Add Yahoo as a preferred source to see more of our stories on Google. Hand holds a phone with the Nest app next to a Nest thermostat on a screen indicating HVAC running time - oasisamuel/Shutterstock ...

In early July, when temperatures were rising to the 90s, my smart thermostat, a Nest Gen-4 model, shut down completely in the worst timing possible. None of the quick fixes I had used when testing ...

Unlike previous generations, the Nest Learning Thermostat (4th Gen) that launched last month debuted without any manual control for display brightness. As such, the default dim settings of the display ...