Category Thermostats

A thermostat wiring diagram walkthrough covering every terminal letter, common setups, and what to check before you connect a single wire.

Thermostat wiring explained in plain terms. What each colored wire does, what the R, C, W, Y and G terminals mean, and why color alone can mislead you.

How to install a thermostat yourself without an electrician. The safe step-by-step for low-voltage systems, plus the one wire that trips most people up.