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 Dallas Guarantee
In Dallas, we’ve seen what happens when a duct cleaning company treats your home like a drive-thru window. A van shows up, a technician runs a shop vac through a couple of vents for twenty minutes, hands you a bill, and disappears. That’s not how we work, and it never has been. Our guarantee is simple: the price we write down before the job starts is the price you pay when we’re done. The work we do is covered by our 365-Day Done Right Promise. If it fails within a year, we come back and make it right at no charge. That’s the whole thing. No fine print, no phone tag, no “we’ll see what we can do.” Roy Castellanos owns this business, and he stands behind every job with his name on it.
What’s Covered
- Workmanship for a full year. Every repair we make is covered in writing by the 365-Day Done Right Promise, and if something fails, we return and fix it at no charge.
- Written pricing before we touch a vent. The number on the sheet is the number you pay, regardless of what the technician finds once the Rotobrush system opens the first return.
- Free second visit if a repair fails. That’s included in the promise, not a negotiated add-on. If we didn’t get it right, we’re back on our dime.
- Site left clean. Our technicians run negative-air machines so dust doesn’t redistribute through your home, and they sweep up before the van doors close.
- On-time arrival inside the quoted window. The Garrison Code requires it, and if we miss the window, you’ll hear from us before you have to call.
- Background-checked, uniformed technicians. You’ll know who is walking into your Dallas home before they arrive, and they’ll be accountable for the work from start to finish.
- Professional-grade equipment, not hardware-store gear. Rotobrush rotary brush systems, Nikro negative-air machines, and filtration products from Honeywell, Aprilaire, Abatement Technologies, and Guardsman.
Styles & brands we work with




Our Satisfaction Promise
If you’re not satisfied with the work, we don’t argue with you. We come back. The 365-Day Done Right Promise means exactly what it sounds like: for a full year after the job, if a repair we made fails, Hollis Air Duct Dallas returns at no charge and makes it right. That includes a free second visit, which isn’t something you have to ask for. It’s included in writing on every job we do in Dallas.
Here’s how it works. You call us and tell us what’s wrong. A live person answers the phone, 24 hours a day, 7 days a week. We schedule the return visit inside a window we actually keep. The technician shows up with the same professional-grade equipment, diagnoses the issue, and fixes it. You pay nothing. That second visit is on us. Roy Castellanos runs this business with a simple rule: the job isn’t done until you say it’s done. If you’re not happy, neither are we, and we’ll keep working until we both agree the system is right.
Licensed & Insured Backing
A written guarantee only matters if the company behind it is still around to honor it. We’re licensed and insured in the state of Texas, and we’ve been operating in Dallas since 2004 as part of the Garrison Partners family. That’s more than two decades of standing behind our work in this city, through every HVAC season North Texas throws at us. Insurance means if something unexpected happens on the job, you’re protected. Licensing means we’re accountable to the state, not just to our own promises. And the Garrison Standard, which every location follows, requires that we arrive inside the quoted window, put pricing in writing, complete the job by the book, and leave your home clean. That’s the real guarantee: not a piece of paper, but an operational standard we’ve been held to for over twenty years.
See the difference
Before
After
Before
After
Before
AfterWhat the 365-Day Done Right Promise Covers in Plain Terms
The name says most of it, but here’s the plain-English version for Dallas homeowners. You schedule air duct cleaning, dryer vent cleaning, or duct sealing with us. Before any work starts, you get a written price and an explanation of what we’ll do. We do the work with professional equipment. If any repair we made during that job fails within 365 days, you call us. We come back at no charge, including a free second visit. We fix it. The work is covered in writing on every job, not implied, not verbal, not “trust us.” It’s on the paperwork you get before we start.
This applies to the repairs we make. It’s not a maintenance plan, and it’s not insurance on your entire HVAC system. It’s a workmanship warranty: if our repair fails, we own it, and we fix it. Roy Castellanos has been running service businesses long enough to know that the only guarantee that matters is the one you actually honor when something goes wrong. That’s the kind of guarantee we’ve built this company on since 2004.
What Our Technicians Are Required to Do on Every Job
Every Hollis Air Duct Dallas technician works under what we call the Garrison Code. It’s not a slogan in a training manual; it’s the operational standard we measure ourselves against. Here’s what it means when a technician pulls up to your Dallas home:
- Arrive inside the quoted window. If we say between 9 and 11, the van is in your driveway between 9 and 11. If traffic or weather interferes, we call before the window closes.
- Put the price in writing before any work starts. Not a range, not an estimate that balloons at the door. A firm number, written down, agreed to before equipment comes off the truck.
- Do the job by the book. That means the right equipment for the condition of your ducts, the right negative-air containment so dust doesn’t blow through your house, and the right materials for sealing, including mastic where appropriate.
- Leave the site clean. Floors swept, vents replaced, no debris in the hallway, no dust on the furniture. We treat your home like we’d treat our own.
- Answer questions in plain English. If we use a rotary brush system on your supply ducts, we’ll tell you what it does and why. If we recommend duct sealing, we’ll explain what mastic is and how it stops air loss in your specific system. No jargon, no upselling games.
Why We Guarantee the Work in Writing
Because in this trade, talk is cheap and promises are easier to make than they are to keep. The air duct cleaning industry in Dallas has plenty of companies that will undercut a price, rush a job, and vanish when you call about a problem. We’ve built our whole business as the answer to that. The 365-Day Done Right Promise exists because you should never have to hope a contractor stands behind his work. You should have it in writing, on paper, signed before the first vent is opened. That’s what we do, and that’s what we’ve done for Dallas homeowners since 2004. If we’re not confident enough in the work to warranty it for a year, we shouldn’t be doing it in your home at all.
Frequently Asked Questions About Our Guarantee
It covers every repair we make during the job. If a repair fails within a year, we return and fix it at no charge, including a free second visit. The full scope is written out on the paperwork you receive before work begins. Call (361) 309-6223 and we’ll walk you through exactly what’s covered for your specific system.
You call us. A live person answers, 24 hours a day. We schedule a return visit inside a window we keep, and the technician fixes the issue at no charge. The second visit is included in the promise, not negotiated after the fact. Roy Castellanos doesn’t consider the job done until you do.
Yes. We’re licensed and insured in the state of Texas, and our technicians are background-checked and uniformed. If you’d like to see proof of insurance before we start work, just ask when you call (361) 309-6223.
The price is written down before any work starts, and it does not move at the door. Nobody adds vent fees, filter fees, or “we found extra dust” fees once the technician is inside. The number on the sheet is the number you pay. That’s been the rule at Hollis Air Duct Dallas since 2004.
Written by Roy Castellanos, Owner at Hollis Air Duct Dallas, serving Dallas since 2004.