I have since removed the Honeywell RLV3120A 2-wire thermostat and put back in the old mechanical twist-knob thermostat. Since this one has three wires I connected the black and red to the same two ...

Good news if you’re in the market for your first smart thermostat: You don’t have to break the bank for a feature-rich model.

If the prospect of installing your own thermostat feels overwhelming, don't despair. This step-by-step guide will show you how to set up Honeywell's $280 Lyric smart thermostat in a flash. Take a ...