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.
Aprilaire Air Duct Cleaning in Pasadena: What to Know First
Air duct cleaning for homes with Aprilaire filtration systems in Pasadena typically runs $450 to $900 for a full system, depending on square footage, duct condition, and how long it’s been since the last cleaning. We’re an independent Aprilaire service provider, not a factory-authorized dealer, which means we answer to you, not a corporate warranty department. Most jobs are done in 4 to 7 hours, and the price is written down before we touch a single vent.

This page is for Pasadena homeowners who run Aprilaire whole-home air purifiers, filters, or dehumidifiers and want their ductwork cleaned without a bait-and-switch invoice. If that’s you, call (626) 469-5477 and ask for Roy. I’ll tell you straight what you need and what you don’t.
How Aprilaire Products Fail – and How We Fix Them
- Aprilaire 5000 electronic air cleaner plates collect more than dust. The 5000 series uses electrically charged collection plates upstream of the duct branches. Those plates trap fine particulates, but the stuff that gets past them? It deposits on duct walls as a hard, baked-on film. In Pasadena’s dry heat, that film cures like plaster. We don’t just brush coils; we remove the plates, clean the housing, and soften that baked layer with our negative-air process before the rotary brush touches the ducts. Skip that step and you’re just polishing over hardened crud.
- Aprilaire media filters (213, 413, 513) leave a dust signature when they’re run too long. These are great filters, but Pasadena owners run them past the 12-month mark. As the media clogs, air velocity drops, and heavier particles settle in the return trunks. We know this pattern, and we check the filter drawer clearance before quoting. A clogged filter we recommend replacing before cleaning, otherwise we’re cleaning against a pressure head that just re-deposits debris after we leave.
- Aprilaire 1830 and 1850 dehumidifiers pull moisture, then dust clumps in the return plenum. Dehumidified air makes dust heavier and stickier. Combine that with the fine silt that blows in from the San Gabriel foothills and you get what we call “caked duct shoulder” right where the return meets the dehumidifier. It’s a Pasadena-specific problem because of our wind patterns. Our negative-air machines pull that out without pushing it back into the living space.
- Aprilaire 5000/6000 series control boards collect dust that leads to arcing. When an electronic air cleaner’s control board gets coated in conductive dust, you hear popping sounds, and the unit trips its breaker. Pasadena homes with older knob-and-tube wiring still in use near the equipment closet see this more than newer builds. We point it out during the video inspection. We don’t repair boards, but we tell you before it fails so you can plan.
- Aprilaire 700/760/768 humidifiers leave mineral crust that dries and sheds into the supply ducts. Pasadena water is hard. Bayless-level hard. When the humidifier pad cures with scale and flakes, those mineral chips ride the airstream into your clean ducts and settle in the boots. We clean the duct runs, then pull the humidifier pad and brush out the distribution tray. Most companies won’t touch it because Aprilaire doesn’t list it as a cleaning point. We do because we’ve seen what it drops.
Styles & brands we work with




Our Aprilaire Air Duct Cleaning Process
Here’s what happens when you call Hollis Air Duct Pasadena for a home with Aprilaire equipment:
- 1
Call and talk to a human. You reach us live at (626) 469-5477. We ask square footage, number of returns, whether you have an Aprilaire electronic air cleaner or a media filter, and when the ducts were last touched. You get a written price range before we schedule.
- 2
Arrive inside the window, uniformed and background-checked. You know who’s walking in your door. We check the Aprilaire unit first, the filter condition, and the plenum connection before we lay a single drop cloth.
- 3
Video inspection. We snake a camera into the return and supply trunks. You see what we see, including the Aprilaire-specific buildup I described above. We record before-and-after footage so you never have to wonder if the work happened.
- 4
Rotary brush and negative-air cleaning. We use Rotobrush rotary brush systems and Nikro negative-air machines. The brush agitates. The negative air pulls. The Aprilaire filter media gets removed and set aside, not blasted with debris. When we’re done, we reinstall the filter or let you know it’s time for a new one.
- 5
Clean-up and walkthrough. Floors covered the whole time, boots and shoes covers on, tape lifted without residue. We walk you through the video and then we leave. The site is as clean as we found it, or cleaner. That’s The Garrison Code, and it’s not optional.
- 6
365-Day Done Right Promise in writing. If the cleaning fails within a year, meaning the problem returns in a way our work should have prevented, we come back at no charge. That includes a free second visit. It’s in writing on every job.
See the difference
Before
After
Before
After
Before
AfterWhat Aprilaire Air Duct Cleaning Costs in Pasadena
Real numbers, not teaser prices:
- Single system, 1,200 – 1,800 sq ft home: $450 – $600
- Two-story or 2,000 – 3,000 sq ft home: $600 – $800
- Home with Aprilaire dehumidifier plus electronic air cleaner: $700 – $900
What moves the price: number of returns, duct accessibility (crawlspace vs. attic), how many Aprilaire components need extra attention, and how long since the last cleaning. What doesn’t move the price: a technician’s mood, the neighborhood you live in, or how much he thinks you can spend. We write it down before we start. Call (626) 469-5477 for a free estimate. The number we give you is the number you pay.
Why Pasadena Homeowners Call Hollis Air Duct Pasadena for Aprilaire Work
Roy Castellanos has been cleaning duct systems in Pasadena for over a decade, including plenty of older homes near the Rose Bowl that haven’t had their ducts touched since the Reagan administration. He learned the mechanical side of HVAC at Los Angeles Trade-Technical College, then spent years hands-on before going out on his own. When it comes to Aprilaire, our crew knows the units well enough to work around them without damaging them or voiding your warranty. We’re also familiar with Lennox, Trane, and Carrier systems sitting alongside the Aprilaire gear, so when the blower cabinet needs attention during a cleaning, we’re not out of our depth. The duct work doesn’t lie, and neither do I. Since 2004, we’ve run this operation on The Garrison Standard: arrive inside the window, price in writing, do it by the book, leave it clean. Every job carries the 365-Day Done Right Promise. If it fails within a year, we come back at no charge. That’s the whole deal.
FAQs
No. We remove the filter media, the electronic air cleaner plates, or the humidifier pad before cleaning begins, and we reinstall them properly afterward. The Aprilaire warranty is not tied to us being an authorized dealer. Keeping ducts clean and airflow unrestricted actually helps your Aprilaire equipment run the way it was designed to. If you’re unsure about your specific warranty terms, call (626) 469-5477 and we’ll tell you what we see and what we recommend before any work is done.
Every 3 to 5 years for most homes. If you run an Aprilaire 5000 electronic air cleaner, you may be able to stretch that closer to 5 years because the plates capture more before it enters the ducts. If you have pets, do remodeling, or live near the foothills where wind kicks up fine dust, lean toward 3 years. The best way to know is a video inspection. We’ll show you what’s actually in there, not what a marketing chart says should be in there.
Because they’re bait. A low per-vent price, or a “$99 whole house special,” gets the van in your driveway. Then the technician finds “mold,” “rodent damage,” or “crumbling ducts,” and the price balloons. We don’t play that. Our quote is a whole-system price, not a per-vent teaser. What we write down is what you pay. Call (626) 469-5477 for a real number before we ever step inside your home.
We record video of your ducts before and after. You see the buildup, you see it gone. You don’t have to trust our word. You see the footage of your own return trunks and supply branches. If you can’t tell the difference, we didn’t do the job, and the 365-Day Done Right Promise means we come back and re-do it at no charge. That’s the only way Roy Castellanos and our crew operate.
Yes, with building approval. Many Pasadena condo buildings have shared duct runs or fire dampers, so we coordinate with the property manager on access. The work itself is the same, and the written price still holds. If you’re in a condo or apartment with an Aprilaire system, call (626) 469-5477 and we’ll walk through what your building allows and what it doesn’t.
Written by Roy Castellanos, Owner, Hollis Air Duct Pasadena at Hollis Air Duct Pasadena, serving Pasadena and nearby areas.