Trane equipment turns up often in Mill Valley homes: gas furnaces in crawlspaces and hall closets, air conditioners and heat pumps on decks and hillside pads. The company traces its history back to 1885 and has a reputation for durable equipment, but Mill Valley’s damp air, shaded lots and falling redwood needles wear on any system. We repair, maintain and install Trane furnaces, air conditioners and heat pumps across town as an independent company with no tie to the manufacturer.
Trane equipment we work on
- S-Series gas furnaces, from standard 80% AFUE models to high-efficiency condensing furnaces.
- XV, XR and XB series air conditioners and heat pumps, from variable-speed XV models to the entry-level XB line, including XV heat pumps.
- ComfortLink II communicating thermostats and controls.
- Older Trane systems, which we diagnose and keep running or help you replace.
Trane technology, and what it means for service
TruComfort variable-speed systems run for long periods at low capacity instead of switching on and off. They are quiet and even, but they depend on matched components and electronic controls. When one misbehaves, the diagnosis starts with the control’s fault history rather than a guess at parts.
ComfortLink II communicating controls let the thermostat, the furnace or air handler and the outdoor unit share information. That makes diagnosis easier, but replacement parts and thermostats have to be compatible with the communicating system.
Climatuff compressors are built for long service, and when one does fail, something else often failed first: a weak capacitor, a low charge or a dirty coil that made it run hot. We look for that cause so a new compressor does not fail the same way.
Spine Fin coils use a different fin design from the usual plate fins. They should be cleaned with low-pressure water, never a pressure washer, and kept free of the debris that collects under Mill Valley’s trees.
Common Trane repairs in Mill Valley homes
| Problem | Typical cause | What we do |
|---|---|---|
| Furnace lights, then shuts down | Dirty flame sensor, often in a dusty crawlspace | Clean or replace the sensor |
| Furnace will not start, light flashing | Pressure switch, inducer, or a blocked condensate trap on a high-efficiency model | Read the code, test and repair |
| AC or heat pump hums, fan still | Capacitor or fan motor | Replace the failed part |
| Coil matted, poor cooling | Needles and leaf litter on the outdoor coil | Clean, then check the charge |
| Heat pump iced over | Defrost sensor or control fault | Test defrost and repair |
More detail is on our Mill Valley pages for AC repair, heat pump repair and furnace repair.
Maintenance and replacement
A yearly AC tune-up and a fall furnace check keep Trane equipment running as designed, and a maintenance record helps if you ever need to make a warranty claim. When it is time to replace, we price new Trane equipment alongside other brands so you can compare, and we explain how a new furnace or new AC fits your house.
More about the brand is on our Trane page, and we also service Trane in Tiburon and Belvedere. Other brands common in town include Carrier and Lennox. The Mill Valley page lists everything we do locally.