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 Duct Repair & Sealing in Austin: What to Know First
CleanRun Air Duct Cleaning Austin provides independent Rotobrush duct repair and sealing throughout Austin, with most repairs scheduled within a few business days and completed in a single visit. Every job starts with a written price before any panel comes off, and every duct run is photographed before and after so you can see what was actually done. We are not affiliated with or authorized by Rotobrush; we are an independent service provider that works on the Rotobrush systems installed in Austin homes every day. If your Rotobrush air handler, duct run, or plenum is leaking, sagging, or pulling unconditioned attic air into your living space, call us at (737) 243-9544 for a free estimate with a written price delivered on the spot.
How Rotobrush Products Fail - and How We Fix Them
- Rotobrush Air+ and Air+ XP duct collars crack at the plenum connection. The polymer collar that joins the air handler to the galvanized plenum fatigues after repeated thermal cycling in Austin’s 100-degree attic summers. We replace with a reinforced metal collar and seal with mastic, not foil tape, because tape degrades in radiant heat. The photo record shows the crack before we touch anything.
- Rotobrush DuctMaster flex duct sags between truss bays in older Austin homes. The 6-inch flex common in Rotobrush retrofits loses tension where support straps were spaced too far apart, creating low spots that collect debris and restrict airflow. We re-strap at 4-foot intervals per SMACNA guidelines and replace collapsed sections with R-8 insulated flex rated for attic exposure.
- Rotobrush BD 2.0 and BD 4.0 brush system vacuum hoses wear through at elbows. The corrugated suction hose that runs from the port to the collection canister abrades where it contacts sharp duct edges during cleaning operations. We sleeve the contact point with a Guardsman abrasion guard or replace the hose section if the wire reinforcement is exposed.
- Rotobrush register boots separate from drywall in Hill Country homes with clay soil movement. Austin’s expansive soils shift the framing, breaking the seal between the metal boot and the ceiling or wall. We re-secure with toggle bolts and seal the gap with fire-rated caulk, then pressure-test the run to confirm no leakage.
- Rotobrush negative-pressure ports lose seal on rectangular metal duct. The rubber gasket on the 2-inch access port hardens in dry attic conditions and leaks during extraction. We machine a clean port seat and install a fresh gasket from Abatement Technologies, pressure-testing to 0.5 inches water column to verify.
Our Rotobrush Duct Repair & Sealing Process

- 1
Camera scope and written price. Tomas Reyes or a CleanRun technician pulls a camera through the plenum and every accessible duct run. You see the image on a tablet before we write the scope and price under Haven Standard Clause 1.
- 2
Parts decision: OEM or quality aftermarket. For Rotobrush-specific components like BD-series brush assemblies or Air+ collar kits, we source OEM when the part is available and the price is reasonable. For universal items like flex duct, mastic, or register boots, we use trade-grade aftermarket from Nikro or Abatement Technologies that meets or exceeds OEM spec.
- 3
Repair and seal. We repair or replace the failed component, seal all joints with mastic or fire-rated caulk as appropriate, and re-insulate any disturbed insulation with R-8 wrap.
- 4
Pressure test and airflow verification. We pressurize the system and check static pressure at the air handler, then verify airflow at each register with a calibrated anemometer. The numbers are recorded on your job sheet.
- 5
Photo record delivery and 365-Day Done Right Promise. You receive before-and-after photos of every duct run we accessed, plus the written scope, test results, and warranty documentation. If anything is not right, we make it right. Haven Standard Clause 5.
Before
AfterWhat Rotobrush Duct Repair & Sealing Costs in Austin
| Repair Type | Typical Range | What Moves the Price |
|---|---|---|
| Single register boot reseal and secure | $180 - $280 | Accessibility, drywall repair needed |
| Flex duct section replacement (one run, up to 25 ft) | $340 - $520 | Duct diameter, insulation R-value, attic access difficulty |
| Plenum collar replacement (Rotobrush Air+ series) | $290 - $440 | Metal vs. polymer replacement, mastic vs. tape seal |
| Full duct sealing with mastic (per system, typical 8-12 runs) | $1,200 - $1,800 | System size, percentage of metal vs. flex duct, accessibility |
| Negative-pressure port gasket replacement | $140 - $220 | Port count, whether port seat needs machining |
These are whole-system prices, not per-vent teaser rates. The price we write is the price you pay. Call (737) 243-9544 for a free estimate with an exact written number.
Why Austin Homeowners Call CleanRun Air Duct Cleaning Austin for Rotobrush Work

We’ve worked on Rotobrush systems in Austin since 2013, from the original BD units in Mueller redevelopment homes to the Air+ XP installs in new builds south of Slaughter Lane. Tomas Reyes learned duct fabrication at Bronx Community College and spent years in commercial HVAC before running CleanRun’s crew here. He’ll pull a camera scope before quoting anything. “Show the photo first, then talk about what needs to happen next.” Our technicians are background-checked and uniformed under Haven Standard Clause 3: Verified Crews. We also service Lennox, Trane, and Carrier duct systems, so if your Rotobrush is integrated with another brand’s air handler, we don’t need a second contractor. Every job carries the 365-Day Done Right Promise in writing, and we deliver a Documented Photo Record of every duct run as a standard deliverable, not an upsell.
FAQs
No. Rotobrush’s limited warranty covers defects in materials and workmanship on equipment they manufactured; it does not prohibit independent service on duct connections, seals, or flex runs that are separate from the mechanical unit. We document our work with photos and written scope so any future warranty claim on the equipment itself remains clear. If you have a specific warranty concern, bring your paperwork and we’ll review it before starting. Call (737) 243-9544.
Repair is viable when the damage is localized: a cracked collar, a single sagging flex run, or separated register boots. Replacement makes sense when multiple runs show deterioration, the original flex is pre-2000 and brittle, or static pressure tests show system-wide leakage above 15 percent. We measure and photograph both scenarios so you can see the difference. Call for a free estimate.
For proprietary components like BD-series brush assemblies or Air+ specific collars, OEM ensures fit and function. For universal materials like flex duct, mastic, or insulation, quality aftermarket from Abatement Technologies or Nikro meets the same specifications at a lower cost. We name the source of every part on your written scope before work starts. Haven Standard Clause 1.
Most single-point repairs, like a register boot reseal or flex run replacement, take two to three hours. A full system seal on an eight to twelve run house takes a full day. We schedule accordingly and confirm arrival time the day before. Call (737) 243-9544 to book.
Every CleanRun job includes a Documented Photo Record of every duct run we accessed, delivered as part of your standard job record. You see the before image, the after image, and the pressure test results. If a company cannot show you the inside of your own ducts, they did not document their work. This has been our practice since our first job in 2013.
Written by Tomas Reyes, Owner & Lead Technician, CleanRun Air Duct Cleaning Austin at CleanRun Air Duct Cleaning Austin, serving Austin and nearby areas.




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