I've been a bit gun shy about replacing a thermostat due to the wiring involved and the fact that the one I was replacing was really old (see pic) but this one stopped working (no heat) and it was cold so I went ahead and installed the ecobee 3 i won a while back through referrals.
I was happily surprised that once I had figured out how to power off the furnace (most of that time involved finding it first) the process was really quick. I was getting ready to do the extra wiring at the furnace but then realized the old thermostat had a C wire so I was able to skip that step. the ecobee instructions book and the installation instructions on the app were really helpful.
Anyone else getting ready to replace their thermostat or done so recently?