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





How to Wire a Honeywell Thermostat with 4 Wires

If you’ve installed more than a few thermostats, you’re likely to have come across many that utilize four wires, as shown below in the units we’ve hooked up.  Typical 4 wire thermostat (t-stat) wiring examples follow.  Some have the common (C) wire, while others do not.  Both examples of how to wire a Honeywell thermostat with 4 wires … Continue reading How to Wire a Honeywell Thermostat with 4 Wires