Can the C wire be blue?

Blue or Black – C – Common wire, may be unused by your existing thermostat. Enables continuous power flow from the Red wire. Red – R – 24VAC power from the furnace’s transformer.

Where does the blue wire go on Google Nest?





If your thermostat doesn’t have a separate connector labeled C and you’re not sure what type of system you have:

  1. A brown wire is mostly likely a heat pump wire and should be connected to the O/B connector on the Nest thermostat.
  2. If the B wire is blue, it should most likely be connected to the C connector.


What color wire goes to the C on Nest?

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.

Does Google Nest use C wire?





With a Nest Thermostat E or Nest Learning Thermostat, you’ll need to install a C wire if the thermostat has power issues or its battery often drains.

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.

Can the C wire be brown?

The C, or common wire, provides smart thermostats with continual power. It’s usually blue, but it may also be black, brown or purple. The O or orange wire connects to your heat pump (if applicable).

Where does blue wire go on thermostat?

Blue wires are for heat pumps. This wire connects to terminal B on your thermostat.

Where does C wire go on Nest thermostat?



Quote from the video:
Quote from Youtube video: So here in my old wiring you can see that i have the y1. Gw1 rh and the c-space is missing that c wire. So here i definitely could use the c wire now that we have determined we need to add the c wire.

Can I use Nest without C wire?

You can install a Nest Thermostat without a C-wire by using a C-wire adapter, that mimics a traditional C-Wire without you having to wire it. If you are not a handyman, it saves a lot of money that you would otherwise have to spend on a professional installer too.

How do I bypass the C wire on my Nest thermostat?

Quote from the video:
Quote from Youtube video: For the common wire. So what you would do is go to your nest thermostat. Take off the G wire. Usually. It's going to be the green wire going to G. So you press on it you pull it out and before.

How do I bypass the C wire on my thermostat?



Quote from the video:
Quote from Youtube video: Add a jumper wire between the Y and G. Terminals. If there's already wires attached just leave them be go ahead and push all the wires in. And close the backplate.

Does Nest need RC and RH?

The Nest Thermostat E only has an R connector, which is typically where an R wire would go. If you have separate heating and air conditioning systems, you might have separate Rh and Rc wires that come out of the wall and are connected to your system.

Is RC the same as C wire?

The C and Rc wires are not the same. To install this thermostat you should follow the exact same wiring of the previous thermostat.

What do the colors of the thermostat wires mean?

The wires are typically arranged as follows: red for 24-volt hot, white for heat, yellow for cooling, green for the fan, and blue for common (although the common wire may be a different color). You can also refer to the Conductor Color Chart (see Chart 6, thermostat wire).

Where does C wire go on air handler?



Quote from the video:
Quote from Youtube video: The common terminal is going to be right here so if you're installing. Something you would stick the wire. Into this screw terminal from the bottom.

Where does the C wire get power from?

WHAT IS A C-WIRE? A C-wire, or a common wire, runs from your low voltage heating system (24v) and carries continuous power to your thermostat. In today’s electric market, most newer heating and cooling systems have C-wires, which guarantees compatibility for the installation of all smart thermostats.