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.
Abatement Technologies Air Duct Cleaning in Pasadena: What to Know First
We provide independent Abatement Technologies air duct cleaning throughout Pasadena, with most residential jobs completed in half a day and whole-system pricing given in writing before we start. A typical Pasadena home with an Abatement Technologies HEPA or media filtration setup runs between $450 and $900 for full supply and return duct cleaning, depending on square footage and how long it’s been since the last service.

This page is for Pasadena homeowners who own an Abatement Technologies system and want straight answers on what’s happening inside their ducts, what it costs to fix, and who to call. If that’s you, call (626) 469-5477 and you’ll get a live person, not a voicemail tree.
How Abatement Technologies Products Fail – and How We Fix Them
Abatement Technologies builds serious filtration equipment. We see their units in Pasadena homes, medical offices, and commercial spaces across the San Gabriel Valley. Here’s what actually goes wrong with the ductwork attached to them, and how we address it:
- HEPA-equipped systems with heavy pre-filter loading. Abatement’s HEPA-AIRE and Predator series move a lot of air, and the pre-filters catch the big stuff. When those pre-filters aren’t changed on schedule, the blower pulls harder and the duct system starts holding more debris. We find return ducts near Abatement air scrubbers packed with fine dust that made it past a clogged pre-filter. The fix is full return-side cleaning plus a conversation about the filter change interval for your specific model.
- Flex duct runs on older Abatement installs collapsing at bends. Homes near the Rose Bowl and deeper into Pasadena’s older neighborhoods often have Abatement filtration retrofitted onto original flex duct from decades ago. The extra static pressure from a high-efficiency filter can accelerate sagging in those runs. We document it with video, then clean what’s salvageable and tell you plainly if a section needs replacing.
- Mold growth in return plenums near Abatement units. Abatement air scrubbers pull hard, which means return air moves fast through the plenum. In Pasadena’s mix of wet winters and dry summers, condensation at the plenum seam creates a place where mold can take hold. We see this more on Abatement jobs than on standard furnace installs because of the sustained negative pressure. Our process includes antimicrobial treatment on affected surfaces after mechanical cleaning.
- Leaky duct joints causing pressure loss through Abatement filtration. An Abatement Technologies HEPA system only works as well as the ductwork feeding it. If supply-side joints leak, the filtered air doesn’t reach the rooms it’s meant for. We inspect seams, seal accessible joints with mastic, and test airflow before and after so you see the numbers change.
- Dust re-contamination from skipped post-filter cleaning. After a fire, renovation, or just years of Pasadena dust, Abatement unit internals can hold fine particles that keep blowing into the ducts after cleaning. We clean the duct system and recommend replacement of the final-stage filter at the same time, otherwise you’ll be calling us back in six months wondering why the dust came back.
Styles & brands we work with




Our Abatement Technologies Air Duct Cleaning Process
- 1
Call and talk to a live person. You call (626) 469-5477. We ask about your system, your home’s square footage, and what you’re seeing in the air or around the vents. We give you a written price before we schedule.
- 2
Arrive inside the window. Our technician shows up uniformed, background-checked, and with the equipment your job needs: Rotobrush rotary brush systems and Nikro negative-air machines, plus video inspection gear.
- 3
Inspect before we touch anything. We run a camera through the supply and return ducts so you see exactly what’s in there. No mystery work, no surprise findings after the fact.
- 4
Clean with negative-air containment. We seal registers, connect the negative-air unit, and run the rotary brush through the ducts. Debris is pulled to the collection point, not blown around your house.
- 5
Show you the after. Same camera, same runs. You see the difference before we pack up. If there’s something we couldn’t fix, Roy Castellanos will tell you straight.
- 6
Written guarantee. Every Abatement Technologies cleaning job we do in Pasadena is covered under our 365-Day Done Right Promise. If it’s not done right, we’re back at no charge.
See the difference
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After
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AfterWhat Abatement Technologies Air Duct Cleaning Costs in Pasadena
Here are honest ranges for the Abatement Technologies jobs we do most often in Pasadena:
- Full residential system (supply and return, single HVAC): $450 – $900 depending on home size, number of registers, and how long since the last cleaning.
- Return-side only, heavy dust or pet dander: $250 – $400. Common in Pasadena homes where the Abatement scrubber sits on the return side and the rest of the system stayed cleaner.
- Commercial or larger residential with multiple Abatement units: $1,200 – $3,000, scoped and priced per building after a walkthrough.
- Video inspection only: $99. Applied toward the cleaning cost if you book the work.
What moves the price: square footage, number of registers, accessibility of the duct runs, whether flex duct needs replacement, and whether mold treatment is required. The price we write down is the price you pay. Period. Call (626) 469-5477 for an exact quote on your Abatement Technologies system, free.
Why Pasadena Homeowners Call Hollis Air Duct Pasadena for Abatement Technologies Work
Roy Castellanos grew up in East Los Angeles and has been cleaning duct systems in Pasadena for over a decade. That includes plenty of older homes near the Rose Bowl where the ducts haven’t been touched since the Reagan administration and the Abatement filtration was added as an afterthought. He learned the mechanical side of HVAC at Los Angeles Trade-Technical College and did years of hands-on duct cleaning before going out on his own.
We carry professional-grade equipment from Rotobrush, Nikro, and filtration brands including Honeywell, Aprilaire, Abatement Technologies, and Guardsman. We’re also comfortable working around other systems you might have: Lennox, Trane, Carrier. Every job gets a written price before work starts, a uniformed technician who arrives inside the window, and a 365-Day Done Right Promise in writing. The ductwork doesn’t lie, and neither do we.
FAQs
We clean the duct system connected to your Abatement Technologies unit and tell you plainly what the unit itself needs, including filter replacement intervals specific to your model line. We do not service or modify the filtration unit’s internal electronics or motor, but we’ll point you to a qualified HVAC technician if the unit itself needs repair.
No. Duct cleaning does not void the warranty on your Abatement Technologies filtration equipment. We use non-invasive negative-air and rotary brush methods that don’t alter your ductwork or the unit. If we find a duct issue that needs sealing or replacement, we tell you before touching it and you approve the work in writing.
Most Pasadena jobs are scheduled within one to two weeks, depending on the season. You can reach a live person at (626) 469-5477 to check availability and get a written price over the phone.
Every 4 to 6 years for most Pasadena homes. Factors that shorten that interval: pets, recent renovations, wildfire smoke seasons, or if you run your Abatement filtration continuously. We’ll tell you honestly if the ducts don’t need cleaning yet. Roy’s known for telling customers what actually needs doing versus what can wait.
A teaser price gets a crew to your door and a bigger invoice after they look around. We give you a written price before we schedule, and it doesn’t change unless you add work or we find something structural we couldn’t see from the outside. The price we quote is the price you pay. Call (626) 469-5477 for a free estimate and you’ll see the difference.
Written by Roy Castellanos, Owner, Hollis Air Duct Pasadena at Hollis Air Duct Pasadena, serving Pasadena and nearby areas.