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 Air Duct Cleaning in Pasadena: What to Know First
Rotobrush air duct cleaning in Pasadena typically costs $380 to $680 for a full residential system, depending on the number of returns, the amount of debris, and access. We’re an independent Rotobrush service provider, not a factory affiliate, and we use Rotobrush rotary brush and HEPA vacuum systems to clean duct work in homes across Pasadena, Altadena, and San Marino. Most jobs are completed in one visit, usually 3 to 5 hours. If you own a home with Rotobrush equipment or ducts that were originally installed with Rotobrush tools, this page explains exactly how we approach the work, what it costs, and why our written price doesn’t move after we start. Call us at (626) 469-5477 for a free estimate.

Key Takeaways
- Full Rotobrush air duct cleaning in Pasadena typically runs $380-$680, priced before work starts
- We’re independent, not factory-affiliated, and we carry Rotobrush, Nikro, and Abatement equipment
- Rotobrush isn’t a duct brand – it’s a rotary brush cleaning system many Pasadena homes have had used on their ducts over the years
- Every job gets a written price and our 365-Day Done Right Promise
- Systems that haven’t been cleaned in 10+ years often take longer and cost more, not less
Styles & brands we work with




How Rotobrush Products Fail – and How We Fix Them
Rotobrush systems don’t fail the way a furnace or condenser does. They’re not sitting in a closet waiting to break. The issues we see with Rotobrush-cleaned ducts in Pasadena are about what the system leaves behind, how the tools wear, and what happens when someone runs a brush through a duct that hasn’t been touched in 20 years. Here’s what we see on a regular basis:
- Flex duct tearing from aggressive brush contact. The Rotobrush R2 and SR-Series rotary brush systems spin a nylon or poly brush at high speed through the duct. In older flex duct, especially the gray plastic-lined runs common in 1980s Pasadena homes near the Rose Bowl, that spinning brush can snag a brittle liner and tear it. We see this on returns and supplies both. Our fix is to inspect first with a camera, then reduce brush speed on fragile runs, and repair any tears with code-approved duct mastic before cleaning continues.
- Debris left behind in low spots. Rotobrush systems use an integrated vacuum to pull loosened debris back through the hose. But on long runs or poorly supported flex duct, the vacuum can’t always grab everything. What’s left sits in the low spots of the duct and re-contaminates the system within months. We check for this with a video inspection after cleaning, then re-run affected sections at lower speed with a Nikro negative-air machine pulling from the register side. That’s the difference between a duct that looks clean and one that is clean.
- HEPA filter wear on older Rotobrush machines. The Rotobrush aiR+ and other models use HEPA filtration on the vacuum side. When a Rotobrush machine has been used hard for years, that filter loads up and the unit starts pushing fine dust back into the room instead of capturing it. We use our own Rotobrush and Nikro equipment so you get clean filtration, and if we see your system has been serviced by a machine with a worn filter, we’ll tell you what we found and what needs vacuuming around the registers and return plenum.
- Return-side contamination from skipped returns. Some Rotobrush owners only clean the supply ducts and put off the returns because they’re harder to access. That’s exactly wrong. Returns pull air into the system, and in Pasadena homes with wall cavities used as return chases, the return side is often worse than the supply side. We clean both, every time, and we show you before-and-after photos of both sides. A Rotobrush job that skips returns isn’t a Rotobrush job – it’s half a job.
- Dust and debris re-blown through the system after cleaning. This is a house-wide problem, not a machine problem. If the crew doesn’t block off unused registers and seal the plenum before running the brush, loosened debris can circulate into rooms instead of being pulled back through the vacuum. We seal and block off registers as part of every job. It adds time, and it’s why our price is what it is. But it means you don’t get a dust cloud in the living room when we’re done.
Our Rotobrush Air Duct Cleaning Process
Every Rotobrush job we do in Pasadena follows the same sequence. No surprises, no skipped steps. Here it is:
- 1
Call and written estimate. You call (626) 469-5477, we ask about your system: age, number of returns, any known issues. You get a written price before we show up. That price doesn’t change.
- 2
Video inspection. We don’t clean blind. We run a camera through the ducts first to check for tears, low spots, blockages, and what’s actually in there. If a duct is damaged, we show you the footage and tell you what it means before anything runs through it.
- 3
Register seal-off and plenum isolation. All registers except the one we’re working on get blocked off and sealed. The plenum is covered so loosened debris can’t blow back into the house. This is the step a lot of crews skip, and it’s the difference between cleaning and rearranging dust.
- 4
Rotary brush cleaning with HEPA vacuum. We run the Rotobrush rotary brush system through each supply and return, with the vacuum pulling debris back through the hose. On fragile flex runs, we slow the brush down. On returns, we clean from the grille side and the plenum side where possible.
- 5
Negative-air pass on stubborn sections. If the video showed heavy buildup or low-spot debris, we follow with a Nikro negative-air machine pulling air from the register side while the brush works. This gets what the Rotobrush vacuum alone can’t reach.
- 6
Post-clean video and walkthrough. We show you the after video, walk through what we did, and leave the site clean. Every job is covered by our 365-Day Done Right Promise in writing: if it’s not done right, we come back at no charge.
See the difference
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After
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AfterWhat Rotobrush Air Duct Cleaning Costs in Pasadena
Here’s what you can expect to pay for Rotobrush air duct cleaning in Pasadena, based on the typical system size and condition we see across the city:
- Single-story home, 4-8 registers, 1 return: $380-$480
- Two-story home, 8-14 registers, 2 returns: $480-$620
- Older Pasadena home with brittle flex duct and heavy buildup: $550-$680
- Commercial or multi-return system: $680-$950, priced per system after the video inspection
- Duct repair (mastic, torn flex, loose connections): $95-$250 per affected section, quoted before we touch it, only if the video shows damage
What moves the price: number of returns, access to the plenum, how long since the last cleaning, and whether we need to repair tears before cleaning. What doesn’t move the price: the technician’s mood, the time of day, or how nice the house is. We hand you a written number before work starts, and that’s the number. Call (626) 469-5477 for an exact quote. The estimate is free.
Why Pasadena Homeowners Call Hollis Air Duct Pasadena for Rotobrush Work
Roy Castellanos grew up in East Los Angeles and learned the mechanical side of HVAC systems at Los Angeles Trade-Technical College before going out on his own. He and his crew have been cleaning duct systems in Pasadena for over a decade – including plenty of older homes south of the 210 and near the Rose Bowl that haven’t had their ducts touched since the Reagan administration. The duct work doesn’t lie – and neither do we. What you get with us: a written price before work starts, background-checked and uniformed technicians, a video inspection before and after, and our 365-Day Done Right Promise in writing. If the work fails within a year, we come back at no charge, including a free second visit. We also work on systems running Lennox, Trane, and Carrier equipment, so if your Rotobrush-cleaned ducts feed a furnace or air handler from any of those brands, we know how the whole system fits together. Every Hollis location is independently owned and operated under The Garrison Standard, and The Garrison Code governs how our technicians behave on a job: arrive inside the window, price in writing, do the job by the book, leave the site clean.
FAQs
It depends on the condition of the duct work, and that’s exactly why we video-inspect before running any brush through. Older flex duct in Pasadena homes built in the 1970s and 1980s can be brittle, and a high-speed rotary brush can tear it. We slow the brush down on fragile runs, inspect as we go, and repair any tears with duct mastic. If the video shows duct work that’s too far gone to clean safely, we’ll tell you that and recommend sealing or replacement before cleaning. Call (626) 469-5477 and we’ll walk you through what your system can handle.
Because they’re not cleaning the same system you have. A $99 whole-house duct cleaning quote is built on skipping steps: no video inspection, no register sealing, no return cleaning, no negative-air pass. The crew shows up, runs a brush through a few supply ducts, and leaves. What you paid for is a dust rearrangement. Our price is higher because we do the job by the book. The price is written down before we start, and it doesn’t move. If you’ve had a cheap cleaning before and your ducts are still dirty, call (626) 469-5477 and we’ll show you what’s actually in there.
We hand you before-and-after video of the inside of your ducts, along with the written guarantee. You’ll see the same duct sections on camera before we clean and after we clean. If the after footage doesn’t match what we told you, you don’t pay. The 365-Day Done Right Promise covers every Rotobrush job we do: if the work fails within a year, we come back at no charge, including a free second visit. That’s written on every job, not a verbal assurance. Call (626) 469-5477 and ask for the video inspection before you commit to anything.
For most Pasadena homes, every 3 to 5 years. If you have pets, run your system year-round, or live near construction or heavy tree cover (Altadena and the foothill areas especially), 2 to 3 years. The honest answer is that some homes can go longer. Roy is known for being straight with customers about what actually needs doing versus what can wait – if your ducts don’t need cleaning, we’ll tell you that and send you on your way. Call (626) 469-5477 for a straight answer and a free estimate.
Rotobrush manufacturer parts cover the machine itself. For the duct work we clean and repair, the question is about mastic, flex duct, and sealants – and we use code-approved materials, not hardware-store shortcuts. When it comes to replacement parts for any Rotobrush equipment we run, we maintain our own machines with OEM filters and brushes where available, because a worn brush or loaded HEPA filter does a worse job and can push dust back into your home. The equipment you rent by hiring us should be as clean as the ducts we’re cleaning. Call (626) 469-5477 and we’ll explain what equipment we’ll use on your system and why.
Written by Roy Castellanos, Owner, Hollis Air Duct Pasadena at Hollis Air Duct Pasadena, serving Pasadena and nearby areas.