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 Houston Guarantee
Here’s what our guarantee means in plain terms: the price we quote is the price you pay, written down before a single tool comes off the truck. If our work fails within a year, we come back and fix it at no charge. No fine print, no pro-rated nonsense, no “that’s a different problem” runaround. We’ve been doing this since 2004, and Houston homeowners have long memories. The guarantee is only as good as the company willing to put it in writing on every single job. We do. Roy Castellanos signs off on the standard himself, because it’s his name on the side of the van.
What’s Covered
- Workmanship, backed for a full year. The 365-Day Done Right Promise covers every repair and cleaning we perform, in writing.
- If it fails, we return free. A second visit is included automatically if something goes wrong within the coverage period, no negotiation required.
- Pricing stays put. The number on your written quote does not move once the technician is inside your home.
- Cleanup is part of the job. We leave the site clean, drop cloths picked up and vacuumed, no dust trail through your hallway.
- On-time arrival, inside the window. The Garrison Code requires we arrive when we say we will, and call if anything changes.
- Technicians you can verify. Every tech is background-checked and uniformed, so you know who’s walking into your home.
Styles & brands we work with




Our Satisfaction Promise
If a homeowner isn’t satisfied with the work, we don’t hand over a customer service script. We send someone back. Here’s the process: call us at (713) 936-5800, describe what’s wrong, and we schedule a return visit at no charge under the 365-Day Done Right Promise. That second visit is part of the deal from day one, not a favor we’re doing you. Roy’s rule on this is simple: if we didn’t get it right the first time, the burden is on us to make it right, not on you to prove anything. We inspect the issue, correct it, and document what was done so you have a record. No arguing, no gatekeeping, no “that’s not covered” unless we can show you exactly why in writing. Houston is a city where word travels fast through neighborhoods like The Heights, Meyerland, and Clear Lake. We’d rather earn the next call than win an argument.
Licensed & Insured Backing
A guarantee is paper until something goes wrong. That’s why the real backing is our licensed and insured status, verified and current. Insurance protects your home and property while we’re working inside it, and licensing means we answer to the state’s standards, not just our own. We carry the coverage because Houston homes range from 1920s bungalows in Montrose to new builds in Katy and Cypress, and every duct system presents different risks. You should never hire a duct cleaner who cannot show proof of insurance and licensing before setting foot in your attic. We provide ours without being asked. Between the written pricing, the 365-day guarantee, and the licensed and insured standing, you have three layers of protection before we ever cut into the first vent.
See the difference
Before
After
Before
After
Before
AfterThe Garrison Code: How Our Technicians Work
Every Hollis Air Duct Houston technician works under The Garrison Code, a set of operational rules that has governed how Garrison Partners companies operate since the beginning. The code has four parts. First, arrive inside the quoted window. Second, put the price in writing before any work starts. Third, complete the job by the book, no shortcuts. Fourth, leave the site clean, as if we were never there except for the cleaner air. That’s not marketing language. It’s the standard our techs are evaluated on, and it’s the standard Roy enforces on every job. If a technician misses the window or leaves a mess, the guarantee process kicks in just as it would for a faulty repair.
What the 365-Day Done Right Promise Actually Covers
Let’s be specific, because vague “satisfaction guaranteed” language helps no one. The 365-Day Done Right Promise covers the workmanship of every service we perform. If a duct seal fails, a vent comes loose, or a cleaning job reveals itself to have missed sections, we schedule a free return visit within the year and make it right. The promise does not cover normal accumulation of dust a year after a cleaning, damage caused by unrelated issues like a roof leak pouring into a duct, or systems that were already compromised before we arrived and documented as such. We spell this out at the time of the quote so there are no surprises later. If you’re ever unsure whether something falls under the promise, call (713) 936-5800 and ask. A live person answers, and you’ll get a straight answer.
Why a Written Price Matters in Houston
Houston’s duct cleaning market has a reputation problem, and it’s earned. Homeowners get a flyer promising a cheap whole-house cleaning, then the technician arrives and suddenly there’s mold remediation, sanitizing treatments, and a bill three times the quoted figure. That’s not how we work. The price you receive before the job is the price on the invoice after. We use professional-grade equipment from Rotobrush, Nikro, and Abatement Technologies, and filtration products from Honeywell, Aprilaire, and Guardsman. None of that means a lower-quality job done for a teaser rate. What it means is we know our costs, we quote them honestly, and we don’t play the bait-and-switch game that gives this industry a bad name. The written price is your first and best protection against becoming another Houston horror story.
Frequently Asked Questions About Our Guarantee
The 365-Day Done Right Promise covers our workmanship for a full year from the date of service. If a repair or cleaning fails within that window, we return at no charge. The second visit is included automatically, written into the original agreement.
Call us at (713) 936-5800 and tell us what’s wrong. We schedule a return visit under the guarantee, inspect the issue, and correct it. There’s no charge for the second visit, and we document what was done so you have a record.
Our guarantee covers our workmanship. Any parts or filtration products we install are backed by their manufacturer warranties, and we handle the coordination if a part fails. We’ll walk you through exactly what’s covered before we install anything.
Yes. We’re licensed and insured, and we provide proof before any job starts. It’s not something we hide behind a website claim. Ask the technician when they arrive, and they’ll show you.
Because they’re selling a teaser rate, not a real job. The low number gets them in the door, and the invoice grows from there. We quote one honest price for the whole system, in writing, before work begins. If a quote seems too good to be true in Houston, it usually is.
Written by Roy Castellanos, Owner at Hollis Air Duct Houston, serving Houston since 2004.