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.
Why Pasadena Homeowners Choose Trane Air Duct Cleaning
We provide independent Pasadena Trane service for air duct cleaning, sealing, and repair throughout Pasadena, CA. Our crews work inside Trane duct systems, air handlers, and condensers every week, so we know exactly how these units behave after years of Santa Ana dust loading and dry summer heat. We’re not a Trane dealer or an authorized Trane service provider, and we say that plainly. What we are is a local Pasadena company with hands-on knowledge of Trane’s residential splits, gas furnaces, and packaged units, and the duct failures that quietly rob them of airflow. Call (626) 469-5477 for a written estimate before any work starts.
Why Trust Hollis Air Duct Pasadena for Your Trane Air Duct Cleaning?
Roy Castellanos grew up in East Los Angeles and learned the mechanical side of HVAC at Los Angeles Trade-Technical College before spending years doing hands-on duct work. He brought that training west to the San Gabriel Valley, and for over a decade our crews have cleaned and sealed Trane duct systems in Pasadena homes, including plenty of older places near the Rose Bowl where the ductwork hasn’t been touched since the Reagan administration. The duct work doesn’t lie, and neither do we.
That means our technicians arrive knowing what to look for inside a Trane system before they open the first access panel. Trane builds high-efficiency equipment that runs tight tolerances, especially the variable-speed XV20i line. A duct system that’s oversized, undersized, or leaky works against those tolerances. We measure static pressure, inspect the plenum and return path, and clean what needs cleaning without inventing repairs the system doesn’t need. Every job gets a written price before we begin, and every job carries our 365-Day Done Right Promise in writing. If our work fails within a year, we return at no charge, including a free second visit. Technicians are background-checked and uniformed, and our phones are answered by a live person around the clock.
Styles & brands we work with
Common Trane Air Duct Cleaning Problems We Fix in Pasadena
Here’s what we actually find inside Trane systems across Pasadena, from Bungalow Heaven to the Arroyo neighborhoods, and why Air Duct Cleaning matters for long-term performance. These aren’t theoretical failure modes; they’re the patterns that repeat year after year.
- Trane XV20i variable-speed systems tripping limit switches during cooling season. The XV20i runs at low, steady airflow for long cycles. When dust builds on the blower wheel and evaporator coil, static pressure climbs. The system’s safety limits trip to protect the compressor, and the homeowner sees intermittent shutdowns. A filter change doesn’t fix it because the restriction is downstream. We clean the blower wheel and coil, measure static pressure before and after, and confirm the readings return to Trane’s published specifications.
- Mold growth on S9V2 evaporator coils from Pasadena’s dry winters and humid spring dew points. Pasadena winters are dry, which lets biological material bake onto coil surfaces. Spring brings dew points that turn that fine organic dust into a damp, sticky film on the coil. The S9V2’s dense coil fins hold that moisture longer than older coil designs. We clean evaporator coils with commercial-grade coil cleaners and negative-air containment, not a spray bottle and a shop vac.
- 40% return blockage from collapsed flex duct on XV20i systems in older Pasadena homes. We opened a return plenum on a Trane XV20i in a 1950s craftsman near the Arroyo and found a collapsed flex duct choking the return path. The homeowner had been told they needed a new compressor. We re-routed the return, sealed the plenum with mastic, brought static pressure down to Trane specs, then cleaned the blower wheel and coil. The intermittent short-cycling stopped. No compressor replacement needed.
- Fiberglass duct liner separation in older Trane commercial packages shedding particles into supply air. Duct liner breaks down with age, especially when Pasadena’s dry heat cycles bake the adhesive. Once it delaminates, those fine glass fibers blow straight into the living space. We see this on older Trane packaged units converted for residential use or on larger Pasadena homes with commercial-style trunk lines. The fix is removing compromised liner and resealing with mastic and commercial-grade insulation.
- Plugged condensate lines on XR13 condensers from pine needle debris. Trane XR13 condensers sit close to the ground, and Pasadena’s mature pine trees drop oily needles that lodge in the coil fins and drain pan. The debris blocks the condensate path, water backs up, and the pan overflows or the system shuts down. Hosing off the outside doesn’t clear what’s packed inside the coil. We pull the debris from the coil depth, flush the line, and confirm proper drainage before we leave.
Trane Parts & Our Repair-vs-Replace Approach
When a Trane duct system must match factory airflow specifications, we use genuine Trane OEM components. If the blower needs a replacement wheel, the plenum needs a specific fitting, or the damper assembly has to meet a published static pressure rating, we install Trane parts. No argument there.
But for sealing, flex duct repair, and insulation, we use commercial-grade products that outperform most builder-grade original materials. A quality mastic sealant, properly applied, outlasts the factory tape job on nearly every system we open. We never sell duct replacement when targeted sealing or cleaning restores Trane-rated static pressure. If a duct can be cleaned and sealed back to spec, we clean it and seal it. If it’s crushed, torn, or undersized for the system it serves, we say so and show you the measurements on a video inspection. You get a written price either way before any work begins. Call (626) 469-5477 if you want an honest read on your Trane duct work.
Our Trane Service Process – Step by Step
- 1
Diagnosis and pressure measurement. We measure static pressure at the return and supply plenums and compare it to Trane’s published specifications for your specific model, whether that’s an XV20i, XR13, S9V2, or RunTru packaged unit. We also run a video inspection through the duct lines to document exactly what’s inside before we recommend anything.
- 2
Written proposal with a fixed price. We write down what we found, what we recommend, and what it costs. The price does not move. If we find something else during the job, we stop, show you, and get your approval before proceeding. No surprise invoices.
- 3
Cleaning, sealing, and repair by the book. We use negative-air machines from Nikro, rotary brush systems from Rotobrush, and commercial-grade mastic sealant applied to every accessible joint and plenum seam. Evaporator coils are cleaned with the proper chemistry for Trane’s fin density, not generic spray cleaner.
- 4
Post-service testing and documentation. We re-measure static pressure, verify airflow at the registers, and confirm the system is running within Trane’s specified range. We show you before-and-after photos or video of your own duct work so you know the job was actually done.
- 5
Written warranty. Every repair and cleaning is covered by our 365-Day Done Right Promise. If our work fails within a year, we return at no charge, including a free second visit. That’s written on the invoice, not promised over the phone.
See the difference
Before
After
Before
After
Before
AfterTrane Products We Service & Install in Pasadena
Our crews also handle Trane repair in Glendale and service and maintain duct systems connected to the full Trane residential lineup. That includes the XV20i variable-speed heat pump and air conditioner, the XR13 air conditioner, S9V2 gas furnace, and RunTru by Trane packaged units. We also work on Trane air handlers of any era, from modern variable-speed units to older single-stage systems still pushing air through original galvanized duct work in Pasadena’s 1920s and 1930s homes. We stock common Trane-compatible duct fittings, mastic sealant, flex duct, and coil cleaning supplies locally for fast turnaround on typical repair jobs in Pasadena without waiting on a distribution center.
We Also Service These Brands
While Trane systems are a big part of our Pasadena workload, we service and clean duct work connected to Lennox and Carrier equipment every week. The duct side of the job is what we do best, regardless of whose name is on the condenser. If you have a Carrier furnace paired with 30-year-old duct work in a Bungalow Heaven home, we’ll give you the same written price and the same 365-Day Done Right Promise.
FAQs – Trane Air Duct Cleaning Service in Pasadena
The most common cause we find in Pasadena is high static pressure from a dirty blower wheel and evaporator coil, not a dirty filter, which is why Trane Air Duct Cleaning in Downtown Los Angeles, CA follows the same diagnostic approach we use here. The XV20i runs long, low-speed cycles that allow fine dust to accumulate on the wheel blades and coil fins. That buildup restricts airflow, static pressure rises, and the limit switch trips to protect the compressor. Cleaning the filter doesn’t remove the restriction downstream. We measure static pressure, clean the blower wheel and coil, and re-measure to confirm the system returns to Trane’s factory airflow specs. Call (626) 469-5477 for a written diagnosis.
Yes, in most Pasadena installations we can access and clean the S9V2 evaporator coil through the existing access panel using negative-air containment and coil-cleaning chemistry matched to Trane’s fin density. Pulling the entire air handler is rarely necessary. If access is tight due to a cramped attic or closet install, we’ll tell you before we quote, and the written price reflects the actual work involved.
The sealing method is the same across brands, but Trane’s high-efficiency variable-speed systems are less forgiving of leaky ducts than older single-stage units. A 20% duct leak on an XV20i causes more noticeable comfort and efficiency loss than the same leak on a basic single-stage system. We use mastic sealant applied to every accessible joint, plenum seam, and connection, which outperforms foil tape over time. For any Trane system, the goal is to match the manufacturer’s static pressure specification, and we measure before and after to prove the seal worked. Call (626) 469-5477 for a static pressure test and written estimate.
Pasadena’s hot, dry summers combined with Santa Ana winds load fine dust and pollen into condenser coils, and older neighborhoods with mature pine trees add oily needle debris that water alone won’t remove. The oily residue bonds with fine dust and packs into the coil depth, restricting airflow and raising head pressure. Hosing the outside cools the fins but doesn’t clear the packed material inside. We clean the coil thoroughly and clear the condensate path so drainage works. A quick call to (626) 469-5477 gets you a written price for coil cleaning before we show up.
If the duct work is intact, properly sized, and seals up to spec after cleaning, yes, reuse it. Age alone doesn’t condemn duct work. We’ve cleaned 50-year-old galvanized duct in Pasadena craftsman homes that sealed beautifully and performed within Trane’s static pressure target after mastic sealing. What condemns duct work is damage: collapsed flex, torn trunk lines, undersized returns, or liner breakdown. We’ll show you video of what’s actually inside your ducts before we recommend replacement, and we never push replacement when targeted sealing or cleaning restores proper airflow.
Whole-system air duct cleaning for a typical Pasadena home, including the return and supply lines, blower, and coil access, generally runs $450 to $900 depending on system size, number of stories, and access difficulty. A video inspection before cleaning costs $99. Duct sealing with mastic typically adds $250 to $600 based on the number of accessible joints and plenum seams. Every price is written before work starts, and the number doesn’t move. Call (626) 469-5477 for a free written estimate specific to your Trane system and your home’s duct layout.
Book Your Trane Service in Pasadena, CA
If your Trane system is short-cycling, dusty, or tripping its limit switch, call us. We’ll measure static pressure, run a camera through your ducts, and give you a written price before any work begins. Call (626) 469-5477 for a free estimate, backed by our 365-Day Done Right Promise.
Written by Roy Castellanos, Owner at Hollis Air Duct Pasadena, serving Pasadena since 2004.