If you dont see a wire you can identify as the C-wire, though, dont despair yet – you may need to look behind your existing thermostat. If your current thermostat didnt need a C-wire, it (or a wire that can be used as a C-wire) might be rolled up inside the wall.
How do you hook up a thermostat without C wire?
0:042:52What if I Dont Have a C-Wire? - YouTubeYouTubeStart of suggested clipEnd of suggested clipTerminal. If theres already a wire attached to the C terminal. Just leave it be and attach a newMoreTerminal. If theres already a wire attached to the C terminal. Just leave it be and attach a new wire next to it go ahead and push all the wires back into the wall.
What can I use instead of C wire?
If there is no hidden C-wire, you can use a G-wire instead. However, you will not be able to use your fan independently when the heating or cooling isnt running. Also, many HVAC systems are incompatible with this solution, including: HVAC systems using electric heat.
Do any smart thermostats work without C wire?
Simple and straightforward Nest Thermostat E smart thermostat. Our top pick for the best smart thermostat without a C wire goes to the Nest Thermostat E.
What color is the C-wire on a thermostat?
blue wire The blue wire on the thermostat is the Common or “C” wire.
Is RC the same as C-wire?
Typically, the wires that give the power supply (usually termed as the hot wires) are marked Rc (for cooling) and Rh (for heating). They give a 24-volt power supply from the HVAC systems control panel. If your system has a common wire, it will be marked C at most times.
How many volts is the C wire?
24-volt The c in c-wire stands for common. The purpose of the thermostat c-wire is to provide continuous 24-volt AC power, known as 24VAC, to the thermostat. And the purpose of having continuous power is to get a constant, accurate thermostat reading.
How do you check a C wire on a thermostat?
It is easy to see if you already have a c-wire connected to your system. Simply remove your current thermostat face from its baseplate and look for the terminal labeled with the letter “c.” If this terminal has a wire attached to it, you have an active “c-wire.”
How do you test if C-wire has power?
It is easy to see if you already have a c-wire connected to your system. Simply remove your current thermostat face from its baseplate and look for the terminal labeled with the letter “c.” If this terminal has a wire attached to it, you have an active “c-wire.”
What color is the C-wire?
blue wire The blue wire on the thermostat is the Common or “C” wire.