Google Nest Community

That is useful information. It is too bad that there is no way to know that until you have already purchased a unit, and it does not seem possible based on the labeling on the hardware. I already bought a non-smart thermostat that is working well for...

Yes, I saw the post about the Nest not being able to handle two-stage heating. I will be getting a non-smart thermostat to be able to do that. Thanks.

We do not have air conditioning but have a two-stage furnace. There are only four wires going to the thermostat: Red (main power), Green (fan), W1 (heating stage 1), and W2 (heating stage 2). There is no fifth wire available for an independent C (com...

Where does the W2 wire go?

I have the same question. Does the Nest Thermostat support 2-stage heating furnaces?