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 Terrell Hills
HVAC cleaning in Terrell Hills costs $349 – $689 per system for a full supply-and-return cleaning on a typical custom home, with AC coil cleaning running $149 – $289 per coil. Those ranges reflect what we actually see across the 78209 zip code: large square footage, multiple zones, and older duct runs that often haven’t been opened in decades. If you’re calling from Terrell Hills, you’re probably dealing with dust that settles back on furniture within days, uneven cooling between floors, or a remodel that left drywall dust everywhere. Our crews know the streets off North New Braunfels Avenue and Eldon Road well enough to plan parking before we arrive. Call (254) 347-3897 and we’ll give you a written price before any work starts.
Why Cardinal Air Duct San Antonio Is Terrell Hills’s Preferred HVAC Cleaning Company
Terrell Hills homeowners don’t hire strangers. This is a neighborhood where referrals travel fast, and a crew that shows up late, loud, or sloppy doesn’t get called back. That’s why Omar Haddad runs every Terrell Hills job under the Relay Standard: you get a live trackable arrival window, a written price handed to you before a single duct is touched, and before-and-after photo documentation of the work. No vague estimates. No four-hour waiting windows. You’ll know your technician’s name before they ring the bell.
Our HVAC Cleaning crews work on the older stock that defines Terrell Hills: 1920s to 1960s custom builds with original ductwork, additions that changed the airflow math, and mature oaks that drop fine pollen into return registers all spring. We carry Rotobrush agitation systems and Nikro HEPA vacuums sized for 25-foot-plus runs. And every job, without exception, falls under the 365-Day Done Right Promise. If the work isn’t right within a full year, we come back and correct it at no charge. That’s not a marketing line. It’s the standard that covers every booking.
Styles & brands we work with
AC Coil Cleaning in Terrell Hills
AC coil cleaning in Terrell Hills typically costs $149 – $289 per coil, and it’s the single most impactful HVAC cleaning service for homes here because hot, humid summers force evaporator coils to condense moisture constantly, which turns passing dust and pollen into a sticky film that chokes heat transfer. When the coil is dirty, your system runs longer to hit the same setpoint. That’s higher bills and a compressor working harder than it should. On many Terrell Hills systems we see coils that haven’t been cleaned since the previous owner, and the airflow drop is measurable.
The Evaporator Coil Problem
Your evaporator coil sits inside the air handler, right in the airflow path. When pollen from Terrell Hills’ live oaks combines with condensation, it forms a paste that insulates the coil. We remove the coil access panel, apply a commercial coil cleaner, and rinse with controlled pressure so the fins don’t bend. On a 1950s two-story home with original supply lines, a clean coil often drops static pressure enough that the blower motor runs quieter within hours.
Condenser Coil Cleaning
The outdoor condenser coil collects grass clippings, cottonwood, and dust from Terrell Hills streets. We clean it with a low-pressure wash and fin comb, then document the before and after. If your condenser sits under a tree canopy off a side yard, expect this to be a twice-annual job, not an afterthought.
AC Cleaning in Terrell Hills
AC cleaning in Terrell Hills means more than blowing out a vent. For homes here, it means source removal inside the duct system, the air handler, and the blower assembly, because the original return ducts on pre-central-air homes actively pull attic dust and crawl space particulate into the system every time the blower kicks on. A standard AC cleaning on a Terrell Hills home runs $349 – $689 per system depending on the number of supply and return runs, and we recommend spending the time on the return side, which most companies skip.
Blower and Air Handler Cleaning
We remove the blower wheel, clean each curved blade, and wipe down the air handler cabinet before reassembling. On older Terrell Hills systems, the blower wheel often carries a decade of caked dust that reduces airflow by 20% or more. Cleaning it restores the CFM the system was designed for, which matters when a house has three zones and one of them always feels warm.
Heat Exchanger and Coil Treatment
We vacuum the heat exchanger surfaces and apply an EPA-registered antimicrobial coil treatment where moisture has created microbial growth. This isn’t a spray-and-go. We check the drain pan, clear the condensate line, and verify the system pulls proper negative pressure before we pack up.
Trusted Brands We Service in Terrell Hills
We service and clean systems from every major manufacturer you’ll find in Terrell Hills, including Trane, Carrier, Lennox, Rheem, and Goodman, and we work around Aprilaire and Honeywell filtration components without voiding the install. Our technicians carry Rotobrush agitation tools and Nikro HEPA extraction units calibrated for the long, multi-bend duct runs common in older custom homes here. We stock common filter sizes locally so a Terrell Hills homeowner isn’t waiting on a part. If you have an Aprilaire media cabinet or a Honeywell electronic air cleaner, we clean and service it in the same visit rather than telling you to call someone else.
See the difference
Before
After
Before
After
Before
AfterCommon HVAC Cleaning Problems We See in Terrell Hills Homes
- Original return ducts that are simply too small. Many Terrell Hills homes built before central air became standard still have undersized return registers that pull harder than they should, dragging attic dust and insulation fibers into the system. Cleaning helps, but so does knowing where the return runs actually go.
- Renovation debris left inside ductwork. Additions and remodels are common here, and drywall sanding produces ultra-fine dust that travels through the entire house once the HVAC runs. We rarely open a remodeled Terrell Hills home without finding white dust coating the inside of supply runs.
- Pollen and organic buildup from the oak canopy. Mature live oaks shed fine pollen in spring, and it gets pulled through window screens, door gaps, and return registers. If you’re dusting surfaces twice a week during March and April, your ducts are carrying that load.
- Multi-zone systems with inconsistent airflow. Three zones on a 1950s house means one system often does the work of two. We see dampers stuck, runs collapsed, and blowers coated to the point that the far zone barely gets conditioned air. Cleaning the blower and coils is often the first step before any expensive repair.
Pricing for HVAC Cleaning in Terrell Hills, TX
Here’s what we charge in Terrell Hills, and it’s the same price you’ll see in writing before we start. Full HVAC cleaning with supply and return duct source removal runs $349 – $689 per system. AC coil cleaning runs $149 – $289 per coil. Blower and air handler cleaning runs $129 – $219. Condenser coil cleaning runs $99 – $159. A house with three zones and 25-foot-plus runs on the far side will land at the higher end of the range because those runs take more agitation and more extraction time. We don’t charge per vent, and we don’t quote a low number that doubles once the van is parked. You get one flat price per system, agreed before work starts. Call (254) 347-3897 for a free estimate.
We Also Serve Cities Near Terrell Hills
Our HVAC cleaning crews serve Terrell Hills and the surrounding area, including San Antonio, New Braunfels, Cibolo, and Converse. If you’re in Terrell Hills, we’re already local to you. If you’re nearby and wondering whether we cover your street, call us and ask, because the Terrell Hills service area is our home base for this part of Bexar County.
Serving Terrell Hills, TX - Our Local Coverage Area
We’re based in the Terrell Hills 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 Terrell Hills
Older return ducts here are often undersized, which means the system pulls harder and deposits more dust on the evaporator coil and blower wheel, so cleaning that system takes more time and agitation than a newer home with properly sized returns. A 1950s home with three zones and original return runs will usually land at $500 – $689 per system, while a smaller single-zone home with a recent duct retrofit might land at $349 – $450. The price is per system, not per vent, and it’s written before we start. Call (254) 347-3897 for an exact quote.
Because you can’t see inside your own ducts, and the only proof the work happened is visual documentation. We run a camera through supply and return runs before and after every job, and you get the images. On a recent 1950s two-story home off North New Braunfels Avenue, our crew found renovation debris from an addition that had been sitting in three return runs since the remodel. The homeowner had paid for a cleaning from another company a year earlier and had no idea the debris was still there. Camera inspection is how you know.
Yes, and it’s the most common reason people call us. When the ducts, blower, and coils are coated in fine dust, every cycle pushes some of that back into the living space. Terrell Hills homes with mature live oaks and original returns deal with more pollen ingress than most San Antonio suburbs, so cleaning the full system can meaningfully reduce how fast surfaces get dusty. The bigger the source load, the bigger the difference.
We provide before-and-after photos, a written service report describing the condition of the ducts, coils, blower, and drain pan, and a digital invoice you can forward directly to your carrier. For older ductwork with compromised returns, we note what we found and what we did, which is useful if you’re filing a claim related to mold, water damage, or contamination. You get this documentation on every job, not on request.
Yes. Remodels that involve drywall, flooring, or any interior demolition produce fine dust that travels into return ducts and settles on the coil and blower. A standard cleaning won’t address it if the technician doesn’t know to look. We treat post-remodel jobs as source removal jobs: we inspect every return run with a camera, clean the air handler and blower, and often recommend a coil treatment to remove drywall dust bonding to condensation. If you’ve just finished a remodel, tell us when you call, because it changes the job.
Written by Omar Haddad, who leads the team at Cardinal Air Duct San Antonio. Omar has spent years working in the San Antonio metro and oversees every job in Terrell Hills personally, making sure the price is written before the work, the documentation is real, and the 365-Day Done Right Promise actually gets kept.