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 Pasadena Owner’s Guide
Register and grille cleaning for Guardsman-branded systems in Pasadena typically runs $12 to $28 per unit when done as part of a full duct cleaning, or $95 to $175 as a standalone service for an average home with 8 to 12 registers. We clean and restore Guardsman registers and grilles same-day in most cases when you schedule a duct cleaning, since we’re already at the plenum and every branch line. Most Pasadena homeowners call us after noticing a register that’s coated in gray fuzz, a grille that won’t sit flush anymore, or airflow that feels weak in one room even though the system itself is running fine.

Here’s the thing about registers and grilles: they’re the only part of your duct system you actually see every day. When they’re caked in dust, pet hair, and that sticky cooking-oil film that builds up in Pasadena kitchens, they’re telling you what the rest of the ductwork looks like where you can’t see it.
Key takeaways:
- Guardsman registers and grilles are built to standard residential sizes, but their finish wears differently than big-box replacements
- Cleaning is almost always the right first move; replacement only makes sense when the damper is broken or the frame is bent
- We clean them in place, by hand, as part of a full duct cleaning or as a standalone visit
- Written price before we start, covered by the 365-Day Done Right Promise
Which Guardsman Models This Applies To
Guardsman registers and grilles cover the standard residential footprint: 4×10, 4×12, 6×10, 6×12, and 6×14 stamped-face registers, plus 14×6 and 14×8 return grilles for wall-mounted filter applications. If your home has a Guardsman media cabinet or filter housing paired with the system, the return grille on those units is typically a 16×25 or 20×25 frame that takes a 1-inch or 4-inch filter behind it. That’s a different animal from the throw-away stamped-face registers at the end of each supply run, and it needs different cleaning attention.
Where we see compatibility gotchas in Pasadena homes: older Guardsman registers from the 1990s and early 2000s often have a non-standard damper screw placement that doesn’t line up with modern universal replacements. If an owner tried swapping one out from a hardware store and the screw holes didn’t match, that’s the reason. We can tell you in the first five minutes of a visit whether your register is a standard replacement candidate or something worth cleaning and keeping.
Styles & brands we work with




Signs Your Guardsman Register & Grille Cleaning Is Failing
- Visible fuzz on the register face or louvers: This is lint, pet dander, and dust that’s been pulled through the system and trapped on the edges. It means the register hasn’t been removed and cleaned in years, and the buildup is restricting airflow more than most homeowners realize.
- Grille won’t sit flush against the wall or floor: Paint, drywall texture, or repeated removal with the wrong tool bends the frame over time. A bent frame leaks air around the edges instead of directing it into the room.
- Damper lever is stuck or spins freely: The little metal tab on the face controls airflow. If it’s seized, you can’t balance the room. If it spins without resistance, the internal damper blade has broken free and the register is just a decoration at that point.
- Airflow feels weak in one room only: Before you blame the duct run, check the register. A clogged register face can cut airflow to a room by 30 percent or more. Pull it off and look at the back side; you’ll usually see the problem immediately.
- Return grille is coated in gray or brown film: This is the combination of cooking aerosol, candle soot, and fine dust that settles on the coolest surfaces in your home. On Guardsman return grilles, this film is the first place we look when a Pasadena homeowner says their home smells stale even after cleaning.
See the difference
Before
After
Before
After
Before
AfterReplacement Cost & What’s Included
Here’s the straight answer for Pasadena. If your Guardsman register or grille just needs cleaning, you’re looking at the $12 to $28 per unit range when we’re already doing a full duct cleaning, or $95 to $175 for a standalone register-and-grille service call. If a register is damaged beyond cleaning, replacement registers run $15 to $45 each for good-quality stamped steel, and we install them as part of the visit. The labor is already covered in the service call, so the register itself is the only additional line item.
What drives the range: how many registers your home has, whether they’re floor, wall, or ceiling mounted, and how much buildup has accumulated. We use a degreasing solution on kitchen-adjacent registers and a dry brush method on standard dust buildup. You get the written price before we start, and it doesn’t move at the door. If anything fails within a year, we come back free under the 365-Day Done Right Promise.
DIY or Call Us?
A homeowner can safely remove a register face, wipe down the visible louvers with a damp rag, and vacuum the immediate opening. That’s routine maintenance, not a repair, and it’s worth doing once a year in Pasadena where the dry air and Santa Ana winds push more particulate through homes than most owners realize.
Where DIY goes wrong: registers painted over by previous owners (the frame will chip and look worse coming off than it did on), dampers that are already seized and snap when forced, and return grilles on filter cabinets where the filter behind them hasn’t been changed in so long that removing the grille releases a cloud of whatever accumulated behind it. For anything beyond a surface wipe, call (626) 469-5477. We’ll clean them properly, and if one needs replacement, we’ll tell you straight instead of trying to clean a part that’s already done.
FAQs
In Pasadena, we recommend cleaning registers and grilles annually, timed with your heating or cooling season change. Homes near the Rose Bowl and the Arroyo see heavier dust and pollen loads in spring and fall, and homes with pets or frequent window-open days in the foothill neighborhoods should lean toward twice a year. Call (626) 469-5477 if your registers haven’t been pulled and cleaned in over two years; that’s the point where buildup starts affecting airflow.
A bent frame can sometimes be straightened if the bend is minor, but a seized damper or a bent louver is usually a replacement situation. We’ll always try to clean and restore first, because Guardsman registers from older Pasadena homes often have finish characteristics that cheap replacements don’t match, and we’d rather keep a good part in service than sell you a new one.
A standalone register and grille cleaning for a typical Pasadena home with 8 to 12 registers takes about 60 to 90 minutes start to finish, including setup and cleanup. When done as part of a full duct cleaning, the register work adds no meaningful time since we’re already at each opening.
Yes, we stock standard stamped-steel registers and return grilles in the common residential sizes on every truck, including 4×10, 4×12, 6×10, and 6×12, plus 14×6 and 14×8 return grilles. We also work with Guardsman, Lennox, Trane, and Carrier system parts, so whether your home runs a Guardsman-branded setup or a mix of equipment, we can match what’s already in your home without a second visit. Call (626) 469-5477 and we’ll confirm what we’re bringing before we arrive.
Written by Roy Castellanos, Owner, Hollis Air Duct Pasadena at Hollis Air Duct Pasadena, serving Pasadena and nearby areas.