Honeywell Thermostat Wiring Color Code

With so many new functions appearing on today’s modern thermostats (t-stats), there is of course, many more wires to connect up nowadays, when installing a new or replacement t-stat.  Gone are the two-wire days, when all you needed was one wire from the furnace transformer, and the other to feed power to a gas valve … Continue reading Honeywell Thermostat Wiring Color Code