Google discontinued support for Nest's first- and second-generation Learning Thermostats in October 2025, sparking frustration among users. These devices remain functional for on-device temperature adjustments and auto-schedule functions but are disconnected from external apps and no longer receive software updates. Google offers discounted upgrades to the fourth-generation model, though this is less appealing to those not invested in its ecosystem.
For users seeking to revive older hardware, the open-source project No Longer Evil allows flashing custom firmware to restore advanced functions, though it carries a risk of bricking the device. Alternatively, users can utilize Google's free recycling program, which provides a prepaid shipping label, or switch to third-party brands. Those considering a new purchase should evaluate energy-saving features like occupancy detection and weather syncing.
Simple habits, such as adjusting temperatures seasonally and using portable fans or heaters, can often be more cost-effective than forcing an HVAC system to work harder. Energy providers may offer rebates for new smart thermostat installations.
Source: Engadget · Summarized by HeadlinesBriefing