The best smart thermostats we've tested can control your home's heating and cooling with your phone or voice—and might help you save on energy costs. I’ve been working with computers for ages ...

The Amazon thermostat requires a C-wire for power, but if your system doesn't have one, you can order a Honeywell C-wire adapter ($24.99). The thermostat comes with a mounting plate, wire ...

Always make note of your wiring before you remove your old thermostat, and if possible, take a picture. Most of the latest devices come with pre-printed labels that you can attach to the wires to ...

The best thermostats keep your home heated to perfection during winter and nice and cool during the summer. "My standard thermostat already does that so why would you buy a smart one?", you might ...