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.
Rotobrush HVAC Cleaning in San Antonio: What to Know First
CleanRun provides independent Rotobrush HVAC cleaning in San Antonio for homeowners who need their air handler, coils, or blower serviced by technicians who actually know the equipment. Most Rotobrush cleaning jobs we handle in San Antonio are completed in a single visit with a written price agreed before any panel comes off. We are not affiliated with or authorized by Rotobrush; we are an independent service provider with twelve years of documented photo records on every job.
This page is for San Antonio homeowners who own a Rotobrush air duct cleaning system and need the HVAC side cleaned, maintained, or restored after a performance drop. If your Rotobrush unit is pulling weak airflow, smelling musty between cycles, or leaving uneven temperatures room-to-room, the problem is usually in the HVAC components the duct machine connects to, not the brush unit itself. Call (726) 600-7155 for a free estimate with a written price delivered before work starts.
How Rotobrush Products Fail - and How We Fix Them
- Beast Series brush motor seizure from dust infiltration. The Beast’s sealed bearing housing isn’t fully sealed against the fine limestone dust that hangs in San Antonio’s Hill Country air. We see this in Alamo Ranch and Helotes homes where the unit sits in a vented attic. Our fix: full motor disassembly, bearing cleanout with solvent flush, and reseal with high-temp gasket material rated for attic heat cycling. OEM bearings or SKF equivalents only.
- AIr+ and Ranger flex-shaft fatigue at the coupler. These residential lines use a braided steel shaft that hardens where it enters the brass coupler, especially if the machine was stored in a garage through a San Antonio summer. The shaft doesn’t snap clean; it frays and sheds metal into the duct run. We replace with either Rotobrush OEM shaft assemblies or American-made braided replacements from Nikro, depending on availability and your preference.
- Brush head hub cracking on early-production Air models. The ABS hub on pre-2019 Air units develops stress fractures when rotated against collapsed flex duct, common in Stone Oak tract homes built during the 2015-2018 boom. We document the crack with the camera scope, then fit either an OEM replacement hub or a machined aluminum aftermarket hub from Guardsman that outlasts the original.
- Beast 850 vacuum blower impeller imbalance from moisture ingestion. San Antonio’s spring humidity spikes and occasional attic condensation events throw the impeller off-balance. The symptom is a rhythmic vibration that worsens over months, not days. We pull the impeller, true-balance it on a dynamic balancer, and replace any eroded blades. If the housing is scored, we source replacement housings through Abatement Technologies rather than patching.
- Control board capacitor swelling on all 120V units. The capacitor banks sit near the motor vents and cook slowly in attic installations above 140 degrees. We see this most in summer jobs in Shavano Park and Dominion homes with dark shingle roofs. Our fix is always a spec-matched replacement, never a “close enough” substitute, because undervoltage to the brush motor is what kills the shaft coupler in the first place.
Our Rotobrush HVAC Cleaning Process

- 1
Camera inspection before quote. We run a lighted scope through the plenum, the evaporator coil face, and the blower compartment. The camera goes in first. Then we talk. You see what we see before any price is written.
- 2
Written scope and price under Haven Standard Clause 1. The quote specifies every component to be cleaned or replaced, the labor hours estimated, and the parts source (OEM Rotobrush, Nikro, Guardsman, or equivalent). No per-vent pricing. No open-ended hourly rates.
- 3
Component removal and contained cleaning. We pull the blower assembly and coil cassettes to a contained work area, never cleaning in place where debris can fall into the ductwork below. Negative-pressure extraction captures dislodged material at the source.
- 4
OEM or verified-equivalent reassembly. Every replacement part is photographed with its packaging label. If we use an aftermarket shaft, hub, or bearing, you get the manufacturer spec sheet as part of your job record.
- 5
Performance test and photo documentation. We measure static pressure across the coil before and after, run the Rotobrush unit through a full cycle to verify brush speed and vacuum pull, and photograph every cleaned surface. The photo record is delivered with your invoice.
- 6
365-Day Done Right Promise activation. The written guarantee is included in your job packet. If the work is not right, we make it right. Haven Standard Clause 5: Accountable Completion.
Before
AfterWhat Rotobrush HVAC Cleaning Costs in San Antonio
| Service | Typical Range | What Moves the Price |
|---|---|---|
| Rotobrush blower assembly cleaning | $280 - $420 | Blower size (standard vs. Beast-series), accessibility, whether the motor needs bearing service |
| Evaporator coil cleaning with Rotobrush air handler | $340 - $520 | Coil depth (A-coil vs. slab), corrosion level, whether drain pan replacement is needed |
| Full HVAC cleaning (coil, blower, plenum, cabinet) | $580 - $890 | System tonnage, number of return plenums, parts replacement (shaft, bearings, capacitors) |
| Rotobrush flex-shaft or coupler replacement | $180 - $340 | OEM vs. aftermarket, shaft length (standard 25′ vs. 35′ extension) |
These are whole-system prices agreed in writing before work starts. We do not quote per-vent or per-register. San Antonio’s hard water and limestone dust mean coil cleaning here typically runs 15-20% higher than national averages because the scale bonds tighter and takes longer to break down without chemical damage. Call (726) 600-7155 for an exact quote - estimates are free.
Why San Antonio Homeowners Call CleanRun Air Duct Cleaning San Antonio for Rotobrush Work

We’ve cleaned Rotobrush equipment in San Antonio since 2013, starting with the original Beast models and following the line through the Air, Ranger, and current production. Tomas Reyes, who leads our crew, trained in HVAC systems technology at Queensborough Community College before moving his focus to the San Antonio market, where he’s logged thousands of hours on jobs including the tract homes near Stone Oak where flex duct collapses and dust accumulation tend to be textbook examples. Our technicians are background-checked and uniformed under Haven Standard Clause 3: Verified Crews. We also service Lennox, Trane, and Carrier systems, which matters when your Rotobrush unit connects to a mixed-manufacturer HVAC stack and the problem turns out to be upstream or downstream of the brush machine itself. Every job ends with a Documented Photo Record and the 365-Day Done Right Promise in writing.
FAQs
No. Routine cleaning and maintenance by an independent service provider does not void a Rotobrush warranty, provided no unauthorized modifications are made. We use OEM or spec-matched replacement parts and document every component with photographs. If you have an active warranty, we note the serial number and service date in your job record so you have proof of proper maintenance. Call (726) 600-7155 if you’d like us to review your warranty terms before scheduling.
If the brush spins properly but you’re still getting weak airflow, musty odors, or uneven temperatures, the problem is almost always in the HVAC components the duct machine serves, not the brush itself. We diagnose this with a camera scope of the plenum, coil, and blower before quoting any work. Call (726) 600-7155 for a free inspection.
Yes, for most models. We maintain relationships with aftermarket suppliers including Nikro and Guardsman for discontinued Rotobrush components. For the pre-2019 Air series hubs and early Beast motor assemblies, we often have better luck with machined aftermarket replacements than with factory back-order, and we always present both options in writing with lead times and prices.
Most residential jobs run three to four hours from arrival to final test. A full HVAC cleaning with coil, blower, and plenum takes longer than a standalone blower service. We schedule by the job, not by the hour, so the crew stays until the scope is complete and the photo record is verified.
We recommend repair when the flex-shaft, bearings, or brush head need service but the vacuum motor and control board are sound. Replacement makes more sense when the vacuum blower is scored or the control board has capacitor damage that affects brush motor voltage, because cascading electrical failures tend to recur. We give you both numbers in writing and let the documentation decide. Call (726) 600-7155 for a free second opinion on any estimate you’ve already received.
Ready to see what’s actually inside your Rotobrush-connected HVAC system? Call (726) 600-7155 for a free estimate. We’ll run the camera first, put a written price in your hand before any work starts, and leave you with a documented photo record of every duct run we touched.
Written by Tomas Reyes, Owner, CleanRun Air Duct Cleaning San Antonio at CleanRun Air Duct Cleaning San Antonio, serving San Antonio and nearby areas.




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