Upon returning from travel I found error codes on my Trane thermostat. My heating and cooling system was installed by Dayco ~10 years ago and they have been servicing the system since it replaced the

Scheduled a service call for 4:30pm. Waited for an hour. No one showed. Called to see what happened. They claimed the tech was here and waiting. Not possible. I was here the whole time. Now it's "afte