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.
Trane Air Duct Cleaning in Castle Hills, TX | CleanRun Air Duct Cleaning San Antonio
Trane air duct cleaning in Castle Hills typically runs $380-$620 for a complete system, with most jobs scheduled within a week during cedar pollen season. We’re an independent Trane service provider, not manufacturer-authorized, and we’ve learned that Castle Hills’ 1950s-1970s ranch homes punish Trane equipment differently than newer construction. Call (726) 600-7155 for a written estimate before any work starts.
Why Castle Hills Residents Choose Us for Trane Service
We’ve cleaned Trane-connected duct systems in Castle Hills since 2013 as Trane specialists. Tomas Reyes, our owner, started in Queens pulling camera scopes through sheet-metal runs in pre-war buildings, and that habit came with him. The camera goes in first. Then we talk. Every Castle Hills job still opens with a video inspection of the full duct network, and the photo record goes to the customer before we pack up.
Castle Hills isn’t San Antonio, permit-wise or practically. The city incorporated separately and keeps its own mechanical code. Contractors who roll up from Bexar County assuming one permit covers everything hit delays we don’t. We file Castle Hills permits routinely for duct sealing and flex duct repair on Trane systems.
Our crews carry OEM-compatible Trane parts for blower motors and control boards, plus aftermarket duct components that meet or exceed Trane spec. The written price lands before a panel comes off, every time, under Haven Standard Clause 1. No “call for a quote.” No $79 coupon that balloons in your driveway.
Common Trane Air Duct Cleaning Problems We Solve in Castle Hills

- Panned floor return leaks pulling attic debris straight into Trane XR and XB air handlers. Castle Hills ranch homes were built with panned-floor returns - sheet metal formed between joists, sealed with tape that’s now sixty years brittle. The return plenum runs negative pressure, so every crack pulls 140°F attic dust and cedar pollen directly past the filter into the blower. We photograph the leakage, seal with mastic, and show the after.
- Variable-speed Trane XV systems overpressuring undersized original ductwork. A Trane XV18 or XV20i ramps blower speed to maintain precise static pressure. When it hits a 1960s sheet-metal trunk sized for a 3-ton system now feeding a 4-ton air handler, the motor overworks and the flex inner core collapses. We’ve found collapsed supply runs in Castle Hills Forest and Windcrest Terrace where the homeowner assumed the Trane unit was faulty.
- Evaporator coil fouling from Ashe juniper pollen and degraded fiberglass liner. December through February, Castle Hills records some of the highest mountain cedar counts in the U.S. That pollen mats on Trane cased coils, mixing with fiberglass particles from deteriorating duct liner. The coil becomes a filter. Airflow drops. Energy bills climb. We clean the coil in place when possible, remove it when necessary, and document both states.
- Disconnected metal sections behind original registers causing limit trips. Behind those narrow 1950s floor grilles, metal duct sections rust through or pull apart at the slip joint. The Trane high-efficiency blower can’t build proper static pressure, so it runs longer, trips thermal limits, and cycles on safety. Our video scope finds these before we’re guessing at symptoms.
- Attic temperature extremes accelerating flex duct deterioration. Castle Hills attics hit 160°F in August. Original flex duct, even first-generation replacement, cooks until the inner core separates from the insulation jacket. The Trane system loses conditioned air to the attic and pulls that heat back through leaks. We replace with properly spec’d flex and seal every joint.
Before
AfterTrane Service in Castle Hills: What Local Conditions Mean for Your Equipment
Castle Hills developed almost entirely between 1950 and 1972 as a planned enclave of mid-century ranch homes, and that uniformity creates a predictable pattern of Trane duct problems you won’t see in Alamo Heights’ mixed-era stock or Stone Oak’s 1990s-and-later construction. The original sheet-metal or early flex-duct systems were engineered for window units or low-capacity furnaces. Now they serve modern high-efficiency Trane air handlers with variable-speed blowers that expect properly sized, sealed ductwork. The mismatch produces static pressure problems, collapsed cores, and particulate loading that makes professional cleaning both more urgent and more technically involved than a routine maintenance visit.
The independent permitting is the other Castle Hills factor. Because the city incorporated separately from San Antonio, any duct sealing or flex duct repair that alters the system requires a Castle Hills mechanical permit, not a San Antonio permit. We’ve filed these permits dozens of times for Trane systems in the Castle Hills Forest neighborhood and along Northwest Military Highway corridors. Contractors who skip this step leave homeowners with unpermitted work and potential resale complications. We handle the permit as part of the job scope, documented in writing.
Trane Models & Products We Service in Castle Hills

We work on the full Trane residential lineup: XR14 and XR16 air conditioners with matching air handlers; XB13 and XB14 entry-level systems; XV18 and XV20i variable-speed communicating equipment; S9V2 and S8X2 furnaces with cased coils. Our Castle Hills inventory includes OEM-compatible blower motors and control boards for critical repairs, plus aftermarket flex duct, mastic, and insulation from Rotobrush, Nikro, Abatement Technologies, Honeywell, Aprilaire, and Guardsman. For duct components specifically, we spec aftermarket parts that meet or exceed Trane pressure and temperature ratings, not OEM markup where the specification doesn’t justify it.
When we evaluate a Trane system in Castle Hills, we separate air handler issues from duct issues honestly. If the duct system is collapsing throughout and the Trane unit is at end-of-life, we’ll tell you when sealing and cleaning no longer make economic sense. Haven Standard Clause 1: written price, full scope, no pressure.
Trane Service Pricing in Castle Hills
Complete Trane air duct cleaning in Castle Hills: $380-$620 for a typical 1,500-2,500 sq ft ranch, depending on duct accessibility and contamination level. Video inspection included. Evaporator coil cleaning adds $180-$280. Duct sealing with mastic and proper mechanical fastening runs $450-$890 for a full system, permit included.
What drives cost: attic access difficulty (many Castle Hills homes have limited hatch openings), number of supply and return runs, and whether we find collapsed flex requiring replacement versus cleanable duct. Every Air Duct Cleaning in Castle Hills estimate includes the documented photo record of every run, before and after, delivered as part of the standard job record. The 365-Day Done Right Promise applies in writing.
Call (726) 600-7155 for an exact quote. Estimates are free, written, and delivered before any work starts.
Serving Castle Hills, TX - Our Local Coverage Area

We’re based in the Castle 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 - Trane Air Duct Cleaning in Castle Hills
Standard duct cleaning does not require a permit. Duct sealing, flex duct replacement, or any modification to the system does require a Castle Hills mechanical permit, separate from San Antonio’s process. We file these permits routinely for Trane systems in Castle Hills and include the permit cost in the written scope. Call (726) 600-7155 and we’ll confirm whether your specific job triggers permitting.
Mountain cedar pollen from December through February produces some of the highest pollen counts in the United States. Castle Hills homes seal up against cold, recirculating pollen-laden air through leaky returns and inadequate filtration. The pollen mats on Trane evaporator coils and mixes with attic dust in the blower compartment. Post-cedar-season duct cleaning in March or April removes this accumulation before it hardens into the coil fins, and we often pair this with our Dryer Vent Cleaning in Castle Hills for complete system care. We recommend scheduling after the peak season. Call (726) 600-7155 to book.
Yes. Trane XV18 and XV20i systems modulate blower speed to maintain precise static pressure. Original Castle Hills ductwork, sized for lower-capacity equipment, creates excessive resistance. The blower ramps up, overpressures the system, and collapses weak flex-duct inner cores or delaminates fiberglass liner. We see this pattern regularly in Castle Hills Forest and similar neighborhoods. Our video inspection confirms whether the ductwork or the air handler is the root cause before we quote any work.
Often, yes. Trane cased coils with adequate access panels allow in-place cleaning with foaming cleaner and low-pressure rinse, fully documented with before-and-after photos. If the coil is heavily fouled with cedar pollen and fiberglass debris, or if access is restricted by the plenum configuration, we may recommend removal for thorough cleaning. We show you the camera footage and explain which approach applies before pricing either option.
Every three to five years for cleaning in standard conditions, annually if residents have cedar pollen sensitivity or if the home has original panned-floor returns. Duct sealing should be inspected every five years; Castle Hills’ aging metal and early flex duct typically needs attention by decade ten to fifteen. The 1960s-era systems we encounter often haven’t been sealed since installation. Call (726) 600-7155 and we’ll scope your system to give a specific interval.
Service Areas Near Castle Hills

We operate across the San Antonio metro with regular Trane service routes through Castle Hills service area proper, plus Trane service in San Antonio, Trane service in Alamo Heights, Terrell Hills, Leon Valley, and Kirby. Each area has its own ductwork era and pollen exposure profile, but Castle Hills’ mid-century uniformity and independent permitting make it a distinct technical environment.
Book Your Trane Service in Castle Hills Today
Call (726) 600-7155 to schedule a free estimate. A live person answers, 24/7. We’ll send a background-checked, uniformed technician identified by name before arrival. The written price comes before any work starts. The photo record of every duct run comes before we leave. The 365-Day Done Right Promise stays in force long after.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning San Antonio, serving Castle Hills since 2013.




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