I just ordered an Ecobee 3 and sensors to install. Its my first step into HomeKit and was curious if anyone had an tips or advice in setting this up. We have a two zone system (one for each floor), but I'm going to just put in one for downstairs first to see how it works. We have had a problem with our master bedroom (downstairs) always being really hot or cold compared to the rest of the first floor. There should have been a third zone for this room because its fairly isolated from the main part of the first floor where the thermostat is. On cold nights in the winter, its brutal. I'm hoping the Ecobee will do the trick with its sensors and programability. Assuming this works, I'm sure I'll be buying a lot more homekit devices.