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.
Rotobrush Register & Grille Cleaning: The Los Angeles Owner’s Guide
If your Rotobrush register and grille cleaning attachment has stopped gripping or the brush head won’t spin, we stock compatible replacements and can typically have your system running again within one service visit. Installed pricing in Los Angeles generally runs between $85 and $220 depending on which Rotobrush model you own and whether the failure is in the brush assembly, the shaft coupling, or the grille tool itself. Most owners discover the problem mid-job: the brush stalls on a register, leaves streaks on the grille face, or the attachment wobbles loose from the handpiece. You’ll feel it before you see it – the tool stops doing the work, and you’re left pressing harder to get the same result. That’s the part telling you it’s done.
Which Rotobrush Models This Applies To
We work on register and grille cleaning attachments across the Rotobrush aiR+ line, the classic R500 and R600 series, and the newer eBoss and RotoStorm platforms. Here’s the compatibility gotcha most owners hit: the grille brush and register tool are not universal across generations. The aiR+ uses a quick-connect collar with a 1.25-inch shaft receiver, while the older R500/R600 series threaded onto the handpiece. If you’re shopping for a replacement and the collar slides on but won’t lock, you’ve got an aiR+ tool on an older handle or vice versa. The surest way to identify your part is the etched model number on the collar or the base of the brush plate. On OEM versus aftermarket: Rotobrush OEM brushes hold their bristle pattern longer, but quality aftermarket equivalents from suppliers we vet run about 30 percent less and perform within a hair of the factory part for residential use. We carry both on the truck and we’ll tell you honestly which one makes sense for your situation. Kestrel Air Duct Los Angeles is an independent service provider – we’re not affiliated with Rotobrush, but we’ve installed and serviced their equipment for close to two decades.
Styles & brands we work with




Signs Your Rotobrush Register & Grille Cleaning Is Failing
- Brush stalls or chatters on the grille face. This usually means the bristle ring has worn past its useful contact depth. The brush is skipping instead of scrubbing, and you’re leaving dust lines between the grille slats. In Los Angeles, fine particulate from dry air and wind-driven dust accelerates this wear faster than humid climates.
- The attachment wobbles or vibrates at the handpiece connection. The shaft coupling or the quick-connect collar is wearing out. If you can rock the tool side to side while it’s locked in, the coupler has ovaled. Continuing to run it that way will chew up the handpiece receiver too.
- Bristles flatten on one side. Misalignment from a dropped tool or a bent shaft plate. You’ll see it – the brush contacts on only half its diameter, and it pulls to one side while running.
- You hear a clicking or grinding when the brush spins up. Debris has worked its way into the bearing race or the gear reduction. Los Angeles homes with older ductwork throw off rust scale and drywall dust that finds its way into the tool’s internals.
- The grille tool leaves black streaks on light-colored registers. The backing plate is dragging because the bristles have worn too short, and the plate material is transferring onto the grille surface.
See the difference
Before
After
Before
After
Before
AfterReplacement Cost & What’s Included
For most Los Angeles homes, plan on $85 to $140 for a replacement brush ring or register tool on the aiR+ and eBoss lines, and $150 to $220 when the shaft coupling or gear housing needs replacing on older R500/R600 units. The range comes down to three things: which generation of Rotobrush you own, whether we’re installing OEM or a vetted aftermarket equivalent, and whether the failure is isolated to the brush head or has worked its way into the drive assembly. Every quote includes the part, the labor to install and test it on your actual handpiece, and a written breakdown before we touch a thing. If the replacement part fails within 365 days, the work is covered under our written guarantee – we come back and make it right at no charge. That’s the Kingswell Guarantee, in writing, on every job we do in Los Angeles.
DIY or Call Us?
Replacing a Rotobrush brush ring is something a careful owner can do in ten minutes with an Allen wrench; we will never upsell you on that. The shaft coupling and gear housing are a different story. These assemblies sit under spring tension, and if the retaining clip releases while you’re prying at the housing, the parts can come apart with real force. We’ve seen hand injuries from exactly that failure mode. If your issue is the brush head or the grille plate, swap it yourself and save the service call. If the problem is inside the collar, the coupling, or the gear housing, call us at (213) 733-0665 and let a background-checked technician handle it – it’s a twenty-minute fix with the right retaining tools and a bench vise. We’ll match the part to your specific Rotobrush model while you’re on the phone, and the written price is in your hands before the visit.
FAQs
With regular residential use in Los Angeles, the brush ring typically lasts 18 to 30 months, and the shaft coupling lasts 3 to 5 years. Dry, dusty duct conditions common to LA homes shorten brush life compared to more humid markets, so if you’re running jobs weekly, plan on replacing the brush annually. Call (213) 733-0665 for a quick assessment based on how often you’re actually using the tool.
Brush rings and grille plates are replaceable wear items and don’t need full assembly replacement. Shaft couplings can sometimes be rebuilt with a new bearing race, but on the aiR+ and eBoss lines it’s usually cheaper to replace the whole coupler than to rebuild it. We’ll tell you which route costs less before any work begins.
A brush ring replacement takes about 15 minutes including testing on your handpiece. A coupler or gear housing replacement runs 30 to 45 minutes. We do both on-site in Los Angeles, and we test the tool on a register before we leave so you know it’s right.
Yes. We carry brush rings, grille tools, and couplers for the aiR+, R500/R600, and eBoss lines on our service vehicles, along with compatible aftermarket options if you want to spend less. We also carry parts for Lennox, Trane, and Carrier systems when the job calls for it. If your exact part isn’t on the truck, we can typically have it in hand within two business days.
If your Rotobrush register and grille cleaning attachment is giving up mid-job, call Kestrel Air Duct Los Angeles at (213) 733-0665. We’ll match the part to your model over the phone, give you a written price before the visit, and stand behind the work in writing for a full year. Tell me what you’re seeing with the tool, and we’ll tell you honestly whether it’s a simple brush swap or something deeper – and exactly what it’ll cost.
Written by Dale Whitmore, Owner, Kestrel Air Duct Los Angeles at Kestrel Air Duct Los Angeles, serving Los Angeles and nearby areas.