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.
Why Los Angeles Homeowners Choose Trane Air Duct Cleaning
We provide independent Trane air duct cleaning, duct sealing, and evaporator coil cleaning for Trane service in Los Angeles. We are not a Trane dealer and we are not authorized by Trane. What we are is a crew that has opened enough Trane systems in LA attics and on LA rooftops to know exactly where they fail, why they fail, and what to do about it. If you own a Trane system and the air moving through your ducts isn’t clean, call (361) 326-5060 and we will give you a written price before any work starts.
Why Trust Hollis Air Duct Cleaning for Your Trane Air Duct Cleaning?
Trane builds dependable equipment. But the ductwork attached to it, and the plenums and filter racks inside the cabinet, have specific failure patterns that generalist duct cleaners misdiagnose every week in Los Angeles. Roy Castellanos, our owner, grew up in Boyle Heights and learned the mechanical trades at Los Angeles Trade-Technical College before spending years doing hands-on duct work across LA County. He has seen Trane systems in every configuration this city throws at them: attic-mounted XV80s in Sherman Oaks, rooftop packaged XBs in the Valley, ComfortLink II zoning systems in DTLA high-rises. That field experience means we don’t guess. We open the cabinet, read the static pressure, and tell you what’s actually happening. Every technician who walks into your home is background-checked and uniformed, and every job gets a written price and the 365-Day Done Right Promise: if it’s not done right, we come back and make it right at no charge, within a full year. That’s the Garrison Standard, in writing, on every Trane job we do.
Common Trane Air Duct Cleaning Problems We Fix in Los Angeles
Here’s what we actually see in Trane systems across Los Angeles, week after week. These aren’t theoretical failure modes; they’re the real reasons Trane owners call us.
- Delaminated factory duct-board plenums on Trane cased coils. Trane ships many of its cased coils with a pre-formed duct-board plenum attached. That plenum sits in LA attics where summer temperatures regularly exceed 130 degrees. After eight to ten years of that heat cycling, the foil-facing delaminates and the fiberglass board starts shedding into the supply trunk. The homeowner sees white or gray dust at every supply grille. The fix is cleaning the full system and replacing that plenum with sealed sheet metal. We do not rebuild it with more duct board.
- Trane Hyperion air handler cabinet gaskets and filter-rack bypass. The Hyperion cabinet’s factory gaskets break down over time, and the standard 1-inch filter rack lets return air slip around the filter. Unfiltered air coats the evaporator coil and the blower wheel. That’s why a Hyperion blower that should be clean can look like it’s been in a woodshop for five years. We clean the coil and blower, then seal the rack so the filter actually filters.
- Undersized returns on Trane XR systems pulling attic and garage air. In Los Angeles tract homes, a Trane XR15 or XR17 air conditioner may have been installed with a return that’s too small for the system’s CFM. The blower compensates by pulling air through every gap in the return plenum: attic air, garage air, air from inside walls. That air carries dust, insulation particles, and whatever else is up there. We find the routing, seal the gaps, and bring the static pressure back where Trane designed it to run.
- Variable-speed blowers masking crushed or separated flex runs. Trane variable-speed ECM blowers hold static pressure against restrictions longer than PSC motors do. A crushed flex run or a separated takeoff in the attic may not announce itself for years. The blower works harder, the ECM module gets hot, and eventually the motor fails. When we clean a Trane system with a variable-speed blower, we always check static pressure and inspect accessible flex runs. It’s routine for us; it’s a $900 module replacement if it’s missed.
- Rooftop Trane XB and XR packaged units with leaking return plenums. Many LA rooftops, especially on commercial and multi-family buildings, use Trane packaged units. The return plenum on the roof is exposed to sun, rain, and Santa Ana wind. Seams fail, water and dirt get pulled in, and the evaporator loads up with grime far faster than it should. Cleaning the ducts without fixing the rooftop plenum is a waste of money. We fix the plenum, then clean the system.
Trane Parts & Our Repair-vs-Replace Approach
We keep genuine Trane-compatible replacement parts on our vans for the failures we see most in Los Angeles: plenum gaskets, filter racks, drain pans, and ECM module harnesses. Where OEM adds no value, we use quality aftermarket flex duct, mastic, and foil tape. On a Trane system, our default is repair over replace. The cabinet and coils on a Trane XV80 or XR15 will typically outlast the electronics by a decade. Unless the compressor or heat exchanger is condemned, there’s usually a repair that makes more sense than a new system. We will tell you when that is no longer true. Call (361) 326-5060 and we will put our findings in writing, with prices, before any work begins.
Our Trane Service Process – Step by Step
- 1
Diagnosis. We inspect the full duct system, including what’s inside the Trane cabinet. Static-pressure reading at the air handler, visual inspection of the plenum, return, filter rack, coil, and blower. We also check accessible flex runs and takeoffs. The goal is finding the source of the problem, not just the symptom.
- 2
Written proposal. We write down exactly what we’ll do and what it costs. One flat price per system. That number does not move when we’re inside your attic.
- 3
Cleaning and sealing. We clean the full duct system, the evaporator coil, and the blower. If the plenum is delaminated, we replace it with sealed sheet metal. If filter racks are bypassing, we seal them. If returns are undersized or leaking, we address the source.
- 4
Verification. We re-test static pressure and show you before-and-after photos of the inside of your own ducts. No mystery about what was done.
- 5
Warranty in writing. Every job carries the 365-Day Done Right Promise. If it fails within a year, we return and make it right at no charge, including a free second visit.
Trane Products We Service & Install in Los Angeles
We service Trane in San Diego and the equipment most common across Los Angeles, from the San Fernando Valley to the Westside to downtown: Trane XV80 and XR80 furnaces with matching cased coils; Trane XR15 and XR17 air conditioners paired with Tempo or Hyperion air handlers; Trane XB and XR series packaged units on rooftops; and Trane ComfortLink II communicating systems with zoning. We stock compatible gaskets, filter racks, drain pans, and ECM harnesses locally, so a common Trane repair doesn’t wait on a parts shipment. Full system cleaning, duct sealing with mastic, and evaporator coil cleaning are the core of what we do on Trane equipment every day.
We Also Service These Brands
Trane is our focus on this page because that’s what you own. But our crews work on Lennox and Carrier systems across Los Angeles just as often. The same discipline applies: written price first, done by the book, clean site when we leave. If you have a mixed-brand house, that’s normal. We handle it.
FAQs – Trane Air Duct Cleaning Service in Los Angeles
No. We are an independent Trane air duct cleaning specialist in Los Angeles, not an authorized or affiliated Trane dealer. That independence means we answer to you, not to a manufacturer’s sales quota. We repair and clean what’s failing and leave what’s working alone.
It’s common, but it’s not acceptable. The Hyperion cabinet’s factory filter rack often leaves a gap around the 1-inch filter, and the gaskets break down over time in LA’s heat. Dust bypassing the filter coats the coil and blower. We seal the rack and gaskets, then clean the coil and blower. If you see dust streaks around your filter, call (361) 326-5060 for an inspection.
Yes. Attic-mounted Trane XV80s, especially in Sherman Oaks and Valley homes and for Trane in Fresno, sit in 130-degree heat that accelerates plenum delamination and gasket failure. We always inspect the duct-board plenum and cabinet seals as part of a cleaning. A straight duct cleaning without doing that misses the problem that’s actually causing your dust.
Yes. We avoid disturbing the zone dampers and their controls. We cut access near the air handler, clean through the main trunk, and seal access with mastic. Zone dampers stay untouched unless we find a reason they’re already failing, in which case we document it and explain your options.
Often, yes. A Trane variable-speed blower running flat-out is usually fighting a restriction: a crushed flex run, an undersized return, a dirty coil, or a clogged filter. The ECM blower compensates by ramping up, which masks the problem until the module overheats. We measure static pressure, find the restriction, and correct it. If you are hearing 100 percent blower speed on a mild day, call (361) 326-5060.
We price one flat rate per system, written down before work starts. In the Los Angeles market and for Trane repair in Long Beach, that typically ranges from $450 to $1,200 depending on system size, number of returns, and whether the coil and blower need cleaning too. A delaminated plenum or sealed filter rack adds to the job, and that cost is also in writing before we start. Call (361) 326-5060 for an exact price on your Trane system.
Where a genuine Trane-compatible part matters functionally, we use it. For plenum gaskets, filter racks, drain pans, and ECM harnesses, we keep Trane-compatible parts stocked locally. For flex duct, mastic, and foil tape, quality aftermarket material does the job as well or better than OEM without adding cost. We’ll tell you which is which and why.
Book Your Trane Service in Los Angeles, CA
If your Trane system is moving dirty air, don’t guess. We’ll inspect it, write down what we find, and give you a price that doesn’t move. Call (361) 326-5060 for a free estimate on Trane air duct cleaning anywhere in Los Angeles.
Clean ducts, straight answers – that’s the whole job.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Los Angeles since 2004.




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