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 Air Quality & Sanitizing in San Antonio: What to Know First
CleanRun Air Duct Cleaning San Antonio provides independent Rotobrush service for air quality and sanitizing throughout the San Antonio metro, from Alamo Heights to Stone Oak to the near-west neighborhoods off Culebra. Most Rotobrush sanitizing and air quality jobs are scheduled within three to five business days, with written pricing delivered before any work begins under Haven Standard Clause 1. Whole-system Rotobrush sanitizing with documented photo record typically runs $340-$620 depending on system size and whether we’re treating for mold, bacteria, or installing UV light filtration.
This page is for homeowners who already own a Rotobrush air duct cleaning system or have had Rotobrush-branded sanitizing work done in the past, and need honest answers about what their equipment can and cannot do for mold treatment, bacteria sanitizing, odor removal, UV light installation, air purifier integration, or allergen reduction. If you’re ready to schedule, call (726) 600-7155. Estimates are free, and we put our written price next to any competitor’s.
How Rotobrush Products Fail - and How We Fix Them
- Rotobrush BrushBeast and BrushBeast 2.0 units lose suction at the plenum inlet when the flexible drive cable frays internally. The cable runs through a 25-foot nylon sheath and spins the brush head at 450 RPM; once strands separate, vibration transfers to the motor mount and the negative-pressure extraction drops by 40 percent or more. We replace the cable assembly with OEM-spec stainless braid from Guardsman, photograph the debris mat at the plenum before touching anything, and test static pressure at the register to confirm restoration.
- Rotobrush DuctMaster and older DuctMaster II systems develop biocide delivery line clogs in San Antonio’s hard water conditions. The 1/4-inch nylon solution line that feeds antimicrobial or sanitizer into the airstream calcifies where it tees into the main wand; owners think the pump failed, but it’s usually a crystallized restriction at the barb fitting. We pull the line, flush with de-scaling agent, and replace the barb with a brass compression fitting that tolerates our local water chemistry. The camera goes in first. Then we talk.
- Rotobrush SpeedTray and compact portable units overheat during extended sanitizing runs because the cooling fan intake sits at floor level. In San Antonio’s spring pollen season, cottonwood fuzz and oak catkins clog the intake screen in under twenty minutes of continuous operation, triggering thermal cutoff. We clean the intake, relocate the screen to a higher position where practical, and schedule the sanitizing phase in two shorter cycles with cool-down intervals - documented on the job sheet so the next tech knows the history.
- Rotobrush UV-C light add-on kits (the RUV series) suffer ballast failure after 18-24 months due to heat cycling in unconditioned attics. San Antonio attic temperatures exceed 140°F in July and August; the Chinese-sourced ballasts in early RUV-1 and RUV-2 kits were not potted for that thermal load. We source replacement ballasts from Abatement Technologies with higher temperature tolerance, install them with heat-dissipating aluminum mounting brackets, and photograph the lamp output with a UV meter to verify 253.7 nanometer emission - not just “the light came on.”
- Rotobrush HEPA vacuum canisters on the BrushBeast line lose seal integrity at the gasket flange after repeated latch cycles. The black rubber gasket compresses permanently and allows fine particulate to bypass the filter, which defeats the point of HEPA-contained extraction during mold remediation. We measure the gasket groove with a feeler gauge, replace with OEM or higher-durometer silicone from Nikro if the groove has worn oversize, and run a particle counter at the exhaust port to prove zero bypass before the crew packs up.
Our Rotobrush Air Quality & Sanitizing Process

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Written price delivered before work starts. We inspect the Rotobrush system with a camera scope, identify the specific model and serial, and deliver a fixed written price under Haven Standard Clause 1. No per-vent add-ons, no “once we’re here” surprises.
- 2
Documented photo record of every duct run. Before any sanitizing agent enters the system, we photograph the interior condition at the plenum, each elbow, and the register terminus. Tomas Reyes started this practice in 2013 after finding a dead bird in a Queens brownstone return - customers deserve to see what we saw.
- 3
OEM or quality aftermarket parts decision, explained in writing. For Rotobrush units still under manufacturer warranty, we use OEM parts to preserve coverage. For out-of-warranty systems, we source equivalent or upgraded components from Guardsman, Nikro, or Abatement Technologies - never generic knockoffs - with the trade-off noted on your job record.
- 4
Sanitizing treatment matched to the actual contamination. Mold, bacteria, or odor - each gets a different protocol. We apply EPA-registered antimicrobial through a pressurized fogger, run the Rotobrush brush head for mechanical agitation where debris is present, and follow with negative-pressure extraction so nothing settles downstream.
- 5
UV or air purifier integration tested under load. If we’re adding a UV-C lamp or in-line purifier, we verify airflow across the bulb, measure output, and confirm the HVAC control board isn’t overloaded by the added amp draw.
- 6
Final photo record, written scope, and 365-Day Done Right Promise delivered. You get the before-and-after images, the parts list, and our written guarantee before the truck leaves your driveway.
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AfterWhat Rotobrush Air Quality & Sanitizing Costs in San Antonio
These are honest whole-system ranges for Rotobrush equipment in the San Antonio market. Every job gets its own written price before work begins.
| Service | Typical Range | What Moves the Price |
|---|---|---|
| Bacteria / antimicrobial sanitizing | $340-$480 | System size (single vs. dual return), access difficulty, whether brush agitation is needed |
| Mold treatment with HEPA containment | $480-$620 | Extent of visible growth, attic vs. crawlspace ductwork, post-treatment lab testing if requested |
| Odor removal (smoke, pet, decomposition) | $380-$540 | Source accessibility, number of affected duct runs, whether ozone or hydroxyl treatment is indicated |
| UV-C light installation (Rotobrush-compatible) | $290-$440 per lamp | Lamp wattage, ballast relocation needed, electrical connection type |
| Whole-home air purifier (Aprilaire/Honeywell) | $680-$1,240 | Unit capacity, ductwork modification for in-line mounting, electrical |
Homes in Stone Oak and Alamo Ranch often run toward the higher end due to larger square footage and dual-zone systems. Older neighborhoods like Monte Vista or King William may need access modifications that add $60-$120. Call (726) 600-7155 for an exact quote - estimates are free, and we put our number next to any written estimate you’ve already received.
Why San Antonio Homeowners Call CleanRun Air Duct Cleaning San Antonio for Rotobrush Work

We’ve logged thousands of hours on Rotobrush equipment in San Antonio tract homes, custom builds, and historic renovations. The 365-Day Done Right Promise means if the mold comes back, the odor persists, or the UV lamp fails prematurely, we make it right - in writing, not subject to manager approval. Haven Standard Clause 3, Verified Crews, means background-checked, uniformed technicians who arrive with a name badge and a camera scope, not a shop-vac and a coupon.
Rotobrush is not the only brand we service. Our equipment roster includes professional-grade tools from Lennox, Trane, Carrier, Nikro, Abatement Technologies, Honeywell, Aprilaire, and Guardsman - so if your Rotobrush system needs a component that’s backordered or discontinued, we have verified cross-reference options rather than leaving you stranded. Every job since 2013 has started with a written price and ended with a documented photo record. That’s 52,000 homes and counting.
FAQs
Properly applied antimicrobial fogging and mechanical brush cleaning do not void HVAC warranties, but improper application - oversaturating the evaporator coil or using non-EPA-registered chemicals - can. We document every product’s EPA registration number on your job sheet and avoid coil saturation by capping the supply plenum during treatment. Call (726) 600-7155 if your HVAC installer has raised concerns - we’ll review their warranty language with you at no charge.
The photo record shows visible debris removal, and for mold jobs we can arrange third-party post-treatment air sampling at your request. We also measure static pressure before and after to confirm the system isn’t restricted by residual moisture or product overspray. The 365-Day Done Right Promise covers re-treatment if odor or visible growth returns.
Most DuctMaster components remain available through aftermarket suppliers, though some OEM-exclusive parts like the early blue trigger housing are discontinued. We cross-reference to Guardsman and Nikro equivalents and note any fitment modifications on your written scope. If a part is truly unavailable, we’ll tell you before quoting - no deposit, no surprise.
If the vacuum motor or drive cable has failed twice in three years, replacement usually makes sense - the BrushBeast 2.0 extracts at higher CFM and the HEPA canister seal design is improved. For intermittent electrical issues or single-component failures, repair is typically the better value. We give both numbers in writing and let you decide.
A standard whole-system bacteria sanitizing with brush agitation takes three to four hours for a single-zone home, five to six hours for dual-zone systems common in Stone Oak and Helotes. Mold treatment with HEPA containment adds two to three hours for setup and breakdown. We schedule the full day block so technicians aren’t rushing to the next job.
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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