The Nest Learning Thermostat (4th gen) is Google’s smartest, most advanced thermostat yet. It’s a brilliant way to save energy and keep your home comfortable. It learns the temperatures you like, when you like them, even as your routine changes.¹ It gets to know how outdoor temps naturally heat and cool your home to save energy.¹ And it helps make sure your heating and cooling systems run smoothly.² | Google | | Nest Learning Thermostat (4th gen) with Nest Temperature Sensor (2nd gen | Polished Obsidian | Best Buy