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.
The Hollis Air Duct Pasadena Guarantee
We’ve been cleaning ducts in Pasadena since 2004, and we’ve seen every way a job can go sideways. The fix is simple: we put it in writing before we start. You get a written price before any work begins, a crew that arrives inside the quoted window, and a job done by the book. If something fails within a year, we come back and make it right at no charge. That’s not a slogan. It’s the 365-Day Done Right Promise, and it’s on every invoice we hand a homeowner in Pasadena, Altadena, and the surrounding foothills.
What’s Covered
Every Hollis Air Duct Pasadena job includes these commitments, spelled out so there’s no gray area:
- 365-Day Done Right Promise. Every repair and cleaning is covered in writing for a full year; if the work fails, we return and fix it at no charge, including a free second visit.
- Written price before work starts. The number you agree to is the number you pay. No estimates that balloon once the technician is inside your home.
- On-time arrival inside the quoted window. We don’t keep you waiting half a day. The Garrison Code requires our technicians to show up when we said they would.
- Site left clean. When we leave, the only sign we were there is cleaner air. Drop cloths go down, debris goes out, and your floors look the way they did when we arrived.
- Background-checked, uniformed technicians. You know who is walking into your home before they arrive. Every technician Hollis sends has passed a background check and wears a uniform that identifies them.
- Professional-grade equipment. We run Rotobrush rotary brush systems, Nikro negative-air machines, and filtration products from Honeywell, Aprilaire, Abatement Technologies, and Guardsman. Same tools commercial crews use, not hardware-store gear.
- Live phone answers, 24/7. Calls answered by a live person, no voicemail loops, no callback queues. If you need us at 9 p.m. on a Sunday, a person picks up.
Styles & brands we work with




Our Satisfaction Promise
If you’re not satisfied with the work, we don’t argue. You call, we come back. The 365-Day Done Right Promise means every job is covered for a full year, and the second visit is free. No negotiation, no fine print, no “well, that’s technically not covered.” We look at what went wrong, we fix it, and we leave it right. That’s the whole process. Roy Castellanos, the owner of Hollis Air Duct Pasadena, trains the crew on one rule above all: if it’s not done right, it’s not done. That’s it.
Here’s what that looks like in practice. Say we seal a section of ductwork in a 1920s craftsman in Bungalow Heaven, and six months later you notice dust building up around a register that should be sealed. You call. We schedule the return visit. We inspect the seal, re-apply mastic if needed, and confirm the airflow with a pressure reading. You pay nothing. That’s the promise working the way it’s supposed to.
Licensed & Insured Backing
Licensing and insurance are the real guarantee behind the paperwork. If a company isn’t insured and something goes wrong on your property, you’re the one holding the bill. We carry insurance and bonding so a Pasadena homeowner never has to think about that. If a technician gets hurt on your property, that’s on our policy, not yours. If something gets damaged, it’s covered. We don’t wave this around as marketing. It’s there so you can hand us the keys to your crawlspace and not think twice.
The licensing side matters just as much. It means our technicians train on current safety standards, our equipment meets code, and our work gets inspected the way it should. We’re happy to show you our credentials when we arrive. Ask. A real company answers.
See the difference
Before
After
Before
After
Before
AfterWhat The Garrison Code Requires
Every Hollis location operates under The Garrison Standard, and the Garrison Code is what our technicians actually follow on a job. Four rules, no exceptions:
- Arrive inside the quoted window. If we say 9 to 11, we’re there by 11.
- Price in writing before work starts. You see the number, you approve the number, that’s the number.
- Complete the job by the book. No shortcuts, no skipped steps, no “good enough.”
- Leave the site clean. No dust piles, no equipment left behind, no surprise messes.
These aren’t aspirational. They’re the minimum standard for every technician who wears the Hollis uniform in Pasadena. If a technician misses any of these, the job gets flagged and corrected before we consider it closed.
Why We Put It In Writing
Most air duct cleaning complaints come from the same three places: a low teaser price that balloons at the door, a technician who never actually cleans the full system, or a company that vanishes the moment you try to call about a problem. The written guarantee removes all three. You know the price before we start. You can see the work we did, because we’re happy to show you before-and-after photos. And if something fails inside a year, the phone number on your invoice still rings to a live human being who schedules your free return visit.
That’s the difference between a guarantee that lives on a website and one that lives on your invoice. Ours is on your invoice. If you want to know exactly what duct cleaning in Pasadena costs, call Hollis Air Duct Pasadena at (626) 469-5477 and we’ll give you a written quote before anyone sets foot in your home. Free estimates, no pressure, no surprises.
Frequently Asked Questions
It covers every repair and cleaning we perform for a full year from the date of service. If the work fails, we return and make it right at no charge, including a free second visit. If you’re not sure whether your issue is covered, call us at (626) 469-5477 and we’ll talk through it honestly.
Yes. Every cleaning is covered by the 365-Day Done Right Promise. If you notice dust returning quickly or registers still blowing debris after we’ve cleaned, we come back and re-clean the affected areas at no charge. Call (626) 469-5477 and we’ll schedule the return visit.
We’re insured and bonded, and damage claims go through our policy, not your homeowners insurance. Tell the technician before they leave, or call us at (626) 469-5477, and we start the process immediately. We don’t drag it out.
Yes. The price we write down before work starts is the price you pay. If we find something unexpected during the job, we stop, explain what we found, show you the issue, and get your approval before doing anything else. The price never moves without your okay. Call (626) 469-5477 for a written quote on any service we offer.
Written by Roy Castellanos, Owner at Hollis Air Duct Pasadena, serving Pasadena and the surrounding foothills since 2004.