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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.
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AfterHow Much Does Air Quality & Sanitizing Cost in Houston?
Air quality and sanitizing services in Houston typically cost between $295 and $750 for a full-home treatment, depending on square footage, system access, and the sanitizing method used. Most Houston homeowners pay around $425 for a standard 2,000 to 2,500 square foot home using a fogging or electrostatic disinfection process. The price you pay comes down to whether you’re treating just the ductwork, adding a coil cleaning, or going with a whole-system approach that includes UV light installation.
At Hollis Air Duct Houston, every quote is written down before any equipment comes off the truck. That means the number you agree to is the number on the invoice – no surprises after we open the plenum. We’ve operated this way under The Garrison Standard since 2004, and it’s one of the reasons Houston homeowners call us back when their system needs attention again.
This guide breaks down exactly what air quality and sanitizing costs in the Houston market in 2026, what drives those numbers, and how to avoid paying for services you don’t need. If you want a specific quote for your home, call (713) 936-5800 and a live person will answer – 24 hours a day, 7 days a week.
Key Takeaways
- Full-home air quality and sanitizing in Houston runs $295 to $750, with most homes in the $400 to $500 range.
- Square footage is the single biggest pricing factor, followed by whether you’re adding coil or blower treatment.
- UV light installation is a separate line item: $450 to $1,100 installed, depending on the unit.
- Hollis Air Duct Houston writes every price down before work starts and backs the job with a 365-Day Done Right Promise.
- Free estimates are available by calling (713) 936-5800 – no obligation, no pressure.
Air Quality & Sanitizing Cost Breakdown (2026)
Here’s what you can expect to pay for air quality and sanitizing services in the Houston area this year. These numbers reflect what we see across Harris, Fort Bend, and Montgomery counties – places like Katy, Sugar Land, The Woodlands, Cypress, Pearland, and the Heights.
| Service | Typical Houston Price Range | What It Includes |
|---|---|---|
| Basic duct sanitizing (fogging) | $295 – $450 | Antimicrobial fog through supply and return ducts, register wipe-down |
| Full duct sanitizing + coil treatment | $400 – $600 | Everything above plus evaporator coil cleaning and sanitizing |
| Whole-home electrostatic disinfection | $500 – $750 | Ducts, coils, blower assembly, and all register openings |
| UV light installation (standalone) | $450 – $1,100 | UV-C lamp installed at evaporator coil, including labor and materials |
| Air scrubber or ionization unit | $600 – $1,400 | Active purification unit installed in supply plenum |
| Dryer vent sanitizing add-on | $75 – $125 | Antimicrobial treatment through dryer exhaust line |
Those ranges reflect single-family homes between 1,500 and 3,500 square feet. Homes larger than 3,500 square feet, or homes with two systems, run on the higher end – sometimes $900 to $1,200 for a full two-system treatment with coil cleaning included.
At Hollis Air Duct Houston, we use professional-grade equipment from Nikro and Abatement Technologies for negative-air and fogging work. That’s not hardware-store gear. It’s the same class of equipment commercial crews use in hospitals and office buildings across Houston, and it means the sanitizing agent gets where it needs to go instead of just misting the first few feet of duct.
What Affects Air Quality & Sanitizing Pricing in Houston
Six things move the needle on what you’ll pay. Here they are, in plain terms.
- Square footage and system count. A 1,400 square foot ranch in Oak Forest costs less than a 4,200 square foot two-story in Memorial with dual systems. More duct means more time and more sanitizing agent.
- Condition of the ductwork. If your ducts have visible mold growth or heavy dust buildup, the sanitizing step needs to follow a full cleaning. In homes near the Ship Channel or along Katy Freeway corridors, we regularly see heavier particulate buildup, which adds work before the sanitizing even starts.
- Access to the air handler. Houston homes put air handlers in some tight places – attics in Meyerland, closets in newer builds in Bridgeland, crawl spaces in older parts of Galveston County. Harder access means more labor time, and labor is a real cost line.
- Whether you add coil treatment. The evaporator coil is where condensation collects, and in Houston’s humidity, that coil stays wet most of the year. Treating the coil separately adds $100 to $200, but it’s often the difference between a surface-level treatment and one that actually reduces biological growth.
- Type of sanitizing method. Basic fogging costs less than full electrostatic disinfection. UV systems cost more upfront but provide ongoing treatment rather than a one-time application. We carry Honeywell, Aprilaire, and Guardsman units and can explain the difference in plain English before you commit.
- Time of year and demand. Spring and early fall are peak allergy seasons in Houston, and more homeowners schedule air quality work then. It doesn’t change our pricing – we quote written numbers no matter the season – but booking ahead helps with scheduling flexibility.
Is Air Quality & Sanitizing Worth the Cost in Houston?
Houston’s combination of high humidity, long cooling seasons, and the occasional load of Saharan dust or wildfire smoke makes this one of the more demanding cities for indoor air. Your AC system moves more air in a year than systems in most of the country, and that air isn’t clean to begin with.
The EPA has noted for years that indoor air can carry more concentrated pollutants than outdoor air, and in a city where you keep the house sealed against the heat for 8 months, that concentration builds. Sanitizing addresses biological growth – mold, mildew, bacteria – on surfaces inside the system. It doesn’t replace filtration, but it reduces what’s living in the ductwork and on the coil.
What it doesn’t do is replace good housekeeping. A sanitized system with a clogged filter is still a dirty system. We’re direct about that: if your filter’s been ignored, we’ll tell you. The sanitizing treatment works best on a system that’s been cleaned and has good airflow. That’s how Air Quality & Sanitizing in Houston is designed to work in sequence with our duct cleaning service, not in place of it.
We started serving Houston in 2004 as part of the Garrison Partners family, and in that time we’ve seen what works long-term. A one-time fog through the ducts helps. A cleaned system with a properly treated coil and a decent filter lasts. That’s the honest difference, and it’s reflected in how we quote each job.
How to Save on Air Quality & Sanitizing
Saving money here isn’t about finding the cheapest bid. It’s about not paying for things you don’t need and not getting hit with add-on charges at the door. Here’s how to keep costs in line.
Get the price in writing before work starts. If the quote you get over the phone isn’t the price on the invoice, you’re dealing with the wrong contractor. Hollis Air Duct Houston writes every price down before any work begins. That’s The Garrison Standard, and it’s how we’ve operated for 21 years.
Bundle sanitizing with duct cleaning. Combining services on the same visit saves on labor compared to booking them separately. If your ducts haven’t been cleaned and you’re asking for sanitizing, doing both at once is the most cost-effective path.
Don’t pay for mystery “premium” treatments. Some companies charge extra for a “hospital-grade” or “VIP” sanitizing package without telling you what chemical or process they’re using. Every product we use has a name and a label – and we’ll show you before we fog a single vent.
Replace your filter on schedule. A system with a clean filter and good airflow needs less work over time. That’s not sanitizing-specific, but it reduces how much accumulates in the duct in the first place.
Ask about the warranty in writing. If the company can’t put a guarantee on paper, keep looking. Our 365-Day Done Right Promise covers the job for a full year. If it fails, we come back and make it right at no charge – including a free second visit.
For a free estimate with no pressure and no moving price at the door, call (713) 936-5800. We answer 24/7 – a live person, not a voicemail tree.
FAQs – Air Quality & Sanitizing Cost
How much does air quality and sanitizing cost in Houston?
Plan on $295 to $750 for a typical Houston home. A basic duct fogging runs $295 to $450, while a full electrostatic treatment of the entire system runs $500 to $750. Homes with two AC systems or over 3,500 square feet can reach $900 to $1,200. Call (713) 936-5800 for an exact written quote – estimates are free.
Is UV light installation included in sanitizing costs?
No – UV light installation is separate and typically runs $450 to $1,100 installed in Houston. The UV lamp sits at the evaporator coil and works continuously rather than as a one-time treatment. We install Honeywell, Aprilaire, and Guardsman units, and the price includes labor and all materials. If you want UV plus a full sanitizing treatment, ask about bundling both on the same visit to save on labor.
How long does air quality sanitizing take?
A full-home sanitizing treatment for a 2,000 square foot Houston home takes 2 to 3 hours from start to finish. That includes setup with negative-air containment, running the fogger or electrostatic unit, and cleanup. Larger homes with two systems can take 4 to 5 hours. We arrive inside the quoted window and leave the site clean – that’s part of The Garrison Code every technician follows.
Is air quality sanitizing a one-time thing, or do I need it regularly?
For most Houston homes, sanitizing is most effective once a year, especially right before or after the high-humidity season. If someone in the home has severe allergies or the system has shown mold growth in the past, twice a year is common. We’ll give you a straight answer on frequency based on what we see in your system – not a sales script.
What’s the difference between a $295 fogging and a $600 coil treatment?
The $295 to $450 basic fogging treats the interior duct surfaces with an antimicrobial mist but doesn’t address the evaporator coil. The $400 to $600 option includes coil cleaning and treatment, which matters more in Houston because the coil stays wet most of the year and is where most biological growth happens. For many homes, the coil is the part that actually needs attention. Call (713) 936-5800 if you want help deciding which level fits your system.
Pricing reflects the Houston market as of 2026. Hollis Air Duct Houston offers free estimates – call (713) 936-5800.
Written by Roy Castellanos, Owner at Hollis Air Duct Houston, serving Houston since 2004.
What Our Customers Say
"Dryer vent was packed with lint and took two hours to dry a load. Cleaned it out from the roof cap down. One cycle again."
- Paula Q."Duct sealing along with the cleaning cut our summer bill. Straight talk and fair price."
- Gwen O."Crew arrived in uniform at the exact time promised. Covered the floors, cleaned all the supply and return vents, and brushed out the main trunk. Vet-owned, and it shows in the discipline."
- Duane S.