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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Before
AfterWhy Schertz Homeowners Choose Carrier Air Duct Cleaning
CleanRun provides independent Air Duct Cleaning services, repair, and sealing for Carrier residential systems throughout the Schertz area. We follow Carrier’s published design data for Infinity, Performance, and Comfort series equipment, and every job starts with a written price before work begins - no exceptions. Call (830) 402-5110 to schedule.
We’re not a Carrier dealer or authorized representative. We’re an independent service provider that works on Carrier in Schertz homes day after day, from newer builds off Roy Richard Drive to older systems where the ductwork hasn’t been touched since the original install. That independence matters because it means we diagnose what’s actually wrong with your airflow, not what a manufacturer script says to sell you.
Our crew has documented the inside of over 52,000 duct systems since 2013. In Schertz specifically, we’ve learned to look for patterns tied to this market: military rental turnover near Randolph, builder-grade flex duct from the 2000s housing boom, and return ducts that were undersized from day one by regional subs working the FM 78 corridor. Carrier systems in these homes behave predictably when the ductwork fails. We know what to check first.
Why Trust CleanRun Air Duct Cleaning Schertz for Your Carrier Air Duct Cleaning?
Tomas Reyes, our owner and lead technician, started in this trade at Apex Technical School in Long Island City and spent the better part of two decades pulling flex duct, cleaning plenums, and documenting what actually lives inside residential HVAC systems. He and our crew have been working Schertz for several years now. The before photo does the talking. Tomas just brings the camera.
That background shows up in how we handle Carrier equipment. We follow the brand’s published service data for variable-speed ECM blowers, staged gas valves, and communicating thermostats - not because Carrier tells us to, but because ignoring that data leads to misdiagnosed airflow problems and callbacks we don’t have time for. We stock Carrier-compatible OEM-grade door gaskets, collars, flex duct, mastic, and filter media on our trucks. When a blower component or heat exchanger is genuinely failed, we source OEM replacement parts and tell you plainly rather than cleaning around a problem that will return.
Our technicians are background-checked, uniformed, and identified by name before arrival - Haven Standard Clause 3: Verified Crews. Every job concludes with a Documented Photo Record of every duct run, delivered to you as part of the standard job record. The 365-Day Done Right Promise is backed in writing, not just stated in marketing copy.
Common Carrier Air Duct Cleaning Problems We Fix in Schertz
- Secondary heat exchanger oxide shedding in 59MN7 and 59TP6 furnaces. Carrier’s high-efficiency gas furnaces with secondary heat exchangers can produce flaky oxide that migrates into the supply plenum and coats downstream ductwork. In Schertz, where these furnaces often pair with flex duct systems in unconditioned attics, that oxide combines with attic dust and fiberglass particulate from delaminating duct liner. The result is black grit at supply registers and a metallic smell when heat runs. We clean the full system, seal plenum seams with mastic, and verify the heat exchanger integrity before declaring the job done.
- ECM blower stress cracking flex duct in Infinity and Performance fan coils. Infinity series units like the FE4 and FV4, and Performance series CNPHP and CNPV fan coils, use variable-speed ECM blowers that modulate airflow precisely. When those blowers pull against restrictive or leaking ductwork, static pressure rises and the increased load cracks flex duct at the collar or in the attic run. Schertz’s undersized return ducts - common in subdivisions built along Seguin Road in the early 2000s - make this worse by forcing the blower to work harder for the same CFM. We measure static pressure before and after cleaning to confirm the blower isn’t fighting your ductwork.
- Unfiltered attic air bypassing warped filter cabinets. Factory-installed Carrier filter cabinets can warp or leak at the gasket, especially after years in Schertz attics that exceed 150°F. That bypass lets unfiltered attic air load the evaporator coil and downstream ducts with insulation fibers and fine particulate. During our video inspection, we check cabinet seal integrity and stock replacement gasket kits when needed - a repair that costs less than repeated coil cleanings but gets skipped by crews working fast.
- Return-side velocity pulling attic debris through undersized drops. Carrier air handlers installed on older south-Texas duct systems often have returns that were sized for a smaller system or a less efficient era. The resulting high velocity at the return drop pulls attic insulation and dust past seams and into the coil. In Schertz, this pattern shows up predictably in homes built during the late-1990s through early-2010s growth wave, where regional HVAC subcontractors ran undersized returns to save material. We document the restriction with video, seal accessible seams, and note when return modification - not just cleaning - is the honest fix.
- Mountain cedar pollen loading return-air systems December through February. Schertz’s position on the eastern edge of the Hill Country transition zone brings intense Ashe juniper pollen events that load return-air grilles and duct interiors with fine particulate. Carrier systems with existing filter bypass or coil fouling see accelerated contamination during this season. We schedule preventive cleanings before peak pollen and verify filter cabinet integrity so the media actually catches what it’s supposed to.
BeforeAfterCarrier Parts & Our Repair-vs-Replace Approach
We stock Carrier-compatible OEM-grade door gaskets, collars, flex duct, mastic, and filter media on every Schertz truck. For blower components, heat exchangers, and control boards, we source OEM replacement parts only when the existing component is genuinely failed - not as a default upsell.
If a Carrier coil or heat exchanger has a crack, we say so plainly. Haven Standard Clause 1 means a written price before any work starts, and that price reflects what we believe will actually solve the problem. Sealing around a cracked heat exchanger and selling a cleaning instead is a recipe for a callback and a safety issue we won’t take on. When repair is honest, we repair. When replacement is honest, we write that price too and let you decide.
Most Carrier duct cleaning and sealing jobs in Schertz fall between $380 and $680 for a complete system, depending on duct count, attic accessibility, and whether we’re addressing oxide contamination, torn flex sections, or filter cabinet repairs alongside the standard cleaning scope. We also serve customers looking for Carrier in Universal City. Call (830) 402-5110 for a written estimate - we put our number next to any competitor’s quote under our Free Second Opinion policy.
Our Carrier Service Process - Step by Step
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Diagnosis with video inspection. We camera every accessible duct run before touching equipment. On Carrier Infinity and Performance systems, we also log static pressure at the blower and check ECM amp draw against published specs. The camera shows what the duct interior actually looks like - debris depth, flex duct integrity, plenum seam condition - so the scope of work is visible before priced.
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Written price, then work. Haven Standard Clause 1: you get a written price before any work begins. No exceptions. That price covers the full system, not per-vent add-ons that balloon at the door.
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Full system cleaning with documented photo record. We use Rotobrush and Nikro negative-pressure extraction equipment, with Abatement Technologies HEPA filtration on exhaust. Every duct run is photographed before and after. The photo record is delivered as part of your standard job documentation - not an extra charge, not available only on request.
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Duct sealing and component repair. Where video showed leaks, cracks, or bypass, we seal with mastic, replace damaged flex sections with Guardsman-compatible material, and install Honeywell or Aprilaire media upgrades where the original filter cabinet can’t be restored. We verify blower static pressure has dropped to Carrier’s published range before moving on.
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Testing and warranty documentation. We run the system through heat and cool cycles, verify supply temperature rise and airflow at registers, and provide written documentation of the 365-Day Done Right Promise. If it’s not right, we make it right - backed in writing, not subject to manager approval.
Carrier Products We Service & Install in Schertz
We work on Carrier Infinity series equipment including 24ANB7 and 24VNA air conditioners with FE4 and FV4 fan coils; Performance series 24ACB and 24ACC units with CNPHP and CNPV fan coils; Comfort series 24ABA and 24ABB systems with FV4 air handlers; and Infinity 98 (59MN7) and Performance 96 (59TP6) gas furnaces. We stock compatible service parts for all these lines and can source OEM blower assemblies, control boards, and heat exchanger components when replacement is the honest recommendation.
Our equipment roster - Rotobrush, Nikro, Abatement Technologies, Honeywell, Aprilaire, and Guardsman - is named here so you can verify what we’re using before you agree to a price. Professional-grade tools, maintained on schedule, operated by technicians who are named before they arrive at your door.
We Also Service These Brands
CleanRun Duct Repair & Cleaning is not a single-brand shop. We service Lennox and Trane equipment with the same documentation standards and written-upfront pricing, and our technicians cross-train on all major residential lines. If your Schertz home has mixed-brand equipment from a previous owner’s install, we diagnose the system as configured - not as a brand loyalty exercise.
FAQs - Carrier Air Duct Cleaning Service in Schertz
Yes. Infinity systems with variable-speed ECM blowers modulate airflow based on real-time static pressure readings, so a partially blocked duct or cracked flex run causes the blower to ramp up and work harder rather than simply moving less air. We measure static pressure before and after cleaning to confirm the blower isn’t compensating for duct defects. Standard Comfort series units with fixed-speed blowers don’t behave this way, and our cleaning scope reflects the difference. Call (830) 402-5110 if you’re unsure which system you have - we’ll verify during the free estimate.
The 59MN7 and 59TP6 furnaces use secondary heat exchangers to squeeze extra efficiency from combustion gases. Over time, those heat exchangers can shed flaky oxide that migrates into the supply plenum and coats downstream ductwork. This is a known maintenance reality for these models, not a defect - but it does mean the supply side needs periodic inspection and cleaning beyond what a basic filter change addresses. If you see black grit at registers when heat runs, that’s likely what you’re looking at. We verify heat exchanger integrity as part of our inspection.
Sometimes. On FE4, FV4, CNPHP, and CNPV fan coils, the coil is accessible through a service panel if the installation left adequate clearance. We use borescope cameras to assess coil fouling before deciding whether in-place cleaning will be effective or whether the coil needs to be removed for proper access. If a filter cabinet has been leaking bypass air for years, the coil may be caked hard enough that in-place cleaning just pushes debris deeper. We show you the camera image and write a price for each option.
Significantly. A warped or gasket-failed filter cabinet lets unfiltered attic air bypass the media and load the evaporator coil and downstream ducts with insulation fibers and fine particulate. Cleaning ducts without fixing the cabinet means the contamination source is still active. We stock replacement gasket kits for common Carrier cabinet sizes and include cabinet integrity in our standard inspection. The repair is usually straightforward and costs less than repeated cleanings.
No. Cleaning removes debris but doesn’t restore structural integrity. A cracked flex duct in an attic run - common on Performance systems where the ECM blower has been pulling against restriction - needs to be replaced or properly reconnected at the collar. We document cracks with video, write a price for the repair alongside the cleaning, and verify static pressure has dropped afterward. Cleaning alone would leave you with the same airflow problem and a blower working harder than it should.
Most complete Carrier service in Cibolo and Schertz system cleanings range from $380 to $680, depending on duct count, attic accessibility, and whether we’re addressing secondary issues like oxide contamination, torn flex sections, or filter cabinet repairs. We do not quote per-vent prices or teaser rates that change once the truck is on your drive. Haven Standard Clause 1 means one written price per system, agreed before work starts, every time. Call (830) 402-5110 for an exact quote - estimates are free, and we’ll put our number next to any competitor’s written estimate under our Free Second Opinion policy.
Book Your Carrier Service in Schertz, TX
Call (830) 402-5110 to schedule your Carrier air duct cleaning, repair, or sealing. A live person answers, 24/7. We’ll send a background-checked, uniformed technician identified by name, camera every duct run before touching equipment, and deliver a written price before work begins. Every job concludes with a Documented Photo Record and the 365-Day Done Right Promise - backed in writing, not just stated in marketing copy.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning Schertz, serving Schertz since 2013.