How do I install a Wi-Fi thermostat without C wire?

Quote from the video:
Quote from Youtube video: Turn your power to the thermostat off at the circuit breaker. Once you've installed the backplate of your new thermostat onto the wall unwrap the wire if it's wrapped around your wire bundle.

Can you use green wire for C wire?





Quote from the video:
Quote from Youtube video: This green wire that was on our G's and Gulf is now going to become our C wire. And now we can take in put it in our C terminal. So we no longer have a G's and Gulf that was our fan control.

How do I install a Honeywell C wire adapter?

Quote from the video:
Quote from Youtube video: With this thermostat. So what we're going to do now is called the c wire adapter. So what we're going to do is we're going to relabel our g here to a c.

How do you identify C wire?

Quote from the video:
Quote from Youtube video: Likely there is gonna be a fifth wire tucked into the wall I'm thinking that's going to be our C wire most likely because as you can see we have a green a yellow a white in a red.

What color is the C wire?

Blue wires





Blue wires are also called “C” wires because they are the Common wire. C wires are necessary for any “smart” thermostat that needs to be connected to a power source 24/7, regardless of your heat pump type.

What does C wire stand for?

common

The c wire is an extra wire that can be used to provide a return path for continuous 24V power for any application. It’s normally used to provide a return path to power the thermostat. The “c” stands for common. It is often labeled as “c” on thermostat backplates.