Whole-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 Duct Cleaning Cost in Houston?
Our Air Duct Cleaning services in Houston typically cost between $350 and $750 for an average home, with most single-family houses landing around $450 to $550. Larger two-story homes with multiple HVAC systems, heavy pet hair, or storm-related debris can run $700 to $1,200, while a straightforward single-system home under 2,000 square feet often comes in at the lower end. The number you actually pay depends on how many vents you have, how many systems you’re running, and how much Houston’s humidity and pollen have pushed into your ductwork since the last cleaning.
Before you call anyone, here’s the thing worth knowing: the price should be in writing before a single vent is touched. That’s how we’ve operated since 2004 under the Kingswell Guarantee. No door-step revisions, no “well, it’s worse than we thought” conversations after the technician has already pulled out the equipment.
Air Duct Cleaning Cost Breakdown (2026)
Here’s what Houston homeowners actually pay line by line. These are real market ranges for the metro area, not national averages pulled from a survey site.
| Service | Typical Range |
|---|---|
| Standard single-system home (up to 10 vents) | $350 - $500 |
| Single system, 11-15 vents | $450 - $650 |
| Two HVAC systems, 16-25 vents | $650 - $1,000 |
| Three-plus systems or 3,500+ sq ft homes | $950 - $1,400 |
| Heavy contamination (construction dust, rodent debris, water damage) | $800 - $1,600 |
| Dryer vent cleaning (add-on or standalone) | $125 - $225 |
| Main trunk line and plenum cleaning | $150 - $400 |
| Coil cleaning (evaporator accessible, add-on) | $100 - $250 |
What moves the number up: multiple HVAC systems, a duct system that hasn’t been touched in a decade, evidence of rodents or insects, recent renovation dust, or flexible duct runs that require slower, more careful brush work. What moves it down: a single-story ranch-style home, a system with accessible trunk lines, and a cleaning history that’s at least somewhat current.
One more line item worth flagging: if a company quotes you $99 or $149 as a flat rate, that price almost always covers a single trunk line or a “main vent sweep” that doesn’t touch the branch runs feeding individual rooms. Ask what’s actually included before you compare numbers. We hand you the full written quote on our home page’s estimate request form, and it covers every vent in the count we agreed on.
What Affects Air Duct Cleaning Pricing in Houston
National cost guides miss the local factors that push Houston duct cleaning higher than, say, How Much Does Air Duct Cleaning Cost in Las Vegas, NV? (2026 Price Guide). Here’s what actually drives the number here.
- Humidity and biological growth. Houston’s average relative humidity sits in the 70s most of the year. That moisture feeds mold and mildew inside ductwork, especially on the cool side of the system, and remediation takes longer than a straightforward dust extraction. In older homes near the Ship Channel and in Bellaire, we regularly find microbial growth on flex duct that a dry-climate homeowner would never see.
- Pollen load. Houston sits in one of the worst allergy corridors in the country. Oak, pecan, and ragweed pollen by the millions ride into return ducts every spring. Ducts that filter this load for three or four years hold a lot more debris than a comparable home in Phoenix or Denver.
- Number of HVAC systems. Most Houston homes built after 1995 have one system for the downstairs and a separate unit in the attic for upstairs. That’s two air handlers, two coil cabinets, and roughly double the vent count. The price follows.
- Duct material. Flexible duct (common in Houston attic runs) needs gentler brush agitation than rigid metal. Sheet-metal trunk lines in older bungalows inside the Loop can hold decades of buildup that takes longer to dislodge.
- Access. Attic-mounted air handlers in Houston’s summer heat slow a job down. So do low-clearance crawlspaces in older homes. Both add labor time. If the HVAC closet is crammed behind drywall, that’s a conversation before the technician starts, not after.
- Recent construction or renovation dust. Drywall dust from a kitchen remodel travels into every return duct in the house. Post-renovation cleanings cost more because the fine particulate clings to the duct wall and needs multiple passes to remove.
To be specific about one of those: in Katy and Cypress, where a lot of 1990s and early-2000s subdivisions have original flex duct in the attic, spring pollen plus attic heat bakes debris onto the duct interior. Those jobs regularly take 45 to 60 minutes longer than How Much Does Air Duct Cleaning Cost in Long Beach, CA? (2026 Price Guide) would estimate for the same square footage in a newer build with better-sealed returns.
What’s Actually Included at Each Price Point
Price is only meaningful when you know what’s being done. Here’s how the work breaks down at each tier.
Entry-level cleaning ($350 - $500)
Covers a single HVAC system with up to 10 vents. The technician performs brush agitation (a rotary brush spun through each duct run to knock debris off the walls) followed by negative-air extraction (a high-powered vacuum with the system under negative pressure so loosened particles get pulled out, not blown into your living room). We use Rotobrush rotary brush systems for the agitation and Nikro negative-pressure units for the extraction. Abatement Technologies HEPA filtration runs during the job to keep airborne particles out of your breathing space.
Mid-range cleaning ($500 - $800)
Adds a second system, more vents, or a heavier contamination load. This is where most Houston two-story homes land. You also typically get a supply-and-return register wipe-down and a visual inspection of accessible coil surfaces.
Heavy-duty cleaning ($800 - $1,600)
Reserved for homes with microbial growth, rodent evidence, post-water-damage debris, or duct systems that haven’t been serviced in a decade or more. It takes longer, may require a second visit, and a written scope matters here more than anywhere else. Ask for the guarantee in writing before you book. That’s the 365-Day Done Right Promise: if the work falls short within the guarantee period, we come back and make it right at no charge. It’s in writing on the invoice, and it’s been our standard since 2004, not a seasonal promotion.
How to Save on Air Duct Cleaning
A few practical moves that actually lower your bill, in Houston specifically:
- Schedule in the shoulder seasons. February and October are the slowest months for Houston HVAC work. Some companies won’t tell you that, but pricing pressure eases when the phones are quiet. Ask.
- Combine air duct and dryer vent cleaning in one visit. A dryer vent cleaning runs $125 to $225 on its own. Booking both together usually saves $50 to $100 because the equipment is already on site and the trip charge disappears.
- Change your filter before the technician arrives. A clogged filter means more debris has bypassed it into the ductwork. Starting with a clean filter can shorten the job.
- Fix the source first. If your return plenum has a gap that pulls attic air in, cleaning won’t hold. A $30 tube of mastic and a half hour of a handyman’s time can keep a $600 cleaning from needing a repeat in 18 months.
- Get two or three written quotes, then compare the scope, not the number. The cheapest quote is often the smallest scope in disguise.
- Ask about the guarantee up front. A written 365-day guarantee means a repeat visit costs you nothing if the work falls short. That’s not a discount, it’s insurance.
We give free estimates. Call (469) 972-3151 and we’ll ask seven or eight questions about your home, then put a dollar figure in your hands before any work is scheduled.
Repair vs. Replace: When Cleaning Isn’t the Answer
Cleaning is the right move when ducts are structurally sound and the buildup is organic (dust, pollen, light debris). It’s the wrong move when ducts are collapsing, waterlogged, or crushed. Torn flex duct in a Houston attic, crushed runs under a slab, or duct board that’s been wet since Harvey are all replacement conversations, not cleaning ones.
We’ll tell you which one you’re looking at during the estimate. That’s part of the Kingswell Way: say the price, show up in the window we gave, leave the place cleaner, put the guarantee in writing, come back if it fails. If a cleaning isn’t the right answer, saying so is the right answer.
Signs You Actually Need Duct Cleaning (and Not Just a Filter Change)
Not every dusty house needs duct cleaning. Here’s when it’s worth the money in Houston:
- Visible dust puffing out of supply registers when the system kicks on
- A musty or “wet attic” smell that shows up within 30 seconds of the AC running
- Recent renovation, water intrusion, or rodent activity
- Allergy symptoms that spike every time you’re home but ease when you travel
- It’s been more than five years since the last cleaning, and you’ve had pets the whole time
If none of those apply, a filter upgrade and a duct inspection may be all you need. We carry Honeywell, Aprilaire, and Guardsman filtration and indoor-air-quality products for homeowners who want to maintain clean air between service visits. A good filter is cheaper than a cleaning and will stretch the interval between visits.
Why Houston Homeowners Choose Kestrel
We’re part of the Kingswell family of companies, founded in 2004. Every job runs under the Kingswell Guarantee, which is a written price before work begins, a defined arrival window, a clean job site, and a written guarantee on the work. If the work fails inside the guarantee period, we return and fix it. Free. In writing.
Technicians are background-checked and uniformed. Calls are answered by a live person, 24 hours a day, not a voicemail queue and not a phone tree. Equipment is professional-grade: Rotobrush rotary brush systems for wall-to-wall debris agitation, Nikro negative-pressure units to pull contaminants out of the system, and Abatement Technologies HEPA filtration to keep dislodged particles out of your living space during the job. Names matter here because “we use professional equipment” isn’t a claim you can check, and “we use a Rotobrush and a Nikro” is.
Dale Whitmore leads our operation. If the team ever misses on a commitment, he’s the one who hears about it, which is how it should work.
FAQs - Air Duct Cleaning Cost
How much does air duct cleaning cost in Houston?
Most Houston homes fall between $350 and $750, with the median single-family cleaning landing around $450 to $550. Two-story homes with two HVAC systems typically run $650 to $1,000. Call (469) 972-3151 for a free written estimate specific to your home.
Is $99 air duct cleaning a real price?
No, not for a full-house cleaning. A $99 quote almost always covers a single trunk line, one main vent, or a “special” that only addresses a fraction of the system. The technician may then present a much larger number once on site. We put the full written price in your hands before any work begins. Call (469) 972-3151 to compare numbers honestly.
Can you clean my ducts the same day I call?
In many cases, yes. We answer the phone with a live person 24 hours a day, and same-day availability depends on the schedule and the size of the job. Most Houston-area jobs are booked within 24 to 72 hours of the call. Call (469) 972-3151 and we’ll tell you the earliest available window.
How often should I have my air ducts cleaned in Houston?
Every three to five years is the right interval for most Houston homes, and two to three years if you have pets, allergy sufferers, or a home older than 25 years. Houston’s humidity and pollen load push the timeline shorter than in dry climates. Call (469) 972-3151 and we’ll help you figure out whether you’re due.
Is it cheaper to repair or replace ductwork?
Cleaning is always cheaper than replacement when the ducts are structurally sound. A full cleaning runs $350 to $750 for most homes; partial duct replacement often starts at $1,200 and climbs from there. The right answer depends on condition, and we’ll tell you straight during the estimate. Call (469) 972-3151 to book a free evaluation.
Does cleaning the ducts really help with Houston allergies?
It helps when the ducts are the source. Houston’s pollen season runs long, and ducts that filter years of oak and ragweed pollen hold a reservoir that re-enters your air every time the system runs. Cleaning removes that reservoir, and pairing the cleaning with a higher-MERV filter and a Honeywell or Aprilaire filtration setup keeps the benefit going. Call (469) 972-3151 to talk through the right setup for your home.
Book a Free Written Estimate
If you’re comparing quotes and want a straight number, call Kestrel Air Duct Cleaning at (469) 972-3151. We’ll ask about your square footage, how many systems you run, how long it’s been since the last cleaning, and whether you’ve had pets, renovation dust, or water intrusion in the ducts. Then we’ll put a written price in your hands before we schedule a single thing. No pressure, no door-step revisions, and the 365-Day Done Right Promise in writing on every job. If you want to see what else we do, start on our home page, or ask about dryer vent cleaning while we’re already there.
Pricing reflects the Houston market as of 2026. Kestrel Air Duct Cleaning offers free estimates - call (469) 972-3151.
Written by Dale Whitmore, Owner at Kestrel Air Duct Cleaning, serving Houston since 2004.
What Our Customers Say
"Our dryer was taking two cycles to dry a load. They cleaned the vent and pulled out a frightening amount of lint. Dries in one cycle now and honestly I feel better about the fire risk."
- Marcus Lee"Set up an appointment for the whole house plus the dryer line. They called the morning of to confirm, showed up in the window, and showed me pictures of the gunk they pulled out. Worth it."
- Terrence Boyd"My wife's allergies were awful every morning. Had the ducts done and it's made a real difference. Tech was on time and wore booties in the house without me asking."
- Rob Pendergast