We may receive a commission on purchases made from links. Switching to a smart thermostat can seem like a no-brainer. Fine-tuned climate controls are always a plus to make your home more comfortable, ...

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 ...

A thermostat upgrade can make cooling more convenient, but it can also reveal problems if the new control does not communicate properly with the air conditioning system. Homeowners may notice short ...