or Accord Industries match the stamped-steel construction and powder coat at roughly half the cost, and we’re happy to show you both before installing either.
Styles & brands we work with




Signs Your Guardsman Register & Grille Cleaning Is Failing
- Dust is permanently bonded to the fins. Georgia pollen and humidity mix into a paste that regular vacuuming won’t remove. Once dust bakes onto the fin edges, airflow drops and the register starts whistling. This is a deep-cleaning job, not a wipe-down.
- Finish is flaking or yellowing. The original powder coat breaks down after a decade of UV exposure and heat cycling. Flakes end up in the air stream, which means whatever comes off the register blows into the room. Time for a replacement, not just a scrub.
- Register won’t sit flush against the floor or wall. Warped flanges from moisture cycling create gaps, which lets air leak around the register instead of through it. The register still works, but you’re paying to condition the space inside the wall. That’s a frame replacement, not a cleaning fix.
- The damper wheel is seized or stripped. On return grilles especially, the damper that controls air volume seizes after dust and cooking grease accumulate on the mechanism. If the wheel spins but the blades don’t move, the gear track is done.
- Mold spotting on the register face. Marietta’s summer humidity builds condensation on metal registers in high-moisture rooms like kitchens and laundry closets. If you see dark specks that won’t wipe off, that register and the duct behind it need attention, not just the face.
See the difference
Before
After
Before
After
Before
AfterReplacement Cost & What’s Included
In Marietta, expect to pay $15 – $30 per register for cleaning-only service when it’s part of a scheduled duct cleaning, or $25 – $60 per register if you need a replacement installed, including the new register itself. The range depends on size, material (standard stamped steel versus heavier die-cast), and whether we’re matching an existing finish or painting to match. That price covers removal, duct-neck measuring, installation, sealing the flange gap with mastic or foam so air doesn’t leak into the wall cavity, and hauling the old one away.
Every register we install carries our 365-Day Done Right Promise. If anything about the fit, finish, or function isn’t right within a full year, we return and correct it at no charge. You’ll get a written price before we start, and that number does not move once the work begins.
DIY or Call Us?
Registers and grilles are one of the safer HVAC components to work on yourself. A homeowner can absolutely remove a face register with a screwdriver, vacuum behind it, and wipe down the fins with a damp cloth. Where we see DIY go sideways in Marietta is when someone tries to match a replacement register without measuring the rear neck, or strips the mounting holes driving screws into drywall instead of the framing behind it. And if you’re dealing with a return grille on a ceiling, the duct cavity above can be darker and tighter than expected. We’re a phone call away if you’d rather not deal with it. Omar Haddad has pulled enough registers in Marietta to tell you which ones clean up and which need to go. For the ones that need to go, we likely have the replacement on the truck.
Dirty ducts don’t fix themselves – let’s just get it done right.
FAQs
Figure on 10 – 15 years for typical stamped-steel Guardsman registers in Georgia’s climate. Humidity cycles and UV exposure from unshaded windows accelerate finish breakdown, but the metal itself rarely fails. Warped frames and seized dampers are the more common end-of-life triggers around Marietta, not rust-through.
Sometimes. A seized damper on a return grille can be freed if it’s just lint and dust binding the track, and minor finish chips can be touched up with an enamel spray that matches well enough. But a warped flange or a stripped damper gear is a replacement job. Repair tries on those usually buy six months and then the problem returns. Call (762) 216-4075 and we’ll tell you which one you have based on what you’re seeing.
Fifteen to 30 minutes for a standard single register or grille replacement, including measuring, install, sealing, and cleanup. A full-home swap of ten to twelve registers usually runs two to three hours. If it’s part of a duct cleaning appointment, the cleaning itself is the time driver, not the register work.
Our trucks carry the standard residential sizes – 4×10, 4×12, 6×10, and 6×12 – in both white and oil-rubbed bronze finishes that match most Guardsman registers. Odd sizes or custom finishes may take a few days to source, and we’ll tell you that before you’re committed to anything. We also work around Lennox, Trane, and Carrier register mountings, so if the home has mixed equipment, we can match it.
Written by Omar Haddad, Owner, Cardinal Air Duct Marietta at Cardinal Air Duct Marietta, serving Marietta and nearby areas.