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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AfterFast, Reliable HVAC Cleaning Across Sonterra
HVAC cleaning in Sonterra means one thing for us: source removal on both the supply and return sides of your system, done with professional tools and a flat price you agree to before we open a single access panel. If you live off Sonterra Boulevard, up near the newer zoned two-stage builds, or back in the older Hill Country-adjacent streets, you already know the dust here doesn’t sit still. Cedar pollen and caliche dust load the air seasonally, and when your blower cycles that air through the coils and duct trunks, the inside of your system starts holding onto it. We’re the company Sonterra homeowners call when they want the straight version of what an HVAC Cleaning actually involves, what it costs here, and whether their system even needs it yet. Call us at (737) 727-2314 and a live person answers.
Why Cardinal Air Duct Cleaning Is Sonterra’s Preferred HVAC Cleaning Company
We’re part of the Relay Home Co. family, founded in 2005, and we operate under The Relay Visibility Guarantee: every booking comes with a live trackable arrival time, before-and-after photos of your own ducts, and a written price handed to you before any work starts. That guarantee isn’t a marketing line. It’s the operating standard every Cardinal Air Duct Cleaning location is held to, and it’s why Sonterra homeowners who’ve been burned by vague quotes and bait-and-switch pricing tend to stick with us once they’ve booked once.
Our technicians are background-checked, uniformed, and they arrive with professional-grade equipment: Rotobrush rotary brush systems for agitating duct walls, Nikro HEPA-rated vacuums for negative-pressure extraction, and Abatement Technologies containment units when a full source-removal job warrants it. You’ll know your tech’s name before they knock. And Omar Haddad, who leads our team, insists on the same standard on every job: if the work isn’t done right, the 365-Day Done Right Promise means we come back and correct it at no charge within a full year. That covers every booking. No exceptions, no fine print.
We also answer the phone. Like, actually answer it. A live person is on the line 24/7, not a voicemail loop that calls you back next business day. For Sonterra homeowners coordinating around shift work, school runs, or a packed weekend, that matters.
Evaporator Coil Cleaning in Sonterra
Evaporator coil cleaning in Sonterra is the most common piece of work we do, and the one most often skipped by companies that quote low and cut corners. Your evaporator coil sits inside the air handler and gets cold while the system runs. The air moving across it carries whatever’s in your ductwork, and over months or years, that surface builds a film of dust, pollen, and the fine gray caliche powder that drifts through this part of Texas. Once that film forms, your system’s ability to transfer heat drops, your compressor works harder, and your electric bill reflects it. In Sonterra, a typical evaporator coil cleaning runs $180 – $340 as part of a full HVAC cleaning, depending on the size of the air handler and how accessible the coil is. If the coil hasn’t been cleaned in years and the buildup is heavy, the job takes longer and lands at the higher end of that range.
What Coil Cleaning Involves
We pull the access panel, camera-inspect the coil to document what’s actually there, then agitate the fins with coil brushes and apply a non-acidic cleaning agent that breaks down the bonded layer. After the coil is cleaned, we check the condensate drain line because a clogged line is exactly what causes water damage under a Sonterra attic-installed air handler.
When Sonterra Homeowners Need It
If your system runs cold but the house doesn’t cool like it used to, or if you see frost forming on the copper line set outside, the coil is often the culprit. We also recommend coil cleaning any time a full duct cleaning is being done, because pulling loosened debris through a dirty coil just re-coats it within weeks.
AC Duct Cleaning in Sonterra
AC duct cleaning in Sonterra is where the honest conversation usually starts, because most homes here were built with zoned systems and multiple return trunks, and that changes the job. You’re not cleaning one rectangular loop. You’re cleaning a supply trunk plus a return trunk that may run across the attic at different temperatures, carrying different debris loads. We price this by the system, not by the vent. A full AC duct cleaning for a typical zoned Sonterra home runs $300 – $600, and that includes both supply and return runs, the plenum, and the air handler interior. We agree on one flat price before we start, and that price does not change at the door.
What Source Removal Actually Means
Source removal means the debris comes out of the ducts, not just gets loosened and blown around. We connect a HEPA-filtered negative-pressure vacuum to the system so that when the Rotobrush agitates the duct walls, the loosened material is pulled straight into the vacuum and trapped, not redistributed through your living room. For Sonterra’s cedar pollen and caliche dust, this matters. Those particles are fine enough to stay airborne indoors for hours if they escape the containment.
How You Know It Was Done
You get before-and-after photos of your own duct interiors. Not stock images. Actual camera stills from your actual trunk lines, before we started and after we finished. If a company won’t show you the inside of your ducts with a camera, you have no way to verify the work. We send the photos to your phone within a day of the job.
Trusted Brands We Service in Sonterra
Sonterra’s newer builds skew heavily toward two-stage HVAC systems, and that means brand-specific knowledge isn’t optional. We work on systems from Trane, Carrier, Lennox, Rheem, Goodman, and American Standard, and we keep common filtration and coil-cleaning supplies on our trucks for those units. We also stock and install Honeywell and Aprilaire filtration products when a Sonterra homeowner wants to upgrade their media cabinet or add a whole-home air cleaner. Because we’re not tied to a single manufacturer, we service whatever’s already in your attic or closet. The equipment we run is brand-consistent too: Nikro HEPA vacuums, Rotobrush agitation systems, and Abatement Technologies containment units. No truck-mounted shop vacs pretending to be professional duct cleaning gear.
Common HVAC Cleaning Problems We See in Sonterra Homes
- Zoned systems with unbalanced return airflow. When one zone runs more than the others, the return trunk serving that zone loads with dust faster. We see this constantly in Sonterra’s two-stage zoned homes, and it’s why pricing per vent punishes you for square footage rather than for actual duct work.
- High-MERV filter replacements that still leave dust everywhere. We took a job off Sonterra Boulevard where the homeowner had swapped in a high-MERV media cabinet and still saw dust on every register. Camera inspection showed a return trunk above the air handler coated in gray paste that had bypassed the filter entirely, which meant the filter wasn’t the problem, the ducts were.
- Clogged evaporator coils reducing runtime efficiency. Cedar pollen and caliche dust bond to the wet coil surface faster than dry household dust. A coil that hasn’t been cleaned in five years isn’t just dirty, it’s reducing your system’s heat transfer enough to shorten compressor life.
- Condensate drain line blockages in attic-mounted handlers. A clogged line backs up and leaks into the insulation or ceiling below. In Sonterra’s heat, that stale water also breeds mold faster, which is why we always check and clear the drain line during a full HVAC cleaning.
Pricing for HVAC Cleaning in Sonterra, TX
Let’s be direct. A full HVAC cleaning in Sonterra, including duct cleaning, evaporator coil cleaning, blower cleaning, and plenum interior work, runs $450 – $900 for a typical zoned home, depending on the number of air handlers and the length of the duct runs. Evaporator coil cleaning alone runs $180 – $340. AC duct cleaning alone runs $300 – $600. We don’t price per vent. We don’t run a low teaser number that becomes a larger invoice once the van is on the driveway. You get one flat price per system, written down and agreed to before we touch a fitting. If you want an exact quote for your Sonterra home, call (737) 727-2314 and we’ll give you a number you can actually compare.
We Also Serve Cities Near Sonterra
If you’re outside Sonterra proper but still in the metro area, we run crews through HVAC Cleaning in Sonterra territory regularly, plus Houston, San Antonio, Dallas, and Fort Worth. Scheduling is coordinated through our Dallas-Fort Worth office, and dispatched crews serve Sonterra locally. If you’re nearby, call us and we’ll tell you which technician covers your street.
Serving Sonterra, TX - Our Local Coverage Area
We’re based in the Sonterra 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 Sonterra
Every 3 to 5 years for most homes in Sonterra. Homes with pets, high-cedar seasons that push lots of pollen through the returns, or recent construction nearby may need it sooner. If you just moved into a home and can’t verify the last cleaning, start fresh. A system that’s only been lightly used and has clean coils and filters doesn’t need annual cleaning, despite what some companies will tell you. Call (737) 727-2314 and we’ll give you a straight answer based on your system, not a sales calendar.
Per system. Always per system. Sonterra’s zoned homes with multiple return trunks make per-vent pricing a penalty for having a larger house, not for having more duct work that actually needs cleaning. We give you one flat price for the full system before any work starts, and it doesn’t change. For an exact quote, call (737) 727-2314.
We start with a camera inspection of the supply and return trunks, the plenum, the evaporator coil, and the blower wheel. Then we connect the HEPA negative-pressure vacuum to create containment, run the Rotobrush through all accessible supply and return runs, clean the coil and blower with agitation tools, clear the condensate line, and reseal the plenum. You get before-and-after photos of your own ducts. That’s the whole job. No mystery steps, no upsells halfway through.
It gets rid of the dust and debris physically lodged inside the duct system, coil, and air handler. If dust is still landing on furniture a week later, the source is something else: leaky return ducts pulling attic air into the system, a filter that’s bypassing, or gaps in the plenum. We’ll tell you which it is, because we document what we find during the camera inspection. If it’s a duct-side problem, we fix it. If it isn’t, we won’t sell you a cleaning you don’t need.
Yes. We work on Trane, Carrier, Lennox, Rheem, Goodman, and American Standard systems regularly, including the two-stage units common in Sonterra’s newer construction. We’re not brand-exclusive, which means we don’t tell you to replace a system just because we’re not authorized to service it. For any brand question, call (737) 727-2314 and we’ll tell you directly what we can do.
Written by Omar Haddad, Owner at Cardinal Air Duct Cleaning, serving Sonterra under The Relay Visibility Guarantee: live trackable arrival, before-and-after photos of your own ducts, and a written price before any work starts.