What home thermostat do you have?

livefromDC said

Yep...


Yeah, I've only ever heard of 2 problems with Ecobee. The first, people who try to install it themselves and don't know what they're doing. I got my tech straight from Ecobee and he said this was usually their issue. The second, is people thinking that there's a little oval piece of peel away plastic on the face of the thermostat itself. That's actually a room sensor, he said you'd be surprised how many people sit there and scrape it away despite it resisting being peeled.

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I had the C wire issue two different ways. The first time I installed upstairs (don't disrupt the main living area first). Old wiring in the house and got the wires backwards. Had heat when A/C kicked on. Talked to Ecobee support and got it straightened out. So I figured I could apply that lesson learned downstairs and be good to go. Only I have a Trane downstairs, which has a different reverse engagement configuration than most other A/Cs, so flipping the wires got me heat downstairs too.. That was fun.