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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AfterLennox Air Duct Cleaning in Castle Hills, TX | CleanRun Air Duct Cleaning San Antonio
Independent Air Duct Cleaning in Castle Hills for Lennox systems runs $280-$520 for a complete system, depending on whether your home still has original 1960s flex duct or a more modern layout. We’re an independent service shop, not a Lennox dealer, which means our recommendations follow pressure readings and video evidence, not any manufacturer’s service agenda. Call (726) 600-7155 for a written estimate before any work starts.
Why Castle Hills Residents Choose Us for Lennox Service
We’ve cleaned Lennox equipment in Castle Hills since 2013. The work has changed over the years. Early on we saw mostly Merit series ML180 furnaces and original sheet-metal trunks from the 1960s. Now we’re just as likely to find EL296V variable-speed units retrofitted into those same attics, struggling against ductwork that was never sized for modern airflow.
Tomas Reyes, our owner, trained in HVAC systems technology at Queensborough Community College and spent years doing hands-on ductwork across the Northeast before building CleanRun here. He keeps a folded photo of his late father’s woodworking shop tacked inside his work van. The reminder is simple: craftsmanship shows in what you leave behind. That’s why our crews pull out a camera scope before writing any number on a quote sheet. The camera goes in first. Then we talk.
Every Castle Hills job starts with a written price under Haven Standard Clause 1, includes a Documented Photo Record of every duct run, and ends with our 365-Day Done Right Promise in writing. Our technicians are background-checked and uniformed under Haven Standard Clause 3: Verified Crews. We stock OEM-equivalent Lennox cased coils, blower wheels, and limit switches alongside quality aftermarket flex and metal components for repairs that don’t require factory parts.
Common Lennox Air Duct Cleaning Problems We Solve in Castle Hills
- Cased coil choked with cedar pollen and dust. Lennox cased coils in Castle Hills attics sit in unconditioned space that exceeds 130°F through summer. Add Ashe juniper pollen from December through February, and the coil fins collect a matted layer that restricts airflow and drives static pressure past the blower’s rated limit. We clean the coil in place and measure pressure drop before and after.
- Panned-floor returns pulling attic debris. Older Merit and Elite furnaces paired with original panned-floor returns draw attic dust and insulation fibers through unsealed chases. We trace the path with video inspection, then seal with mastic and replace deteriorated flex sections.
- Collapsed flex-duct starving the system. Original flex-duct runs connected to Lennox air handlers sag or collapse internally after decades of attic heat cycling. The system can’t move enough return air. Short cycling and high-limit trips follow. We document the collapse, replace the section, and verify airflow recovery.
- Fiberglass liner shedding into supply air. Fiberglass duct liner inside metal trunks near a Lennox air handler breaks down after repeated thermal cycling in San Antonio’s heat. The fibers enter the supply airstream. We find this with camera inspection and recommend liner removal or duct replacement when shedding is active.
- Pressure mismatch from oversized modern equipment. Castle Hills ranch homes built for window units or low-capacity furnaces now house high-efficiency Lennox air handlers. The original ductwork can’t handle the static pressure. We measure, document, and give an honest repair-vs-replace call based on whether the existing runs are worth sealing around.
BeforeAfterLennox Service in Castle Hills: What Local Conditions Mean for Your Equipment
Castle Hills is not San Antonio. It’s an incorporated city with its own mechanical permit and inspection requirements, and contractors who default to San Antonio rules can leave homeowners exposed. We plan around this on every Lennox job inside Castle Hills city limits.
The housing stock matters too. These 1,500-2,500 square foot mid-century ranches off West Avenue and surrounding streets were built almost entirely between 1950 and 1972. Many still run original or first-generation replacement ductwork in attic spaces that reach extreme temperatures. Deteriorating fiberglass duct liner, collapsed inner flex-duct sections, and disconnected joints at panned-floor returns are standard findings here, not exceptions. That 1968 ranch off West Avenue we mentioned earlier? The EL296V was a quality install, but the original panned-floor return was pulling attic insulation fibers straight into the blower compartment. Static pressure was well above the furnace’s rated limit. We cleaned the full system, sealed the return chase with mastic, replaced a collapsed section of first-generation flex duct, and cleaned the cased coil. Pressure dropped back into range. The short cycling stopped.
We bring this up because Castle Hills’ uniform, aging housing stock makes professional cleaning both more urgent and more technically involved than in newer suburban neighborhoods. The Castle Hills service area is small, but the work is specific.
Lennox Models & Products We Service in Castle Hills
We work on Lennox sales & service equipment weekly across the San Antonio basin. In Castle Hills specifically, we regularly service:
- Elite series: EL296V and EL280 two-stage and variable-speed furnaces - common retrofit units in local ranches
- Merit series: ML180 and ML196 gas furnaces - often original or first-replacement units from the 1990s and 2000s
- Dave Lennox Signature Collection: SL280V and SLP98V - higher-end installs in renovated Castle Hills properties
- XC/XP series: Air conditioners and heat pumps paired with matching cased coils
Our approach to parts is straightforward, including for our Dryer Vent Cleaning in Castle Hills. We stock OEM-equivalent cased coils, blower wheels, and limit switches when they speed up a repair. For flex duct, metal transitions, and sealant work, we use quality aftermarket components where OEM isn’t required. On 15-20 year old Lennox equipment in these homes, we give an honest repair-vs-replace call based on refrigerant type, heat exchanger condition, and whether the ductwork is worth sealing around. Equipment on our trucks includes Rotobrush, Nikro, Abatement Technologies, Honeywell, Aprilaire, and Guardsman - brands you can verify independently.
Lennox Service Pricing in Castle Hills
| Service | Typical Range in Castle Hills |
|---|---|
| Full system air duct cleaning (standard ranch, 1,500-2,500 sq ft) | $280-$420 |
| Full system cleaning with evaporator coil service | $380-$520 |
| Video inspection and written scope only | $0 (included with estimate) |
| Duct sealing and flex-duct repair (per run, after cleaning) | $120-$280 |
Cost drivers here are specific. Original 1960s flex duct with multiple collapse points takes longer to assess and repair than later-generation ductwork. Cedar pollen loading from a heavy season adds time to coil cleaning. Homes with active fiberglass liner degradation require containment and more thorough post-cleaning verification. One flat price per system, agreed in writing before work starts. No per-vent pricing. No coupon that triples once the van arrives. Call (726) 600-7155 for an exact quote - estimates are free.
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 - Lennox Air Duct Cleaning in Castle Hills
Yes. Castle Hills is its own incorporated city with separate mechanical permit requirements from San Antonio. Any duct repair or equipment-related work inside city limits can require a Castle Hills permit, not a San Antonio one. We verify permit needs before starting work and handle the filing when required. Call (726) 600-7155 and we’ll confirm whether your specific scope needs permitting.
It does. Extreme attic heat accelerates fiberglass liner breakdown and hardens debris on coil fins, making buildup more stubborn and airflow restriction more severe. We recommend annual coil inspection and full system cleaning every 2-3 years for Castle Hills attics, or annually if anyone in the home has respiratory sensitivity. Call (726) 600-7155 to schedule a video inspection and we’ll show you what your coil looks like right now.
Ashe juniper pollen from December through February is among the highest in the United States. Homes seal up during this period while recirculating pollen-laden air. Lennox systems with unsealed panned-floor returns or deteriorating flex duct pull that accumulated loading through the return side continuously. The fix is sealing the return path and removing the deposited material, not just changing the filter. Call (726) 600-7155 for a written estimate.
Very possibly. Original panned-floor returns in these 1950-1972 ranches often leak attic air and debris, raising static pressure and starving the furnace of proper return airflow. The EL296V on West Avenue we serviced had exactly this problem. We video-inspect first, measure static pressure, and give you the photograph before recommending any work. Call (726) 600-7155 for a free second opinion on any written estimate you’ve already received.
In most cases, yes. We access the coil through the cabinet and adjacent plenum for cleaning, and seal duct connections from the outside with mastic and metal tape. Pulling the coil is only necessary if the coil itself is leaking refrigerant or the cabinet is damaged. We document the approach with photos before starting so you know exactly what the scope includes. Call (726) 600-7155 for a written price before any work starts.
Service Areas Near Castle Hills
We run Lennox service regularly through the near-north San Antonio ring. That includes Lennox service in San Antonio proper, Lennox service in Alamo Heights, plus Terrell Hills, Leon Valley, and Kirby. Castle Hills itself is compact, but we schedule it specifically because the permit requirements and housing stock differ from the surrounding city.
Book Your Lennox Service in Castle Hills Today
Call (726) 600-7155 to speak with a live person. We’ll schedule a video inspection, deliver a written price before any work starts under Haven Standard Clause 1, and leave you with a Documented Photo Record of every duct run and the 365-Day Done Right Promise in writing. No per-vent pricing. No bait-and-switch. Just documented work you can verify.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning San Antonio, serving Castle Hills since 2013.