hvac - Can I use this unused blue wire as my C wire for my new Nest thermostat? - Home Improvement Stack Exchange
HVAC-Talk: Heating, Air & Refrigeration Discussion
What is the blue wire? Is it a C wire? : r/hvacadvice
Where does the blue wire on a thermostat go? - Quora
hvac - Thermostat wiring orange and blue wires - Home Improvement Stack Exchange
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Blue "C" wire is connected to "Y" on old thermostat. New thermostat has separate "C" hookup. Where does the blue wire go - "Y" or "C"? : r/Nest
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Thermostat C wire connection on Trane - DoItYourself.com Community Forums
The blue wire goes to the Y on thermostat. Instead of going to Y on HVAC it is connected to white wire that goes to AC? Why and do I connect both (
Is blue always the C Wire? : r/hvacadvice
HVAC-Talk: Heating, Air & Refrigeration Discussion
![Nest Thermostat Wire Colors [Explained] - YouTube](https://i.ytimg.com/vi/6uIobT86FdU/mqdefault.jpg "Nest Thermostat Wire Colors [Explained] - YouTube")
Nest Thermostat Wire Colors [Explained] - YouTube
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Thermostat Wire Color Codes You Need to Know | AireServ
Where does the blue wire on a thermostat go? - Quora
