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 HVAC Cleaning in West Covina: What to Know First
Rotobrush HVAC cleaning in West Covina typically runs $450 to $850 for a full system clean, and independent Rotobrush service providers like us can usually complete the job in 3 to 5 hours. We are an independent Rotobrush service provider, not a factory-authorized shop, which means we make parts and repair decisions based on what actually works best for your system and your budget, not what a manufacturer mandates. This page is for Rotobrush owners in West Covina who want straight answers about their equipment, what it costs to clean it properly, and how to avoid the bait-and-switch pricing that plagues this trade. Call (424) 688-1845 and you will reach a live person who can quote your specific Rotobrush system.

How Rotobrush Products Fail – and How We Fix Them
Rotobrush builds solid rotary brush cleaning systems and air duct machines, but after years of running them across West Covina homes, we see the same failure patterns repeat. Here is what we encounter most, what causes it, and how we address it.
- Rotobrush aiR+ and RotoStorm series: brush head bearing seizure. The brush head bearings on the aiR+ and RotoStorm lines pick up fine dust and pet hair, and once that debris works into the sealed bearings, the brush stops spinning freely and starts dragging. The symptom owners notice is a high-pitched whine from the unit during operation and uneven cleaning results. We disassemble the brush head, replace the bearings with sealed aftermarket units that actually hold up better than the factory originals, and reassemble with fresh lubrication. Cost is a fraction of replacing the whole brush assembly.
- Rotobrush Viper and Air-Cobra hoses: interior liner collapse. The flexible vacuum hoses on the Viper and Air-Cobra lines are reinforced with an internal spiral liner that degrades over time, especially when the units sit in hot West Covina garages during summer. When that liner collapses, suction drops by half and the machine starts leaving debris behind. We inspect the full hose run, identify the collapsed section, and replace only what is needed. Most West Covina homes need between 10 and 25 feet of hose, not a full reel.
- Rotobrush HEPA filtration canisters: gasket failure at the canister seam. The HEPA canister on older Rotobrush units seals with a foam gasket that hardens and cracks after a few years of heat cycling. When that gasket fails, the machine blows fine dust back into the room it is supposed to be cleaning. This is a real health concern, not just an equipment issue. We replace the gasket with a high-temperature silicone version and test the seal with a smoke pencil before we call the job done.
- RotoStorm vacuum motor carbon brush wear. The vacuum motors on Rotobrush RotoStorm units run hot, and the carbon brushes inside the motor wear down predictably. The symptom is intermittent suction, the motor cutting out mid-job, or a burning smell. We replace carbon brushes as a wear item, check the commutator for scoring, and if the motor is beyond saving, we install a compatible aftermarket motor rather than paying OEM markup for the same unit.
- Rotobrush control panel and switch failures. On the aiR+ series specifically, the rocker switches and the variable-speed dial are the weak points. Dust infiltration, not electrical overload, is the usual culprit. We clean the contacts, replace failed switches, and where the factory sealed the panel against dust poorly, we add a bead of foam weatherstripping to keep it from failing again. It is a five-dollar fix that prevents a two-hundred-dollar repair.
Styles & brands we work with




Our Rotobrush HVAC Cleaning Process
Every Rotobrush cleaning we do in West Covina follows the same sequence, whether it is a single evaporator coil or a full system with the blower, air handler, and condenser. Here is how it works.
- 1
Call and describe your system. You tell us which Rotobrush model you own, what you are seeing or hearing, and where the system lives. We quote a provisional range and book your window through The Relay Standard, which means a live trackable arrival time, not a four-hour guess.
- 2
Arrival and diagnostic run. Our technician arrives in uniform, introduces themselves by name, and runs the unit through a full diagnostic cycle. For Rotobrush systems, that means checking brush head rotation speed, vacuum suction in inches of water column, filter condition, and hose integrity.
- 3
Written price before any work starts. We hand you a line-item price for the cleaning or repair, including parts. That price does not change at the door, period. If the diagnostic turns up something unexpected, we stop and discuss it with you before touching anything further.
- 4
The cleaning or repair itself. We use Rotobrush brush systems for agitation and Nikro HEPA-rated vacuums for negative-pressure extraction, which means loosened debris goes straight into the vacuum, not back into your living room. Any containment work uses Abatement Technologies equipment.
- 5
Post-job testing and before-and-after photos. We run the unit again, verify suction and airflow numbers, and photograph the before and after so you can see exactly what was cleaned and what changed. The photos are yours.
- 6
Guarantee and invoice. Every repair carries a written guarantee, and every job carries the 365-Day Done Right Promise. Your invoice arrives as a digital link you can pay from your phone. If anything is not right within 365 days, we return and correct it at no charge.
See the difference
Before
After
Before
After
Before
AfterWhat Rotobrush HVAC Cleaning Costs in West Covina
Here are honest price ranges for the Rotobrush jobs we handle most often in West Covina. These are whole-job prices, not teaser rates that multiply once we are on site.
- Evaporator coil cleaning: $180 to $340, depending on access. Coils buried in a tight closet air handler run higher than easy-access attic units.
- Blower wheel and housing cleaning: $150 to $280. A blower caked with years of West Covina dust takes longer to pull, clean, and reinstall.
- Condenser coil cleaning: $120 to $220 for a standard outdoor unit. We flush, degrease, and rinse, and we check refrigerant pressures while we are there.
- Air handler full clean: $300 to $550, including coil, blower, drain pan, and sanitizer treatment.
- Heat exchanger cleaning: $200 to $400, depending on access and how much carbon and scale has built up.
- Full system cleaning (coil, blower, handler, condenser): $450 to $850 for a typical West Covina tract home, more for two-story homes with multiple returns.
What moves the price is access, system size, and how long it has been since the last cleaning. A Rotobrush owner who runs the unit monthly and replaces filters will pay less than someone cleaning three years of neglect. Call (424) 688-1845 for an exact quote on your system. Estimates are free, and the price we quote is the price you pay.

Why West Covina Homeowners Call Cardinal Air Duct West Covina for Rotobrush Work
We have cleaned Rotobrush systems in the subdivisions near South Hills Country Club, the older tract homes off Azusa Avenue, and plenty of condos along the 10 corridor. What those jobs have in common is that the homeowner wanted a real price before work started and proof of the work after it was done. That is the Relay Standard, and we do it on every single job. Our techs run Rotobrush equipment daily, they carry Nikro HEPA vacuums and Abatement Technologies containment units, and they know the difference between an aiR+ brush head and a RotoStorm motor issue without checking a manual. We also service HVAC systems from Lennox, Trane, and Carrier, so if your cleaning turns up a broader system issue, we can address it in the same visit. Clean ducts, straight answers, no surprises on the invoice.
FAQs
Yes, we service the full Rotobrush line, including the aiR+, RotoStorm, Viper, and Air-Cobra series. Our techs have hands-on experience with each model family, and we stock or can quickly source parts for all of them. Call (424) 688-1845 with your model number and we will confirm same-week availability.
No, using an independent Rotobrush service provider for cleaning and maintenance does not void a factory warranty. In fact, most Rotobrush warranties require regular cleaning and maintenance to remain valid. We document every job with before-and-after photos and a written service record, which helps you keep your warranty intact. Call (424) 688-1845 and we will walk you through what your specific warranty requires.
You get before-and-after photos of every component we touch, from the evaporator coil to the blower wheel to the return ducts. The Relay Standard gives you a live trackable arrival time, photo documentation, and a digital invoice you can pay from your phone. If you doubt the work for any reason within 365 days, we return and correct it at no charge under the 365-Day Done Right Promise.
Lower quotes almost always come from companies that quote a base price and add per-vent or per-component fees once they arrive, or from shops that skip the HEPA vacuum and blow debris into your home. We give one written price for the entire system before any work starts, and we use professional-grade Nikro HEPA extraction equipment. If a quote looks too cheap, ask what is not included. Then call (424) 688-1845 for an honest number.
In West Covina, with our dry summers, Santa Ana winds, and the fine dust that blows in from the foothills, we recommend a full HVAC cleaning every 2 to 3 years. Homes with pets, recent construction, or residents with allergies should lean closer to every 18 to 24 months. We will tell you if your system needs it sooner or can wait, based on what the diagnostic run shows. Call (424) 688-1845 to schedule a cleaning and get a written price the same day.
Written by Omar Haddad, Owner, Cardinal Air Duct West Covina at Cardinal Air Duct West Covina, serving West Covina and nearby areas.