Furnace & heating
AC repair
Ductless mini splits
TraneSeasonal tune-up and full diagnostic on your Carrier, Trane, or Goodman system - readings shown to you before any repair is proposed
Diagnosis first, numbers second - you approve the repair price before a single part goes in.
Get your free estimateWhy Pasadena Homeowners Choose Trane HVAC
Dalton Heating & Air Pasadena provides independent Pasadena Trane service, repair, and installation across Pasadena and nearby foothill neighborhoods, with written pricing before any work starts and a one-year written guarantee on every repair. Our technicians work on current Trane XR and XV lines as well as legacy XL and Ameristar equipment, including variable-speed and communicating systems that many shops won’t touch. We are not affiliated with or authorized by Trane, so we diagnose what’s actually failing and repair it without being locked into manufacturer warranty protocols. Call (626) 657-5344 for Trane service in Pasadena.
Key Takeaways
- Trane AC repair in Pasadena typically runs $150 – $650; furnace repair runs $150 – $700.
- We service Trane XR, XV, XL, and Ameristar lines, including variable-speed and communicating systems.
- Every repair includes a written price before work begins and a full-year written guarantee.
- We’re an independent Trane service provider, not a factory-authorized dealer, which means faster, warranty-safe repairs using OEM or quality aftermarket parts based on what’s best for your system.
- Pasadena heat waves push Trane capacitors and condenser fan motors harder than milder coastal zones, and we stock the common failure parts locally.
Styles & brands we work with




Why Trust Dalton Heating & Air Pasadena for Your Trane HVAC?
Trane builds equipment that lasts, but every brand has its weak points, and in Pasadena’s climate those weak points show up on schedule. Our technicians have spent years opening up Trane condensers, furnaces, and air handlers in this city, and that means we know which capacitors bulge first on an XR14 after a July heat wave, which control boards throw communication errors on an XV20i, and which legacy XL coils leak at the transition joints. Marco Benitez, our owner and lead technician, trained in refrigeration and HVAC systems at Los Angeles Trade-Technical College and has been working on Trane equipment in Pasadena homes long enough to recognize a failing part by the sound it makes before the system shuts down entirely.
We carry OEM Trane motors, and we keep Titan HD capacitors and aftermarket ignitors on the truck for same-day fixes when a factory part would take a week to arrive. Every Trane repair we do follows the same discipline: diagnose the actual fault, put the price in writing, do the work by the book, and guarantee it for a full year. If the repair fails inside that year, we return at no charge, that’s The Garrison Standard, and it’s been how Dalton Heating & Air has operated since 2003.
Common Trane HVAC Problems We Fix in Pasadena
- Condenser fan motor burnout on XR13 and XR14 units. Pasadena regularly hits triple digits in July and August, and a weak dual-run capacitor forces the fan motor to work harder until it overheats. We see dead fan motors on 8-to-12-year-old XR units every summer, usually with a bulged or split capacitor sitting right next to them. The fix is a new motor and capacitor, often same-day.
- Evaporator coil leaks on 10-to-15-year-old Trane XL and XR systems. The transitional joints where aluminum meets copper are a known corrosion point on older Trane coils. By the time you notice warm air or a frozen indoor coil, the system has been losing refrigerant slowly for weeks. We pressure-test with nitrogen, locate the leak precisely, and repair or replace the coil based on age and condition.
- Ignitor and flame sensor failures on XV80 and XV90 furnaces. Trane gas furnaces use a silicon nitride hot-surface ignitor that can crack after years of cycling. When it fails, the furnace attempts ignition, fails, and locks out for safety. A cracked ignitor is a straightforward fix, and a dirty flame sensor is even simpler. We clean or replace these during tune-ups and service calls alike.
- Communicating thermostat and control board errors on XV18 and XV20i systems. These variable-speed heat pumps and air conditioners rely on digital communication between the thermostat and the outdoor control board. When a wire is loose, a board is failing, or firmware has glitched, the system throws error codes and stages erratically. We carry diagnostic tools that read Trane’s communication protocol directly, which cuts diagnosis time from hours to minutes.
- Short cycling and lockouts on Trane heat pumps during Pasadena winters. When temperatures drop near freezing at night, a Trane heat pump in heat mode can trip defrost errors or lock out due to a failing reversing valve, low refrigerant, or a dirty outdoor coil. We trace the lockout code and fix the underlying fault rather than clearing the code and hoping it holds.
Trane Parts & Our Repair-vs-Replace Approach
On a Trane system, we default to genuine Trane parts when they’re available and when compatibility is critical, things like variable-speed fan motors, communicating control boards, and compressor components. But for commodity parts like capacitors, contactors, flame sensors, and ignitors, we use quality aftermarket components from distributors like Johnstone Supply and Ferguson. A Titan HD capacitor rated for high-temperature environments costs less than a factory capacitor and often lasts longer in Pasadena heat. We’re direct about which is which: if we’re putting an aftermarket part on your Trane, we’ll tell you why and show you the spec.
When it comes to repair versus replace, our rule is straightforward. We recommend replacement only when a major component fails on a system older than 12 years, a compressor, a heat exchanger, or an indoor coil, or when refrigerant issues persist after two or more recharges. If your Trane is 8 years old with a failed capacitor, we replace the capacitor and tell you to expect another 5 to 7 years from the system. If your 14-year-old XL has a leaking evaporator coil and low refrigerant, we’ll give you a written quote for a new system and a separate price to patch the coil, and we’ll explain the trade-offs without pressure. Call (626) 657-5344 for an honest assessment.
Our Trane Service Process – Step by Step
Here’s how Trane service works with Dalton Heating & Air Pasadena, from the first call to the final test:
- 1
Diagnosis with Trane-specific tools. We arrive inside the stated window, in uniform and background-checked. For communicating systems like the XV18 and XV20i, we connect a diagnostic reader that pulls error codes and operational data directly from the control board. For mechanical failures, we test capacitors, contactors, motors, and refrigerant pressures, and we show you what we found.
- 2
Written price before any work starts. Once the fault is confirmed, we write down the exact repair, the part we’ll use, and the total price. You sign off before we touch a wrench. No revisions at the invoice stage, that’s not how we work.
- 3
Repair or installation to Trane spec. We install OEM Trane parts where it matters and quality aftermarket parts where they outperform or cost less. Every repair follows Trane’s service documentation for torque, charge, and clearance.
- 4
System test and verification. We run the system through a full cycle and verify the numbers, temperature split, amp draw, refrigerant pressures, and thermostat communication. On our Altadena XR14 job, after replacing a burned-out fan motor and a failed dual-run capacitor, we checked amp draw and watched the system pull down to a 20°F temperature split within 30 minutes.
- 5
Written warranty and clean site. Every repair carries a one-year written guarantee. If it fails within that year, we return at no charge. We leave the site clean and hand you the paperwork before we go.
See the difference
Before
After
Before
After
Before
AfterTrane Products We Service & Install in Pasadena
We service and install across the Trane residential line, including El Monte Trane service areas. On the current side, that includes the XR series (XR14, XR16, XR17), the variable-speed XV series (XV18, XV20i heat pumps and air conditioners), and the XV80/XV95 gas furnaces. We also work extensively on legacy equipment, particularly the XL series (XL16i, XL19i) still running in many older Pasadena homes, and the budget-oriented Ameristar line. Our trucks carry common Trane failure parts, capacitors, contactors, ignitors, flame sensors, fan motors, and thermostat components, so many repairs in Pasadena are completed on the first visit.
We Also Service These Brands
Trane is one of nine major HVAC brands our technicians are factory-trained to service. We also work daily on Carrier and Lennox equipment, along with Goodman, Rheem, York, Daikin, Bryant, and American Standard. That matters because a multi-brand technician recognizes a Trane-specific failure faster than a single-line dealer who only sees one equipment family, and we bring that cross-brand experience to every Trane call, including Trane HVAC in East Los Angeles, CA.
FAQs – Trane HVAC Service in Pasadena
The most common cause on an XR13 in Pasadena is a failing dual-run capacitor that’s lost its microfarad rating, causing the condenser fan motor to overheat and cut out on thermal overload. We’ve diagnosed this exact issue on an XR14 in Altadena where the capacitor read 12μF when it was rated for 45/5μF, and the fan motor winding had already burned out. The fix is replacing the capacitor and the motor, and we can typically do that same-day. Call (626) 657-5344 for a diagnostic visit in Pasadena.
Yes, many XV20i communication errors are caused by loose wiring, a failing transformer, or a dirty connection at the outdoor control board, not the thermostat or board itself. We read the error codes directly with Trane-compatible diagnostic tools, clear the fault, and then test the system under load before recommending any parts. Replacing a communicating thermostat or control board is a last resort, and we’ll show you the diagnostic data before we quote that repair.
Short cycling followed by a lockout on an XV80 is usually the hot-surface ignitor failing to maintain flame, a flame sensor that’s coated with carbon and not sending a proper signal, or a limit switch tripping due to restricted airflow. In Pasadena homes with original ductwork, a dirty filter or a crimped return can starve the furnace for air and trigger the limit switch. We check the ignitor and sensor first, then verify airflow and static pressure before concluding the repair.
The decision comes down to where the leak is and the coil’s age. Leaks at a braze joint or a single accessible tube can usually be repaired with proper refrigeration techniques, while corrosion pitting across a wide area or a failure at the aluminum-to-copper transition joint on a 12-plus-year-old coil generally means replacement. We locate the leak with nitrogen pressure testing and an electronic leak detector, then show you the exact spot and explain the repair versus replacement math in writing before you decide.
A heat pump in heat mode that blows cold air is often stuck in defrost, low on refrigerant, or has a failing reversing valve that won’t shift from cooling to heating. Pasadena winter nights can drop near freezing, and a heat pump that can’t extract heat from the outdoor air will run constantly and never satisfy the thermostat. We diagnose the reversing valve, check the defrost sensor and refrigerant charge, and fix the actual fault so your heat pump heats again.
How much does Trane HVAC service cost in Pasadena?
| Service | Typical Cost |
|---|---|
| Trane AC Repair (diagnostic + common part) | $150 – $650 |
| Trane Furnace Repair (e.g., ignitor replacement) | $150 – $700 |
| Trane AC Installation (full system) | $3500 – $7500 |
| Trane Furnace/AC Tune-Up | $80 – $200 |
Every repair includes a written price before work begins and a one-year written guarantee through our AC Repair services. Call (626) 657-5344 for an exact quote, estimates are free.
Book Your Trane Service in Pasadena, CA
If your Trane system is acting up or you want a tune-up before the next Pasadena heat wave, call Dalton Heating & Air Pasadena at (626) 657-5344. A live person answers 24/7. We’ll schedule a window, show up on time, and put the price in writing before any work starts.
Written by Marco Benitez, Owner & Lead HVAC Technician at Dalton Heating & Air Pasadena, serving Pasadena and the surrounding foothills since 2003.