Google has stopped supporting its first‑ and second‑generation Nest Learning Thermostats, a move that sparked some anger in October 2025. While most people regularly replace phones and computers, thermostats tend to stay put for years, and they are not especially demanding on software. It is therefore puzzling why Google could not devise a way to keep the older models functional beyond 14 years.
The devices are not entirely dead. Users can still adjust temperatures and settings directly on the unit, and the auto‑schedule feature still works. However, without Google’s backing, the thermostats no longer connect to external apps or accessories and will not receive any more software updates. Google has offered discounted upgrades to the fourth‑generation Learning Thermostat, but that may not appeal to anyone who does not want to stay locked into Google’s ecosystem.
There are two practical paths forward: recycle the unit or try a third‑party solution that restores its smart capabilities. Which route you choose will depend on how comfortable you are with technology.
The most prominent effort to revive older Nest thermostats is a free, open‑source project called No Longer Evil. By flashing custom firmware onto the device, users can regain many of the advanced features that were lost when Google cut off cloud access. The project includes its own cloud platform, but users can also run a personal server or integrate the thermostat with Home Assistant. An automated installer is available, yet the process carries a non‑zero risk of bricking the thermostat. If that happens, the unit becomes unusable even in its basic mode, which could be problematic during extreme weather if a replacement is not immediately available.
If you prefer a safer route, take advantage of Google’s free recycling program. The company provides a prepaid shipping label, eliminating the need to drive to a drop‑off point. Those without a printer will need to locate a local retailer or e‑waste center that accepts the device. Before sending it off, perform a factory reset by navigating to Settings → Reset → All Settings to erase any personal data.
Replacing the thermostat may be worthwhile if your goal is to lower energy costs. Newer models from Google and other manufacturers improve efficiency by detecting occupancy and syncing with cloud‑based weather data. Remote temperature adjustments can also prevent waste when the house is empty. However, if your household follows a predictable schedule, the built‑in scheduling on the older Nest may be sufficient. Comfort levels generally stay consistent throughout the year, and modest temperature adjustments—letting the house run a few degrees hotter in summer and cooler in winter—can save money without sacrificing comfort. Simple measures such as changing clothing or using portable fans and heaters are often cheaper than forcing an HVAC system to work harder.
Should you decide to purchase a new thermostat, check with your utility provider for rebate programs. Many energy companies offer significant incentives that can make a high‑end model affordable; in some cases, an entry‑level thermostat may effectively be free after rebates.