Thermostat Wire Color Code: Complete Detailed Guide
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The Thermostat Wire Color Code You Need to Know
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Where does the blue wire on a thermostat go? - Quora
How to Wire a Thermostat - The Home Depot
Thermostat Wire Color Code: Complete Detailed Guide
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Installed Nest Thermostat. Have a blue wire I did not connect to anything but the system works. What's the risk? : r/hvacadvice
How to identify a thermostat wire
