The most “meaty” part of following the wiring instructions for a new Honeywell thermostat, is correctly connecting it to the HVAC system. One useful feature about these t-stats, is that they generally use the same wire labeling as their older models. Today’s WiFi t-stats still use the R, Rx, C, W, Y1, Y2, et al … Continue reading Honeywell Thermostat Wiring Instructions
Tag: Honeywell Thermostat Wiring
Honeywell Thermostat 4 Wire Wiring Diagram
Today’s thermostats have so many new functions. So there are many more wires to connect up when installing a new or replacement t-stat. Gone are the two-wire days. In those times, all you needed was one wire from the furnace transformer. Plus, you had another to feed power to a gas valve or relay to … Continue reading Honeywell Thermostat 4 Wire Wiring Diagram