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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Before
AfterHow Much Does HVAC Cleaning Cost in San Antonio?
HVAC cleaning in San Antonio typically costs between $299 and $799 for a standard single-family home, with most jobs landing around $400 to $550 when the system is moderately soiled and no major repairs are needed. That range covers a full air duct cleaning – negative-pressure extraction on every supply and return run, camera documentation before and after, and a written price delivered before any panel comes off the unit.
If you’ve seen $79 coupons circulating online or in local mailers, that price does not describe HVAC Cleaning services – it describes a marketing tactic. We’ll explain what actually goes into a real job, what drives the number up or down in the San Antonio market specifically, and what a fair written price should include.
HVAC Cleaning Cost Breakdown (2026)
The table below reflects what CleanRun quotes in writing for San Antonio homes in 2026. Every line item is a real deliverable, not a line on an invoice that disappears when the tech walks out the door.
| Service Component | Typical Price Range (San Antonio, 2026) | What’s Actually Included |
|---|---|---|
| Air Duct Cleaning – Small Home (under 1,500 sq ft, 1 system) | $299 – $399 | Negative-pressure extraction, all supply and return runs, before/after photos of every duct run, written scope and written price |
| Air Duct Cleaning – Mid-Size Home (1,500 – 2,800 sq ft, 1 system) | $399 – $549 | Same as above; typical for Stone Oak, Alamo Ranch, and Helotes homes built in the 1990s-2000s with standard flex duct layouts |
| Air Duct Cleaning – Large Home (2,800 – 4,500 sq ft or 2 systems) | $549 – $799 | Both air handling units, full duct tree on each system, plenum inspection, documented photo record for every run on both systems |
| Dryer Vent Cleaning (add-on or standalone) | $99 – $179 | Full lint extraction from the duct interior, camera check at the exterior termination cap, documented before/after |
| Sanitizing / Antimicrobial Treatment (EPA-registered) | $75 – $150 | Applied after cleaning; covers interior duct surfaces; particularly relevant for San Antonio homes with mold-favorable attic conditions |
| Duct Sealing (per accessible section, mastic or foil tape) | $125 – $350 | Common in San Antonio slab-on-grade homes with older flex duct connections at the plenum; documented in writing before and after |
| Evaporator Coil Cleaning (add-on) | $150 – $250 | Coil face cleaning with approved coil cleaner; critical in San Antonio’s high-humidity cooling season when bio-film builds quickly on wet coil surfaces |
| Second Opinion on a Competitor Quote | Free | Bring any written estimate; CleanRun puts its own number next to it in writing – no strings attached |
A few numbers to anchor the range: San Antonio homes in neighborhoods like Sonterra, Dominion, and Leon Valley that were built between 1998 and 2015 with builder-grade flex ductwork often have 14 to 22 individual duct runs per system. A two-story home in Fair Oaks Ranch with two HVAC systems might carry 38 runs total. The labor time alone on that job is meaningfully different from a 900-square-foot rental unit near Lackland. Both jobs are documented and written-price-quoted – they just don’t cost the same, and any company quoting the same flat fee for both is leaving one of those customers underserved.
What Affects HVAC Cleaning Pricing in San Antonio
- Number of duct runs and system size. This is the primary cost driver. Each supply run requires individual negative-pressure extraction and a camera pass before and after. A typical 2,000-square-foot home in Alamo Heights might have 16 runs on a single system; a newer build in Cibolo at 3,200 square feet with two zones can have 30 or more. More runs means more labor, more photographic documentation, and a higher quoted price – and that price is stated in writing before work begins.
- Duct material and age. San Antonio’s housing stock skews toward flex duct installed on slab-on-grade construction, which is common in neighborhoods built during the 1980s through 2000s building booms in areas like Converse, Universal City, and Schertz. Flex duct collapses, sags, and accumulates debris at every low point. Sheet metal duct systems – more common in 1960s and 1970s homes in Terrell Hills and older Monte Vista stock – take longer to access and clean properly but hold up better to the process. Ductboard systems require more care to avoid surface damage and are typically quoted at the higher end of the range.
- Last cleaning date and debris load. In San Antonio’s climate, HVAC systems run hard – cooling season often stretches from April through October, and the system is drawing air continuously through that period. A home that hasn’t had its ducts cleaned in 8 to 12 years, or one that was recently renovated (drywall dust is dense and travels far into duct runs), will have a heavier debris load. When the camera shows a 2-inch or 3-inch debris layer at the first elbow off the plenum, extraction time increases proportionally. That’s reflected in the quote, in writing, before work starts.
- Attic conditions and duct accessibility. San Antonio attics are brutal from May through September, and duct runs in those attics take real labor time to access. Homes with low-clearance attics, blown insulation over duct connections, or ductwork that was buried during additions – common in older Helotes and Boerne-area properties – require more time to expose, photograph, and properly seal after cleaning. That time is factored into the written scope.
- Evaporator coil condition. The evaporator coil sits at the air handler and is the first surface conditioned air touches after leaving the ductwork. In San Antonio’s high-humidity cooling season, bio-film and microbial growth on the coil face is not unusual – especially in homes where the system runs at lower thermostat setpoints for long daily cycles. If the coil needs cleaning, that’s a separate line item quoted in writing before we touch it. A dirty coil left uncleaned after a duct cleaning undercuts the whole job within one cooling season.
- Add-on services: dryer vents, sanitizing, and duct repair. Dryer vent cleaning is a separate scope item – the ductwork, tools, and camera pass involved are different from air duct cleaning, and the price reflects that. Sanitizing with an EPA-registered antimicrobial treatment adds cost but is worth considering in San Antonio homes with documented moisture intrusion or visible growth at registers. Duct sealing – mastic or foil-tape repair at disconnected joints – is priced per section and documented with photos. None of these are bundled invisibly into a flat rate; each appears as its own line on the written quote.
BeforeAfterHow to Save on HVAC Cleaning in San Antonio
The most reliable way to spend less on HVAC cleaning is to spend the right amount on the right job – not to chase the lowest number on a coupon. Here’s what that looks like in practice.
Get a written price before agreeing to anything
This is non-negotiable. Any company that walks into your home and gives you a price higher than the ad after looking at your system is using a bait-and-switch model that’s been well-documented in Texas consumer protection complaints. CleanRun’s written price is delivered before any panel comes off – Haven Standard Clause 1. You know the number, you approve the number, and the number doesn’t change unless you add scope in writing. Call (726) 600-7155 and a written estimate goes out before anyone shows up.
Ask for a second opinion on any written quote you’ve already received
CleanRun offers a free second opinion on any written estimate from a competitor. Bring the number. We put our own next to it in writing. If our price is higher, we can explain exactly why. If it’s lower, same thing. There’s no obligation and no pressure. That offer stands for any San Antonio homeowner who’s been quoted by another company – whether you ultimately book with us or not.
Combine services on the same visit
Dryer vent cleaning booked alongside an air duct cleaning typically costs less than scheduling it as a separate visit because the crew and truck are already on-site. Same applies to evaporator coil cleaning or sanitizing. These aren’t hidden upsells – they’re line items on a written quote. If you want them, they’re itemized. If you don’t, they’re not added.
Don’t clean more often than the system needs it
The EPA and NADCA both note that air duct cleaning isn’t a fixed annual requirement – the right interval depends on your home’s specific conditions. In San Antonio, a home with pets, recent renovation work, or a system that showed visible debris at registers during the last inspection might benefit from cleaning every 3 to 4 years. A newer home with a well-maintained system and good filter discipline might go 5 to 7 years. An honest written assessment after a camera inspection will tell you where your home sits. Cleaning before it’s needed doesn’t improve air quality; it just moves the billing cycle up.
Maintain your filter discipline between cleanings
In San Antonio’s dusty, cedar-heavy air environment, MERV-8 to MERV-11 pleated filters checked monthly will meaningfully reduce the debris load that reaches your duct runs. That directly affects how much work the next cleaning involves – and how much it costs. Honeywell and Aprilaire whole-home filtration systems, which CleanRun installs, take this further by filtering at a higher efficiency level than most standard 1-inch filter slots allow.
What Does a Real HVAC Cleaning Actually Include?
This question matters because the $79-to-$99 coupon services circulating in the San Antonio market – and they are everywhere – do not describe what most homeowners picture when they hear “HVAC cleaning.” Understanding what a professional job includes is the fastest way to evaluate any quote you receive.
A legitimate HVAC Cleaning in San Antonio covers, at minimum: a camera inspection of accessible duct runs before work begins (so you can see what’s there before anyone claims to have cleaned it), negative-pressure extraction applied to each individual supply and return run (not a shop-vac passed over the registers), a documented photo record of each run before and after extraction, cleaning or inspection of the air handler cabinet, and a written scope and price delivered before any of this starts.
Negative-pressure extraction means the technician creates a vacuum at the main trunk or plenum using a HEPA-filtered collection unit – CleanRun uses Nikro and Rotobrush equipment, which you can look up independently – and then agitates debris loose at each register with a contact-cleaning brush or air-whip tool, driving it toward the vacuum rather than back into the living space. The difference between this and vacuuming at the register opening is visible in the before-and-after photos. That’s the point of the photos.
The plenum is the main distribution box directly attached to the air handler. It’s where most of the debris accumulates first, and it’s the section most commonly skipped by budget-tier operators who are in and out in under an hour. A camera pass of the plenum interior before and after extraction is part of CleanRun’s standard documented photo record on every job.
Learn more about what to expect on a full service visit on our home page.
San Antonio-Specific Factors That Affect Your HVAC System
San Antonio’s climate and housing stock create a specific set of conditions that affect how HVAC systems accumulate debris and what a cleaning job involves. These are worth knowing before you book any service.
Cedar season is real and it affects your ducts. Mountain cedar (Ashe juniper) pollinates heavily from December through February across the Hill Country edge of the metro – Boerne, Helotes, Leon Valley, and neighborhoods along Highway 16 see some of the highest pollen counts in the country during that window. Cedar pollen is fine enough to pass through many standard filters and accumulate inside duct runs. Homes in northwest San Antonio that have never had their ducts cleaned often show a visible yellowish-tan layer in camera inspections done in March or April, right after peak cedar season closes.
Slab-on-grade construction and its duct implications. Unlike most northern markets, San Antonio homes are almost entirely slab-on-grade – there are no basements and very few crawl spaces. Ductwork runs through attic spaces that reach 140 to 160 degrees Fahrenheit in August. That thermal stress accelerates the deterioration of flex duct connections, and disconnected or partially detached duct runs at the plenum or at register boots are a common finding in homes built between 1985 and 2005 in neighborhoods like Woodstone, Westover Hills, and Lackland Terrace. A duct cleaning that includes a camera inspection will catch these disconnections; one that doesn’t often won’t.
High humidity and coil bio-film. San Antonio’s humidity levels during the cooling season – regularly in the 65 to 80 percent range from May through September – create ideal conditions for microbial growth on evaporator coil faces. A coil that runs wet for 10 hours a day during a San Antonio summer will accumulate bio-film faster than the same unit would in Phoenix or Denver. If the last service on your system didn’t include a coil inspection, that’s worth asking about on the next visit.
Renovation activity in 78209, 78212, and older inner-loop zip codes. Alamo Heights, Olmos Park, and the historic neighborhoods inside Loop 410 have seen significant renovation activity over the past decade as buyers update older housing stock. Drywall dust, insulation particles, and construction debris introduced during a renovation travel deep into duct runs and, left uncleaned, recirculate through the home’s living spaces every time the system runs. Post-renovation duct cleaning is one of the most straightforward cases where the camera inspection tells an unambiguous story.
FAQs – HVAC Cleaning Cost in San Antonio
How much does HVAC cleaning cost in San Antonio in 2026?
HVAC cleaning in San Antonio costs between $299 and $799 for most single-family homes, with the majority of jobs in the $399 to $549 range for mid-size homes on a single system. Homes over 2,800 square feet or with two systems typically fall between $549 and $799. Every CleanRun quote is delivered in writing before work starts – call (726) 600-7155 for a written estimate specific to your home’s square footage and system count.
Is $79 duct cleaning a real offer or a bait-and-switch?
In almost every documented case in the San Antonio market, $79 “whole-house duct cleaning” advertisements are structured so the price increases significantly once the technician is inside the home. Texas HVAC consumer complaint filings consistently name this model. A legitimate cleaning of a 2,000-square-foot home – covering 14 to 20 individual duct runs with proper equipment, camera documentation, and written scope – takes 2 to 4 hours of labor and the use of professional-grade equipment. That job does not cost $79. If you’ve received a quote in that range and want a written comparison, CleanRun’s free second-opinion offer applies – bring the written estimate and we’ll put our number next to it.
How often should HVAC ducts be cleaned in San Antonio?
Most San Antonio homes benefit from a professional cleaning every 3 to 5 years, though the right interval depends on your specific conditions. Homes with pets, recent construction or renovation, documented moisture issues, or residents with allergies or respiratory sensitivities often need more frequent cleaning. Homes with excellent filter maintenance and no pets may comfortably go 5 to 7 years. Cedar season and San Antonio’s long cooling-season runtime accelerate debris accumulation relative to milder climates. A camera inspection is the only honest way to determine where your system sits – the before photos don’t lie. Call (726) 600-7155 and we can walk through what to look for before you commit to any schedule.
Does HVAC cleaning actually improve air quality?
Yes, when the cleaning is performed with proper equipment and covers every duct run. The EPA notes that duct cleaning can help reduce dust, allergens, and debris recirculating through the system, but it qualifies that finding by noting the job must be done correctly to be effective. A shop-vac at the register face doesn’t clean the run – it moves surface debris a few inches. Negative-pressure extraction using a HEPA-filtered collection unit – the method CleanRun uses with Nikro and Rotobrush equipment – draws debris the full length of the run toward the collection unit. The before-and-after camera photos show the difference in terms that don’t require any interpretation. Customers who’ve had a prior “cleaning” with a budget operator and then had a camera-documented cleaning with proper equipment typically don’t need to be convinced twice.
What’s included in CleanRun’s written price?
Every CleanRun written quote includes negative-pressure extraction on all accessible supply and return duct runs, a camera inspection before and after each run, a documented photo record delivered to the customer as part of the standard job record, and the 365-Day Done Right Promise – in writing, on every job. If anything is not done right within 365 days of the service date, we make it right. No manager approval required, no policy exceptions. The written price also identifies any additional scope items – dryer vent cleaning, evaporator coil cleaning, sanitizing, or duct repair – as separate line items. Nothing gets added to the job without appearing on the written quote first. That’s Haven Standard Clause 1, and it applies to every job CleanRun takes.
Key Takeaways
- HVAC cleaning in San Antonio costs $299 to $799 for most homes; the $399 to $549 range is most common for mid-size single-system homes.
- Every CleanRun quote is written and delivered before any work begins – Haven Standard Clause 1. No exceptions.
- The documented photo record – inside every duct run, before and after – is a standard deliverable on every job, not an upgrade.
- San Antonio-specific factors (cedar season, slab-on-grade duct layout, high-humidity coil conditions, renovation activity in inner-loop neighborhoods) affect debris load and cleaning scope.
- $79 coupon offers in the San Antonio market are not HVAC cleanings. The written second-opinion comparison is free – call (726) 600-7155.
- The 365-Day Done Right Promise is written into every job. If it’s not right, CleanRun makes it right.
Get a Written Estimate for Your San Antonio Home
If you want to know exactly what HVAC cleaning will cost for your specific home – square footage, number of systems, last service date, any known issues – call (726) 600-7155. A live person answers every call, and a written estimate goes out before any work is scheduled. There’s no “call for a quote and we’ll figure it out when we get there.” The price is in writing before anyone knocks on your door.
If you’ve already received a written estimate from another San Antonio HVAC cleaning company, bring it. CleanRun’s free second-opinion offer means we put our written number next to theirs – no obligation, no pressure, no strings. Tomas Reyes built CleanRun on the position that a customer who can compare numbers in writing is a customer who can make an actual decision, and that’s the only kind of business CleanRun is interested in earning.
Since 2013, CleanRun has completed work on more than 52,000 homes across the San Antonio area – every one with a written price before work started and a documented photo record when the crew left. The 365-Day Done Right Promise is on every job. The equipment – Rotobrush, Nikro, Abatement Technologies, Honeywell, Aprilaire, Guardsman – is the same professional-grade roster on every job. That’s not a marketing position; it’s what the photo record shows.
Call (726) 600-7155 for a written estimate. No commitment required.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning San Antonio, serving San Antonio, TX since 2013.
Pricing reflects the San Antonio market as of 2026. CleanRun Air Duct Cleaning San Antonio offers free estimates – call (726) 600-7155.
What Our Customers Say
"The dryer vent was almost completely blocked with lint. They showed me the photograph and I understood immediately why the dryer had been running twice."
- Lucia M."My allergies genuinely improved. They also told me the ducts did not need sealing, which I had been quoted for elsewhere."
- Petra K."They found a disconnected duct in the crawl space that had been dumping conditioned air under the house for years. Photographed it, quoted the repair, fixed it."
- Devon A.