4 Wire Thermostat Wiring Color Code

If you’ve installed more than a few thermostats (t-stats), you likely noticed that many of them use four wires.  See this shown below in the units we’ve wired.  Typical 4 wire thermostat wiring color code examples follow. 4 Wire Thermostat Wiring Color Code In the setups we’ve seen, the most common wire color code guide … Continue reading 4 Wire Thermostat Wiring Color Code