Trane has built heating and cooling equipment for more than a century, and its air conditioners, heat pumps, furnaces and air handlers have a reputation for durability. Durable does not mean maintenance-free. A Trane system that has run for many years in a Novato, San Rafael or Larkspur home will eventually need motors, capacitors, contactors and thermostats, and on older units the refrigerant it uses becomes part of the conversation. Most of those repairs are worth doing; a few are the signal to plan for replacement.
Why long-lived systems still need repairs
The cabinet, coils and compressor of a well-built system can outlast the parts that do the switching and spinning. Over the years we expect to replace:
- Capacitors, which lose capacity with heat and age until the motor they serve struggles to start;
- Contactors, whose contacts pit and burn until the outdoor unit hums or will not start;
- Fan and blower motors, whose bearings wear and get noisy before they seize;
- Igniters and flame sensors on gas furnaces;
- Thermostats, which fail outright or drift out of calibration.
Each is a single-part repair when it is caught early. A noise that grows louder over weeks, a slow start or a furnace that takes two tries to light are early warnings worth a call.
Variable-speed systems and advanced thermostats
Higher-end Trane systems use variable-speed blowers and compressors and a communicating thermostat that controls the whole system. They run longer at lower output, which is normal, and they store fault information in the control. We read that first, then confirm with measurements, because a fault message names a circuit rather than a specific part. A communicating system also depends on its wiring, so a loose or damaged control wire can look like a failed board.
Air handlers and heat pumps
Many Trane heat pumps work with an air handler indoors instead of a furnace. The air handler holds the blower, the indoor coil, the drain pan and often electric heat strips for backup. On a heat pump call we test the defrost control, the reversing valve and the backup heat as well as the cooling side. See heat pump services.
Irregular heating or cooling
When a Trane system stops holding an even temperature, the first suspects are simple: a thermostat that has lost its settings or reads wrong, and a clogged filter that has cut the airflow. Both are checked before refrigerant or motors. Worn or loose parts come next; our strange noises page explains which sounds mean “turn it off now”.
R-22 and the repair-or-replace question
Trane systems installed before 2010 often use R-22 refrigerant, which is no longer produced in the United States. The remaining supply is recycled and keeps getting harder to find. That changes the math: replacing a capacitor or a fan motor on an R-22 system is still a sensible repair, but a big leak or a compressor failure usually is not. If the numbers point to replacement, we lay out both options with itemized prices; AC installation explains what a new system involves.
Light commercial Trane equipment
Trane also builds packaged and split equipment for small commercial buildings. Shops and offices with Trane rooftop or split systems are covered by our commercial HVAC service.
What you can expect
We are independent and not affiliated with Trane. You get an itemized price after the diagnosis, factory certified parts that carry the manufacturer’s warranty, and a labor warranty on our work. A real person answers the phone 24/7, and same-day service is usually possible when you call before noon.