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.
Fast, Reliable HVAC Cleaning Across Floresville
HVAC cleaning in Floresville means dealing with two forces that work against your system all year: clay soil that moves under your foundation and air that carries pecan and live oak pollen through every duct. Most standard HVAC cleanings in Floresville run $450 – $850 for a typical home, depending on system size and how accessible your ducts are. We coordinate scheduling from our San Antonio office, but our crews work throughout Floresville weekly, and a live person answers at (254) 347-3897 any time you call.
Every job starts the same way: a written price before any work begins, a live arrival window you can track, and before-and-after photos of your own system. No guessing, no price changes at the door. That’s the HVAC Cleaning standard we hold ourselves to, and it’s why homeowners around the courthouse square and out toward Cibolo keep calling us back when the pollen season hits.
Why Cardinal Air Duct San Antonio Is Floresville’s Preferred HVAC Cleaning Company
We’ve spent enough time under Floresville pier-and-beam homes to know what the Blackland Prairie does to ductwork. The clay here doesn’t sit still. It swells after the spring rains, shrinks through August, and every cycle works duct joints a little looser. Most companies show up with a vacuum and leave. Our techs know to check the register boots first, because that’s where the separation shows up in older Floresville homes.
Every technician who rolls up to a Floresville home is background-checked, uniformed, and carries professional-grade equipment from Rotobrush, Nikro, and Abatement Technologies. You’ll know the tech’s name before they open the door. You’ll get a written price before a single duct is touched. And you’ll get photos showing exactly what came out of your system and what it looked like afterward. That’s the Relay Standard, and it applies to every booking in Floresville without exception.
Omar Haddad leads our team, and he holds every job to the 365-Day Done Right Promise. If the work isn’t right within a full year, we return and correct it at no charge. That covers every Floresville job, not select ones.
Styles & brands we work with
AC Vent Cleaning in Floresville
AC vent cleaning in Floresville is rarely just about wiping register covers. In this climate, the return side pulls constantly, and in older pier-and-beam homes the return often draws from a crawlspace that stays humid for months after the rains stop. The first thing our techs do on an AC vent cleaning here is check the return path and the register boots for gaps where the clay soil’s shrink-swell cycle has pulled connections apart. You can have spotless ducts and still breathe crawlspace dust if those joints aren’t sealed.
A focused AC vent and supply-run cleaning for a Floresville home typically runs $250 – $450 when it’s part of a full system cleaning. If your system only needs vent-focused work and the ducts are in decent shape, that’s the range we quote. The price includes the vents themselves, the supply runs we can reach, and a check on the return side.
What our crew finds in Floresville supply runs
On a 1960s ranch near the historic courthouse square, our crew found the original flex duct in a pier-and-beam crawlspace had collapsed where the soil shifted. The blower motor had been pulling humid crawlspace dust straight into the supply side for what looked like years. After source removal with negative pressure and HEPA filtration, we sealed the separated supply runs and reconnected the air handler. The homeowner said the house smelled different within a day.
When vent cleaning isn’t enough
If the blower motor is caked with pecan pollen or the evaporator coil is coated, vent cleaning alone won’t fix the air quality. We’ll show you the before-and-after photos and tell you plainly if the coil treatment or blower cleaning is the real fix. No upselling language, just what the camera shows.
Furnace Duct Cleaning in Floresville
Furnace duct cleaning in Floresville matters even in a place where the furnace only runs a few months a year. That’s actually part of the problem. The furnace sits idle all summer while the AC runs hard, and the ducts collect pollen, dust, and the fine clay powder that finds its way past pier-and-beam skirting and into the system. When the first cold front pushes through in November and the furnace fires up, it pushes all of that into your living room at once.
A furnace duct cleaning for a standard Floresville home runs $400 – $700 when combined with the AC side of the system. We recommend treating it as one job because it’s the same ductwork carrying both heated and cooled air. Cleaning only half the system leaves the other half as a reservoir that re-contaminates within a season.
The furnace side gets ignored most
Heat exchanger cleaning in Floresville homes is often skipped for years because the furnace doesn’t run much. But high humidity through spring and fall accelerates corrosion on dust-caked exchanger surfaces. Our techs include a heat exchanger inspection as standard on any furnace duct cleaning, and we’ll tell you if the buildup is affecting combustion efficiency or just making that first heating cycle smell like burnt dust.
Blower cleaning that actually restores airflow
Live oak pollen is a fine, sticky particle, and it builds up on blower motor blades fast. In newer slab homes with attic ducts, the blower is often pulling air through a system that’s been baking above 130°F all summer, which bakes pollen onto the blades. A proper blower cleaning means removing the assembly, cleaning the fins, and verifying amp draw after reassembly. That’s part of what our furnace duct cleaning includes in Floresville.
Trusted Brands We Service in Floresville
We work on every major HVAC brand installed in Floresville homes: Carrier, Trane, Lennox, Rheem, Goodman, American Standard, and York. We stock filters and common replacement parts for these systems on our trucks, which means most Floresville jobs don’t require a second visit for parts. Our filtration lineup includes Aprilaire media filters and Guardsman products where a housing upgrade makes sense, and we install them with the same written-price rule. For homes with persistent air quality concerns, an Aprilaire media cabinet is a common recommendation after a deep clean.
See the difference
Before
After
Before
After
Before
AfterCommon HVAC Cleaning Problems We See in Floresville Homes
- Clay-soil duct separation under pier-and-beam homes. The shrink-swell cycle in Floresville’s Blackland Prairie clay loosens duct joints every few years. Cleaning alone won’t stop the dusty crawlspace air leaking into the supply side; the separation has to be sealed.
- Attic duct sag in newer slab homes. Floresville attics bake above 130°F in summer, which softens flex duct and causes sagging or disconnection. That’s why far rooms lose airflow even after a thorough cleaning.
- Pollen-caked blower motors and evaporator coils. The pecan and live oak pollen season coats everything. We routinely find coils so loaded that a basic vent cleaning would be pointless, and the blower motor fins just as bad.
- Humidity-fed mold in crawlspace duct runs. Pier-and-beam crawlspaces in Floresville stay damp long after the rains stop. Flex duct in those spaces is a perfect mold reservoir, and it’s where the musty smell comes from when the AC kicks on.
Pricing for HVAC Cleaning in Floresville, TX
Most whole-home HVAC cleanings in Floresville run $450 – $850. The spread comes from square footage, duct layout, and whether you’re on a pier-and-beam or slab. A 1,200-square-foot slab home with easy attic access will sit near the low end. A 2,400-square-foot pier-and-beam home with a humid crawlspace and original flex duct will sit near the top. If our camera inspection finds separated joints or collapsed runs, sealing or replacement is quoted separately, in writing, before we touch it. Every estimate is free. Call (254) 347-3897 and we’ll walk through what your system needs.
We Also Serve Cities Near Floresville
Our crews cover Floresville and the surrounding area every week, including Converse, Cibolo, San Antonio, and New Braunfels. If you’re a few miles out on a county road, call us and we’ll confirm coverage for your address.
Serving Floresville, TX - Our Local Coverage Area
We’re based in the Floresville area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About HVAC Cleaning in Floresville
Because the clay under your home moves. Floresville sits on Blackland Prairie soil that swells when wet and shrinks when dry, and each cycle works duct joints loose. Our camera inspections routinely find gaps at register boots on Pecan Street that don’t appear in nearby Elmendorf – same house age, different soil behavior. Cleaning removes the contamination, but sealing the joints is what stops the crawlspace air from leaking into the supply side. Call (254) 347-3897 and we’ll inspect your system before quoting any sealing work.
Pecan and live oak pollen coats the blower motor and evaporator coil during the spring bloom, and it’s sticky enough that it doesn’t blow through the system – it accumulates. That buildup reduces airflow and pushes allergens through supply registers even after a basic vent cleaning. In Floresville, we recommend a full system check in early spring and again in late fall, because the pollen load here is heavier than in surrounding counties with different tree cover.
Mostly sagging flex duct. Attics in Floresville hit 130°F and higher through the summer, and flex duct loses its rigidity at those temperatures. Runs sag between supports, and in the worst cases the connections at wye fittings pull apart entirely. That’s why far bedrooms in newer slab homes often get weak airflow no matter how recently the ducts were cleaned. We address the sag and reattach separated runs as part of the job, with a written price before we start.
Yes. Foundation movement here is normal – the clay soil shrinks and swells with every wet-dry cycle, and pier-and-beam homes on Pecan Street and around the historic downtown show it first. When piers shift, ducts separate, and the return side starts pulling from the crawlspace instead of the living space. You’ll get dusty air within weeks of a cleaning if the separation isn’t found and sealed. Our inspection includes checking register boots and return connections for exactly this.
Yes, especially in pier-and-beam homes where the air handler draws from a humid crawlspace. High humidity feeds mold growth on the blower housing and evaporator coil, and that biofilm is what causes the musty smell when the AC cycles on. We include a coil treatment and blower cleaning as standard on whole-home HVAC cleaning in Floresville, not as an add-on you have to argue for. The written quote covers it upfront.
Written by Omar Haddad, Owner at Cardinal Air Duct San Antonio, serving Floresville and the surrounding area.