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 Coil Cleaning: The Austin Owner’s Guide
We stock and install Rotobrush-compatible coil cleaning components for Austin homeowners right now. Most coil cleaning replacements run $185 to $420 installed, depending on your Rotobrush model and what failed. Walk-ins and same-week appointments are the norm here; call (940) 283-6595 and we’ll match the part to your serial number before you hang up.
What we usually hear from Austin owners: your Rotobrush fires up fine, but the airflow at the brush head feels weak, or the machine is leaving more debris behind than it collects. Sometimes you smell a faint burning odor mid-job. That’s the coil assembly telling you it’s done. Omar Haddad and our crew keep the most common coil parts stocked on the truck because waiting two weeks for a backordered part while a job sits half-finished is bad for you and bad for us.
Which Rotobrush Models This Applies To
Rotobrush builds coil assemblies across a few different machine families, and they are not interchangeable parts. The AiR+ and RotoStorm lines use a different coil profile than the legacy Rotobrush beast systems still running strong in plenty of Texas shops. If your machine has a serial number starting with RB or RS, we can usually identify the correct coil in under a minute over the phone. If the label is worn off entirely, we measure the coil’s outside diameter and the shaft thread pitch at your location before ordering anything.
One compatibility gotcha we see regularly in Austin: owners swap in a generic aftermarket coil that fits on the shaft but runs hotter under load. Rotobrush machines pull consistent amperage through the coil, and a mismatched winding gauge will burn out in months, not years. We stock OEM Rotobrush coils and a quality aftermarket equivalent we trust, but we’re upfront about which one makes sense for your machine’s age and your budget. An older machine used commercially five days a week might not justify OEM pricing. A newer unit used weekly for homeowner jobs usually does. We’ll tell you the honest math either way.
Styles & brands we work with




Signs Your Rotobrush Coil Cleaning Is Failing
- Weak brush head rotation. The coil produces the electromagnetic field that spins the brush. When windings degrade, the field weakens and the brush bogs down the moment it touches duct walls. You feel it as more resistance and less cleaning action per pass.
- Burning or hot-metal smell after ten minutes of running. This is insulation varnish breaking down inside the coil windings. Once that smell shows up, the clock is running. Continuing to run the machine accelerates the failure and can damage the drive shaft.
- Intermittent spin that stops when the machine is tilted or moved. Loose internal coil connections or a worn commutator surface make contact erratic. It looks like a switch problem, but the coil is usually the culprit on Rotobrush models in our experience.
- Tripped breaker on startup. A shorted coil winding will draw far more amperage than rated and trip the circuit immediately. This is the failure that makes us recommend unplugging the machine until it’s inspected, because a shorted coil can overheat faster than most people expect.
- Brush spins with no torque. Even if the shaft spins freely when unloaded, a degraded coil produces surface-level rotation without the force needed to knock loose packed debris. Your run times get longer, and the ducts stay dirty. That’s the clue most owners notice first but explain away longest.
See the difference
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After
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Before
AfterReplacement Cost & What’s Included
In Austin, a Rotobrush coil cleaning replacement parts and labor runs $185 to $420 for most residential and light-commercial machines. The parts themselves typically sit in the $90 to $240 range depending on OEM versus aftermarket and which model series you own. Labor is straightforward: we remove the coupling, pull the worn coil, install the new one, test it under load, and check the shaft alignment before we call it done.
What drives the price spread? OEM coils cost more than the aftermarket equivalent we carry, and some older Rotobrush models require a matching coupling kit that adds about $40 in parts. One flat price is agreed in writing before we open your machine, so the number we quote is the number on the invoice. Every coil replacement we perform carries the 365-Day Done Right Promise. If the coil fails within a year, we return and correct it at no charge. That’s every job, no exceptions.
DIY or Call Us?
Honest answer: you can check a few things safely before calling. Unplug the machine, remove the brush head, and inspect the coil housing for visible scorching or a shell of melted insulation. If you see either, the coil is finished. You can also spin the shaft by hand and feel for a gritty, binding rotation. Those observations help us diagnose faster over the phone.
What we don’t recommend is opening the coil housing yourself. Even unplugged, capacitors in Rotobrush machines retain charge long after disconnection, and a short across the wrong terminals will bite hard enough to send you backward off a step stool. Electrical parts are where DIY savings evaporate into repair costs, or worse. If your machine is showing any of the failing symptoms above, call (940) 283-6595 and we’ll identify the part over the phone, quote the install, and get your Rotobrush back on the truck rotation. This is a job we finish in under an hour on most machines.
FAQs
In our experience across Austin, most Rotobrush coils last four to seven years with regular homeowner use, though Austin’s heat accelerates wear. Machines stored in non-climate-controlled garages run hotter before you even switch them on, and that ambient heat shortens coil life measurably compared to units stored indoors. If your machine lives in a garage that hits 100-plus degrees in August, expect the lower end of that range. Call (940) 283-6595 and we’ll assess the coil condition and give you a realistic timeline for your specific model.
No, not safely. Coil windings are wound and sealed at the factory; rewinding one by hand introduces uneven tension that leads to hot spots and premature burnout. A repair that fails mid-job costs you more in lost time than a replacement would have. We recommend replacement with either OEM Rotobrush or a quality aftermarket coil matched to your machine’s original specs. Call (940) 283-6595 for an honest recommendation on which direction saves you money without cutting corners.
Most Rotobrush coil replacements take our technicians under an hour, and we stock the most common coils in Austin so there’s no week-long wait for a part. The job involves removing the brush coupler, pulling the old coil, seating the new one, and running a load test to confirm torque and amperage draw are within spec. You drop the machine off or we come to you, and it’s ready for your next job the same day. Call (940) 283-6595 and we’ll tell you whether your specific model’s coil is on our stock list before you make the trip.
We stock coil assemblies for the Rotobrush AiR+, RotoStorm, and most legacy brushes we still see in Austin homes and light commercial fleets, plus the aftermarket equivalents we trust. If we don’t have your exact coil in stock, we can typically source it in 48 to 72 hours and coordinate the install once it arrives. We also stock compatible cleaning brushes, couplings, and vacuum filters for Rotobrush machines, along with filter media for Lennox, Trane, and Carrier systems. Call (940) 283-6595 with your serial number and we’ll confirm stock in under a minute.
Clean air isn’t a luxury – it’s just what your system was built to deliver.
If your Rotobrush is down and you need it running again this week, call Cardinal Air Duct Austin at (940) 283-6595. We’ll confirm the right part, give you the installed price before any work begins, and back it with our 365-Day Done Right Promise. You’ll get a written quote, a trackable booking through The Relay Standard, and a working machine. No guesswork, no bait-and-switch, no phone tag. Omar Haddad and the crew are ready when you are.
Written by Omar Haddad, Owner, Cardinal Air Duct Austin at Cardinal Air Duct Austin, serving Austin and nearby areas.