4th-gen Nest Learning Thermostat review: Pricey but stunning

At this point, smart thermostats are pretty common. A lot of people own them and, more often than not, they have a model from Nest, Ecobee, or Amazon. As far as smart home devices go, smart thermostats are among the most useful, allowing users to change the temperature of their home from their phone, whether at home or on the go.